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refactor(lee::state_machine): clean up long functions and files (#535)

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* refactor(lee): split large modules into directories and extract tests

Split state.rs, program.rs, circuit.rs, validated_state_diff.rs,
merkle_tree, and core/program.rs into module directories with separate
test files. State tests are further split into themed files (genesis,
authenticated_transfer, circuit, claiming, etc.). Extract
authenticate_public_transaction_signers helper in validated_state_diff
to remove duplicated authentication logic.

* chore: rebuild artifacts
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jonesmarvin8 2026-07-01 11:11:08 -04:00 committed by GitHub
parent f786aca73e
commit 072ea3b066
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GPG Key ID: B5690EEEBB952194
35 changed files with 7084 additions and 7179 deletions
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lee/state_machine/core/src/program.rs → lee/state_machine/core/src/program/mod.rs
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@ -230,7 +230,7 @@ impl ChainedCall {
/// Represents the final state of an `Account` after a program execution.
///
/// A post state may optionally request that the executing program
/// becomes the owner of the account (a “claim”). This is used to signal
/// becomes the owner of the account (a "claim"). This is used to signal
/// that the program intends to take ownership of the account.
#[derive(Debug, Clone, Serialize, Deserialize)]
#[cfg_attr(any(feature = "host", test), derive(PartialEq, Eq))]
@ -766,338 +766,4 @@ fn validate_uniqueness_of_account_ids(pre_states: &[AccountWithMetadata]) -> boo
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn validity_window_unbounded_accepts_any_value() {
let w: ValidityWindow<u64> = ValidityWindow::new_unbounded();
assert!(w.is_valid_for(0));
assert!(w.is_valid_for(u64::MAX));
}
#[test]
fn validity_window_bounded_range_includes_from_excludes_to() {
let w: ValidityWindow<u64> = (Some(5), Some(10)).try_into().unwrap();
assert!(!w.is_valid_for(4));
assert!(w.is_valid_for(5));
assert!(w.is_valid_for(9));
assert!(!w.is_valid_for(10));
}
#[test]
fn validity_window_only_from_bound() {
let w: ValidityWindow<u64> = (Some(5), None).try_into().unwrap();
assert!(!w.is_valid_for(4));
assert!(w.is_valid_for(5));
assert!(w.is_valid_for(u64::MAX));
}
#[test]
fn validity_window_only_to_bound() {
let w: ValidityWindow<u64> = (None, Some(5)).try_into().unwrap();
assert!(w.is_valid_for(0));
assert!(w.is_valid_for(4));
assert!(!w.is_valid_for(5));
}
#[test]
fn validity_window_adjacent_bounds_are_invalid() {
// [5, 5) is an empty range — from == to
assert!(ValidityWindow::<u64>::try_from((Some(5), Some(5))).is_err());
}
#[test]
fn validity_window_inverted_bounds_are_invalid() {
assert!(ValidityWindow::<u64>::try_from((Some(10), Some(5))).is_err());
}
#[test]
fn validity_window_getters_match_construction() {
let w: ValidityWindow<u64> = (Some(3), Some(7)).try_into().unwrap();
assert_eq!(w.start(), Some(3));
assert_eq!(w.end(), Some(7));
}
#[test]
fn validity_window_getters_for_unbounded() {
let w: ValidityWindow<u64> = ValidityWindow::new_unbounded();
assert_eq!(w.start(), None);
assert_eq!(w.end(), None);
}
#[test]
fn validity_window_from_range() {
let w: ValidityWindow<u64> = ValidityWindow::try_from(5_u64..10).unwrap();
assert_eq!(w.start(), Some(5));
assert_eq!(w.end(), Some(10));
}
#[test]
fn validity_window_from_range_empty_is_invalid() {
assert!(ValidityWindow::<u64>::try_from(5_u64..5).is_err());
}
#[test]
fn validity_window_from_range_inverted_is_invalid() {
let from = 10_u64;
let to = 5_u64;
assert!(ValidityWindow::<u64>::try_from(from..to).is_err());
}
#[test]
fn validity_window_from_range_from() {
let w: ValidityWindow<u64> = (5_u64..).into();
assert_eq!(w.start(), Some(5));
assert_eq!(w.end(), None);
}
#[test]
fn validity_window_from_range_to() {
let w: ValidityWindow<u64> = (..10_u64).into();
assert_eq!(w.start(), None);
assert_eq!(w.end(), Some(10));
}
#[test]
fn validity_window_from_range_full() {
let w: ValidityWindow<u64> = (..).into();
assert_eq!(w.start(), None);
assert_eq!(w.end(), None);
}
#[test]
fn program_output_try_with_block_validity_window_range() {
let output = ProgramOutput::new(DEFAULT_PROGRAM_ID, None, vec![], vec![], vec![])
.try_with_block_validity_window(10_u64..100)
.unwrap();
assert_eq!(output.block_validity_window.start(), Some(10));
assert_eq!(output.block_validity_window.end(), Some(100));
}
#[test]
fn program_output_with_block_validity_window_range_from() {
let output = ProgramOutput::new(DEFAULT_PROGRAM_ID, None, vec![], vec![], vec![])
.with_block_validity_window(10_u64..);
assert_eq!(output.block_validity_window.start(), Some(10));
assert_eq!(output.block_validity_window.end(), None);
}
#[test]
fn program_output_with_block_validity_window_range_to() {
let output = ProgramOutput::new(DEFAULT_PROGRAM_ID, None, vec![], vec![], vec![])
.with_block_validity_window(..100_u64);
assert_eq!(output.block_validity_window.start(), None);
assert_eq!(output.block_validity_window.end(), Some(100));
}
#[test]
fn program_output_try_with_block_validity_window_empty_range_fails() {
let result = ProgramOutput::new(DEFAULT_PROGRAM_ID, None, vec![], vec![], vec![])
.try_with_block_validity_window(5_u64..5);
assert!(result.is_err());
}
#[test]
fn post_state_new_with_claim_constructor() {
let account = Account {
program_owner: [1, 2, 3, 4, 5, 6, 7, 8],
balance: 1337,
data: vec![0xde, 0xad, 0xbe, 0xef].try_into().unwrap(),
nonce: 10_u128.into(),
};
let account_post_state = AccountPostState::new_claimed(account.clone(), Claim::Authorized);
assert_eq!(account, account_post_state.account);
assert_eq!(account_post_state.required_claim(), Some(Claim::Authorized));
}
#[test]
fn post_state_new_without_claim_constructor() {
let account = Account {
program_owner: [1, 2, 3, 4, 5, 6, 7, 8],
balance: 1337,
data: vec![0xde, 0xad, 0xbe, 0xef].try_into().unwrap(),
nonce: 10_u128.into(),
};
let account_post_state = AccountPostState::new(account.clone());
assert_eq!(account, account_post_state.account);
assert!(account_post_state.required_claim().is_none());
}
#[test]
fn post_state_account_getter() {
let mut account = Account {
program_owner: [1, 2, 3, 4, 5, 6, 7, 8],
balance: 1337,
data: vec![0xde, 0xad, 0xbe, 0xef].try_into().unwrap(),
nonce: 10_u128.into(),
};
let mut account_post_state = AccountPostState::new(account.clone());
assert_eq!(account_post_state.account(), &account);
assert_eq!(account_post_state.account_mut(), &mut account);
}
// ---- AccountId::for_private_pda tests ----
/// Pins `AccountId::for_private_pda` against a hardcoded expected output for a specific
/// `(program_id, seed, npk, identifier)` tuple. Any change to `PRIVATE_PDA_PREFIX`, byte
/// ordering, or the underlying hash breaks this test.
#[test]
fn for_private_pda_matches_pinned_value() {
let program_id: ProgramId = [1; 8];
let seed = PdaSeed::new([2; 32]);
let npk = NullifierPublicKey([3; 32]);
let identifier: Identifier = u128::MAX;
let expected = AccountId::new([
59, 239, 182, 97, 14, 220, 96, 115, 238, 133, 143, 33, 234, 82, 237, 255, 148, 110, 54,
124, 98, 159, 245, 101, 146, 182, 150, 54, 37, 62, 25, 17,
]);
assert_eq!(
AccountId::for_private_pda(&program_id, &seed, &npk, identifier),
expected
);
}
/// Two groups with different viewing keys at the same (program, seed) get different addresses.
#[test]
fn for_private_pda_differs_for_different_npk() {
let program_id: ProgramId = [1; 8];
let seed = PdaSeed::new([2; 32]);
let npk_a = NullifierPublicKey([3; 32]);
let npk_b = NullifierPublicKey([4; 32]);
assert_ne!(
AccountId::for_private_pda(&program_id, &seed, &npk_a, u128::MAX),
AccountId::for_private_pda(&program_id, &seed, &npk_b, u128::MAX),
);
}
/// Different seeds produce different addresses, even with the same program and npk.
#[test]
fn for_private_pda_differs_for_different_seed() {
let program_id: ProgramId = [1; 8];
let seed_a = PdaSeed::new([2; 32]);
let seed_b = PdaSeed::new([5; 32]);
let npk = NullifierPublicKey([3; 32]);
assert_ne!(
AccountId::for_private_pda(&program_id, &seed_a, &npk, u128::MAX),
AccountId::for_private_pda(&program_id, &seed_b, &npk, u128::MAX),
);
}
/// Different programs produce different addresses, even with the same seed and npk.
#[test]
fn for_private_pda_differs_for_different_program_id() {
let program_id_a: ProgramId = [1; 8];
let program_id_b: ProgramId = [9; 8];
let seed = PdaSeed::new([2; 32]);
let npk = NullifierPublicKey([3; 32]);
assert_ne!(
AccountId::for_private_pda(&program_id_a, &seed, &npk, u128::MAX),
AccountId::for_private_pda(&program_id_b, &seed, &npk, u128::MAX),
);
}
/// Different identifiers produce different addresses for the same `(program_id, seed, npk)`,
/// confirming that each `(program_id, seed, npk)` tuple controls a family of 2^128 addresses.
#[test]
fn for_private_pda_differs_for_different_identifier() {
let program_id: ProgramId = [1; 8];
let seed = PdaSeed::new([2; 32]);
let npk = NullifierPublicKey([3; 32]);
assert_ne!(
AccountId::for_private_pda(&program_id, &seed, &npk, 0),
AccountId::for_private_pda(&program_id, &seed, &npk, 1),
);
assert_ne!(
AccountId::for_private_pda(&program_id, &seed, &npk, 0),
AccountId::for_private_pda(&program_id, &seed, &npk, u128::MAX),
);
}
/// A private PDA at the same (program, seed) has a different address than a public PDA,
/// because the private formula uses a different prefix and includes npk.
#[test]
fn for_private_pda_differs_from_public_pda() {
let program_id: ProgramId = [1; 8];
let seed = PdaSeed::new([2; 32]);
let npk = NullifierPublicKey([3; 32]);
let private_id = AccountId::for_private_pda(&program_id, &seed, &npk, u128::MAX);
let public_id = AccountId::for_public_pda(&program_id, &seed);
assert_ne!(private_id, public_id);
}
#[cfg(feature = "host")]
#[test]
fn private_account_kind_header_round_trips() {
let regular = PrivateAccountKind::Regular(42);
let pda = PrivateAccountKind::Pda {
program_id: [1_u32; 8],
seed: PdaSeed::new([2_u8; 32]),
identifier: u128::MAX,
};
assert_eq!(
PrivateAccountKind::from_header_bytes(&regular.to_header_bytes()),
Some(regular)
);
assert_eq!(
PrivateAccountKind::from_header_bytes(&pda.to_header_bytes()),
Some(pda)
);
}
#[cfg(feature = "host")]
#[test]
fn private_account_kind_unknown_discriminant_returns_none() {
let mut bytes = [0_u8; PrivateAccountKind::HEADER_LEN];
bytes[0] = 0xFF;
assert_eq!(PrivateAccountKind::from_header_bytes(&bytes), None);
}
#[test]
fn for_private_account_dispatches_correctly() {
let program_id: ProgramId = [1; 8];
let seed = PdaSeed::new([2; 32]);
let npk = NullifierPublicKey([3; 32]);
let identifier: Identifier = 77;
assert_eq!(
AccountId::for_private_account(&npk, &PrivateAccountKind::Regular(identifier)),
AccountId::for_regular_private_account(&npk, identifier),
);
assert_eq!(
AccountId::for_private_account(
&npk,
&PrivateAccountKind::Pda {
program_id,
seed,
identifier
}
),
AccountId::for_private_pda(&program_id, &seed, &npk, identifier),
);
}
#[test]
fn compute_public_authorized_pdas_with_seeds() {
let caller: ProgramId = [1; 8];
let seed = PdaSeed::new([2; 32]);
let result = compute_public_authorized_pdas(Some(caller), &[seed]);
let expected = AccountId::for_public_pda(&caller, &seed);
assert!(result.contains(&expected));
assert_eq!(result.len(), 1);
}
/// With no caller (top-level call), the result is always empty.
#[test]
fn compute_public_authorized_pdas_no_caller_returns_empty() {
let seed = PdaSeed::new([2; 32]);
let result = compute_public_authorized_pdas(None, &[seed]);
assert!(result.is_empty());
}
}
mod tests;

333
lee/state_machine/core/src/program/tests.rs Normal file
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@ -0,0 +1,333 @@
use super::*;
#[test]
fn validity_window_unbounded_accepts_any_value() {
let w: ValidityWindow<u64> = ValidityWindow::new_unbounded();
assert!(w.is_valid_for(0));
assert!(w.is_valid_for(u64::MAX));
}
#[test]
fn validity_window_bounded_range_includes_from_excludes_to() {
let w: ValidityWindow<u64> = (Some(5), Some(10)).try_into().unwrap();
assert!(!w.is_valid_for(4));
assert!(w.is_valid_for(5));
assert!(w.is_valid_for(9));
assert!(!w.is_valid_for(10));
}
#[test]
fn validity_window_only_from_bound() {
let w: ValidityWindow<u64> = (Some(5), None).try_into().unwrap();
assert!(!w.is_valid_for(4));
assert!(w.is_valid_for(5));
assert!(w.is_valid_for(u64::MAX));
}
#[test]
fn validity_window_only_to_bound() {
let w: ValidityWindow<u64> = (None, Some(5)).try_into().unwrap();
assert!(w.is_valid_for(0));
assert!(w.is_valid_for(4));
assert!(!w.is_valid_for(5));
}
#[test]
fn validity_window_adjacent_bounds_are_invalid() {
// [5, 5) is an empty range — from == to
assert!(ValidityWindow::<u64>::try_from((Some(5), Some(5))).is_err());
}
#[test]
fn validity_window_inverted_bounds_are_invalid() {
assert!(ValidityWindow::<u64>::try_from((Some(10), Some(5))).is_err());
}
#[test]
fn validity_window_getters_match_construction() {
let w: ValidityWindow<u64> = (Some(3), Some(7)).try_into().unwrap();
assert_eq!(w.start(), Some(3));
assert_eq!(w.end(), Some(7));
}
#[test]
fn validity_window_getters_for_unbounded() {
let w: ValidityWindow<u64> = ValidityWindow::new_unbounded();
assert_eq!(w.start(), None);
assert_eq!(w.end(), None);
}
#[test]
fn validity_window_from_range() {
let w: ValidityWindow<u64> = ValidityWindow::try_from(5_u64..10).unwrap();
assert_eq!(w.start(), Some(5));
assert_eq!(w.end(), Some(10));
}
#[test]
fn validity_window_from_range_empty_is_invalid() {
assert!(ValidityWindow::<u64>::try_from(5_u64..5).is_err());
}
#[test]
fn validity_window_from_range_inverted_is_invalid() {
let from = 10_u64;
let to = 5_u64;
assert!(ValidityWindow::<u64>::try_from(from..to).is_err());
}
#[test]
fn validity_window_from_range_from() {
let w: ValidityWindow<u64> = (5_u64..).into();
assert_eq!(w.start(), Some(5));
assert_eq!(w.end(), None);
}
#[test]
fn validity_window_from_range_to() {
let w: ValidityWindow<u64> = (..10_u64).into();
assert_eq!(w.start(), None);
assert_eq!(w.end(), Some(10));
}
#[test]
fn validity_window_from_range_full() {
let w: ValidityWindow<u64> = (..).into();
assert_eq!(w.start(), None);
assert_eq!(w.end(), None);
}
#[test]
fn program_output_try_with_block_validity_window_range() {
let output = ProgramOutput::new(DEFAULT_PROGRAM_ID, None, vec![], vec![], vec![])
.try_with_block_validity_window(10_u64..100)
.unwrap();
assert_eq!(output.block_validity_window.start(), Some(10));
assert_eq!(output.block_validity_window.end(), Some(100));
}
#[test]
fn program_output_with_block_validity_window_range_from() {
let output = ProgramOutput::new(DEFAULT_PROGRAM_ID, None, vec![], vec![], vec![])
.with_block_validity_window(10_u64..);
assert_eq!(output.block_validity_window.start(), Some(10));
assert_eq!(output.block_validity_window.end(), None);
}
#[test]
fn program_output_with_block_validity_window_range_to() {
let output = ProgramOutput::new(DEFAULT_PROGRAM_ID, None, vec![], vec![], vec![])
.with_block_validity_window(..100_u64);
assert_eq!(output.block_validity_window.start(), None);
assert_eq!(output.block_validity_window.end(), Some(100));
}
#[test]
fn program_output_try_with_block_validity_window_empty_range_fails() {
let result = ProgramOutput::new(DEFAULT_PROGRAM_ID, None, vec![], vec![], vec![])
.try_with_block_validity_window(5_u64..5);
assert!(result.is_err());
}
#[test]
fn post_state_new_with_claim_constructor() {
let account = Account {
program_owner: [1, 2, 3, 4, 5, 6, 7, 8],
balance: 1337,
data: vec![0xde, 0xad, 0xbe, 0xef].try_into().unwrap(),
nonce: 10_u128.into(),
};
let account_post_state = AccountPostState::new_claimed(account.clone(), Claim::Authorized);
assert_eq!(account, account_post_state.account);
assert_eq!(account_post_state.required_claim(), Some(Claim::Authorized));
}
#[test]
fn post_state_new_without_claim_constructor() {
let account = Account {
program_owner: [1, 2, 3, 4, 5, 6, 7, 8],
balance: 1337,
data: vec![0xde, 0xad, 0xbe, 0xef].try_into().unwrap(),
nonce: 10_u128.into(),
};
let account_post_state = AccountPostState::new(account.clone());
assert_eq!(account, account_post_state.account);
assert!(account_post_state.required_claim().is_none());
}
#[test]
fn post_state_account_getter() {
let mut account = Account {
program_owner: [1, 2, 3, 4, 5, 6, 7, 8],
balance: 1337,
data: vec![0xde, 0xad, 0xbe, 0xef].try_into().unwrap(),
nonce: 10_u128.into(),
};
let mut account_post_state = AccountPostState::new(account.clone());
assert_eq!(account_post_state.account(), &account);
assert_eq!(account_post_state.account_mut(), &mut account);
}
// ---- AccountId::for_private_pda tests ----
/// Pins `AccountId::for_private_pda` against a hardcoded expected output for a specific
/// `(program_id, seed, npk, identifier)` tuple. Any change to `PRIVATE_PDA_PREFIX`, byte
/// ordering, or the underlying hash breaks this test.
#[test]
fn for_private_pda_matches_pinned_value() {
let program_id: ProgramId = [1; 8];
let seed = PdaSeed::new([2; 32]);
let npk = NullifierPublicKey([3; 32]);
let identifier: Identifier = u128::MAX;
let expected = AccountId::new([
59, 239, 182, 97, 14, 220, 96, 115, 238, 133, 143, 33, 234, 82, 237, 255, 148, 110, 54,
124, 98, 159, 245, 101, 146, 182, 150, 54, 37, 62, 25, 17,
]);
assert_eq!(
AccountId::for_private_pda(&program_id, &seed, &npk, identifier),
expected
);
}
/// Two groups with different viewing keys at the same (program, seed) get different addresses.
#[test]
fn for_private_pda_differs_for_different_npk() {
let program_id: ProgramId = [1; 8];
let seed = PdaSeed::new([2; 32]);
let npk_a = NullifierPublicKey([3; 32]);
let npk_b = NullifierPublicKey([4; 32]);
assert_ne!(
AccountId::for_private_pda(&program_id, &seed, &npk_a, u128::MAX),
AccountId::for_private_pda(&program_id, &seed, &npk_b, u128::MAX),
);
}
/// Different seeds produce different addresses, even with the same program and npk.
#[test]
fn for_private_pda_differs_for_different_seed() {
let program_id: ProgramId = [1; 8];
let seed_a = PdaSeed::new([2; 32]);
let seed_b = PdaSeed::new([5; 32]);
let npk = NullifierPublicKey([3; 32]);
assert_ne!(
AccountId::for_private_pda(&program_id, &seed_a, &npk, u128::MAX),
AccountId::for_private_pda(&program_id, &seed_b, &npk, u128::MAX),
);
}
/// Different programs produce different addresses, even with the same seed and npk.
#[test]
fn for_private_pda_differs_for_different_program_id() {
let program_id_a: ProgramId = [1; 8];
let program_id_b: ProgramId = [9; 8];
let seed = PdaSeed::new([2; 32]);
let npk = NullifierPublicKey([3; 32]);
assert_ne!(
AccountId::for_private_pda(&program_id_a, &seed, &npk, u128::MAX),
AccountId::for_private_pda(&program_id_b, &seed, &npk, u128::MAX),
);
}
/// Different identifiers produce different addresses for the same `(program_id, seed, npk)`,
/// confirming that each `(program_id, seed, npk)` tuple controls a family of 2^128 addresses.
#[test]
fn for_private_pda_differs_for_different_identifier() {
let program_id: ProgramId = [1; 8];
let seed = PdaSeed::new([2; 32]);
let npk = NullifierPublicKey([3; 32]);
assert_ne!(
AccountId::for_private_pda(&program_id, &seed, &npk, 0),
AccountId::for_private_pda(&program_id, &seed, &npk, 1),
);
assert_ne!(
AccountId::for_private_pda(&program_id, &seed, &npk, 0),
AccountId::for_private_pda(&program_id, &seed, &npk, u128::MAX),
);
}
/// A private PDA at the same (program, seed) has a different address than a public PDA,
/// because the private formula uses a different prefix and includes npk.
#[test]
fn for_private_pda_differs_from_public_pda() {
let program_id: ProgramId = [1; 8];
let seed = PdaSeed::new([2; 32]);
let npk = NullifierPublicKey([3; 32]);
let private_id = AccountId::for_private_pda(&program_id, &seed, &npk, u128::MAX);
let public_id = AccountId::for_public_pda(&program_id, &seed);
assert_ne!(private_id, public_id);
}
#[cfg(feature = "host")]
#[test]
fn private_account_kind_header_round_trips() {
let regular = PrivateAccountKind::Regular(42);
let pda = PrivateAccountKind::Pda {
program_id: [1_u32; 8],
seed: PdaSeed::new([2_u8; 32]),
identifier: u128::MAX,
};
assert_eq!(
PrivateAccountKind::from_header_bytes(&regular.to_header_bytes()),
Some(regular)
);
assert_eq!(
PrivateAccountKind::from_header_bytes(&pda.to_header_bytes()),
Some(pda)
);
}
#[cfg(feature = "host")]
#[test]
fn private_account_kind_unknown_discriminant_returns_none() {
let mut bytes = [0_u8; PrivateAccountKind::HEADER_LEN];
bytes[0] = 0xFF;
assert_eq!(PrivateAccountKind::from_header_bytes(&bytes), None);
}
#[test]
fn for_private_account_dispatches_correctly() {
let program_id: ProgramId = [1; 8];
let seed = PdaSeed::new([2; 32]);
let npk = NullifierPublicKey([3; 32]);
let identifier: Identifier = 77;
assert_eq!(
AccountId::for_private_account(&npk, &PrivateAccountKind::Regular(identifier)),
AccountId::for_regular_private_account(&npk, identifier),
);
assert_eq!(
AccountId::for_private_account(
&npk,
&PrivateAccountKind::Pda {
program_id,
seed,
identifier
}
),
AccountId::for_private_pda(&program_id, &seed, &npk, identifier),
);
}
#[test]
fn compute_public_authorized_pdas_with_seeds() {
let caller: ProgramId = [1; 8];
let seed = PdaSeed::new([2; 32]);
let result = compute_public_authorized_pdas(Some(caller), &[seed]);
let expected = AccountId::for_public_pda(&caller, &seed);
assert!(result.contains(&expected));
assert_eq!(result.len(), 1);
}
/// With no caller (top-level call), the result is always empty.
#[test]
fn compute_public_authorized_pdas_no_caller_returns_empty() {
let seed = PdaSeed::new([2; 32]);
let result = compute_public_authorized_pdas(None, &[seed]);
assert!(result.is_empty());
}

396
lee/state_machine/src/merkle_tree/mod.rs
View File

@ -164,398 +164,4 @@ const fn prev_power_of_two(x: usize) -> usize {
}
#[cfg(test)]
mod tests {
use hex_literal::hex;
use super::*;
impl MerkleTree {
pub fn new(values: &[Value]) -> Self {
let mut this = Self::with_capacity(values.len());
for value in values.iter().copied() {
this.insert(value);
}
this
}
}
#[test]
fn empty_merkle_tree() {
let tree = MerkleTree::with_capacity(4);
let expected_root =
hex!("0000000000000000000000000000000000000000000000000000000000000000");
assert_eq!(tree.root(), expected_root);
assert_eq!(tree.capacity, 4);
assert_eq!(tree.length, 0);
}
#[test]
fn merkle_tree_0() {
let values = [[0; 32]];
let tree = MerkleTree::new(&values);
assert_eq!(tree.root(), hash_value(&[0; 32]));
assert_eq!(tree.capacity, 1);
assert_eq!(tree.length, 1);
}
#[test]
fn merkle_tree_1() {
let values = [[1; 32], [2; 32], [3; 32], [4; 32]];
let tree = MerkleTree::new(&values);
let expected_root =
hex!("48c73f7821a58a8d2a703e5b39c571c0aa20cf14abcd0af8f2b955bc202998de");
assert_eq!(tree.root(), expected_root);
assert_eq!(tree.capacity, 4);
assert_eq!(tree.length, 4);
}
#[test]
fn merkle_tree_2() {
let values = [[1; 32], [2; 32], [3; 32], [0; 32]];
let tree = MerkleTree::new(&values);
let expected_root =
hex!("c9bbb83096df85157a146e7d770455a98412dee0633187ee86fee6c8a45b831a");
assert_eq!(tree.root(), expected_root);
assert_eq!(tree.capacity, 4);
assert_eq!(tree.length, 4);
}
#[test]
fn merkle_tree_3() {
let values = [[1; 32], [2; 32], [3; 32]];
let tree = MerkleTree::new(&values);
let expected_root =
hex!("c8d3d8d2b13f27ceeccdc699119871f9f32ea7ed86ff45d0ad11f77b28cd7568");
assert_eq!(tree.root(), expected_root);
assert_eq!(tree.capacity, 4);
assert_eq!(tree.length, 3);
}
#[test]
fn merkle_tree_4() {
let values = [[11; 32], [12; 32], [13; 32], [14; 32], [15; 32]];
let tree = MerkleTree::new(&values);
let expected_root =
hex!("ef418aed5aa20702d4d94c92da79a4012f2e36f1008bfdb3cd1e38749dca2499");
assert_eq!(tree.root(), expected_root);
assert_eq!(tree.capacity, 8);
assert_eq!(tree.length, 5);
}
#[test]
fn merkle_tree_5() {
let values = [
[11; 32], [12; 32], [12; 32], [13; 32], [14; 32], [15; 32], [15; 32], [13; 32],
[13; 32], [15; 32], [11; 32],
];
let tree = MerkleTree::new(&values);
let expected_root =
hex!("3f72d2ff55921a86c48e5988ec3e19ee9d0d5aa3e23197842970a903508ed767");
assert_eq!(tree.root(), expected_root);
assert_eq!(tree.capacity, 16);
assert_eq!(tree.length, 11);
}
#[test]
fn merkle_tree_6() {
let values = [[1; 32], [2; 32], [3; 32], [4; 32], [5; 32]];
let tree = MerkleTree::new(&values);
let expected_root =
hex!("069cb8259a06fe6edb3fa7ff7933a6dd7dca6fca299314379794a688926c3792");
assert_eq!(tree.root(), expected_root);
}
#[test]
fn with_capacity_4() {
let tree = MerkleTree::with_capacity(4);
assert_eq!(tree.length, 0);
assert_eq!(tree.nodes.len(), 7);
for i in 3..7 {
assert_eq!(*tree.get_node(i), default_values::DEFAULT_VALUES[0], "{i}");
}
for i in 1..3 {
assert_eq!(*tree.get_node(i), default_values::DEFAULT_VALUES[1], "{i}");
}
assert_eq!(*tree.get_node(0), default_values::DEFAULT_VALUES[2]);
}
#[test]
fn with_capacity_5() {
let tree = MerkleTree::with_capacity(5);
assert_eq!(tree.length, 0);
assert_eq!(tree.nodes.len(), 15);
for i in 7..15 {
assert_eq!(*tree.get_node(i), default_values::DEFAULT_VALUES[0]);
}
for i in 3..7 {
assert_eq!(*tree.get_node(i), default_values::DEFAULT_VALUES[1]);
}
for i in 1..3 {
assert_eq!(*tree.get_node(i), default_values::DEFAULT_VALUES[2]);
}
assert_eq!(*tree.get_node(0), default_values::DEFAULT_VALUES[3]);
}
#[test]
fn with_capacity_6() {
let mut tree = MerkleTree::with_capacity(100);
let values = [[1; 32], [2; 32], [3; 32], [4; 32]];
let expected_root =
hex!("48c73f7821a58a8d2a703e5b39c571c0aa20cf14abcd0af8f2b955bc202998de");
assert_eq!(0, tree.insert(values[0]));
assert_eq!(1, tree.insert(values[1]));
assert_eq!(2, tree.insert(values[2]));
assert_eq!(3, tree.insert(values[3]));
assert_eq!(tree.root(), expected_root);
}
#[test]
fn with_capacity_7() {
let mut tree = MerkleTree::with_capacity(599);
let values = [[1; 32], [2; 32], [3; 32]];
let expected_root =
hex!("c8d3d8d2b13f27ceeccdc699119871f9f32ea7ed86ff45d0ad11f77b28cd7568");
assert_eq!(0, tree.insert(values[0]));
assert_eq!(1, tree.insert(values[1]));
assert_eq!(2, tree.insert(values[2]));
assert_eq!(tree.root(), expected_root);
}
#[test]
fn with_capacity_8() {
let mut tree = MerkleTree::with_capacity(1);
let values = [[1; 32], [2; 32], [3; 32]];
let expected_root =
hex!("c8d3d8d2b13f27ceeccdc699119871f9f32ea7ed86ff45d0ad11f77b28cd7568");
assert_eq!(0, tree.insert(values[0]));
assert_eq!(1, tree.insert(values[1]));
assert_eq!(2, tree.insert(values[2]));
assert_eq!(tree.root(), expected_root);
}
#[test]
fn insert_value_1() {
let mut tree = MerkleTree::with_capacity(1);
let values = [[1; 32], [2; 32], [3; 32]];
let expected_tree = MerkleTree::new(&values);
assert_eq!(0, tree.insert(values[0]));
assert_eq!(1, tree.insert(values[1]));
assert_eq!(2, tree.insert(values[2]));
assert_eq!(expected_tree, tree);
}
#[test]
fn insert_value_2() {
let mut tree = MerkleTree::with_capacity(1);
let values = [[1; 32], [2; 32], [3; 32], [4; 32]];
let expected_tree = MerkleTree::new(&values);
assert_eq!(0, tree.insert(values[0]));
assert_eq!(1, tree.insert(values[1]));
assert_eq!(2, tree.insert(values[2]));
assert_eq!(3, tree.insert(values[3]));
assert_eq!(expected_tree, tree);
}
#[test]
fn insert_value_3() {
let mut tree = MerkleTree::with_capacity(1);
let values = [[11; 32], [12; 32], [13; 32], [14; 32], [15; 32]];
let expected_tree = MerkleTree::new(&values);
tree.insert(values[0]);
tree.insert(values[1]);
tree.insert(values[2]);
tree.insert(values[3]);
tree.insert(values[4]);
assert_eq!(expected_tree, tree);
}
// Reference implementation
fn verify_authentication_path(value: &Value, index: usize, path: &[Node], root: &Node) -> bool {
let mut result = hash_value(value);
let mut level_index = index;
for node in path {
let is_left_child = level_index & 1 == 0;
if is_left_child {
result = hash_two(&result, node);
} else {
result = hash_two(node, &result);
}
level_index >>= 1;
}
&result == root
}
#[test]
fn authentication_path_1() {
let values = [[1; 32], [2; 32], [3; 32], [4; 32]];
let tree = MerkleTree::new(&values);
let expected_authentication_path = vec![
hex!("9f4fb68f3e1dac82202f9aa581ce0bbf1f765df0e9ac3c8c57e20f685abab8ed"),
hex!("50a27d4746f357cb700cbe9d4883b77fb64f0128828a3489dc6a6f21ddbf2414"),
];
let authentication_path = tree.get_authentication_path_for(2).unwrap();
assert_eq!(authentication_path, expected_authentication_path);
}
#[test]
fn authentication_path_2() {
let values = [[1; 32], [2; 32], [3; 32]];
let tree = MerkleTree::new(&values);
let expected_authentication_path = vec![
hex!("75877bb41d393b5fb8455ce60ecd8dda001d06316496b14dfa7f895656eeca4a"),
hex!("a41b855d2db4de9052cd7be5ec67d6586629cb9f6e3246a4afa5ba313f07a9c5"),
];
let authentication_path = tree.get_authentication_path_for(0).unwrap();
assert_eq!(authentication_path, expected_authentication_path);
}
#[test]
fn authentication_path_3() {
let values = [[1; 32], [2; 32], [3; 32], [4; 32], [5; 32]];
let tree = MerkleTree::new(&values);
let expected_authentication_path = vec![
hex!("0000000000000000000000000000000000000000000000000000000000000000"),
hex!("f5a5fd42d16a20302798ef6ed309979b43003d2320d9f0e8ea9831a92759fb4b"),
hex!("48c73f7821a58a8d2a703e5b39c571c0aa20cf14abcd0af8f2b955bc202998de"),
];
let authentication_path = tree.get_authentication_path_for(4).unwrap();
assert_eq!(authentication_path, expected_authentication_path);
}
#[test]
fn authentication_path_4() {
let values = [[1; 32], [2; 32], [3; 32], [4; 32], [5; 32]];
let tree = MerkleTree::new(&values);
assert!(tree.get_authentication_path_for(5).is_none());
}
#[test]
fn authentication_path_5() {
let values = [[1; 32], [2; 32], [3; 32], [4; 32], [5; 32]];
let tree = MerkleTree::new(&values);
let index = 4;
let value = values[index];
let path = tree.get_authentication_path_for(index).unwrap();
assert!(verify_authentication_path(
&value,
index,
&path,
&tree.root()
));
}
#[test]
fn tree_with_63_insertions() {
let values = [
hex!("cd00acab0f45736e6c6311f1953becc0b69a062e7c2a7310875d28bdf9ef9c5b"),
hex!("0df5a6afbcc7bf126caf7084acfc593593ab512e6ca433c61c1a922be40a04ea"),
hex!("23c1258620266c7bedb6d1ee32f6da9413e4010ace975239dccb34e727e07c40"),
hex!("f33ccc3a11476b0ef62326ca5ec292056759b05e6a28023d2d1ce66165611353"),
hex!("77f914ab016b8049f6bea7704000e413a393865918a3824f9285c3db0aacff23"),
hex!("910a1c23188e54d57fd167ddb0f8bf68c6b70ed9ec76ef56c4b7f2632f82ca7f"),
hex!("047ee85526197d1e7403a559cf6d2f22c1926c8ad59481a2e2f1b697af45e40b"),
hex!("9d355cf89fb382ae34bf80566b28489278d10f2cebb5b0ea42fab1bac5adae0c"),
hex!("604018b95232596b2685a9bc737b6cccb53b10e483d2d9a2f4a755410b02a188"),
hex!("a16708ef7b6bf1796063addaf57d6a566b6f87b0bbe42af43a4590d05f1684cb"),
hex!("820f2dfa271cd2fd41e1452406d5dad552c85c1223c45d45dbd7446759fdc6b8"),
hex!("680b6912d7e219f8805d4d28adb4428dd78fea0dc1b8cdb2412645c4b1962c88"),
hex!("14d5471ce6c45506753982b17cac5790ac7bc29e6f388f31052d7dfd62b294e5"),
hex!("8b364200172b777d4aa16d2098b5eb98ac3dd4a1b9597e5c2bf6f6930031f230"),
hex!("9bb45b910711874339dda8a21a9aad73822286f5e52d7d3de0ed78dfbba329a5"),
hex!("d6806d5df5cb25ce5d531042f09b3cb34fb9e47c61182b63cccd9d44392f6027"),
hex!("b8cfa90ebc8fd09c04682d93a08fddd3e8e57715174dcc92451edd191264a58b"),
hex!("3463c7f81d00f809b3dfa83195447c927fb4045b3913dac6f45bee6c4010d7ed"),
hex!("1d6ad7f7d677905feb506c58f4b404a79370ebc567296abea3a368b61d5a8239"),
hex!("a58085ecf00963cb22da23c901b9b3ddc56462bb96ff03c923d67708e10dd29c"),
hex!("c3319f4a65fb5bbb8447137b0972c03cbd84ebf7d9da194e0fcbd68c2d4d5bdb"),
hex!("4aa31e90e0090faf3648d05e5d5499df2c78ebed4d6e6c23d8147de5d67dae73"),
hex!("9f33b1d2c8bc7bd265336de1033ede6344bc41260313bdcb43f1108b83b9be92"),
hex!("6500d4ad93d41c16ec81eaa5e70f173194aabe5c1072ac263b5727296f5b7cac"),
hex!("3584f5d260003669fad98786e13171376b0f19410cb232ce65606cbff79e6768"),
hex!("c8410946ebf56f13141c894a34ced85a5230088af70dcea581e44f52847830ac"),
hex!("71dd90281cdebb70422f2d04ae446d5d2d5ea64b803c16128d37e3fcd5d1a4cc"),
hex!("c05acf8d77ab4d659a538bd35af590864a7ad9c055ff5d6cda9d5aecfccecba3"),
hex!("f1df98822ea084cce9021aa9cc81b1746cd1e84a75690da63e10fd877633ed77"),
hex!("2ca822bc8f67bceb0a71a0d06fea7349036ef3e5ec21795a851e4182bd35ce01"),
hex!("7fd2179abc3bcf89b4d8092988ba8c23952b3bbd3d7caea6b5ea0c13cf19f68b"),
hex!("91b6ad516e017f6aa5a2e95776538bd3a3e933c1b1d32bb5e0f00a9db63c9c24"),
hex!("cd31a8b5eef5ca0be5ef1cb261d0bf0a74d774a3152bb99739cfd296a1d0b85e"),
hex!("3fb16f48b2bf93f3815979e6638f975d7f935088ec37db0be0f07965fbc78339"),
hex!("c60c61b99bf486af5f4bf780a69860dafcd35c1474306a8575666fb5449bcec0"),
hex!("8048d0d7e14091251f3f6c6b10bf6b5880a014b513f9f8c2395501dbffa6192a"),
hex!("778b5af10b9dbe80b60a8e4f0bb91caf4476bcb812801099760754ae623fbd84"),
hex!("d3ac25467920a4e08998b7a3226b8b54bfe66ac58cfedc71f15b2402fee0054a"),
hex!("029aa94598fae2961a0d43937b8a9a3138bcfeae99a7cb15f77fac7c506f8432"),
hex!("2eee5ef52fe669cb6882a68c893abdc1262dcf4424e4ba7a479da7cf1c10171d"),
hex!("de3fb3d070e3a90f0eed8b5e65088a8dc0e4e3c342b9c0bf33bab714eae5dfec"),
hex!("14d40177e833ab45bbfdc5f2b11fba7efaebb3f69facc554f24b549a2efe8538"),
hex!("5734355069702448774fb2df95f1d562e1b9fe1514aeb6b922554ee9d2d01068"),
hex!("8a273d49ac110343cec2cf3359d16eb2906b446bd9ec9833e2a640cebc8d5155"),
hex!("e3fa984dd3cbeb9a7e827ed32d3d4e6a6ba643a55d82be97d9ddb06ee809fa3e"),
hex!("90b1d5a364e17c8b7965396b06ec6e13749b5fc16500731518ad8fc30ae33e77"),
hex!("7517376541b2e8ec83cbab04522b54a26610908a9872feb663451385aea58eb1"),
hex!("5cba2e4cf7448e526d161133c4b2ea7c919ac4813a7308612595f46f11dea6cd"),
hex!("c721911b300bec0691c8a2dfaabfef1d66b7b6258918914d3c3ad690729f05b7"),
hex!("d0d0a70d8ae0d27806fa0b711c507290c260a89cbca0436d339d1dccdd087d62"),
hex!("2a625c28ea763c5e82dd0a93ecfca7ec371ccbb363cd42be359c2c875f58009d"),
hex!("174ef0119932ed890397d9f3837dd85f9100558b6fc9085d4af947ae8cf74bbc"),
hex!("b497bc267151e8efa3c6daa461e6804b01a3f05f44f1f4d5b41d5f0d3f5219b1"),
hex!("e987e91f5734630ddd7e6b58733b4fcdbc316ee9e8cac0e94c36c91cf58e59cc"),
hex!("55019ad8bbe656c51eb042190c1c8da53f42baf43fd2350ebea38fc7cca2fae3"),
hex!("c45a638edd18a6d9f5ad20b870c81b8626459bcb22dae7d58add7a6b6c6a84a8"),
hex!("d42d3a5fb2ad50b2027fe5a36d59dd71e49a63e4b1b299073c96bbf7ba5d68a1"),
hex!("9599e561054bcd3f647eb018ab0b069d3176497d42be9c4466551cbb959be47c"),
hex!("42f33b23775327ff71aea6569548255f3cc9929da73373cc9bb1743d417f7cda"),
hex!("ab24294f44fc6fdbeb96e0f6e93c4f6d97d035b73b9a337c353e18c6d0603bdd"),
hex!("33954ec63520334f99b640a2982ac966b68c363fed383d621a1ab573934f1d33"),
hex!("5e2a1f7df963d1fd8f50a285387cfbb5df581426619b325563e20bf7886c62b7"),
hex!("13ffde471d4e27c473254e766fd1328ad80c42cab4d4955cffeae43d866f86e5"),
];
let expected_root =
hex!("1cf9b214217d7823f9de51b8f6cb34d0a99436a3a1bb762f90b815672a6afcc0");
let mut tree_less_capacity = MerkleTree::with_capacity(1);
let mut tree_exact_capacity = MerkleTree::with_capacity(64);
let mut tree_more_capacity = MerkleTree::with_capacity(128);
for value in &values {
tree_less_capacity.insert(*value);
tree_exact_capacity.insert(*value);
tree_more_capacity.insert(*value);
}
assert_eq!(tree_more_capacity.root(), expected_root);
assert_eq!(tree_less_capacity.root(), expected_root);
assert_eq!(tree_exact_capacity.root(), expected_root);
}
}
//
mod tests;

380
lee/state_machine/src/merkle_tree/tests.rs Normal file
View File

@ -0,0 +1,380 @@
use hex_literal::hex;
use super::*;
impl MerkleTree {
pub fn new(values: &[Value]) -> Self {
let mut this = Self::with_capacity(values.len());
for value in values.iter().copied() {
this.insert(value);
}
this
}
}
#[test]
fn empty_merkle_tree() {
let tree = MerkleTree::with_capacity(4);
let expected_root = hex!("0000000000000000000000000000000000000000000000000000000000000000");
assert_eq!(tree.root(), expected_root);
assert_eq!(tree.capacity, 4);
assert_eq!(tree.length, 0);
}
#[test]
fn merkle_tree_0() {
let values = [[0; 32]];
let tree = MerkleTree::new(&values);
assert_eq!(tree.root(), hash_value(&[0; 32]));
assert_eq!(tree.capacity, 1);
assert_eq!(tree.length, 1);
}
#[test]
fn merkle_tree_1() {
let values = [[1; 32], [2; 32], [3; 32], [4; 32]];
let tree = MerkleTree::new(&values);
let expected_root = hex!("48c73f7821a58a8d2a703e5b39c571c0aa20cf14abcd0af8f2b955bc202998de");
assert_eq!(tree.root(), expected_root);
assert_eq!(tree.capacity, 4);
assert_eq!(tree.length, 4);
}
#[test]
fn merkle_tree_2() {
let values = [[1; 32], [2; 32], [3; 32], [0; 32]];
let tree = MerkleTree::new(&values);
let expected_root = hex!("c9bbb83096df85157a146e7d770455a98412dee0633187ee86fee6c8a45b831a");
assert_eq!(tree.root(), expected_root);
assert_eq!(tree.capacity, 4);
assert_eq!(tree.length, 4);
}
#[test]
fn merkle_tree_3() {
let values = [[1; 32], [2; 32], [3; 32]];
let tree = MerkleTree::new(&values);
let expected_root = hex!("c8d3d8d2b13f27ceeccdc699119871f9f32ea7ed86ff45d0ad11f77b28cd7568");
assert_eq!(tree.root(), expected_root);
assert_eq!(tree.capacity, 4);
assert_eq!(tree.length, 3);
}
#[test]
fn merkle_tree_4() {
let values = [[11; 32], [12; 32], [13; 32], [14; 32], [15; 32]];
let tree = MerkleTree::new(&values);
let expected_root = hex!("ef418aed5aa20702d4d94c92da79a4012f2e36f1008bfdb3cd1e38749dca2499");
assert_eq!(tree.root(), expected_root);
assert_eq!(tree.capacity, 8);
assert_eq!(tree.length, 5);
}
#[test]
fn merkle_tree_5() {
let values = [
[11; 32], [12; 32], [12; 32], [13; 32], [14; 32], [15; 32], [15; 32], [13; 32], [13; 32],
[15; 32], [11; 32],
];
let tree = MerkleTree::new(&values);
let expected_root = hex!("3f72d2ff55921a86c48e5988ec3e19ee9d0d5aa3e23197842970a903508ed767");
assert_eq!(tree.root(), expected_root);
assert_eq!(tree.capacity, 16);
assert_eq!(tree.length, 11);
}
#[test]
fn merkle_tree_6() {
let values = [[1; 32], [2; 32], [3; 32], [4; 32], [5; 32]];
let tree = MerkleTree::new(&values);
let expected_root = hex!("069cb8259a06fe6edb3fa7ff7933a6dd7dca6fca299314379794a688926c3792");
assert_eq!(tree.root(), expected_root);
}
#[test]
fn with_capacity_4() {
let tree = MerkleTree::with_capacity(4);
assert_eq!(tree.length, 0);
assert_eq!(tree.nodes.len(), 7);
for i in 3..7 {
assert_eq!(*tree.get_node(i), default_values::DEFAULT_VALUES[0], "{i}");
}
for i in 1..3 {
assert_eq!(*tree.get_node(i), default_values::DEFAULT_VALUES[1], "{i}");
}
assert_eq!(*tree.get_node(0), default_values::DEFAULT_VALUES[2]);
}
#[test]
fn with_capacity_5() {
let tree = MerkleTree::with_capacity(5);
assert_eq!(tree.length, 0);
assert_eq!(tree.nodes.len(), 15);
for i in 7..15 {
assert_eq!(*tree.get_node(i), default_values::DEFAULT_VALUES[0]);
}
for i in 3..7 {
assert_eq!(*tree.get_node(i), default_values::DEFAULT_VALUES[1]);
}
for i in 1..3 {
assert_eq!(*tree.get_node(i), default_values::DEFAULT_VALUES[2]);
}
assert_eq!(*tree.get_node(0), default_values::DEFAULT_VALUES[3]);
}
#[test]
fn with_capacity_6() {
let mut tree = MerkleTree::with_capacity(100);
let values = [[1; 32], [2; 32], [3; 32], [4; 32]];
let expected_root = hex!("48c73f7821a58a8d2a703e5b39c571c0aa20cf14abcd0af8f2b955bc202998de");
assert_eq!(0, tree.insert(values[0]));
assert_eq!(1, tree.insert(values[1]));
assert_eq!(2, tree.insert(values[2]));
assert_eq!(3, tree.insert(values[3]));
assert_eq!(tree.root(), expected_root);
}
#[test]
fn with_capacity_7() {
let mut tree = MerkleTree::with_capacity(599);
let values = [[1; 32], [2; 32], [3; 32]];
let expected_root = hex!("c8d3d8d2b13f27ceeccdc699119871f9f32ea7ed86ff45d0ad11f77b28cd7568");
assert_eq!(0, tree.insert(values[0]));
assert_eq!(1, tree.insert(values[1]));
assert_eq!(2, tree.insert(values[2]));
assert_eq!(tree.root(), expected_root);
}
#[test]
fn with_capacity_8() {
let mut tree = MerkleTree::with_capacity(1);
let values = [[1; 32], [2; 32], [3; 32]];
let expected_root = hex!("c8d3d8d2b13f27ceeccdc699119871f9f32ea7ed86ff45d0ad11f77b28cd7568");
assert_eq!(0, tree.insert(values[0]));
assert_eq!(1, tree.insert(values[1]));
assert_eq!(2, tree.insert(values[2]));
assert_eq!(tree.root(), expected_root);
}
#[test]
fn insert_value_1() {
let mut tree = MerkleTree::with_capacity(1);
let values = [[1; 32], [2; 32], [3; 32]];
let expected_tree = MerkleTree::new(&values);
assert_eq!(0, tree.insert(values[0]));
assert_eq!(1, tree.insert(values[1]));
assert_eq!(2, tree.insert(values[2]));
assert_eq!(expected_tree, tree);
}
#[test]
fn insert_value_2() {
let mut tree = MerkleTree::with_capacity(1);
let values = [[1; 32], [2; 32], [3; 32], [4; 32]];
let expected_tree = MerkleTree::new(&values);
assert_eq!(0, tree.insert(values[0]));
assert_eq!(1, tree.insert(values[1]));
assert_eq!(2, tree.insert(values[2]));
assert_eq!(3, tree.insert(values[3]));
assert_eq!(expected_tree, tree);
}
#[test]
fn insert_value_3() {
let mut tree = MerkleTree::with_capacity(1);
let values = [[11; 32], [12; 32], [13; 32], [14; 32], [15; 32]];
let expected_tree = MerkleTree::new(&values);
tree.insert(values[0]);
tree.insert(values[1]);
tree.insert(values[2]);
tree.insert(values[3]);
tree.insert(values[4]);
assert_eq!(expected_tree, tree);
}
// Reference implementation
fn verify_authentication_path(value: &Value, index: usize, path: &[Node], root: &Node) -> bool {
let mut result = hash_value(value);
let mut level_index = index;
for node in path {
let is_left_child = level_index & 1 == 0;
if is_left_child {
result = hash_two(&result, node);
} else {
result = hash_two(node, &result);
}
level_index >>= 1;
}
&result == root
}
#[test]
fn authentication_path_1() {
let values = [[1; 32], [2; 32], [3; 32], [4; 32]];
let tree = MerkleTree::new(&values);
let expected_authentication_path = vec![
hex!("9f4fb68f3e1dac82202f9aa581ce0bbf1f765df0e9ac3c8c57e20f685abab8ed"),
hex!("50a27d4746f357cb700cbe9d4883b77fb64f0128828a3489dc6a6f21ddbf2414"),
];
let authentication_path = tree.get_authentication_path_for(2).unwrap();
assert_eq!(authentication_path, expected_authentication_path);
}
#[test]
fn authentication_path_2() {
let values = [[1; 32], [2; 32], [3; 32]];
let tree = MerkleTree::new(&values);
let expected_authentication_path = vec![
hex!("75877bb41d393b5fb8455ce60ecd8dda001d06316496b14dfa7f895656eeca4a"),
hex!("a41b855d2db4de9052cd7be5ec67d6586629cb9f6e3246a4afa5ba313f07a9c5"),
];
let authentication_path = tree.get_authentication_path_for(0).unwrap();
assert_eq!(authentication_path, expected_authentication_path);
}
#[test]
fn authentication_path_3() {
let values = [[1; 32], [2; 32], [3; 32], [4; 32], [5; 32]];
let tree = MerkleTree::new(&values);
let expected_authentication_path = vec![
hex!("0000000000000000000000000000000000000000000000000000000000000000"),
hex!("f5a5fd42d16a20302798ef6ed309979b43003d2320d9f0e8ea9831a92759fb4b"),
hex!("48c73f7821a58a8d2a703e5b39c571c0aa20cf14abcd0af8f2b955bc202998de"),
];
let authentication_path = tree.get_authentication_path_for(4).unwrap();
assert_eq!(authentication_path, expected_authentication_path);
}
#[test]
fn authentication_path_4() {
let values = [[1; 32], [2; 32], [3; 32], [4; 32], [5; 32]];
let tree = MerkleTree::new(&values);
assert!(tree.get_authentication_path_for(5).is_none());
}
#[test]
fn authentication_path_5() {
let values = [[1; 32], [2; 32], [3; 32], [4; 32], [5; 32]];
let tree = MerkleTree::new(&values);
let index = 4;
let value = values[index];
let path = tree.get_authentication_path_for(index).unwrap();
assert!(verify_authentication_path(
&value,
index,
&path,
&tree.root()
));
}
#[test]
fn tree_with_63_insertions() {
let values = [
hex!("cd00acab0f45736e6c6311f1953becc0b69a062e7c2a7310875d28bdf9ef9c5b"),
hex!("0df5a6afbcc7bf126caf7084acfc593593ab512e6ca433c61c1a922be40a04ea"),
hex!("23c1258620266c7bedb6d1ee32f6da9413e4010ace975239dccb34e727e07c40"),
hex!("f33ccc3a11476b0ef62326ca5ec292056759b05e6a28023d2d1ce66165611353"),
hex!("77f914ab016b8049f6bea7704000e413a393865918a3824f9285c3db0aacff23"),
hex!("910a1c23188e54d57fd167ddb0f8bf68c6b70ed9ec76ef56c4b7f2632f82ca7f"),
hex!("047ee85526197d1e7403a559cf6d2f22c1926c8ad59481a2e2f1b697af45e40b"),
hex!("9d355cf89fb382ae34bf80566b28489278d10f2cebb5b0ea42fab1bac5adae0c"),
hex!("604018b95232596b2685a9bc737b6cccb53b10e483d2d9a2f4a755410b02a188"),
hex!("a16708ef7b6bf1796063addaf57d6a566b6f87b0bbe42af43a4590d05f1684cb"),
hex!("820f2dfa271cd2fd41e1452406d5dad552c85c1223c45d45dbd7446759fdc6b8"),
hex!("680b6912d7e219f8805d4d28adb4428dd78fea0dc1b8cdb2412645c4b1962c88"),
hex!("14d5471ce6c45506753982b17cac5790ac7bc29e6f388f31052d7dfd62b294e5"),
hex!("8b364200172b777d4aa16d2098b5eb98ac3dd4a1b9597e5c2bf6f6930031f230"),
hex!("9bb45b910711874339dda8a21a9aad73822286f5e52d7d3de0ed78dfbba329a5"),
hex!("d6806d5df5cb25ce5d531042f09b3cb34fb9e47c61182b63cccd9d44392f6027"),
hex!("b8cfa90ebc8fd09c04682d93a08fddd3e8e57715174dcc92451edd191264a58b"),
hex!("3463c7f81d00f809b3dfa83195447c927fb4045b3913dac6f45bee6c4010d7ed"),
hex!("1d6ad7f7d677905feb506c58f4b404a79370ebc567296abea3a368b61d5a8239"),
hex!("a58085ecf00963cb22da23c901b9b3ddc56462bb96ff03c923d67708e10dd29c"),
hex!("c3319f4a65fb5bbb8447137b0972c03cbd84ebf7d9da194e0fcbd68c2d4d5bdb"),
hex!("4aa31e90e0090faf3648d05e5d5499df2c78ebed4d6e6c23d8147de5d67dae73"),
hex!("9f33b1d2c8bc7bd265336de1033ede6344bc41260313bdcb43f1108b83b9be92"),
hex!("6500d4ad93d41c16ec81eaa5e70f173194aabe5c1072ac263b5727296f5b7cac"),
hex!("3584f5d260003669fad98786e13171376b0f19410cb232ce65606cbff79e6768"),
hex!("c8410946ebf56f13141c894a34ced85a5230088af70dcea581e44f52847830ac"),
hex!("71dd90281cdebb70422f2d04ae446d5d2d5ea64b803c16128d37e3fcd5d1a4cc"),
hex!("c05acf8d77ab4d659a538bd35af590864a7ad9c055ff5d6cda9d5aecfccecba3"),
hex!("f1df98822ea084cce9021aa9cc81b1746cd1e84a75690da63e10fd877633ed77"),
hex!("2ca822bc8f67bceb0a71a0d06fea7349036ef3e5ec21795a851e4182bd35ce01"),
hex!("7fd2179abc3bcf89b4d8092988ba8c23952b3bbd3d7caea6b5ea0c13cf19f68b"),
hex!("91b6ad516e017f6aa5a2e95776538bd3a3e933c1b1d32bb5e0f00a9db63c9c24"),
hex!("cd31a8b5eef5ca0be5ef1cb261d0bf0a74d774a3152bb99739cfd296a1d0b85e"),
hex!("3fb16f48b2bf93f3815979e6638f975d7f935088ec37db0be0f07965fbc78339"),
hex!("c60c61b99bf486af5f4bf780a69860dafcd35c1474306a8575666fb5449bcec0"),
hex!("8048d0d7e14091251f3f6c6b10bf6b5880a014b513f9f8c2395501dbffa6192a"),
hex!("778b5af10b9dbe80b60a8e4f0bb91caf4476bcb812801099760754ae623fbd84"),
hex!("d3ac25467920a4e08998b7a3226b8b54bfe66ac58cfedc71f15b2402fee0054a"),
hex!("029aa94598fae2961a0d43937b8a9a3138bcfeae99a7cb15f77fac7c506f8432"),
hex!("2eee5ef52fe669cb6882a68c893abdc1262dcf4424e4ba7a479da7cf1c10171d"),
hex!("de3fb3d070e3a90f0eed8b5e65088a8dc0e4e3c342b9c0bf33bab714eae5dfec"),
hex!("14d40177e833ab45bbfdc5f2b11fba7efaebb3f69facc554f24b549a2efe8538"),
hex!("5734355069702448774fb2df95f1d562e1b9fe1514aeb6b922554ee9d2d01068"),
hex!("8a273d49ac110343cec2cf3359d16eb2906b446bd9ec9833e2a640cebc8d5155"),
hex!("e3fa984dd3cbeb9a7e827ed32d3d4e6a6ba643a55d82be97d9ddb06ee809fa3e"),
hex!("90b1d5a364e17c8b7965396b06ec6e13749b5fc16500731518ad8fc30ae33e77"),
hex!("7517376541b2e8ec83cbab04522b54a26610908a9872feb663451385aea58eb1"),
hex!("5cba2e4cf7448e526d161133c4b2ea7c919ac4813a7308612595f46f11dea6cd"),
hex!("c721911b300bec0691c8a2dfaabfef1d66b7b6258918914d3c3ad690729f05b7"),
hex!("d0d0a70d8ae0d27806fa0b711c507290c260a89cbca0436d339d1dccdd087d62"),
hex!("2a625c28ea763c5e82dd0a93ecfca7ec371ccbb363cd42be359c2c875f58009d"),
hex!("174ef0119932ed890397d9f3837dd85f9100558b6fc9085d4af947ae8cf74bbc"),
hex!("b497bc267151e8efa3c6daa461e6804b01a3f05f44f1f4d5b41d5f0d3f5219b1"),
hex!("e987e91f5734630ddd7e6b58733b4fcdbc316ee9e8cac0e94c36c91cf58e59cc"),
hex!("55019ad8bbe656c51eb042190c1c8da53f42baf43fd2350ebea38fc7cca2fae3"),
hex!("c45a638edd18a6d9f5ad20b870c81b8626459bcb22dae7d58add7a6b6c6a84a8"),
hex!("d42d3a5fb2ad50b2027fe5a36d59dd71e49a63e4b1b299073c96bbf7ba5d68a1"),
hex!("9599e561054bcd3f647eb018ab0b069d3176497d42be9c4466551cbb959be47c"),
hex!("42f33b23775327ff71aea6569548255f3cc9929da73373cc9bb1743d417f7cda"),
hex!("ab24294f44fc6fdbeb96e0f6e93c4f6d97d035b73b9a337c353e18c6d0603bdd"),
hex!("33954ec63520334f99b640a2982ac966b68c363fed383d621a1ab573934f1d33"),
hex!("5e2a1f7df963d1fd8f50a285387cfbb5df581426619b325563e20bf7886c62b7"),
hex!("13ffde471d4e27c473254e766fd1328ad80c42cab4d4955cffeae43d866f86e5"),
];
let expected_root = hex!("1cf9b214217d7823f9de51b8f6cb34d0a99436a3a1bb762f90b815672a6afcc0");
let mut tree_less_capacity = MerkleTree::with_capacity(1);
let mut tree_exact_capacity = MerkleTree::with_capacity(64);
let mut tree_more_capacity = MerkleTree::with_capacity(128);
for value in &values {
tree_less_capacity.insert(*value);
tree_exact_capacity.insert(*value);
tree_more_capacity.insert(*value);
}
assert_eq!(tree_more_capacity.root(), expected_root);
assert_eq!(tree_less_capacity.root(), expected_root);
assert_eq!(tree_exact_capacity.root(), expected_root);
}

916
lee/state_machine/src/privacy_preserving_transaction/circuit.rs
View File

@ -1,916 +0,0 @@
use std::collections::{HashMap, VecDeque};
use borsh::{BorshDeserialize, BorshSerialize};
use lee_core::{
InputAccountIdentity, PrivacyPreservingCircuitInput, PrivacyPreservingCircuitOutput,
account::AccountWithMetadata,
program::{ChainedCall, InstructionData, ProgramId, ProgramOutput},
};
use risc0_zkvm::{ExecutorEnv, InnerReceipt, ProverOpts, Receipt, default_prover};
use crate::{
PRIVACY_PRESERVING_CIRCUIT_ELF, PRIVACY_PRESERVING_CIRCUIT_ID,
error::{InvalidProgramBehaviorError, LeeError},
program::Program,
state::MAX_NUMBER_CHAINED_CALLS,
};
/// Proof of the privacy preserving execution circuit.
#[derive(Debug, Clone, PartialEq, Eq, BorshSerialize, BorshDeserialize)]
pub struct Proof(pub(crate) Vec<u8>);
impl Proof {
#[must_use]
pub fn into_inner(self) -> Vec<u8> {
self.0
}
#[must_use]
pub const fn from_inner(inner: Vec<u8>) -> Self {
Self(inner)
}
pub(crate) fn is_valid_for(&self, circuit_output: &PrivacyPreservingCircuitOutput) -> bool {
let Ok(inner) = borsh::from_slice::<InnerReceipt>(&self.0) else {
return false;
};
let receipt = Receipt::new(inner, circuit_output.to_bytes());
receipt.verify(PRIVACY_PRESERVING_CIRCUIT_ID).is_ok()
}
}
#[derive(Clone)]
pub struct ProgramWithDependencies {
pub program: Program,
// TODO: avoid having a copy of the bytecode of each dependency.
pub dependencies: HashMap<ProgramId, Program>,
}
impl ProgramWithDependencies {
#[must_use]
pub const fn new(program: Program, dependencies: HashMap<ProgramId, Program>) -> Self {
Self {
program,
dependencies,
}
}
}
impl From<Program> for ProgramWithDependencies {
fn from(program: Program) -> Self {
Self::new(program, HashMap::new())
}
}
/// Generates a proof of the execution of a LEE program inside the privacy preserving execution
/// circuit.
pub fn execute_and_prove(
pre_states: Vec<AccountWithMetadata>,
instruction_data: InstructionData,
account_identities: Vec<InputAccountIdentity>,
program_with_dependencies: &ProgramWithDependencies,
) -> Result<(PrivacyPreservingCircuitOutput, Proof), LeeError> {
let ProgramWithDependencies {
program: initial_program,
dependencies,
} = program_with_dependencies;
let mut env_builder = ExecutorEnv::builder();
let mut program_outputs = Vec::new();
let initial_call = ChainedCall {
program_id: initial_program.id(),
instruction_data,
pre_states,
pda_seeds: vec![],
};
let mut chained_calls = VecDeque::from_iter([(initial_call, initial_program, None)]);
let mut chain_calls_counter = 0;
while let Some((chained_call, program, caller_program_id)) = chained_calls.pop_front() {
if chain_calls_counter >= MAX_NUMBER_CHAINED_CALLS {
return Err(LeeError::MaxChainedCallsDepthExceeded);
}
let inner_receipt = execute_and_prove_program(
program,
caller_program_id,
&chained_call.pre_states,
&chained_call.instruction_data,
)?;
let program_output: ProgramOutput = inner_receipt
.journal
.decode()
.map_err(|e| LeeError::ProgramOutputDeserializationError(e.to_string()))?;
// TODO: remove clone
program_outputs.push(program_output.clone());
// Prove circuit.
env_builder.add_assumption(inner_receipt);
for new_call in program_output.chained_calls.into_iter().rev() {
let next_program = dependencies.get(&new_call.program_id).ok_or(
InvalidProgramBehaviorError::UndeclaredProgramDependency {
program_id: new_call.program_id,
},
)?;
chained_calls.push_front((new_call, next_program, Some(chained_call.program_id)));
}
chain_calls_counter = chain_calls_counter
.checked_add(1)
.expect("we check the max depth at the beginning of the loop");
}
let circuit_input = PrivacyPreservingCircuitInput {
program_outputs,
account_identities,
program_id: program_with_dependencies.program.id(),
};
env_builder.write(&circuit_input).unwrap();
let env = env_builder.build().unwrap();
let prover = default_prover();
let opts = ProverOpts::succinct();
let prove_info = prover
.prove_with_opts(env, PRIVACY_PRESERVING_CIRCUIT_ELF, &opts)
.map_err(|e| LeeError::CircuitProvingError(e.to_string()))?;
let proof = Proof(borsh::to_vec(&prove_info.receipt.inner)?);
let circuit_output: PrivacyPreservingCircuitOutput = prove_info
.receipt
.journal
.decode()
.map_err(|e| LeeError::CircuitOutputDeserializationError(e.to_string()))?;
Ok((circuit_output, proof))
}
fn execute_and_prove_program(
program: &Program,
caller_program_id: Option<ProgramId>,
pre_states: &[AccountWithMetadata],
instruction_data: &InstructionData,
) -> Result<Receipt, LeeError> {
// Write inputs to the program
let mut env_builder = ExecutorEnv::builder();
Program::write_inputs(
program.id(),
caller_program_id,
pre_states,
instruction_data,
&mut env_builder,
)?;
let env = env_builder.build().unwrap();
// Prove the program
let prover = default_prover();
Ok(prover
.prove(env, program.elf())
.map_err(|e| LeeError::ProgramProveFailed(e.to_string()))?
.receipt)
}
#[cfg(test)]
mod tests {
#![expect(clippy::shadow_unrelated, reason = "We don't care about it in tests")]
use lee_core::{
Commitment, DUMMY_COMMITMENT_HASH, EncryptedAccountData, EncryptionScheme,
EphemeralPublicKey, Nullifier, PrivacyPreservingCircuitOutput, SharedSecretKey,
account::{Account, AccountId, AccountWithMetadata, Nonce, data::Data},
program::{PdaSeed, PrivateAccountKind},
};
use super::*;
use crate::{
error::LeeError,
privacy_preserving_transaction::circuit::execute_and_prove,
program::Program,
state::{
CommitmentSet,
tests::{test_private_account_keys_1, test_private_account_keys_2},
},
};
fn decrypt_kind(
output: &PrivacyPreservingCircuitOutput,
ssk: &SharedSecretKey,
idx: usize,
) -> PrivateAccountKind {
let (kind, _) = EncryptionScheme::decrypt(
&output.encrypted_private_post_states[idx].ciphertext,
ssk,
&output.new_commitments[idx],
u32::try_from(idx).expect("idx fits in u32"),
)
.unwrap();
kind
}
#[test]
fn proof_inner_roundtrip() {
// `Proof::from_inner(b).into_inner()` must return exactly `b`. Catches
// mutations of `into_inner` returning `vec![]`, `vec![0]`, or `vec![1]`,
// and of `from_inner` discarding its argument.
let bytes = vec![0xDE_u8, 0xAD, 0xBE, 0xEF];
assert_eq!(Proof::from_inner(bytes.clone()).into_inner(), bytes);
assert!(Proof::from_inner(vec![]).into_inner().is_empty());
assert_eq!(Proof::from_inner(vec![0xFF]).into_inner(), vec![0xFF_u8]);
}
#[test]
fn prove_privacy_preserving_execution_circuit_public_and_private_pre_accounts() {
let recipient_keys = test_private_account_keys_1();
let program = crate::test_methods::simple_balance_transfer();
let sender = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 100,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let recipient_account_id = AccountId::for_regular_private_account(&recipient_keys.npk(), 0);
let recipient = AccountWithMetadata::new(Account::default(), false, recipient_account_id);
let balance_to_move: u128 = 37;
let expected_sender_post = Account {
program_owner: program.id(),
balance: 100 - balance_to_move,
nonce: Nonce::default(),
data: Data::default(),
};
let expected_recipient_post = Account {
program_owner: program.id(),
balance: balance_to_move,
nonce: Nonce::private_account_nonce_init(&recipient_account_id),
data: Data::default(),
};
let expected_sender_pre = sender.clone();
let shared_secret =
SharedSecretKey::encapsulate_deterministic(&recipient_keys.vpk(), &[0_u8; 32], 0).0;
let (output, proof) = execute_and_prove(
vec![sender, recipient],
Program::serialize_instruction(balance_to_move).unwrap(),
vec![
InputAccountIdentity::Public,
InputAccountIdentity::PrivateUnauthorized {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(
&recipient_keys.npk(),
&recipient_keys.vpk(),
),
npk: recipient_keys.npk(),
ssk: shared_secret,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
},
],
&crate::test_methods::simple_balance_transfer().into(),
)
.unwrap();
assert!(proof.is_valid_for(&output));
let [sender_pre] = output.public_pre_states.try_into().unwrap();
let [sender_post] = output.public_post_states.try_into().unwrap();
assert_eq!(sender_pre, expected_sender_pre);
assert_eq!(sender_post, expected_sender_post);
assert_eq!(output.new_commitments.len(), 1);
assert_eq!(output.new_nullifiers.len(), 1);
assert_eq!(output.encrypted_private_post_states.len(), 1);
let (_identifier, recipient_post) = EncryptionScheme::decrypt(
&output.encrypted_private_post_states[0].ciphertext,
&shared_secret,
&output.new_commitments[0],
0,
)
.unwrap();
assert_eq!(recipient_post, expected_recipient_post);
}
#[test]
fn prove_privacy_preserving_execution_circuit_fully_private() {
let program = crate::test_methods::simple_balance_transfer();
let sender_keys = test_private_account_keys_1();
let recipient_keys = test_private_account_keys_2();
let sender_nonce = Nonce(0xdead_beef);
let sender_pre = AccountWithMetadata::new(
Account {
balance: 100,
nonce: sender_nonce,
program_owner: program.id(),
data: Data::default(),
},
true,
AccountId::for_regular_private_account(&sender_keys.npk(), 0),
);
let sender_account_id = AccountId::for_regular_private_account(&sender_keys.npk(), 0);
let commitment_sender = Commitment::new(&sender_account_id, &sender_pre.account);
let recipient_account_id = AccountId::for_regular_private_account(&recipient_keys.npk(), 0);
let recipient = AccountWithMetadata::new(Account::default(), false, recipient_account_id);
let balance_to_move: u128 = 37;
let mut commitment_set = CommitmentSet::with_capacity(2);
commitment_set.extend(std::slice::from_ref(&commitment_sender));
let expected_new_nullifiers = vec![
(
Nullifier::for_account_update(&commitment_sender, &sender_keys.nsk),
commitment_set.digest(),
),
(
Nullifier::for_account_initialization(&recipient_account_id),
DUMMY_COMMITMENT_HASH,
),
];
let program = crate::test_methods::simple_balance_transfer();
let expected_private_account_1 = Account {
program_owner: program.id(),
balance: 100 - balance_to_move,
nonce: sender_nonce.private_account_nonce_increment(&sender_keys.nsk),
..Default::default()
};
let expected_private_account_2 = Account {
program_owner: program.id(),
balance: balance_to_move,
nonce: Nonce::private_account_nonce_init(&recipient_account_id),
..Default::default()
};
let expected_new_commitments = vec![
Commitment::new(&sender_account_id, &expected_private_account_1),
Commitment::new(&recipient_account_id, &expected_private_account_2),
];
let shared_secret_1 =
SharedSecretKey::encapsulate_deterministic(&sender_keys.vpk(), &[0_u8; 32], 0).0;
let shared_secret_2 =
SharedSecretKey::encapsulate_deterministic(&recipient_keys.vpk(), &[0_u8; 32], 1).0;
let (output, proof) = execute_and_prove(
vec![sender_pre, recipient],
Program::serialize_instruction(balance_to_move).unwrap(),
vec![
InputAccountIdentity::PrivateAuthorizedUpdate {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(
&sender_keys.npk(),
&sender_keys.vpk(),
),
ssk: shared_secret_1,
nsk: sender_keys.nsk,
membership_proof: commitment_set
.get_proof_for(&commitment_sender)
.expect("sender's commitment must be in the set"),
identifier: 0,
},
InputAccountIdentity::PrivateUnauthorized {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(
&recipient_keys.npk(),
&recipient_keys.vpk(),
),
npk: recipient_keys.npk(),
ssk: shared_secret_2,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
},
],
&program.into(),
)
.unwrap();
assert!(proof.is_valid_for(&output));
assert!(output.public_pre_states.is_empty());
assert!(output.public_post_states.is_empty());
assert_eq!(output.new_commitments, expected_new_commitments);
assert_eq!(output.new_nullifiers, expected_new_nullifiers);
assert_eq!(output.encrypted_private_post_states.len(), 2);
let (_identifier, sender_post) = EncryptionScheme::decrypt(
&output.encrypted_private_post_states[0].ciphertext,
&shared_secret_1,
&expected_new_commitments[0],
0,
)
.unwrap();
assert_eq!(sender_post, expected_private_account_1);
let (_identifier, recipient_post) = EncryptionScheme::decrypt(
&output.encrypted_private_post_states[1].ciphertext,
&shared_secret_2,
&expected_new_commitments[1],
1,
)
.unwrap();
assert_eq!(recipient_post, expected_private_account_2);
}
#[test]
fn circuit_fails_when_chained_validity_windows_have_empty_intersection() {
let account_keys = test_private_account_keys_1();
let pre = AccountWithMetadata::new(
Account::default(),
false,
AccountId::for_regular_private_account(&account_keys.npk(), 0),
);
let validity_window_chain_caller = crate::test_methods::validity_window_chain_caller();
let validity_window = crate::test_methods::validity_window();
let instruction = Program::serialize_instruction((
Some(1_u64),
Some(4_u64),
validity_window.id(),
Some(4_u64),
Some(7_u64),
))
.unwrap();
let shared_secret =
SharedSecretKey::encapsulate_deterministic(&account_keys.vpk(), &[0_u8; 32], 0).0;
let program_with_deps = ProgramWithDependencies::new(
validity_window_chain_caller,
[(validity_window.id(), validity_window)].into(),
);
let result = execute_and_prove(
vec![pre],
instruction,
vec![InputAccountIdentity::PrivateUnauthorized {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(
&account_keys.npk(),
&account_keys.vpk(),
),
npk: account_keys.npk(),
ssk: shared_secret,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
}],
&program_with_deps,
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
/// A private PDA claimed with a non-default identifier produces a ciphertext that decrypts
/// to `PrivateAccountKind::Pda` carrying the correct `(program_id, seed, identifier)`.
#[test]
fn private_pda_claim_with_custom_identifier_encrypts_correct_kind() {
let program = crate::test_methods::pda_claimer();
let keys = test_private_account_keys_1();
let npk = keys.npk();
let seed = PdaSeed::new([42; 32]);
let identifier: u128 = 99;
let shared_secret =
SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let account_id = AccountId::for_private_pda(&program.id(), &seed, &npk, identifier);
let pre_state = AccountWithMetadata::new(Account::default(), false, account_id);
let (output, _proof) = execute_and_prove(
vec![pre_state],
Program::serialize_instruction(seed).unwrap(),
vec![InputAccountIdentity::PrivatePdaInit {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&npk, &keys.vpk()),
npk,
ssk: shared_secret,
identifier,
commitment_root: DUMMY_COMMITMENT_HASH,
seed: None,
}],
&program.clone().into(),
)
.unwrap();
assert_eq!(
decrypt_kind(&output, &shared_secret, 0),
PrivateAccountKind::Pda {
program_id: program.id(),
seed,
identifier
},
);
}
/// PDA init: initializes a new PDA under `simple_balance_transfer`'s ownership.
/// The `simple_transfer_proxy` program chains to `simple_balance_transfer` with `pda_seeds`
/// to establish authorization and the private PDA binding.
#[test]
fn private_pda_init() {
let program = crate::test_methods::simple_transfer_proxy();
let simple_transfer = crate::test_methods::simple_balance_transfer();
let keys = test_private_account_keys_1();
let npk = keys.npk();
let seed = PdaSeed::new([42; 32]);
let shared_secret_pda =
SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
// PDA (new, private PDA)
let pda_id = AccountId::for_private_pda(&program.id(), &seed, &npk, 0);
let pda_pre = AccountWithMetadata::new(Account::default(), false, pda_id);
let auth_id = simple_transfer.id();
let program_with_deps =
ProgramWithDependencies::new(program, [(auth_id, simple_transfer)].into());
// is_withdraw=false triggers init path (1 pre-state)
let instruction = Program::serialize_instruction((seed, auth_id, 0_u128, false)).unwrap();
let result = execute_and_prove(
vec![pda_pre],
instruction,
vec![InputAccountIdentity::PrivatePdaInit {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&npk, &keys.vpk()),
npk,
ssk: shared_secret_pda,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
seed: None,
}],
&program_with_deps,
);
let (output, _proof) = result.expect("PDA init should succeed");
assert_eq!(output.new_commitments.len(), 1);
}
/// PDA withdraw: chains to `simple_balance_transfer` to move balance from PDA to recipient.
/// Uses a default PDA (amount=0) because testing with a pre-funded PDA requires a
/// two-tx sequence with membership proofs.
#[test]
fn private_pda_withdraw() {
let program = crate::test_methods::simple_transfer_proxy();
let simple_transfer = crate::test_methods::simple_balance_transfer();
let keys = test_private_account_keys_1();
let npk = keys.npk();
let seed = PdaSeed::new([42; 32]);
let shared_secret_pda =
SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
// PDA (new, private PDA)
let pda_id = AccountId::for_private_pda(&program.id(), &seed, &npk, 0);
let pda_pre = AccountWithMetadata::new(Account::default(), false, pda_id);
// Recipient (public)
let recipient_id = AccountId::new([88; 32]);
let recipient_pre = AccountWithMetadata::new(
Account {
program_owner: simple_transfer.id(),
balance: 10000,
..Account::default()
},
true,
recipient_id,
);
let auth_id = simple_transfer.id();
let program_with_deps =
ProgramWithDependencies::new(program, [(auth_id, simple_transfer)].into());
// is_withdraw=true, amount=0 (PDA has no balance yet)
let instruction = Program::serialize_instruction((seed, auth_id, 0_u128, true)).unwrap();
let result = execute_and_prove(
vec![pda_pre, recipient_pre],
instruction,
vec![
InputAccountIdentity::PrivatePdaInit {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&npk, &keys.vpk()),
npk,
ssk: shared_secret_pda,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
seed: None,
},
InputAccountIdentity::Public,
],
&program_with_deps,
);
let (output, _proof) = result.expect("PDA withdraw should succeed");
assert_eq!(output.new_commitments.len(), 1);
}
/// Shared regular private account: receives funds via `authenticated_transfer` directly,
/// no custom program needed. This demonstrates the non-PDA shared account flow where
/// keys are derived from GMS via `derive_keys_for_shared_account`. The shared account
/// uses the standard unauthorized private account path and works with auth-transfer's
/// transfer path like any other private account.
#[test]
fn shared_account_receives_via_simple_transfer() {
let program = crate::test_methods::simple_balance_transfer();
let shared_keys = test_private_account_keys_1();
let shared_npk = shared_keys.npk();
let shared_identifier: u128 = 42;
let shared_secret =
SharedSecretKey::encapsulate_deterministic(&shared_keys.vpk(), &[0_u8; 32], 0).0;
// Sender: public account with balance, owned by auth-transfer
let sender_id = AccountId::new([99; 32]);
let sender = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 1000,
..Account::default()
},
true,
sender_id,
);
// Recipient: shared private account (new, unauthorized)
let shared_account_id = AccountId::from((&shared_npk, shared_identifier));
let recipient = AccountWithMetadata::new(Account::default(), false, shared_account_id);
let balance_to_move: u128 = 100;
let instruction = Program::serialize_instruction(balance_to_move).unwrap();
let result = execute_and_prove(
vec![sender, recipient],
instruction,
vec![
InputAccountIdentity::Public,
InputAccountIdentity::PrivateUnauthorized {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(
&shared_npk,
&shared_keys.vpk(),
),
npk: shared_npk,
ssk: shared_secret,
identifier: shared_identifier,
commitment_root: DUMMY_COMMITMENT_HASH,
},
],
&program.into(),
);
let (output, _proof) = result.expect("shared account receive should succeed");
// Sender is public (no commitment), recipient is private (1 commitment)
assert_eq!(output.new_commitments.len(), 1);
}
/// `PrivateAuthorizedInit` with a non-default identifier produces a ciphertext that decrypts
/// to `PrivateAccountKind::Regular` carrying the correct identifier.
#[test]
fn private_authorized_init_encrypts_regular_kind_with_identifier() {
let program = crate::test_methods::claimer();
let keys = test_private_account_keys_1();
let identifier: u128 = 99;
let ssk = SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let account_id = AccountId::for_regular_private_account(&keys.npk(), identifier);
let pre = AccountWithMetadata::new(Account::default(), true, account_id);
let (output, _) = execute_and_prove(
vec![pre],
Program::serialize_instruction(()).unwrap(),
vec![InputAccountIdentity::PrivateAuthorizedInit {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&keys.npk(), &keys.vpk()),
ssk,
nsk: keys.nsk,
identifier,
commitment_root: DUMMY_COMMITMENT_HASH,
}],
&program.into(),
)
.unwrap();
assert_eq!(
decrypt_kind(&output, &ssk, 0),
PrivateAccountKind::Regular(identifier)
);
}
/// `PrivateUnauthorized` with a non-default identifier produces a ciphertext that decrypts
/// to `PrivateAccountKind::Regular` carrying the correct identifier.
#[test]
fn private_unauthorized_init_encrypts_regular_kind_with_identifier() {
let program = crate::test_methods::claimer();
let keys = test_private_account_keys_1();
let identifier: u128 = 99;
let ssk = SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let recipient_id = AccountId::for_regular_private_account(&keys.npk(), identifier);
let recipient = AccountWithMetadata::new(Account::default(), false, recipient_id);
let (output, _) = execute_and_prove(
vec![recipient],
Program::serialize_instruction(()).unwrap(),
vec![InputAccountIdentity::PrivateUnauthorized {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&keys.npk(), &keys.vpk()),
npk: keys.npk(),
ssk,
identifier,
commitment_root: DUMMY_COMMITMENT_HASH,
}],
&program.into(),
)
.unwrap();
assert_eq!(
decrypt_kind(&output, &ssk, 0),
PrivateAccountKind::Regular(identifier)
);
}
/// `PrivateAuthorizedUpdate` with a non-default identifier produces a ciphertext that decrypts
/// to `PrivateAccountKind::Regular` carrying the correct identifier.
#[test]
fn private_authorized_update_encrypts_regular_kind_with_identifier() {
let program = crate::test_methods::noop();
let keys = test_private_account_keys_1();
let identifier: u128 = 99;
let ssk = SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let account_id = AccountId::for_regular_private_account(&keys.npk(), identifier);
let account = Account {
program_owner: program.id(),
balance: 1,
..Account::default()
};
let commitment = Commitment::new(&account_id, &account);
let mut commitment_set = CommitmentSet::with_capacity(1);
commitment_set.extend(std::slice::from_ref(&commitment));
let sender = AccountWithMetadata::new(account, true, account_id);
let (output, _) = execute_and_prove(
vec![sender],
Program::serialize_instruction(()).unwrap(),
vec![InputAccountIdentity::PrivateAuthorizedUpdate {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&keys.npk(), &keys.vpk()),
ssk,
nsk: keys.nsk,
membership_proof: commitment_set.get_proof_for(&commitment).unwrap(),
identifier,
}],
&program.into(),
)
.unwrap();
assert_eq!(
decrypt_kind(&output, &ssk, 0),
PrivateAccountKind::Regular(identifier)
);
}
/// `PrivatePdaUpdate` with a non-default identifier produces a ciphertext that decrypts
/// to `PrivateAccountKind::Pda` carrying the correct `(program_id, seed, identifier)`.
#[test]
fn private_pda_update_encrypts_pda_kind_with_identifier() {
let program = crate::test_methods::pda_spend_proxy();
let simple_transfer = crate::test_methods::simple_balance_transfer();
let keys = test_private_account_keys_1();
let npk = keys.npk();
let seed = PdaSeed::new([42; 32]);
let identifier: u128 = 99;
let ssk = SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let simple_transfer_id = simple_transfer.id();
let pda_id = AccountId::for_private_pda(&program.id(), &seed, &npk, identifier);
let pda_account = Account {
program_owner: simple_transfer_id,
balance: 1,
..Account::default()
};
let pda_commitment = Commitment::new(&pda_id, &pda_account);
let mut commitment_set = CommitmentSet::with_capacity(1);
commitment_set.extend(std::slice::from_ref(&pda_commitment));
let pda_pre = AccountWithMetadata::new(pda_account, true, pda_id);
let recipient_pre =
AccountWithMetadata::new(Account::default(), true, AccountId::new([0; 32]));
let program_with_deps = ProgramWithDependencies::new(
program.clone(),
[(simple_transfer_id, simple_transfer)].into(),
);
let (output, _) = execute_and_prove(
vec![pda_pre, recipient_pre],
Program::serialize_instruction((seed, 1_u128, simple_transfer_id, false)).unwrap(),
vec![
InputAccountIdentity::PrivatePdaUpdate {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&npk, &keys.vpk()),
ssk,
nsk: keys.nsk,
membership_proof: commitment_set.get_proof_for(&pda_commitment).unwrap(),
identifier,
seed: None,
},
InputAccountIdentity::Public,
],
&program_with_deps,
)
.unwrap();
assert_eq!(
decrypt_kind(&output, &ssk, 0),
PrivateAccountKind::Pda {
program_id: program.id(),
seed,
identifier
},
);
}
#[test]
fn private_pda_init_identifier_mismatch_fails() {
let program = crate::test_methods::pda_claimer();
let keys = test_private_account_keys_1();
let npk = keys.npk();
let seed = PdaSeed::new([42; 32]);
let shared_secret =
SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let account_id = AccountId::for_private_pda(&program.id(), &seed, &npk, 5);
let pre_state = AccountWithMetadata::new(Account::default(), false, account_id);
let result = execute_and_prove(
vec![pre_state],
Program::serialize_instruction(seed).unwrap(),
vec![InputAccountIdentity::PrivatePdaInit {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&npk, &keys.vpk()),
npk,
ssk: shared_secret,
identifier: 99,
commitment_root: DUMMY_COMMITMENT_HASH,
seed: None,
}],
&program.into(),
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
#[test]
fn private_pda_update_identifier_mismatch_fails() {
let program = crate::test_methods::pda_spend_proxy();
let simple_transfer = crate::test_methods::simple_balance_transfer();
let keys = test_private_account_keys_1();
let npk = keys.npk();
let seed = PdaSeed::new([42; 32]);
let ssk = SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let simple_transfer_id = simple_transfer.id();
let pda_id = AccountId::for_private_pda(&program.id(), &seed, &npk, 5);
let pda_account = Account {
program_owner: simple_transfer_id,
balance: 1,
..Account::default()
};
let pda_commitment = Commitment::new(&pda_id, &pda_account);
let mut commitment_set = CommitmentSet::with_capacity(1);
commitment_set.extend(std::slice::from_ref(&pda_commitment));
let pda_pre = AccountWithMetadata::new(pda_account, true, pda_id);
let recipient_pre =
AccountWithMetadata::new(Account::default(), true, AccountId::new([0; 32]));
let program_with_deps =
ProgramWithDependencies::new(program, [(simple_transfer_id, simple_transfer)].into());
let result = execute_and_prove(
vec![pda_pre, recipient_pre],
Program::serialize_instruction((seed, 1_u128, simple_transfer_id, false)).unwrap(),
vec![
InputAccountIdentity::PrivatePdaUpdate {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&npk, &keys.vpk()),
ssk,
nsk: keys.nsk,
membership_proof: commitment_set.get_proof_for(&pda_commitment).unwrap(),
identifier: 99,
seed: None,
},
InputAccountIdentity::Public,
],
&program_with_deps,
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
}

177
lee/state_machine/src/privacy_preserving_transaction/circuit/mod.rs Normal file
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@ -0,0 +1,177 @@
use std::collections::{HashMap, VecDeque};
use borsh::{BorshDeserialize, BorshSerialize};
use lee_core::{
InputAccountIdentity, PrivacyPreservingCircuitInput, PrivacyPreservingCircuitOutput,
account::AccountWithMetadata,
program::{ChainedCall, InstructionData, ProgramId, ProgramOutput},
};
use risc0_zkvm::{ExecutorEnv, InnerReceipt, ProverOpts, Receipt, default_prover};
use crate::{
PRIVACY_PRESERVING_CIRCUIT_ELF, PRIVACY_PRESERVING_CIRCUIT_ID,
error::{InvalidProgramBehaviorError, LeeError},
program::Program,
state::MAX_NUMBER_CHAINED_CALLS,
};
/// Proof of the privacy preserving execution circuit.
#[derive(Debug, Clone, PartialEq, Eq, BorshSerialize, BorshDeserialize)]
pub struct Proof(pub(crate) Vec<u8>);
impl Proof {
#[must_use]
pub fn into_inner(self) -> Vec<u8> {
self.0
}
#[must_use]
pub const fn from_inner(inner: Vec<u8>) -> Self {
Self(inner)
}
pub(crate) fn is_valid_for(&self, circuit_output: &PrivacyPreservingCircuitOutput) -> bool {
let Ok(inner) = borsh::from_slice::<InnerReceipt>(&self.0) else {
return false;
};
let receipt = Receipt::new(inner, circuit_output.to_bytes());
receipt.verify(PRIVACY_PRESERVING_CIRCUIT_ID).is_ok()
}
}
#[derive(Clone)]
pub struct ProgramWithDependencies {
pub program: Program,
// TODO: avoid having a copy of the bytecode of each dependency.
pub dependencies: HashMap<ProgramId, Program>,
}
impl ProgramWithDependencies {
#[must_use]
pub const fn new(program: Program, dependencies: HashMap<ProgramId, Program>) -> Self {
Self {
program,
dependencies,
}
}
}
impl From<Program> for ProgramWithDependencies {
fn from(program: Program) -> Self {
Self::new(program, HashMap::new())
}
}
/// Generates a proof of the execution of a LEE program inside the privacy preserving execution
/// circuit.
pub fn execute_and_prove(
pre_states: Vec<AccountWithMetadata>,
instruction_data: InstructionData,
account_identities: Vec<InputAccountIdentity>,
program_with_dependencies: &ProgramWithDependencies,
) -> Result<(PrivacyPreservingCircuitOutput, Proof), LeeError> {
let ProgramWithDependencies {
program: initial_program,
dependencies,
} = program_with_dependencies;
let mut env_builder = ExecutorEnv::builder();
let mut program_outputs = Vec::new();
let initial_call = ChainedCall {
program_id: initial_program.id(),
instruction_data,
pre_states,
pda_seeds: vec![],
};
let mut chained_calls = VecDeque::from_iter([(initial_call, initial_program, None)]);
let mut chain_calls_counter = 0;
while let Some((chained_call, program, caller_program_id)) = chained_calls.pop_front() {
if chain_calls_counter >= MAX_NUMBER_CHAINED_CALLS {
return Err(LeeError::MaxChainedCallsDepthExceeded);
}
let inner_receipt = execute_and_prove_program(
program,
caller_program_id,
&chained_call.pre_states,
&chained_call.instruction_data,
)?;
let program_output: ProgramOutput = inner_receipt
.journal
.decode()
.map_err(|e| LeeError::ProgramOutputDeserializationError(e.to_string()))?;
// TODO: remove clone
program_outputs.push(program_output.clone());
// Prove circuit.
env_builder.add_assumption(inner_receipt);
for new_call in program_output.chained_calls.into_iter().rev() {
let next_program = dependencies.get(&new_call.program_id).ok_or(
InvalidProgramBehaviorError::UndeclaredProgramDependency {
program_id: new_call.program_id,
},
)?;
chained_calls.push_front((new_call, next_program, Some(chained_call.program_id)));
}
chain_calls_counter = chain_calls_counter
.checked_add(1)
.expect("we check the max depth at the beginning of the loop");
}
let circuit_input = PrivacyPreservingCircuitInput {
program_outputs,
account_identities,
program_id: program_with_dependencies.program.id(),
};
env_builder.write(&circuit_input).unwrap();
let env = env_builder.build().unwrap();
let prover = default_prover();
let opts = ProverOpts::succinct();
let prove_info = prover
.prove_with_opts(env, PRIVACY_PRESERVING_CIRCUIT_ELF, &opts)
.map_err(|e| LeeError::CircuitProvingError(e.to_string()))?;
let proof = Proof(borsh::to_vec(&prove_info.receipt.inner)?);
let circuit_output: PrivacyPreservingCircuitOutput = prove_info
.receipt
.journal
.decode()
.map_err(|e| LeeError::CircuitOutputDeserializationError(e.to_string()))?;
Ok((circuit_output, proof))
}
fn execute_and_prove_program(
program: &Program,
caller_program_id: Option<ProgramId>,
pre_states: &[AccountWithMetadata],
instruction_data: &InstructionData,
) -> Result<Receipt, LeeError> {
// Write inputs to the program
let mut env_builder = ExecutorEnv::builder();
Program::write_inputs(
program.id(),
caller_program_id,
pre_states,
instruction_data,
&mut env_builder,
)?;
let env = env_builder.build().unwrap();
// Prove the program
let prover = default_prover();
Ok(prover
.prove(env, program.elf())
.map_err(|e| LeeError::ProgramProveFailed(e.to_string()))?
.receipt)
}
#[cfg(test)]
mod tests;

731
lee/state_machine/src/privacy_preserving_transaction/circuit/tests.rs Normal file
View File

@ -0,0 +1,731 @@
#![expect(clippy::shadow_unrelated, reason = "We don't care about it in tests")]
use lee_core::{
Commitment, DUMMY_COMMITMENT_HASH, EncryptedAccountData, EncryptionScheme, EphemeralPublicKey,
Nullifier, PrivacyPreservingCircuitOutput, SharedSecretKey,
account::{Account, AccountId, AccountWithMetadata, Nonce, data::Data},
program::{PdaSeed, PrivateAccountKind},
};
use super::*;
use crate::{
error::LeeError,
privacy_preserving_transaction::circuit::execute_and_prove,
program::Program,
state::{
CommitmentSet,
tests::{test_private_account_keys_1, test_private_account_keys_2},
},
};
fn decrypt_kind(
output: &PrivacyPreservingCircuitOutput,
ssk: &SharedSecretKey,
idx: usize,
) -> PrivateAccountKind {
let (kind, _) = EncryptionScheme::decrypt(
&output.encrypted_private_post_states[idx].ciphertext,
ssk,
&output.new_commitments[idx],
u32::try_from(idx).expect("idx fits in u32"),
)
.unwrap();
kind
}
#[test]
fn proof_inner_roundtrip() {
// `Proof::from_inner(b).into_inner()` must return exactly `b`. Catches
// mutations of `into_inner` returning `vec![]`, `vec![0]`, or `vec![1]`,
// and of `from_inner` discarding its argument.
let bytes = vec![0xDE_u8, 0xAD, 0xBE, 0xEF];
assert_eq!(Proof::from_inner(bytes.clone()).into_inner(), bytes);
assert!(Proof::from_inner(vec![]).into_inner().is_empty());
assert_eq!(Proof::from_inner(vec![0xFF]).into_inner(), vec![0xFF_u8]);
}
#[test]
fn prove_privacy_preserving_execution_circuit_public_and_private_pre_accounts() {
let recipient_keys = test_private_account_keys_1();
let program = crate::test_methods::simple_balance_transfer();
let sender = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 100,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let recipient_account_id = AccountId::for_regular_private_account(&recipient_keys.npk(), 0);
let recipient = AccountWithMetadata::new(Account::default(), false, recipient_account_id);
let balance_to_move: u128 = 37;
let expected_sender_post = Account {
program_owner: program.id(),
balance: 100 - balance_to_move,
nonce: Nonce::default(),
data: Data::default(),
};
let expected_recipient_post = Account {
program_owner: program.id(),
balance: balance_to_move,
nonce: Nonce::private_account_nonce_init(&recipient_account_id),
data: Data::default(),
};
let expected_sender_pre = sender.clone();
let shared_secret =
SharedSecretKey::encapsulate_deterministic(&recipient_keys.vpk(), &[0_u8; 32], 0).0;
let (output, proof) = execute_and_prove(
vec![sender, recipient],
Program::serialize_instruction(balance_to_move).unwrap(),
vec![
InputAccountIdentity::Public,
InputAccountIdentity::PrivateUnauthorized {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(
&recipient_keys.npk(),
&recipient_keys.vpk(),
),
npk: recipient_keys.npk(),
ssk: shared_secret,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
},
],
&crate::test_methods::simple_balance_transfer().into(),
)
.unwrap();
assert!(proof.is_valid_for(&output));
let [sender_pre] = output.public_pre_states.try_into().unwrap();
let [sender_post] = output.public_post_states.try_into().unwrap();
assert_eq!(sender_pre, expected_sender_pre);
assert_eq!(sender_post, expected_sender_post);
assert_eq!(output.new_commitments.len(), 1);
assert_eq!(output.new_nullifiers.len(), 1);
assert_eq!(output.encrypted_private_post_states.len(), 1);
let (_identifier, recipient_post) = EncryptionScheme::decrypt(
&output.encrypted_private_post_states[0].ciphertext,
&shared_secret,
&output.new_commitments[0],
0,
)
.unwrap();
assert_eq!(recipient_post, expected_recipient_post);
}
#[test]
fn prove_privacy_preserving_execution_circuit_fully_private() {
let program = crate::test_methods::simple_balance_transfer();
let sender_keys = test_private_account_keys_1();
let recipient_keys = test_private_account_keys_2();
let sender_nonce = Nonce(0xdead_beef);
let sender_pre = AccountWithMetadata::new(
Account {
balance: 100,
nonce: sender_nonce,
program_owner: program.id(),
data: Data::default(),
},
true,
AccountId::for_regular_private_account(&sender_keys.npk(), 0),
);
let sender_account_id = AccountId::for_regular_private_account(&sender_keys.npk(), 0);
let commitment_sender = Commitment::new(&sender_account_id, &sender_pre.account);
let recipient_account_id = AccountId::for_regular_private_account(&recipient_keys.npk(), 0);
let recipient = AccountWithMetadata::new(Account::default(), false, recipient_account_id);
let balance_to_move: u128 = 37;
let mut commitment_set = CommitmentSet::with_capacity(2);
commitment_set.extend(std::slice::from_ref(&commitment_sender));
let expected_new_nullifiers = vec![
(
Nullifier::for_account_update(&commitment_sender, &sender_keys.nsk),
commitment_set.digest(),
),
(
Nullifier::for_account_initialization(&recipient_account_id),
DUMMY_COMMITMENT_HASH,
),
];
let program = crate::test_methods::simple_balance_transfer();
let expected_private_account_1 = Account {
program_owner: program.id(),
balance: 100 - balance_to_move,
nonce: sender_nonce.private_account_nonce_increment(&sender_keys.nsk),
..Default::default()
};
let expected_private_account_2 = Account {
program_owner: program.id(),
balance: balance_to_move,
nonce: Nonce::private_account_nonce_init(&recipient_account_id),
..Default::default()
};
let expected_new_commitments = vec![
Commitment::new(&sender_account_id, &expected_private_account_1),
Commitment::new(&recipient_account_id, &expected_private_account_2),
];
let shared_secret_1 =
SharedSecretKey::encapsulate_deterministic(&sender_keys.vpk(), &[0_u8; 32], 0).0;
let shared_secret_2 =
SharedSecretKey::encapsulate_deterministic(&recipient_keys.vpk(), &[0_u8; 32], 1).0;
let (output, proof) = execute_and_prove(
vec![sender_pre, recipient],
Program::serialize_instruction(balance_to_move).unwrap(),
vec![
InputAccountIdentity::PrivateAuthorizedUpdate {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(
&sender_keys.npk(),
&sender_keys.vpk(),
),
ssk: shared_secret_1,
nsk: sender_keys.nsk,
membership_proof: commitment_set
.get_proof_for(&commitment_sender)
.expect("sender's commitment must be in the set"),
identifier: 0,
},
InputAccountIdentity::PrivateUnauthorized {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(
&recipient_keys.npk(),
&recipient_keys.vpk(),
),
npk: recipient_keys.npk(),
ssk: shared_secret_2,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
},
],
&program.into(),
)
.unwrap();
assert!(proof.is_valid_for(&output));
assert!(output.public_pre_states.is_empty());
assert!(output.public_post_states.is_empty());
assert_eq!(output.new_commitments, expected_new_commitments);
assert_eq!(output.new_nullifiers, expected_new_nullifiers);
assert_eq!(output.encrypted_private_post_states.len(), 2);
let (_identifier, sender_post) = EncryptionScheme::decrypt(
&output.encrypted_private_post_states[0].ciphertext,
&shared_secret_1,
&expected_new_commitments[0],
0,
)
.unwrap();
assert_eq!(sender_post, expected_private_account_1);
let (_identifier, recipient_post) = EncryptionScheme::decrypt(
&output.encrypted_private_post_states[1].ciphertext,
&shared_secret_2,
&expected_new_commitments[1],
1,
)
.unwrap();
assert_eq!(recipient_post, expected_private_account_2);
}
#[test]
fn circuit_fails_when_chained_validity_windows_have_empty_intersection() {
let account_keys = test_private_account_keys_1();
let pre = AccountWithMetadata::new(
Account::default(),
false,
AccountId::for_regular_private_account(&account_keys.npk(), 0),
);
let validity_window_chain_caller = crate::test_methods::validity_window_chain_caller();
let validity_window = crate::test_methods::validity_window();
let instruction = Program::serialize_instruction((
Some(1_u64),
Some(4_u64),
validity_window.id(),
Some(4_u64),
Some(7_u64),
))
.unwrap();
let shared_secret =
SharedSecretKey::encapsulate_deterministic(&account_keys.vpk(), &[0_u8; 32], 0).0;
let program_with_deps = ProgramWithDependencies::new(
validity_window_chain_caller,
[(validity_window.id(), validity_window)].into(),
);
let result = execute_and_prove(
vec![pre],
instruction,
vec![InputAccountIdentity::PrivateUnauthorized {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(
&account_keys.npk(),
&account_keys.vpk(),
),
npk: account_keys.npk(),
ssk: shared_secret,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
}],
&program_with_deps,
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
/// A private PDA claimed with a non-default identifier produces a ciphertext that decrypts
/// to `PrivateAccountKind::Pda` carrying the correct `(program_id, seed, identifier)`.
#[test]
fn private_pda_claim_with_custom_identifier_encrypts_correct_kind() {
let program = crate::test_methods::pda_claimer();
let keys = test_private_account_keys_1();
let npk = keys.npk();
let seed = PdaSeed::new([42; 32]);
let identifier: u128 = 99;
let shared_secret = SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let account_id = AccountId::for_private_pda(&program.id(), &seed, &npk, identifier);
let pre_state = AccountWithMetadata::new(Account::default(), false, account_id);
let (output, _proof) = execute_and_prove(
vec![pre_state],
Program::serialize_instruction(seed).unwrap(),
vec![InputAccountIdentity::PrivatePdaInit {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&npk, &keys.vpk()),
npk,
ssk: shared_secret,
identifier,
commitment_root: DUMMY_COMMITMENT_HASH,
seed: None,
}],
&program.clone().into(),
)
.unwrap();
assert_eq!(
decrypt_kind(&output, &shared_secret, 0),
PrivateAccountKind::Pda {
program_id: program.id(),
seed,
identifier
},
);
}
/// PDA init: initializes a new PDA under `simple_balance_transfer`'s ownership.
/// The `simple_transfer_proxy` program chains to `simple_balance_transfer` with `pda_seeds`
/// to establish authorization and the private PDA binding.
#[test]
fn private_pda_init() {
let program = crate::test_methods::simple_transfer_proxy();
let simple_transfer = crate::test_methods::simple_balance_transfer();
let keys = test_private_account_keys_1();
let npk = keys.npk();
let seed = PdaSeed::new([42; 32]);
let shared_secret_pda =
SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
// PDA (new, private PDA)
let pda_id = AccountId::for_private_pda(&program.id(), &seed, &npk, 0);
let pda_pre = AccountWithMetadata::new(Account::default(), false, pda_id);
let auth_id = simple_transfer.id();
let program_with_deps =
ProgramWithDependencies::new(program, [(auth_id, simple_transfer)].into());
// is_withdraw=false triggers init path (1 pre-state)
let instruction = Program::serialize_instruction((seed, auth_id, 0_u128, false)).unwrap();
let result = execute_and_prove(
vec![pda_pre],
instruction,
vec![InputAccountIdentity::PrivatePdaInit {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&npk, &keys.vpk()),
npk,
ssk: shared_secret_pda,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
seed: None,
}],
&program_with_deps,
);
let (output, _proof) = result.expect("PDA init should succeed");
assert_eq!(output.new_commitments.len(), 1);
}
/// PDA withdraw: chains to `simple_balance_transfer` to move balance from PDA to recipient.
/// Uses a default PDA (amount=0) because testing with a pre-funded PDA requires a
/// two-tx sequence with membership proofs.
#[test]
fn private_pda_withdraw() {
let program = crate::test_methods::simple_transfer_proxy();
let simple_transfer = crate::test_methods::simple_balance_transfer();
let keys = test_private_account_keys_1();
let npk = keys.npk();
let seed = PdaSeed::new([42; 32]);
let shared_secret_pda =
SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
// PDA (new, private PDA)
let pda_id = AccountId::for_private_pda(&program.id(), &seed, &npk, 0);
let pda_pre = AccountWithMetadata::new(Account::default(), false, pda_id);
// Recipient (public)
let recipient_id = AccountId::new([88; 32]);
let recipient_pre = AccountWithMetadata::new(
Account {
program_owner: simple_transfer.id(),
balance: 10000,
..Account::default()
},
true,
recipient_id,
);
let auth_id = simple_transfer.id();
let program_with_deps =
ProgramWithDependencies::new(program, [(auth_id, simple_transfer)].into());
// is_withdraw=true, amount=0 (PDA has no balance yet)
let instruction = Program::serialize_instruction((seed, auth_id, 0_u128, true)).unwrap();
let result = execute_and_prove(
vec![pda_pre, recipient_pre],
instruction,
vec![
InputAccountIdentity::PrivatePdaInit {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&npk, &keys.vpk()),
npk,
ssk: shared_secret_pda,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
seed: None,
},
InputAccountIdentity::Public,
],
&program_with_deps,
);
let (output, _proof) = result.expect("PDA withdraw should succeed");
assert_eq!(output.new_commitments.len(), 1);
}
/// Shared regular private account: receives funds via `authenticated_transfer` directly,
/// no custom program needed. This demonstrates the non-PDA shared account flow where
/// keys are derived from GMS via `derive_keys_for_shared_account`. The shared account
/// uses the standard unauthorized private account path and works with auth-transfer's
/// transfer path like any other private account.
#[test]
fn shared_account_receives_via_simple_transfer() {
let program = crate::test_methods::simple_balance_transfer();
let shared_keys = test_private_account_keys_1();
let shared_npk = shared_keys.npk();
let shared_identifier: u128 = 42;
let shared_secret =
SharedSecretKey::encapsulate_deterministic(&shared_keys.vpk(), &[0_u8; 32], 0).0;
// Sender: public account with balance, owned by auth-transfer
let sender_id = AccountId::new([99; 32]);
let sender = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 1000,
..Account::default()
},
true,
sender_id,
);
// Recipient: shared private account (new, unauthorized)
let shared_account_id = AccountId::from((&shared_npk, shared_identifier));
let recipient = AccountWithMetadata::new(Account::default(), false, shared_account_id);
let balance_to_move: u128 = 100;
let instruction = Program::serialize_instruction(balance_to_move).unwrap();
let result = execute_and_prove(
vec![sender, recipient],
instruction,
vec![
InputAccountIdentity::Public,
InputAccountIdentity::PrivateUnauthorized {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&shared_npk, &shared_keys.vpk()),
npk: shared_npk,
ssk: shared_secret,
identifier: shared_identifier,
commitment_root: DUMMY_COMMITMENT_HASH,
},
],
&program.into(),
);
let (output, _proof) = result.expect("shared account receive should succeed");
// Sender is public (no commitment), recipient is private (1 commitment)
assert_eq!(output.new_commitments.len(), 1);
}
/// `PrivateAuthorizedInit` with a non-default identifier produces a ciphertext that decrypts
/// to `PrivateAccountKind::Regular` carrying the correct identifier.
#[test]
fn private_authorized_init_encrypts_regular_kind_with_identifier() {
let program = crate::test_methods::claimer();
let keys = test_private_account_keys_1();
let identifier: u128 = 99;
let ssk = SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let account_id = AccountId::for_regular_private_account(&keys.npk(), identifier);
let pre = AccountWithMetadata::new(Account::default(), true, account_id);
let (output, _) = execute_and_prove(
vec![pre],
Program::serialize_instruction(()).unwrap(),
vec![InputAccountIdentity::PrivateAuthorizedInit {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&keys.npk(), &keys.vpk()),
ssk,
nsk: keys.nsk,
identifier,
commitment_root: DUMMY_COMMITMENT_HASH,
}],
&program.into(),
)
.unwrap();
assert_eq!(
decrypt_kind(&output, &ssk, 0),
PrivateAccountKind::Regular(identifier)
);
}
/// `PrivateUnauthorized` with a non-default identifier produces a ciphertext that decrypts
/// to `PrivateAccountKind::Regular` carrying the correct identifier.
#[test]
fn private_unauthorized_init_encrypts_regular_kind_with_identifier() {
let program = crate::test_methods::claimer();
let keys = test_private_account_keys_1();
let identifier: u128 = 99;
let ssk = SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let recipient_id = AccountId::for_regular_private_account(&keys.npk(), identifier);
let recipient = AccountWithMetadata::new(Account::default(), false, recipient_id);
let (output, _) = execute_and_prove(
vec![recipient],
Program::serialize_instruction(()).unwrap(),
vec![InputAccountIdentity::PrivateUnauthorized {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&keys.npk(), &keys.vpk()),
npk: keys.npk(),
ssk,
identifier,
commitment_root: DUMMY_COMMITMENT_HASH,
}],
&program.into(),
)
.unwrap();
assert_eq!(
decrypt_kind(&output, &ssk, 0),
PrivateAccountKind::Regular(identifier)
);
}
/// `PrivateAuthorizedUpdate` with a non-default identifier produces a ciphertext that decrypts
/// to `PrivateAccountKind::Regular` carrying the correct identifier.
#[test]
fn private_authorized_update_encrypts_regular_kind_with_identifier() {
let program = crate::test_methods::noop();
let keys = test_private_account_keys_1();
let identifier: u128 = 99;
let ssk = SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let account_id = AccountId::for_regular_private_account(&keys.npk(), identifier);
let account = Account {
program_owner: program.id(),
balance: 1,
..Account::default()
};
let commitment = Commitment::new(&account_id, &account);
let mut commitment_set = CommitmentSet::with_capacity(1);
commitment_set.extend(std::slice::from_ref(&commitment));
let sender = AccountWithMetadata::new(account, true, account_id);
let (output, _) = execute_and_prove(
vec![sender],
Program::serialize_instruction(()).unwrap(),
vec![InputAccountIdentity::PrivateAuthorizedUpdate {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&keys.npk(), &keys.vpk()),
ssk,
nsk: keys.nsk,
membership_proof: commitment_set.get_proof_for(&commitment).unwrap(),
identifier,
}],
&program.into(),
)
.unwrap();
assert_eq!(
decrypt_kind(&output, &ssk, 0),
PrivateAccountKind::Regular(identifier)
);
}
/// `PrivatePdaUpdate` with a non-default identifier produces a ciphertext that decrypts
/// to `PrivateAccountKind::Pda` carrying the correct `(program_id, seed, identifier)`.
#[test]
fn private_pda_update_encrypts_pda_kind_with_identifier() {
let program = crate::test_methods::pda_spend_proxy();
let simple_transfer = crate::test_methods::simple_balance_transfer();
let keys = test_private_account_keys_1();
let npk = keys.npk();
let seed = PdaSeed::new([42; 32]);
let identifier: u128 = 99;
let ssk = SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let simple_transfer_id = simple_transfer.id();
let pda_id = AccountId::for_private_pda(&program.id(), &seed, &npk, identifier);
let pda_account = Account {
program_owner: simple_transfer_id,
balance: 1,
..Account::default()
};
let pda_commitment = Commitment::new(&pda_id, &pda_account);
let mut commitment_set = CommitmentSet::with_capacity(1);
commitment_set.extend(std::slice::from_ref(&pda_commitment));
let pda_pre = AccountWithMetadata::new(pda_account, true, pda_id);
let recipient_pre = AccountWithMetadata::new(Account::default(), true, AccountId::new([0; 32]));
let program_with_deps = ProgramWithDependencies::new(
program.clone(),
[(simple_transfer_id, simple_transfer)].into(),
);
let (output, _) = execute_and_prove(
vec![pda_pre, recipient_pre],
Program::serialize_instruction((seed, 1_u128, simple_transfer_id, false)).unwrap(),
vec![
InputAccountIdentity::PrivatePdaUpdate {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&npk, &keys.vpk()),
ssk,
nsk: keys.nsk,
membership_proof: commitment_set.get_proof_for(&pda_commitment).unwrap(),
identifier,
seed: None,
},
InputAccountIdentity::Public,
],
&program_with_deps,
)
.unwrap();
assert_eq!(
decrypt_kind(&output, &ssk, 0),
PrivateAccountKind::Pda {
program_id: program.id(),
seed,
identifier
},
);
}
#[test]
fn private_pda_init_identifier_mismatch_fails() {
let program = crate::test_methods::pda_claimer();
let keys = test_private_account_keys_1();
let npk = keys.npk();
let seed = PdaSeed::new([42; 32]);
let shared_secret = SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let account_id = AccountId::for_private_pda(&program.id(), &seed, &npk, 5);
let pre_state = AccountWithMetadata::new(Account::default(), false, account_id);
let result = execute_and_prove(
vec![pre_state],
Program::serialize_instruction(seed).unwrap(),
vec![InputAccountIdentity::PrivatePdaInit {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&npk, &keys.vpk()),
npk,
ssk: shared_secret,
identifier: 99,
commitment_root: DUMMY_COMMITMENT_HASH,
seed: None,
}],
&program.into(),
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
#[test]
fn private_pda_update_identifier_mismatch_fails() {
let program = crate::test_methods::pda_spend_proxy();
let simple_transfer = crate::test_methods::simple_balance_transfer();
let keys = test_private_account_keys_1();
let npk = keys.npk();
let seed = PdaSeed::new([42; 32]);
let ssk = SharedSecretKey::encapsulate_deterministic(&keys.vpk(), &[0_u8; 32], 0).0;
let simple_transfer_id = simple_transfer.id();
let pda_id = AccountId::for_private_pda(&program.id(), &seed, &npk, 5);
let pda_account = Account {
program_owner: simple_transfer_id,
balance: 1,
..Account::default()
};
let pda_commitment = Commitment::new(&pda_id, &pda_account);
let mut commitment_set = CommitmentSet::with_capacity(1);
commitment_set.extend(std::slice::from_ref(&pda_commitment));
let pda_pre = AccountWithMetadata::new(pda_account, true, pda_id);
let recipient_pre = AccountWithMetadata::new(Account::default(), true, AccountId::new([0; 32]));
let program_with_deps =
ProgramWithDependencies::new(program, [(simple_transfer_id, simple_transfer)].into());
let result = execute_and_prove(
vec![pda_pre, recipient_pre],
Program::serialize_instruction((seed, 1_u128, simple_transfer_id, false)).unwrap(),
vec![
InputAccountIdentity::PrivatePdaUpdate {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(&npk, &keys.vpk()),
ssk,
nsk: keys.nsk,
membership_proof: commitment_set.get_proof_for(&pda_commitment).unwrap(),
identifier: 99,
seed: None,
},
InputAccountIdentity::Public,
],
&program_with_deps,
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}

40
lee/state_machine/src/program.rs → lee/state_machine/src/program/mod.rs
View File

@ -111,42 +111,4 @@ impl Program {
}
#[cfg(test)]
mod tests {
use lee_core::account::{Account, AccountId, AccountWithMetadata};
use crate::program::Program;
#[test]
fn program_execution() {
let program = crate::test_methods::simple_balance_transfer();
let balance_to_move: u128 = 11_223_344_556_677;
let instruction_data = Program::serialize_instruction(balance_to_move).unwrap();
let sender = AccountWithMetadata::new(
Account {
balance: 77_665_544_332_211,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let recipient =
AccountWithMetadata::new(Account::default(), false, AccountId::new([1; 32]));
let expected_sender_post = Account {
balance: 77_665_544_332_211 - balance_to_move,
..Account::default()
};
let expected_recipient_post = Account {
balance: balance_to_move,
..Account::default()
};
let program_output = program
.execute(None, &[sender, recipient], &instruction_data)
.unwrap();
let [sender_post, recipient_post] = program_output.post_states.try_into().unwrap();
assert_eq!(sender_post.account(), &expected_sender_post);
assert_eq!(recipient_post.account(), &expected_recipient_post);
}
}
mod tests;

36
lee/state_machine/src/program/tests.rs Normal file
View File

@ -0,0 +1,36 @@
use lee_core::account::{Account, AccountId, AccountWithMetadata};
use crate::program::Program;
#[test]
fn program_execution() {
let program = crate::test_methods::simple_balance_transfer();
let balance_to_move: u128 = 11_223_344_556_677;
let instruction_data = Program::serialize_instruction(balance_to_move).unwrap();
let sender = AccountWithMetadata::new(
Account {
balance: 77_665_544_332_211,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let recipient = AccountWithMetadata::new(Account::default(), false, AccountId::new([1; 32]));
let expected_sender_post = Account {
balance: 77_665_544_332_211 - balance_to_move,
..Account::default()
};
let expected_recipient_post = Account {
balance: balance_to_move,
..Account::default()
};
let program_output = program
.execute(None, &[sender, recipient], &instruction_data)
.unwrap();
let [sender_post, recipient_post] = program_output.post_states.try_into().unwrap();
assert_eq!(sender_post.account(), &expected_sender_post);
assert_eq!(recipient_post.account(), &expected_recipient_post);
}

4438
lee/state_machine/src/state.rs
View File

File diff suppressed because it is too large Load Diff

320
lee/state_machine/src/state/mod.rs Normal file
View File

@ -0,0 +1,320 @@
use std::collections::{BTreeSet, HashMap, HashSet};
use borsh::{BorshDeserialize, BorshSerialize};
use lee_core::{
BlockId, Commitment, CommitmentSetDigest, DUMMY_COMMITMENT, MembershipProof, Nullifier,
Timestamp,
account::{Account, AccountId},
program::ProgramId,
};
use crate::{
error::LeeError,
merkle_tree::MerkleTree,
privacy_preserving_transaction::PrivacyPreservingTransaction,
program::Program,
program_deployment_transaction::ProgramDeploymentTransaction,
public_transaction::PublicTransaction,
validated_state_diff::{StateDiff, ValidatedStateDiff},
};
pub const MAX_NUMBER_CHAINED_CALLS: usize = 10;
#[derive(Clone, BorshSerialize, BorshDeserialize)]
#[cfg_attr(test, derive(Debug, PartialEq, Eq))]
pub struct CommitmentSet {
merkle_tree: MerkleTree,
commitments: HashMap<Commitment, usize>,
root_history: HashSet<CommitmentSetDigest>,
}
impl CommitmentSet {
pub(crate) fn digest(&self) -> CommitmentSetDigest {
self.merkle_tree.root()
}
/// Queries the `CommitmentSet` for a membership proof of commitment.
pub fn get_proof_for(&self, commitment: &Commitment) -> Option<MembershipProof> {
let index = *self.commitments.get(commitment)?;
self.merkle_tree
.get_authentication_path_for(index)
.map(|path| (index, path))
}
/// Inserts a list of commitments to the `CommitmentSet`.
pub(crate) fn extend(&mut self, commitments: &[Commitment]) {
for commitment in commitments.iter().cloned() {
let index = self.merkle_tree.insert(commitment.to_byte_array());
self.commitments.insert(commitment, index);
}
self.root_history.insert(self.digest());
}
fn contains(&self, commitment: &Commitment) -> bool {
self.commitments.contains_key(commitment)
}
/// Initializes an empty `CommitmentSet` with a given capacity.
/// If the capacity is not a `power_of_two`, then capacity is taken
/// to be the next `power_of_two`.
pub(crate) fn with_capacity(capacity: usize) -> Self {
Self {
merkle_tree: MerkleTree::with_capacity(capacity),
commitments: HashMap::new(),
root_history: HashSet::new(),
}
}
}
#[cfg_attr(test, derive(Debug, PartialEq, Eq))]
#[derive(Clone)]
struct NullifierSet(BTreeSet<Nullifier>);
impl NullifierSet {
const fn new() -> Self {
Self(BTreeSet::new())
}
fn extend(&mut self, new_nullifiers: &[Nullifier]) {
self.0.extend(new_nullifiers);
}
fn contains(&self, nullifier: &Nullifier) -> bool {
self.0.contains(nullifier)
}
}
impl BorshSerialize for NullifierSet {
fn serialize<W: std::io::Write>(&self, writer: &mut W) -> std::io::Result<()> {
self.0.iter().collect::<Vec<_>>().serialize(writer)
}
}
impl BorshDeserialize for NullifierSet {
fn deserialize_reader<R: std::io::Read>(reader: &mut R) -> std::io::Result<Self> {
let vec = Vec::<Nullifier>::deserialize_reader(reader)?;
let mut set = BTreeSet::new();
for n in vec {
if !set.insert(n) {
return Err(std::io::Error::new(
std::io::ErrorKind::InvalidData,
"duplicate nullifier in NullifierSet",
));
}
}
Ok(Self(set))
}
}
#[derive(Clone, BorshSerialize, BorshDeserialize)]
#[cfg_attr(test, derive(Debug, PartialEq, Eq))]
pub struct V03State {
public_state: HashMap<AccountId, Account>,
private_state: (CommitmentSet, NullifierSet),
programs: HashMap<ProgramId, Program>,
}
impl Default for V03State {
fn default() -> Self {
let mut commitment_set = CommitmentSet::with_capacity(32);
commitment_set.extend(&[DUMMY_COMMITMENT]);
let nullifier_set = NullifierSet::new();
let private_state = (commitment_set, nullifier_set);
Self {
public_state: HashMap::default(),
private_state,
programs: HashMap::default(),
}
}
}
impl V03State {
#[must_use]
pub fn new() -> Self {
Self::default()
}
/// Initializes state with given public account balances leaving other account fields at their
/// default values.
#[must_use]
pub fn with_public_account_balances(
mut self,
balances: impl IntoIterator<Item = (AccountId, u128)>,
) -> Self {
let public_accounts = balances.into_iter().map(|(account_id, balance)| {
(
account_id,
Account {
balance,
..Account::default()
},
)
});
self.public_state.extend(public_accounts);
self
}
/// Initializes state with given public accounts.
#[must_use]
pub fn with_public_accounts(
mut self,
public_accounts: impl IntoIterator<Item = (AccountId, Account)>,
) -> Self {
self.public_state.extend(public_accounts);
self
}
/// Initializes state with given private accounts.
#[must_use]
pub fn with_private_accounts(
mut self,
private_accounts: impl IntoIterator<Item = (Commitment, Nullifier)>,
) -> Self {
let (commitments, nullifiers): (Vec<Commitment>, Vec<Nullifier>) =
private_accounts.into_iter().unzip();
self.private_state.0.extend(&commitments);
self.private_state.1.extend(&nullifiers);
self
}
/// Initializes state with given builtin programs.
#[must_use]
pub fn with_programs(mut self, programs: impl IntoIterator<Item = Program>) -> Self {
for program in programs {
self.insert_program(program);
}
self
}
pub(crate) fn insert_program(&mut self, program: Program) {
self.programs.insert(program.id(), program);
}
pub fn apply_state_diff(&mut self, diff: ValidatedStateDiff) {
let StateDiff {
signer_account_ids,
public_diff,
new_commitments,
new_nullifiers,
program,
} = diff.into_state_diff();
#[expect(
clippy::iter_over_hash_type,
reason = "Iteration order doesn't matter here"
)]
for (account_id, account) in public_diff {
*self.get_account_by_id_mut(account_id) = account;
}
for account_id in signer_account_ids {
self.get_account_by_id_mut(account_id)
.nonce
.public_account_nonce_increment();
}
self.private_state.0.extend(&new_commitments);
self.private_state.1.extend(&new_nullifiers);
if let Some(program) = program {
self.insert_program(program);
}
}
pub fn transition_from_public_transaction(
&mut self,
tx: &PublicTransaction,
block_id: BlockId,
timestamp: Timestamp,
) -> Result<(), LeeError> {
let diff = ValidatedStateDiff::from_public_transaction(tx, self, block_id, timestamp)?;
self.apply_state_diff(diff);
Ok(())
}
pub fn transition_from_privacy_preserving_transaction(
&mut self,
tx: &PrivacyPreservingTransaction,
block_id: BlockId,
timestamp: Timestamp,
) -> Result<(), LeeError> {
let diff =
ValidatedStateDiff::from_privacy_preserving_transaction(tx, self, block_id, timestamp)?;
self.apply_state_diff(diff);
Ok(())
}
pub fn transition_from_program_deployment_transaction(
&mut self,
tx: &ProgramDeploymentTransaction,
) -> Result<(), LeeError> {
let diff = ValidatedStateDiff::from_program_deployment_transaction(tx, self)?;
self.apply_state_diff(diff);
Ok(())
}
fn get_account_by_id_mut(&mut self, account_id: AccountId) -> &mut Account {
self.public_state.entry(account_id).or_default()
}
#[must_use]
pub fn get_account_by_id(&self, account_id: AccountId) -> Account {
self.public_state
.get(&account_id)
.cloned()
.unwrap_or_else(Account::default)
}
#[must_use]
pub fn get_proof_for_commitment(&self, commitment: &Commitment) -> Option<MembershipProof> {
self.private_state.0.get_proof_for(commitment)
}
pub(crate) const fn programs(&self) -> &HashMap<ProgramId, Program> {
&self.programs
}
#[must_use]
pub fn commitment_set_digest(&self) -> CommitmentSetDigest {
self.private_state.0.digest()
}
pub(crate) fn check_commitments_are_new(
&self,
new_commitments: &[Commitment],
) -> Result<(), LeeError> {
for commitment in new_commitments {
if self.private_state.0.contains(commitment) {
return Err(LeeError::InvalidInput("Commitment already seen".to_owned()));
}
}
Ok(())
}
pub(crate) fn check_nullifiers_are_valid(
&self,
new_nullifiers: &[(Nullifier, CommitmentSetDigest)],
) -> Result<(), LeeError> {
for (nullifier, digest) in new_nullifiers {
if self.private_state.1.contains(nullifier) {
return Err(LeeError::InvalidInput("Nullifier already seen".to_owned()));
}
if !self.private_state.0.root_history.contains(digest) {
return Err(LeeError::InvalidInput(
"Unrecognized commitment set digest".to_owned(),
));
}
}
Ok(())
}
}
#[cfg(any(test, feature = "test-utils"))]
impl V03State {
pub fn force_insert_account(&mut self, account_id: AccountId, account: Account) {
self.public_state.insert(account_id, account);
}
}
#[cfg(test)]
pub mod tests;

149
lee/state_machine/src/state/tests/authenticated_transfer.rs Normal file
View File

@ -0,0 +1,149 @@
use super::*;
#[test]
fn transition_from_authenticated_transfer_program_invocation_default_account_destination() {
let key = PrivateKey::try_new([1; 32]).unwrap();
let account_id = AccountId::from(&PublicKey::new_from_private_key(&key));
let initial_data = [(
account_id,
Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: 100,
..Account::default()
},
)];
let mut state = V03State::new()
.with_public_accounts(initial_data)
.with_test_programs();
let from = account_id;
let to_key = PrivateKey::try_new([2; 32]).unwrap();
let to = AccountId::from(&PublicKey::new_from_private_key(&to_key));
assert_eq!(state.get_account_by_id(to), Account::default());
let balance_to_move = 5;
let tx = transfer_transaction(from, &key, 0, to, &to_key, 0, balance_to_move);
state.transition_from_public_transaction(&tx, 1, 0).unwrap();
assert_eq!(state.get_account_by_id(from).balance, 95);
assert_eq!(state.get_account_by_id(to).balance, 5);
assert_eq!(state.get_account_by_id(from).nonce, Nonce(1));
assert_eq!(state.get_account_by_id(to).nonce, Nonce(1));
}
#[test]
fn transition_from_authenticated_transfer_program_invocation_insuficient_balance() {
let key = PrivateKey::try_new([1; 32]).unwrap();
let account_id = AccountId::from(&PublicKey::new_from_private_key(&key));
let mut state = V03State::new()
.with_public_account_balances([(account_id, 100)])
.with_test_programs();
let from = account_id;
let from_key = key;
let to_key = PrivateKey::try_new([2; 32]).unwrap();
let to = AccountId::from(&PublicKey::new_from_private_key(&to_key));
let balance_to_move = 101;
assert!(state.get_account_by_id(from).balance < balance_to_move);
let tx = transfer_transaction(from, &from_key, 0, to, &to_key, 0, balance_to_move);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(matches!(result, Err(LeeError::ProgramExecutionFailed(_))));
assert_eq!(state.get_account_by_id(from).balance, 100);
assert_eq!(state.get_account_by_id(to).balance, 0);
assert_eq!(state.get_account_by_id(from).nonce, Nonce(0));
assert_eq!(state.get_account_by_id(to).nonce, Nonce(0));
}
#[test]
fn transition_from_authenticated_transfer_program_invocation_non_default_account_destination() {
let key1 = PrivateKey::try_new([1; 32]).unwrap();
let key2 = PrivateKey::try_new([2; 32]).unwrap();
let account_id1 = AccountId::from(&PublicKey::new_from_private_key(&key1));
let account_id2 = AccountId::from(&PublicKey::new_from_private_key(&key2));
let initial_data = [
(
account_id1,
Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: 100,
..Account::default()
},
),
(
account_id2,
Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: 200,
..Account::default()
},
),
];
let mut state = V03State::new()
.with_public_accounts(initial_data)
.with_test_programs();
let from = account_id2;
let from_key = key2;
let to = account_id1;
let to_key = key1;
assert_ne!(state.get_account_by_id(to), Account::default());
let balance_to_move = 8;
let tx = transfer_transaction(from, &from_key, 0, to, &to_key, 0, balance_to_move);
state.transition_from_public_transaction(&tx, 1, 0).unwrap();
assert_eq!(state.get_account_by_id(from).balance, 192);
assert_eq!(state.get_account_by_id(to).balance, 108);
assert_eq!(state.get_account_by_id(from).nonce, Nonce(1));
assert_eq!(state.get_account_by_id(to).nonce, Nonce(1));
}
#[test]
fn transition_from_sequence_of_authenticated_transfer_program_invocations() {
let key1 = PrivateKey::try_new([8; 32]).unwrap();
let account_id1 = AccountId::from(&PublicKey::new_from_private_key(&key1));
let key2 = PrivateKey::try_new([2; 32]).unwrap();
let account_id2 = AccountId::from(&PublicKey::new_from_private_key(&key2));
let initial_data = [(
account_id1,
Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: 100,
..Account::default()
},
)];
let mut state = V03State::new()
.with_public_accounts(initial_data)
.with_test_programs();
let key3 = PrivateKey::try_new([3; 32]).unwrap();
let account_id3 = AccountId::from(&PublicKey::new_from_private_key(&key3));
let balance_to_move = 5;
let tx = transfer_transaction(
account_id1,
&key1,
0,
account_id2,
&key2,
0,
balance_to_move,
);
state.transition_from_public_transaction(&tx, 1, 0).unwrap();
let balance_to_move = 3;
let tx = transfer_transaction(
account_id2,
&key2,
1,
account_id3,
&key3,
0,
balance_to_move,
);
state.transition_from_public_transaction(&tx, 1, 0).unwrap();
assert_eq!(state.get_account_by_id(account_id1).balance, 95);
assert_eq!(state.get_account_by_id(account_id2).balance, 2);
assert_eq!(state.get_account_by_id(account_id3).balance, 3);
assert_eq!(state.get_account_by_id(account_id1).nonce, Nonce(1));
assert_eq!(state.get_account_by_id(account_id2).nonce, Nonce(2));
assert_eq!(state.get_account_by_id(account_id3).nonce, Nonce(1));
}

118
lee/state_machine/src/state/tests/changer_claimer.rs Normal file
View File

@ -0,0 +1,118 @@
use super::*;
#[test]
fn public_changer_claimer_no_data_change_no_claim_succeeds() {
let initial_data = [];
let mut state = V03State::new()
.with_public_accounts(public_state_from_balances(&initial_data))
.with_test_programs();
let account_id = AccountId::new([1; 32]);
let program_id = crate::test_methods::changer_claimer().id();
// Don't change data (None) and don't claim (false)
let instruction: (Option<Vec<u8>>, bool) = (None, false);
let message =
public_transaction::Message::try_new(program_id, vec![account_id], vec![], instruction)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
// Should succeed - no changes made, no claim needed
assert!(result.is_ok());
// Account should remain default/unclaimed
assert_eq!(state.get_account_by_id(account_id), Account::default());
}
#[test]
fn public_changer_claimer_data_change_no_claim_fails() {
let initial_data = [];
let mut state = V03State::new()
.with_public_accounts(public_state_from_balances(&initial_data))
.with_test_programs();
let account_id = AccountId::new([1; 32]);
let program_id = crate::test_methods::changer_claimer().id();
// Change data but don't claim (false) - should fail
let new_data = vec![1, 2, 3, 4, 5];
let instruction: (Option<Vec<u8>>, bool) = (Some(new_data), false);
let message =
public_transaction::Message::try_new(program_id, vec![account_id], vec![], instruction)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
// Should fail - cannot modify data without claiming the account
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(
InvalidProgramBehaviorError::DefaultAccountModifiedWithoutClaim {
account_id: err_account_id
}
)) if err_account_id == account_id
));
}
#[test]
fn private_changer_claimer_no_data_change_no_claim_succeeds() {
let program = crate::test_methods::changer_claimer();
let sender_keys = test_private_account_keys_1();
let private_account =
AccountWithMetadata::new(Account::default(), true, (&sender_keys.npk(), 0));
// Don't change data (None) and don't claim (false)
let instruction: (Option<Vec<u8>>, bool) = (None, false);
let result = execute_and_prove(
vec![private_account],
Program::serialize_instruction(instruction).unwrap(),
vec![InputAccountIdentity::PrivateAuthorizedUpdate {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(
&sender_keys.npk(),
&sender_keys.vpk(),
),
ssk: SharedSecretKey::encapsulate_deterministic(&sender_keys.vpk(), &[0_u8; 32], 0).0,
nsk: sender_keys.nsk,
membership_proof: (0, vec![]),
identifier: 0,
}],
&program.into(),
);
// Should succeed - no changes made, no claim needed
assert!(result.is_ok());
}
#[test]
fn private_changer_claimer_data_change_no_claim_fails() {
let program = crate::test_methods::changer_claimer();
let sender_keys = test_private_account_keys_1();
let private_account =
AccountWithMetadata::new(Account::default(), true, (&sender_keys.npk(), 0));
// Change data but don't claim (false) - should fail
let new_data = vec![1, 2, 3, 4, 5];
let instruction: (Option<Vec<u8>>, bool) = (Some(new_data), false);
let result = execute_and_prove(
vec![private_account],
Program::serialize_instruction(instruction).unwrap(),
vec![InputAccountIdentity::PrivateAuthorizedUpdate {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(
&sender_keys.npk(),
&sender_keys.vpk(),
),
ssk: SharedSecretKey::encapsulate_deterministic(&sender_keys.vpk(), &[0_u8; 32], 0).0,
nsk: sender_keys.nsk,
membership_proof: (0, vec![]),
identifier: 0,
}],
&program.into(),
);
// Should fail - cannot modify data without claiming the account
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}

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lee/state_machine/src/state/tests/circuit.rs Normal file
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use super::*;
#[test]
fn claiming_mechanism() {
let program = crate::test_methods::simple_balance_transfer();
let from_key = PrivateKey::try_new([1; 32]).unwrap();
let from = AccountId::from(&PublicKey::new_from_private_key(&from_key));
let initial_balance = 100;
let initial_data = [(from, initial_balance)];
let mut state = V03State::new()
.with_public_accounts(public_state_from_balances(&initial_data))
.with_test_programs();
let to_key = PrivateKey::try_new([2; 32]).unwrap();
let to = AccountId::from(&PublicKey::new_from_private_key(&to_key));
let amount: u128 = 37;
// Check the recipient is an uninitialized account
assert_eq!(state.get_account_by_id(to), Account::default());
let expected_recipient_post = Account {
program_owner: program.id(),
balance: amount,
nonce: Nonce(1),
..Account::default()
};
let message = public_transaction::Message::try_new(
program.id(),
vec![from, to],
vec![Nonce(0), Nonce(0)],
amount,
)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[&from_key, &to_key]);
let tx = PublicTransaction::new(message, witness_set);
state.transition_from_public_transaction(&tx, 1, 0).unwrap();
let recipient_post = state.get_account_by_id(to);
assert_eq!(recipient_post, expected_recipient_post);
}
#[test]
fn unauthorized_public_account_claiming_fails() {
let program = crate::test_methods::simple_balance_transfer();
let account_key = PrivateKey::try_new([9; 32]).unwrap();
let account_id = AccountId::from(&PublicKey::new_from_private_key(&account_key));
let mut state = V03State::new().with_test_programs();
assert_eq!(state.get_account_by_id(account_id), Account::default());
let message =
public_transaction::Message::try_new(program.id(), vec![account_id], vec![], 0_u128)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 2, 0);
assert!(matches!(result, Err(LeeError::InvalidProgramBehavior(_))));
assert_eq!(state.get_account_by_id(account_id), Account::default());
}
#[test]
fn authorized_public_account_claiming_succeeds() {
let program = crate::test_methods::simple_balance_transfer();
let account_key = PrivateKey::try_new([10; 32]).unwrap();
let account_id = AccountId::from(&PublicKey::new_from_private_key(&account_key));
let mut state = V03State::new().with_test_programs();
assert_eq!(state.get_account_by_id(account_id), Account::default());
let message = public_transaction::Message::try_new(
program.id(),
vec![account_id],
vec![Nonce(0)],
0_u128,
)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[&account_key]);
let tx = PublicTransaction::new(message, witness_set);
state.transition_from_public_transaction(&tx, 1, 0).unwrap();
assert_eq!(
state.get_account_by_id(account_id),
Account {
program_owner: program.id(),
nonce: Nonce(1),
..Account::default()
}
);
}
#[test]
fn public_chained_call() {
let program = crate::test_methods::chain_caller();
let key = PrivateKey::try_new([1; 32]).unwrap();
let from = AccountId::from(&PublicKey::new_from_private_key(&key));
let to = AccountId::new([2; 32]);
let initial_balance = 1000;
let initial_data = [(from, initial_balance), (to, 0)];
let mut state = V03State::new()
.with_public_accounts(public_state_from_balances(&initial_data))
.with_test_programs();
let from_key = key;
let amount: u128 = 37;
let instruction: (u128, ProgramId, u32, Option<PdaSeed>) = (
amount,
crate::test_methods::simple_balance_transfer().id(),
2,
None,
);
let expected_to_post = Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: amount * 2, // The `chain_caller` chains the program twice
..Account::default()
};
let message = public_transaction::Message::try_new(
program.id(),
vec![to, from], // The chain_caller program permutes the account order in the chain
// call
vec![Nonce(0)],
instruction,
)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[&from_key]);
let tx = PublicTransaction::new(message, witness_set);
state.transition_from_public_transaction(&tx, 1, 0).unwrap();
let from_post = state.get_account_by_id(from);
let to_post = state.get_account_by_id(to);
// The `chain_caller` program calls the program twice
assert_eq!(from_post.balance, initial_balance - 2 * amount);
assert_eq!(to_post, expected_to_post);
}
#[test]
fn execution_fails_if_chained_calls_exceeds_depth() {
let program = crate::test_methods::chain_caller();
let key = PrivateKey::try_new([1; 32]).unwrap();
let from = AccountId::from(&PublicKey::new_from_private_key(&key));
let to = AccountId::new([2; 32]);
let initial_balance = 100;
let initial_data = [(from, initial_balance), (to, 0)];
let mut state = V03State::new()
.with_public_accounts(public_state_from_balances(&initial_data))
.with_test_programs();
let from_key = key;
let amount: u128 = 0;
let instruction: (u128, ProgramId, u32, Option<PdaSeed>) = (
amount,
crate::test_methods::simple_balance_transfer().id(),
u32::try_from(MAX_NUMBER_CHAINED_CALLS).expect("MAX_NUMBER_CHAINED_CALLS fits in u32") + 1,
None,
);
let message = public_transaction::Message::try_new(
program.id(),
vec![to, from], // The chain_caller program permutes the account order in the chain
// call
vec![Nonce(0)],
instruction,
)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[&from_key]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(matches!(
result,
Err(LeeError::MaxChainedCallsDepthExceeded)
));
}
#[test]
fn execution_that_requires_authentication_of_a_program_derived_account_id_succeeds() {
let chain_caller = crate::test_methods::chain_caller();
let pda_seed = PdaSeed::new([37; 32]);
let from = AccountId::for_public_pda(&chain_caller.id(), &pda_seed);
let to = AccountId::new([2; 32]);
let initial_balance = 1000;
let initial_data = [(from, initial_balance), (to, 0)];
let mut state = V03State::new()
.with_public_accounts(public_state_from_balances(&initial_data))
.with_test_programs();
let amount: u128 = 58;
let instruction: (u128, ProgramId, u32, Option<PdaSeed>) = (
amount,
crate::test_methods::simple_balance_transfer().id(),
1,
Some(pda_seed),
);
let expected_to_post = Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: amount, // The `chain_caller` chains the program twice
..Account::default()
};
let message = public_transaction::Message::try_new(
chain_caller.id(),
vec![to, from], // The chain_caller program permutes the account order in the chain
// call
vec![],
instruction,
)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
state.transition_from_public_transaction(&tx, 1, 0).unwrap();
let from_post = state.get_account_by_id(from);
let to_post = state.get_account_by_id(to);
assert_eq!(from_post.balance, initial_balance - amount);
assert_eq!(to_post, expected_to_post);
}
#[test]
fn claiming_mechanism_within_chain_call() {
// This test calls the authenticated transfer program through the chain_caller program.
// The transfer is made from an initialized sender to an uninitialized recipient. And
// it is expected that the recipient account is claimed by the authenticated transfer
// program and not the chained_caller program.
let chain_caller = crate::test_methods::chain_caller();
let simple_transfer = crate::test_methods::simple_balance_transfer();
let from_key = PrivateKey::try_new([1; 32]).unwrap();
let from = AccountId::from(&PublicKey::new_from_private_key(&from_key));
let initial_balance = 100;
let initial_data = [(from, initial_balance)];
let mut state = V03State::new()
.with_public_accounts(public_state_from_balances(&initial_data))
.with_test_programs();
let to_key = PrivateKey::try_new([2; 32]).unwrap();
let to = AccountId::from(&PublicKey::new_from_private_key(&to_key));
let amount: u128 = 37;
// Check the recipient is an uninitialized account
assert_eq!(state.get_account_by_id(to), Account::default());
let expected_to_post = Account {
// The expected program owner is the authenticated transfer program
program_owner: simple_transfer.id(),
balance: amount,
nonce: Nonce(1),
..Account::default()
};
// The transaction executes the chain_caller program, which internally calls the
// authenticated_transfer program
let instruction: (u128, ProgramId, u32, Option<PdaSeed>) = (
amount,
crate::test_methods::simple_balance_transfer().id(),
1,
None,
);
let message = public_transaction::Message::try_new(
chain_caller.id(),
vec![to, from], // The chain_caller program permutes the account order in the chain
// call
vec![Nonce(0), Nonce(0)],
instruction,
)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[&from_key, &to_key]);
let tx = PublicTransaction::new(message, witness_set);
state.transition_from_public_transaction(&tx, 1, 0).unwrap();
let from_post = state.get_account_by_id(from);
let to_post = state.get_account_by_id(to);
assert_eq!(from_post.balance, initial_balance - amount);
assert_eq!(to_post, expected_to_post);
}
#[test]
fn unauthorized_public_account_claiming_fails_when_executed_privately() {
let program = crate::test_methods::simple_balance_transfer();
let account_id = AccountId::new([11; 32]);
let public_account = AccountWithMetadata::new(Account::default(), false, account_id);
let result = execute_and_prove(
vec![public_account],
Program::serialize_instruction(0_u128).unwrap(),
vec![InputAccountIdentity::Public],
&program.into(),
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
#[test]
fn authorized_public_account_claiming_succeeds_when_executed_privately() {
let program = crate::test_methods::simple_balance_transfer();
let program_id = program.id();
let sender_keys = test_private_account_keys_1();
let sender_private_account = Account {
program_owner: program_id,
balance: 100,
..Account::default()
};
let sender_account_id = AccountId::for_regular_private_account(&sender_keys.npk(), 0);
let sender_commitment = Commitment::new(&sender_account_id, &sender_private_account);
let sender_init_nullifier = Nullifier::for_account_initialization(&sender_account_id);
let mut state =
V03State::new().with_private_accounts([(sender_commitment.clone(), sender_init_nullifier)]);
let sender_pre =
AccountWithMetadata::new(sender_private_account, true, (&sender_keys.npk(), 0));
let recipient_private_key = PrivateKey::try_new([2; 32]).unwrap();
let recipient_account_id =
AccountId::from(&PublicKey::new_from_private_key(&recipient_private_key));
let recipient_pre = AccountWithMetadata::new(Account::default(), true, recipient_account_id);
let (shared_secret, epk) =
SharedSecretKey::encapsulate_deterministic(&sender_keys.vpk(), &[0_u8; 32], 0);
let balance = 37;
let (output, proof) = execute_and_prove(
vec![sender_pre, recipient_pre],
Program::serialize_instruction(balance).unwrap(),
vec![
InputAccountIdentity::PrivateAuthorizedUpdate {
epk,
view_tag: EncryptedAccountData::compute_view_tag(
&sender_keys.npk(),
&sender_keys.vpk(),
),
ssk: shared_secret,
nsk: sender_keys.nsk,
membership_proof: state
.get_proof_for_commitment(&sender_commitment)
.expect("sender's commitment must be in state"),
identifier: 0,
},
InputAccountIdentity::Public,
],
&program.into(),
)
.unwrap();
let message =
Message::try_from_circuit_output(vec![recipient_account_id], vec![Nonce(0)], output)
.unwrap();
let witness_set = WitnessSet::for_message(&message, proof, &[&recipient_private_key]);
let tx = PrivacyPreservingTransaction::new(message, witness_set);
state
.transition_from_privacy_preserving_transaction(&tx, 1, 0)
.unwrap();
let nullifier = Nullifier::for_account_update(&sender_commitment, &sender_keys.nsk);
assert!(state.private_state.1.contains(&nullifier));
assert_eq!(
state.get_account_by_id(recipient_account_id),
Account {
program_owner: program_id,
balance,
nonce: Nonce(1),
..Account::default()
}
);
}
#[test_case::test_case(1; "single call")]
#[test_case::test_case(2; "two calls")]
fn private_chained_call(number_of_calls: u32) {
// Arrange
let chain_caller = crate::test_methods::chain_caller();
let simple_transfers = crate::test_methods::simple_balance_transfer();
let from_keys = test_private_account_keys_1();
let to_keys = test_private_account_keys_2();
let initial_balance = 100;
let from_account = AccountWithMetadata::new(
Account {
program_owner: simple_transfers.id(),
balance: initial_balance,
..Account::default()
},
true,
(&from_keys.npk(), 0),
);
let to_account = AccountWithMetadata::new(
Account {
program_owner: simple_transfers.id(),
..Account::default()
},
true,
(&to_keys.npk(), 0),
);
let from_account_id = AccountId::for_regular_private_account(&from_keys.npk(), 0);
let to_account_id = AccountId::for_regular_private_account(&to_keys.npk(), 0);
let from_commitment = Commitment::new(&from_account_id, &from_account.account);
let to_commitment = Commitment::new(&to_account_id, &to_account.account);
let from_init_nullifier = Nullifier::for_account_initialization(&from_account_id);
let to_init_nullifier = Nullifier::for_account_initialization(&to_account_id);
let mut state = V03State::new()
.with_private_accounts([
(from_commitment.clone(), from_init_nullifier),
(to_commitment.clone(), to_init_nullifier),
])
.with_test_programs();
let amount: u128 = 37;
let instruction: (u128, ProgramId, u32, Option<PdaSeed>) = (
amount,
crate::test_methods::simple_balance_transfer().id(),
number_of_calls,
None,
);
let (from_ss, from_epk) =
SharedSecretKey::encapsulate_deterministic(&from_keys.vpk(), &[0_u8; 32], 0);
let (to_ss, to_epk) =
SharedSecretKey::encapsulate_deterministic(&to_keys.vpk(), &[0_u8; 32], 1);
let mut dependencies = HashMap::new();
dependencies.insert(simple_transfers.id(), simple_transfers);
let program_with_deps = ProgramWithDependencies::new(chain_caller, dependencies);
let from_new_nonce = Nonce::default().private_account_nonce_increment(&from_keys.nsk);
let to_new_nonce = Nonce::default().private_account_nonce_increment(&to_keys.nsk);
let from_expected_post = Account {
balance: initial_balance - u128::from(number_of_calls) * amount,
nonce: from_new_nonce,
..from_account.account.clone()
};
let from_expected_commitment = Commitment::new(&from_account_id, &from_expected_post);
let to_expected_post = Account {
balance: u128::from(number_of_calls) * amount,
nonce: to_new_nonce,
..to_account.account.clone()
};
let to_expected_commitment = Commitment::new(&to_account_id, &to_expected_post);
// Act
let (output, proof) = execute_and_prove(
vec![to_account, from_account],
Program::serialize_instruction(instruction).unwrap(),
vec![
InputAccountIdentity::PrivateAuthorizedUpdate {
epk: to_epk,
view_tag: EncryptedAccountData::compute_view_tag(&to_keys.npk(), &to_keys.vpk()),
ssk: to_ss,
nsk: from_keys.nsk,
membership_proof: state
.get_proof_for_commitment(&from_commitment)
.expect("from's commitment must be in state"),
identifier: 0,
},
InputAccountIdentity::PrivateAuthorizedUpdate {
epk: from_epk,
view_tag: EncryptedAccountData::compute_view_tag(
&from_keys.npk(),
&from_keys.vpk(),
),
ssk: from_ss,
nsk: to_keys.nsk,
membership_proof: state
.get_proof_for_commitment(&to_commitment)
.expect("to's commitment must be in state"),
identifier: 0,
},
],
&program_with_deps,
)
.unwrap();
let message = Message::try_from_circuit_output(vec![], vec![], output).unwrap();
let witness_set = WitnessSet::for_message(&message, proof, &[]);
let transaction = PrivacyPreservingTransaction::new(message, witness_set);
state
.transition_from_privacy_preserving_transaction(&transaction, 1, 0)
.unwrap();
// Assert
assert!(
state
.get_proof_for_commitment(&from_expected_commitment)
.is_some()
);
assert!(
state
.get_proof_for_commitment(&to_expected_commitment)
.is_some()
);
}
#[test]
fn claiming_mechanism_cannot_claim_initialied_accounts() {
let claimer = crate::test_methods::claimer();
let mut state = V03State::new().with_test_programs();
let account_id = AccountId::new([2; 32]);
// Insert an account with non-default program owner
state.force_insert_account(
account_id,
Account {
program_owner: [1, 2, 3, 4, 5, 6, 7, 8],
..Account::default()
},
);
let message =
public_transaction::Message::try_new(claimer.id(), vec![account_id], vec![], ()).unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(
InvalidProgramBehaviorError::ClaimedNonDefaultAccount { account_id: err_account_id }
)) if err_account_id == account_id
));
}
/// This test ensures that even if a malicious program tries to perform overflow of balances
/// it will not be able to break the balance validation.
#[test]
fn malicious_program_cannot_break_balance_validation_if_not_in_genesis() {
let sender_key = PrivateKey::try_new([37; 32]).unwrap();
let sender_id = AccountId::from(&PublicKey::new_from_private_key(&sender_key));
let sender_init_balance: u128 = 10;
let recipient_key = PrivateKey::try_new([42; 32]).unwrap();
let recipient_id = AccountId::from(&PublicKey::new_from_private_key(&recipient_key));
let recipient_init_balance: u128 = 10;
let modified_transfer_id = crate::test_methods::modified_transfer_program().id();
let mut state = V03State::new()
.with_public_accounts([
(
sender_id,
Account {
program_owner: modified_transfer_id,
balance: sender_init_balance,
..Account::default()
},
),
(
recipient_id,
Account {
program_owner: modified_transfer_id,
balance: recipient_init_balance,
..Account::default()
},
),
])
.with_test_programs();
let balance_to_move: u128 = 4;
let sender = AccountWithMetadata::new(state.get_account_by_id(sender_id), true, sender_id);
let sender_nonce = sender.account.nonce;
let _recipient =
AccountWithMetadata::new(state.get_account_by_id(recipient_id), false, sender_id);
let message = public_transaction::Message::try_new(
modified_transfer_id,
vec![sender_id, recipient_id],
vec![sender_nonce],
balance_to_move,
)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[&sender_key]);
let tx = PublicTransaction::new(message, witness_set);
let res = state.transition_from_public_transaction(&tx, 2, 0);
let expected_total_balance_pre_states =
WrappedBalanceSum::from_balances([sender_init_balance, recipient_init_balance].into_iter())
.unwrap();
let expected_total_balance_post_states = WrappedBalanceSum::from_balances(
[sender_init_balance, recipient_init_balance, u128::MAX, 1].into_iter(),
)
.unwrap();
assert!(matches!(
res,
Err(LeeError::InvalidProgramBehavior(
InvalidProgramBehaviorError::ExecutionValidationFailed(
ExecutionValidationError::MismatchedTotalBalance { total_balance_pre_states, total_balance_post_states }
)
)) if total_balance_pre_states == expected_total_balance_pre_states && total_balance_post_states == expected_total_balance_post_states
));
let sender_post = state.get_account_by_id(sender_id);
let recipient_post = state.get_account_by_id(recipient_id);
let expected_sender_post = {
let mut this = state.get_account_by_id(sender_id);
this.balance = sender_init_balance;
this.nonce = Nonce(0);
this
};
let expected_recipient_post = {
let mut this = state.get_account_by_id(sender_id);
this.balance = recipient_init_balance;
this.nonce = Nonce(0);
this
};
assert_eq!(expected_sender_post, sender_post);
assert_eq!(expected_recipient_post, recipient_post);
}

235
lee/state_machine/src/state/tests/flash_swap.rs Normal file
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@ -0,0 +1,235 @@
use super::*;
#[test]
fn flash_swap_successful() {
let initiator = crate::test_methods::flash_swap_initiator();
let callback = crate::test_methods::flash_swap_callback();
let token = crate::test_methods::simple_balance_transfer();
let vault_id = AccountId::for_public_pda(&initiator.id(), &PdaSeed::new([0_u8; 32]));
let receiver_id = AccountId::for_public_pda(&callback.id(), &PdaSeed::new([1_u8; 32]));
let initial_balance: u128 = 1000;
let amount_out: u128 = 100;
let vault_account = Account {
program_owner: token.id(),
balance: initial_balance,
..Account::default()
};
let receiver_account = Account {
program_owner: token.id(),
balance: 0,
..Account::default()
};
let mut state = V03State::new().with_test_programs();
state.force_insert_account(vault_id, vault_account);
state.force_insert_account(receiver_id, receiver_account);
// Callback instruction: return funds
let cb_instruction = CallbackInstruction {
return_funds: true,
token_program_id: token.id(),
amount: amount_out,
};
let cb_data = Program::serialize_instruction(cb_instruction).unwrap();
let instruction = FlashSwapInstruction::Initiate {
token_program_id: token.id(),
callback_program_id: callback.id(),
amount_out,
callback_instruction_data: cb_data,
};
let tx = build_flash_swap_tx(&initiator, vault_id, receiver_id, instruction);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(result.is_ok(), "flash swap should succeed: {result:?}");
// Vault balance restored, receiver back to 0
assert_eq!(state.get_account_by_id(vault_id).balance, initial_balance);
assert_eq!(state.get_account_by_id(receiver_id).balance, 0);
}
#[test]
fn flash_swap_callback_keeps_funds_rollback() {
let initiator = crate::test_methods::flash_swap_initiator();
let callback = crate::test_methods::flash_swap_callback();
let token = crate::test_methods::simple_balance_transfer();
let vault_id = AccountId::for_public_pda(&initiator.id(), &PdaSeed::new([0_u8; 32]));
let receiver_id = AccountId::for_public_pda(&callback.id(), &PdaSeed::new([1_u8; 32]));
let initial_balance: u128 = 1000;
let amount_out: u128 = 100;
let vault_account = Account {
program_owner: token.id(),
balance: initial_balance,
..Account::default()
};
let receiver_account = Account {
program_owner: token.id(),
balance: 0,
..Account::default()
};
let mut state = V03State::new().with_test_programs();
state.force_insert_account(vault_id, vault_account);
state.force_insert_account(receiver_id, receiver_account);
// Callback instruction: do NOT return funds
let cb_instruction = CallbackInstruction {
return_funds: false,
token_program_id: token.id(),
amount: amount_out,
};
let cb_data = Program::serialize_instruction(cb_instruction).unwrap();
let instruction = FlashSwapInstruction::Initiate {
token_program_id: token.id(),
callback_program_id: callback.id(),
amount_out,
callback_instruction_data: cb_data,
};
let tx = build_flash_swap_tx(&initiator, vault_id, receiver_id, instruction);
let result = state.transition_from_public_transaction(&tx, 1, 0);
// Invariant check fails → entire tx rolls back
assert!(
result.is_err(),
"flash swap should fail when callback keeps funds"
);
// State unchanged (rollback)
assert_eq!(state.get_account_by_id(vault_id).balance, initial_balance);
assert_eq!(state.get_account_by_id(receiver_id).balance, 0);
}
#[test]
fn flash_swap_self_call_targets_correct_program() {
// Zero-amount flash swap: the invariant self-call still runs and succeeds
// because vault balance doesn't decrease.
let initiator = crate::test_methods::flash_swap_initiator();
let callback = crate::test_methods::flash_swap_callback();
let token = crate::test_methods::simple_balance_transfer();
let vault_id = AccountId::for_public_pda(&initiator.id(), &PdaSeed::new([0_u8; 32]));
let receiver_id = AccountId::for_public_pda(&callback.id(), &PdaSeed::new([1_u8; 32]));
let initial_balance: u128 = 1000;
let vault_account = Account {
program_owner: token.id(),
balance: initial_balance,
..Account::default()
};
let receiver_account = Account {
program_owner: token.id(),
balance: 0,
..Account::default()
};
let mut state = V03State::new().with_test_programs();
state.force_insert_account(vault_id, vault_account);
state.force_insert_account(receiver_id, receiver_account);
let cb_instruction = CallbackInstruction {
return_funds: true,
token_program_id: token.id(),
amount: 0,
};
let cb_data = Program::serialize_instruction(cb_instruction).unwrap();
let instruction = FlashSwapInstruction::Initiate {
token_program_id: token.id(),
callback_program_id: callback.id(),
amount_out: 0,
callback_instruction_data: cb_data,
};
let tx = build_flash_swap_tx(&initiator, vault_id, receiver_id, instruction);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(
result.is_ok(),
"zero-amount flash swap should succeed: {result:?}"
);
}
#[test]
fn flash_swap_standalone_invariant_check_rejected() {
// Calling InvariantCheck directly (not as a chained self-call) should fail
// because caller_program_id will be None.
let initiator = crate::test_methods::flash_swap_initiator();
let token = crate::test_methods::simple_balance_transfer();
let vault_id = AccountId::for_public_pda(&initiator.id(), &PdaSeed::new([0_u8; 32]));
let vault_account = Account {
program_owner: token.id(),
balance: 1000,
..Account::default()
};
let mut state = V03State::new().with_test_programs();
state.force_insert_account(vault_id, vault_account);
let instruction = FlashSwapInstruction::InvariantCheck {
min_vault_balance: 1000,
};
let message =
public_transaction::Message::try_new(initiator.id(), vec![vault_id], vec![], instruction)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(
result.is_err(),
"standalone InvariantCheck should be rejected (caller_program_id is None)"
);
}
#[test]
fn malicious_self_program_id_rejected_in_public_execution() {
let program = crate::test_methods::malicious_self_program_id();
let acc_id = AccountId::new([99; 32]);
let account = Account::default();
let mut state = V03State::new().with_test_programs();
state.force_insert_account(acc_id, account);
let message =
public_transaction::Message::try_new(program.id(), vec![acc_id], vec![], ()).unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(
result.is_err(),
"program with wrong self_program_id in output should be rejected"
);
}
#[test]
fn malicious_caller_program_id_rejected_in_public_execution() {
let program = crate::test_methods::malicious_caller_program_id();
let acc_id = AccountId::new([99; 32]);
let account = Account::default();
let mut state = V03State::new().with_test_programs();
state.force_insert_account(acc_id, account);
let message =
public_transaction::Message::try_new(program.id(), vec![acc_id], vec![], ()).unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(
result.is_err(),
"program with spoofed caller_program_id in output should be rejected"
);
}

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use super::*;
#[test]
fn new_works() {
let key1 = PrivateKey::try_new([1; 32]).unwrap();
let key2 = PrivateKey::try_new([2; 32]).unwrap();
let addr1 = AccountId::from(&PublicKey::new_from_private_key(&key1));
let addr2 = AccountId::from(&PublicKey::new_from_private_key(&key2));
let expected_public_state = {
let mut this = HashMap::new();
this.insert(
addr1,
Account {
balance: 100,
..Account::default()
},
);
this.insert(
addr2,
Account {
balance: 151,
..Account::default()
},
);
this
};
let expected_builtin_programs = HashMap::new();
let state =
V03State::new().with_public_account_balances([(addr1, 100_u128), (addr2, 151_u128)]);
assert_eq!(state.public_state, expected_public_state);
assert_eq!(state.programs, expected_builtin_programs);
}
#[test]
fn new_includes_nullifiers_for_private_accounts() {
let keys1 = test_private_account_keys_1();
let keys2 = test_private_account_keys_2();
let account = Account {
balance: 100,
..Account::default()
};
let account_id1 = AccountId::for_regular_private_account(&keys1.npk(), 0);
let account_id2 = AccountId::for_regular_private_account(&keys2.npk(), 0);
let init_commitment1 = Commitment::new(&account_id1, &account);
let init_commitment2 = Commitment::new(&account_id2, &account);
let init_nullifier1 = Nullifier::for_account_initialization(&account_id1);
let init_nullifier2 = Nullifier::for_account_initialization(&account_id2);
let initial_private_accounts = vec![
(init_commitment1, init_nullifier1),
(init_commitment2, init_nullifier2),
];
let state = V03State::new().with_private_accounts(initial_private_accounts);
assert!(state.private_state.1.contains(&init_nullifier1));
assert!(state.private_state.1.contains(&init_nullifier2));
}
#[test]
fn insert_program() {
let mut state = V03State::new();
let program_to_insert = crate::test_methods::simple_balance_transfer();
let program_id = program_to_insert.id();
assert!(!state.programs.contains_key(&program_id));
state.insert_program(program_to_insert);
assert!(state.programs.contains_key(&program_id));
}
#[test]
fn get_account_by_account_id_non_default_account() {
let key = PrivateKey::try_new([1; 32]).unwrap();
let account_id = AccountId::from(&PublicKey::new_from_private_key(&key));
let initial_data = [(
account_id,
Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: 100,
..Account::default()
},
)];
let state = V03State::new().with_public_accounts(initial_data);
let expected_account = &state.public_state[&account_id];
let account = state.get_account_by_id(account_id);
assert_eq!(&account, expected_account);
}
#[test]
fn get_account_by_account_id_default_account() {
let addr2 = AccountId::new([0; 32]);
let state = V03State::new();
let expected_account = Account::default();
let account = state.get_account_by_id(addr2);
assert_eq!(account, expected_account);
}
#[test]
fn builtin_programs_getter() {
let state = V03State::new();
let builtin_programs = state.programs();
assert_eq!(builtin_programs, &state.programs);
}
#[test]
fn state_serialization_roundtrip() {
let account_id_1 = AccountId::new([1; 32]);
let account_id_2 = AccountId::new([2; 32]);
let initial_data = [(account_id_1, 100_u128), (account_id_2, 151_u128)];
let state = V03State::new()
.with_public_accounts(public_state_from_balances(&initial_data))
.with_test_programs();
let bytes = borsh::to_vec(&state).unwrap();
let state_from_bytes: V03State = borsh::from_slice(&bytes).unwrap();
assert_eq!(state, state_from_bytes);
}

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#![expect(
clippy::arithmetic_side_effects,
clippy::shadow_unrelated,
reason = "We don't care about it in tests"
)]
use std::collections::HashMap;
use lee_core::{
BlockId, Commitment, DUMMY_COMMITMENT_HASH, EncryptedAccountData, InputAccountIdentity,
Nullifier, NullifierPublicKey, NullifierSecretKey, SharedSecretKey, Timestamp,
account::{Account, AccountId, AccountWithMetadata, Nonce, data::Data},
encryption::{EphemeralPublicKey, ML_KEM_768_CIPHERTEXT_LEN, ViewingPublicKey},
program::{
BlockValidityWindow, ExecutionValidationError, MAX_NUMBER_CHAINED_CALLS, PdaSeed,
ProgramId, TimestampValidityWindow, WrappedBalanceSum,
},
};
use crate::{
PublicKey, PublicTransaction, V03State,
error::{InvalidProgramBehaviorError, LeeError},
execute_and_prove,
privacy_preserving_transaction::{
PrivacyPreservingTransaction, circuit::ProgramWithDependencies, message::Message,
witness_set::WitnessSet,
},
program::Program,
public_transaction,
signature::PrivateKey,
};
mod authenticated_transfer;
mod changer_claimer;
mod circuit;
mod claiming;
mod flash_swap;
mod genesis;
mod privacy_preserving;
mod public_program_rules;
mod validity_window;
impl V03State {
/// Include test programs in the builtin programs map.
#[must_use]
pub fn with_test_programs(mut self) -> Self {
self.insert_program(crate::test_methods::simple_balance_transfer());
self.insert_program(crate::test_methods::nonce_changer());
self.insert_program(crate::test_methods::extra_output());
self.insert_program(crate::test_methods::missing_output());
self.insert_program(crate::test_methods::program_owner_changer());
self.insert_program(crate::test_methods::data_changer());
self.insert_program(crate::test_methods::minter());
self.insert_program(crate::test_methods::burner());
self.insert_program(crate::test_methods::auth_asserting_noop());
self.insert_program(crate::test_methods::private_pda_delegator());
self.insert_program(crate::test_methods::pda_claimer());
self.insert_program(crate::test_methods::two_pda_claimer());
self.insert_program(crate::test_methods::noop());
self.insert_program(crate::test_methods::chain_caller());
self.insert_program(crate::test_methods::modified_transfer_program());
self.insert_program(crate::test_methods::malicious_authorization_changer());
self.insert_program(crate::test_methods::validity_window());
self.insert_program(crate::test_methods::flash_swap_initiator());
self.insert_program(crate::test_methods::flash_swap_callback());
self.insert_program(crate::test_methods::malicious_self_program_id());
self.insert_program(crate::test_methods::malicious_caller_program_id());
self.insert_program(crate::test_methods::pda_spend_proxy());
self.insert_program(crate::test_methods::claimer());
self.insert_program(crate::test_methods::changer_claimer());
self.insert_program(crate::test_methods::validity_window_chain_caller());
self.insert_program(crate::test_methods::simple_transfer_proxy());
self.insert_program(crate::test_methods::malicious_injector());
self.insert_program(crate::test_methods::malicious_launderer());
self.insert_program(crate::test_methods::modified_transfer_program());
self
}
#[must_use]
pub fn with_non_default_accounts_but_default_program_owners(mut self) -> Self {
let account_with_default_values_except_balance = Account {
balance: 100,
..Account::default()
};
let account_with_default_values_except_nonce = Account {
nonce: Nonce(37),
..Account::default()
};
let account_with_default_values_except_data = Account {
data: vec![0xca, 0xfe].try_into().unwrap(),
..Account::default()
};
self.force_insert_account(
AccountId::new([255; 32]),
account_with_default_values_except_balance,
);
self.force_insert_account(
AccountId::new([254; 32]),
account_with_default_values_except_nonce,
);
self.force_insert_account(
AccountId::new([253; 32]),
account_with_default_values_except_data,
);
self
}
#[must_use]
pub fn with_account_owned_by_burner_program(mut self) -> Self {
let account = Account {
program_owner: crate::test_methods::burner().id(),
balance: 100,
..Default::default()
};
self.force_insert_account(AccountId::new([252; 32]), account);
self
}
#[must_use]
pub fn with_private_account(mut self, keys: &TestPrivateKeys, account: &Account) -> Self {
let account_id = AccountId::for_regular_private_account(&keys.npk(), 0);
let commitment = Commitment::new(&account_id, account);
self.private_state.0.extend(&[commitment]);
self
}
}
pub struct TestPublicKeys {
pub signing_key: PrivateKey,
}
impl TestPublicKeys {
pub fn account_id(&self) -> AccountId {
AccountId::from(&PublicKey::new_from_private_key(&self.signing_key))
}
}
pub struct TestPrivateKeys {
pub nsk: NullifierSecretKey,
pub d: [u8; 32],
pub z: [u8; 32],
}
impl TestPrivateKeys {
pub fn npk(&self) -> NullifierPublicKey {
NullifierPublicKey::from(&self.nsk)
}
pub fn vpk(&self) -> ViewingPublicKey {
ViewingPublicKey::from_seed(&self.d, &self.z)
}
}
// ── Flash Swap types (mirrors of guest types for host-side serialisation) ──
#[derive(serde::Serialize, serde::Deserialize)]
struct CallbackInstruction {
return_funds: bool,
token_program_id: ProgramId,
amount: u128,
}
#[derive(serde::Serialize, serde::Deserialize)]
enum FlashSwapInstruction {
Initiate {
token_program_id: ProgramId,
callback_program_id: ProgramId,
amount_out: u128,
callback_instruction_data: Vec<u32>,
},
InvariantCheck {
min_vault_balance: u128,
},
}
fn public_state_from_balances(initial_data: &[(AccountId, u128)]) -> HashMap<AccountId, Account> {
initial_data
.iter()
.copied()
.map(|(account_id, balance)| {
(
account_id,
Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance,
..Account::default()
},
)
})
.collect()
}
fn transfer_transaction(
from: AccountId,
from_key: &PrivateKey,
from_nonce: u128,
to: AccountId,
to_key: &PrivateKey,
to_nonce: u128,
balance: u128,
) -> PublicTransaction {
let account_ids = vec![from, to];
let nonces = vec![Nonce(from_nonce), Nonce(to_nonce)];
let program_id = crate::test_methods::simple_balance_transfer().id();
let message =
public_transaction::Message::try_new(program_id, account_ids, nonces, balance).unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[from_key, to_key]);
PublicTransaction::new(message, witness_set)
}
fn build_flash_swap_tx(
initiator: &Program,
vault_id: AccountId,
receiver_id: AccountId,
instruction: FlashSwapInstruction,
) -> PublicTransaction {
let message = public_transaction::Message::try_new(
initiator.id(),
vec![vault_id, receiver_id],
vec![], // no signers — vault is PDA-authorised
instruction,
)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
PublicTransaction::new(message, witness_set)
}
fn test_public_account_keys_1() -> TestPublicKeys {
TestPublicKeys {
signing_key: PrivateKey::try_new([37; 32]).unwrap(),
}
}
fn test_public_account_keys_2() -> TestPublicKeys {
TestPublicKeys {
signing_key: PrivateKey::try_new([38; 32]).unwrap(),
}
}
pub fn test_private_account_keys_1() -> TestPrivateKeys {
TestPrivateKeys {
nsk: [13; 32],
d: [31; 32],
z: [32; 32],
}
}
pub fn test_private_account_keys_2() -> TestPrivateKeys {
TestPrivateKeys {
nsk: [38; 32],
d: [83; 32],
z: [84; 32],
}
}
fn shielded_balance_transfer_for_tests(
sender_keys: &TestPublicKeys,
recipient_keys: &TestPrivateKeys,
balance_to_move: u128,
state: &V03State,
) -> PrivacyPreservingTransaction {
let sender = AccountWithMetadata::new(
state.get_account_by_id(sender_keys.account_id()),
true,
sender_keys.account_id(),
);
let sender_nonce = sender.account.nonce;
let recipient = AccountWithMetadata::new(Account::default(), false, (&recipient_keys.npk(), 0));
let (shared_secret, epk) =
SharedSecretKey::encapsulate_deterministic(&recipient_keys.vpk(), &[0_u8; 32], 0);
let (output, proof) = crate::privacy_preserving_transaction::circuit::execute_and_prove(
vec![sender, recipient],
Program::serialize_instruction(balance_to_move).unwrap(),
vec![
InputAccountIdentity::Public,
InputAccountIdentity::PrivateUnauthorized {
epk,
view_tag: EncryptedAccountData::compute_view_tag(
&recipient_keys.npk(),
&recipient_keys.vpk(),
),
npk: recipient_keys.npk(),
ssk: shared_secret,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
},
],
&crate::test_methods::simple_balance_transfer().into(),
)
.unwrap();
let message = Message::try_from_circuit_output(
vec![sender_keys.account_id()],
vec![sender_nonce],
output,
)
.unwrap();
let witness_set = WitnessSet::for_message(&message, proof, &[&sender_keys.signing_key]);
PrivacyPreservingTransaction::new(message, witness_set)
}
fn private_balance_transfer_for_tests(
sender_keys: &TestPrivateKeys,
sender_private_account: &Account,
recipient_keys: &TestPrivateKeys,
balance_to_move: u128,
state: &V03State,
) -> PrivacyPreservingTransaction {
let program = crate::test_methods::simple_balance_transfer();
let sender_account_id = AccountId::for_regular_private_account(&sender_keys.npk(), 0);
let sender_commitment = Commitment::new(&sender_account_id, sender_private_account);
let sender_pre = AccountWithMetadata::new(
sender_private_account.clone(),
true,
(&sender_keys.npk(), 0),
);
let recipient_pre =
AccountWithMetadata::new(Account::default(), false, (&recipient_keys.npk(), 0));
let (shared_secret_1, epk_1) =
SharedSecretKey::encapsulate_deterministic(&sender_keys.vpk(), &[0_u8; 32], 0);
let (shared_secret_2, epk_2) =
SharedSecretKey::encapsulate_deterministic(&recipient_keys.vpk(), &[0_u8; 32], 1);
let (output, proof) = crate::privacy_preserving_transaction::circuit::execute_and_prove(
vec![sender_pre, recipient_pre],
Program::serialize_instruction(balance_to_move).unwrap(),
vec![
InputAccountIdentity::PrivateAuthorizedUpdate {
epk: epk_1,
view_tag: EncryptedAccountData::compute_view_tag(
&sender_keys.npk(),
&sender_keys.vpk(),
),
ssk: shared_secret_1,
nsk: sender_keys.nsk,
membership_proof: state
.get_proof_for_commitment(&sender_commitment)
.expect("sender's commitment must be in state"),
identifier: 0,
},
InputAccountIdentity::PrivateUnauthorized {
epk: epk_2,
view_tag: EncryptedAccountData::compute_view_tag(
&recipient_keys.npk(),
&recipient_keys.vpk(),
),
npk: recipient_keys.npk(),
ssk: shared_secret_2,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
},
],
&program.into(),
)
.unwrap();
let message = Message::try_from_circuit_output(vec![], vec![], output).unwrap();
let witness_set = WitnessSet::for_message(&message, proof, &[]);
PrivacyPreservingTransaction::new(message, witness_set)
}
fn deshielded_balance_transfer_for_tests(
sender_keys: &TestPrivateKeys,
sender_private_account: &Account,
recipient_account_id: &AccountId,
balance_to_move: u128,
state: &V03State,
) -> PrivacyPreservingTransaction {
let program = crate::test_methods::simple_balance_transfer();
let sender_account_id = AccountId::for_regular_private_account(&sender_keys.npk(), 0);
let sender_commitment = Commitment::new(&sender_account_id, sender_private_account);
let sender_pre = AccountWithMetadata::new(
sender_private_account.clone(),
true,
(&sender_keys.npk(), 0),
);
let recipient_pre = AccountWithMetadata::new(
state.get_account_by_id(*recipient_account_id),
false,
*recipient_account_id,
);
let (shared_secret, epk) =
SharedSecretKey::encapsulate_deterministic(&sender_keys.vpk(), &[0_u8; 32], 0);
let (output, proof) = crate::privacy_preserving_transaction::circuit::execute_and_prove(
vec![sender_pre, recipient_pre],
Program::serialize_instruction(balance_to_move).unwrap(),
vec![
InputAccountIdentity::PrivateAuthorizedUpdate {
epk,
view_tag: EncryptedAccountData::compute_view_tag(
&sender_keys.npk(),
&sender_keys.vpk(),
),
ssk: shared_secret,
nsk: sender_keys.nsk,
membership_proof: state
.get_proof_for_commitment(&sender_commitment)
.expect("sender's commitment must be in state"),
identifier: 0,
},
InputAccountIdentity::Public,
],
&program.into(),
)
.unwrap();
let message =
Message::try_from_circuit_output(vec![*recipient_account_id], vec![], output).unwrap();
let witness_set = WitnessSet::for_message(&message, proof, &[]);
PrivacyPreservingTransaction::new(message, witness_set)
}
fn valid_private_transfer_tx_and_state() -> (V03State, PrivacyPreservingTransaction) {
let sender_keys = test_private_account_keys_1();
let sender_private_account = Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: 100,
nonce: Nonce(0xdead_beef),
..Account::default()
};
let recipient_keys = test_private_account_keys_2();
let state = V03State::new().with_private_account(&sender_keys, &sender_private_account);
let tx = private_balance_transfer_for_tests(
&sender_keys,
&sender_private_account,
&recipient_keys,
37,
&state,
);
(state, tx)
}

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use super::*;
#[test]
fn transition_from_privacy_preserving_transaction_shielded() {
let sender_keys = test_public_account_keys_1();
let recipient_keys = test_private_account_keys_1();
let mut state = V03State::new().with_public_accounts([(
sender_keys.account_id(),
Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: 200,
..Account::default()
},
)]);
let balance_to_move = 37;
let tx =
shielded_balance_transfer_for_tests(&sender_keys, &recipient_keys, balance_to_move, &state);
let expected_sender_post = {
let mut this = state.get_account_by_id(sender_keys.account_id());
this.balance -= balance_to_move;
this.nonce.public_account_nonce_increment();
this
};
let [expected_new_commitment] = tx.message().new_commitments.clone().try_into().unwrap();
assert!(!state.private_state.0.contains(&expected_new_commitment));
state
.transition_from_privacy_preserving_transaction(&tx, 1, 0)
.unwrap();
let sender_post = state.get_account_by_id(sender_keys.account_id());
assert_eq!(sender_post, expected_sender_post);
assert!(state.private_state.0.contains(&expected_new_commitment));
assert_eq!(
state.get_account_by_id(sender_keys.account_id()).balance,
200 - balance_to_move
);
}
#[test]
fn transition_from_privacy_preserving_transaction_private() {
let sender_keys = test_private_account_keys_1();
let sender_nonce = Nonce(0xdead_beef);
let sender_private_account = Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: 100,
nonce: sender_nonce,
data: Data::default(),
};
let recipient_keys = test_private_account_keys_2();
let mut state = V03State::new().with_private_account(&sender_keys, &sender_private_account);
let balance_to_move = 37;
let tx = private_balance_transfer_for_tests(
&sender_keys,
&sender_private_account,
&recipient_keys,
balance_to_move,
&state,
);
let sender_account_id = AccountId::for_regular_private_account(&sender_keys.npk(), 0);
let recipient_account_id = AccountId::for_regular_private_account(&recipient_keys.npk(), 0);
let expected_new_commitment_1 = Commitment::new(
&sender_account_id,
&Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
nonce: sender_nonce.private_account_nonce_increment(&sender_keys.nsk),
balance: sender_private_account.balance - balance_to_move,
data: Data::default(),
},
);
let sender_pre_commitment = Commitment::new(&sender_account_id, &sender_private_account);
let expected_new_nullifier =
Nullifier::for_account_update(&sender_pre_commitment, &sender_keys.nsk);
let expected_new_commitment_2 = Commitment::new(
&recipient_account_id,
&Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
nonce: Nonce::private_account_nonce_init(&recipient_account_id),
balance: balance_to_move,
..Account::default()
},
);
let previous_public_state = state.public_state.clone();
assert!(state.private_state.0.contains(&sender_pre_commitment));
assert!(!state.private_state.0.contains(&expected_new_commitment_1));
assert!(!state.private_state.0.contains(&expected_new_commitment_2));
assert!(!state.private_state.1.contains(&expected_new_nullifier));
state
.transition_from_privacy_preserving_transaction(&tx, 1, 0)
.unwrap();
assert_eq!(state.public_state, previous_public_state);
assert!(state.private_state.0.contains(&sender_pre_commitment));
assert!(state.private_state.0.contains(&expected_new_commitment_1));
assert!(state.private_state.0.contains(&expected_new_commitment_2));
assert!(state.private_state.1.contains(&expected_new_nullifier));
}
/// After a valid fully-private tx is proven, tampering with a note's epk should
/// make the shielding proof invalid.
#[test]
fn privacy_tampered_epk_is_rejected() {
use crate::validated_state_diff::ValidatedStateDiff;
let (state, mut tx) = valid_private_transfer_tx_and_state();
// Baseline: the untampered tx verifies
assert!(
ValidatedStateDiff::from_privacy_preserving_transaction(&tx, &state, 1, 0).is_ok(),
"the unmodified private transfer must verify"
);
// Flip a byte of the first note's epk
tx.message.encrypted_private_post_states[0].epk.0[0] ^= 0xFF;
assert!(
matches!(
ValidatedStateDiff::from_privacy_preserving_transaction(&tx, &state, 1, 0),
Err(LeeError::InvalidPrivacyPreservingProof)
),
"a tampered epk must be rejected by proof verification"
);
}
/// After a valid fully-private tx is proven, tampering with a note's view tag should
/// make the shielding proof invalid.
#[test]
fn privacy_tampered_view_tag_is_rejected() {
use crate::validated_state_diff::ValidatedStateDiff;
let (state, mut tx) = valid_private_transfer_tx_and_state();
// Baseline: the untampered tx verifies.
assert!(
ValidatedStateDiff::from_privacy_preserving_transaction(&tx, &state, 1, 0).is_ok(),
"the unmodified private transfer must verify"
);
// Flip the first note's view_tag
tx.message.encrypted_private_post_states[0].view_tag ^= 0xFF;
assert!(
matches!(
ValidatedStateDiff::from_privacy_preserving_transaction(&tx, &state, 1, 0),
Err(LeeError::InvalidPrivacyPreservingProof)
),
"a tampered view_tag must be rejected by proof verification"
);
}
#[test]
fn transition_from_privacy_preserving_transaction_deshielded() {
let sender_keys = test_private_account_keys_1();
let sender_nonce = Nonce(0xdead_beef);
let sender_private_account = Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: 100,
nonce: sender_nonce,
data: Data::default(),
};
let recipient_keys = test_public_account_keys_1();
let recipient_initial_balance = 400;
let mut state = V03State::new()
.with_public_accounts([(
recipient_keys.account_id(),
Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: recipient_initial_balance,
..Account::default()
},
)])
.with_private_account(&sender_keys, &sender_private_account);
let balance_to_move = 37;
let expected_recipient_post = {
let mut this = state.get_account_by_id(recipient_keys.account_id());
this.balance += balance_to_move;
this
};
let tx = deshielded_balance_transfer_for_tests(
&sender_keys,
&sender_private_account,
&recipient_keys.account_id(),
balance_to_move,
&state,
);
let sender_account_id = AccountId::for_regular_private_account(&sender_keys.npk(), 0);
let expected_new_commitment = Commitment::new(
&sender_account_id,
&Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
nonce: sender_nonce.private_account_nonce_increment(&sender_keys.nsk),
balance: sender_private_account.balance - balance_to_move,
data: Data::default(),
},
);
let sender_pre_commitment = Commitment::new(&sender_account_id, &sender_private_account);
let expected_new_nullifier =
Nullifier::for_account_update(&sender_pre_commitment, &sender_keys.nsk);
assert!(state.private_state.0.contains(&sender_pre_commitment));
assert!(!state.private_state.0.contains(&expected_new_commitment));
assert!(!state.private_state.1.contains(&expected_new_nullifier));
state
.transition_from_privacy_preserving_transaction(&tx, 1, 0)
.unwrap();
let recipient_post = state.get_account_by_id(recipient_keys.account_id());
assert_eq!(recipient_post, expected_recipient_post);
assert!(state.private_state.0.contains(&sender_pre_commitment));
assert!(state.private_state.0.contains(&expected_new_commitment));
assert!(state.private_state.1.contains(&expected_new_nullifier));
assert_eq!(
state.get_account_by_id(recipient_keys.account_id()).balance,
recipient_initial_balance + balance_to_move
);
}
#[test]
fn burner_program_should_fail_in_privacy_preserving_circuit() {
let program = crate::test_methods::burner();
let public_account = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 100,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let result = execute_and_prove(
vec![public_account],
Program::serialize_instruction(10_u128).unwrap(),
vec![InputAccountIdentity::Public],
&program.into(),
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
#[test]
fn minter_program_should_fail_in_privacy_preserving_circuit() {
let program = crate::test_methods::minter();
let public_account = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 0,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let result = execute_and_prove(
vec![public_account],
Program::serialize_instruction(10_u128).unwrap(),
vec![InputAccountIdentity::Public],
&program.into(),
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
#[test]
fn nonce_changer_program_should_fail_in_privacy_preserving_circuit() {
let program = crate::test_methods::nonce_changer();
let public_account = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 0,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let result = execute_and_prove(
vec![public_account],
Program::serialize_instruction(()).unwrap(),
vec![InputAccountIdentity::Public],
&program.into(),
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
#[test]
fn data_changer_program_should_fail_for_non_owned_account_in_privacy_preserving_circuit() {
let program = crate::test_methods::data_changer();
let public_account = AccountWithMetadata::new(
Account {
program_owner: [0, 1, 2, 3, 4, 5, 6, 7],
balance: 0,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let result = execute_and_prove(
vec![public_account],
Program::serialize_instruction(vec![0]).unwrap(),
vec![InputAccountIdentity::Public],
&program.into(),
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
#[test]
fn data_changer_program_should_fail_for_too_large_data_in_privacy_preserving_circuit() {
let program = crate::test_methods::data_changer();
let public_account = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 0,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let large_data: Vec<u8> =
vec![
0;
usize::try_from(lee_core::account::data::DATA_MAX_LENGTH.as_u64())
.expect("DATA_MAX_LENGTH fits in usize")
+ 1
];
let result = execute_and_prove(
vec![public_account],
Program::serialize_instruction(large_data).unwrap(),
vec![InputAccountIdentity::Public],
&program.into(),
);
assert!(matches!(result, Err(LeeError::ProgramProveFailed(_))));
}
#[test]
fn extra_output_program_should_fail_in_privacy_preserving_circuit() {
let program = crate::test_methods::extra_output();
let public_account = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 0,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let result = execute_and_prove(
vec![public_account],
Program::serialize_instruction(()).unwrap(),
vec![InputAccountIdentity::Public],
&program.into(),
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
#[test]
fn missing_output_program_should_fail_in_privacy_preserving_circuit() {
let program = crate::test_methods::missing_output();
let public_account_1 = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 0,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let public_account_2 = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 0,
..Account::default()
},
true,
AccountId::new([1; 32]),
);
let result = execute_and_prove(
vec![public_account_1, public_account_2],
Program::serialize_instruction(()).unwrap(),
vec![InputAccountIdentity::Public, InputAccountIdentity::Public],
&program.into(),
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
#[test]
fn program_owner_changer_should_fail_in_privacy_preserving_circuit() {
let program = crate::test_methods::program_owner_changer();
let public_account = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 0,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let result = execute_and_prove(
vec![public_account],
Program::serialize_instruction(()).unwrap(),
vec![InputAccountIdentity::Public],
&program.into(),
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
#[test]
fn transfer_from_non_owned_account_should_fail_in_privacy_preserving_circuit() {
let program = crate::test_methods::simple_balance_transfer();
let public_account_1 = AccountWithMetadata::new(
Account {
program_owner: [0, 1, 2, 3, 4, 5, 6, 7],
balance: 100,
..Account::default()
},
true,
AccountId::new([0; 32]),
);
let public_account_2 = AccountWithMetadata::new(
Account {
program_owner: program.id(),
balance: 0,
..Account::default()
},
true,
AccountId::new([1; 32]),
);
let result = execute_and_prove(
vec![public_account_1, public_account_2],
Program::serialize_instruction(10_u128).unwrap(),
vec![InputAccountIdentity::Public, InputAccountIdentity::Public],
&program.into(),
);
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}
#[test]
fn malicious_authorization_changer_should_fail_in_privacy_preserving_circuit() {
// Arrange
let malicious_program = crate::test_methods::malicious_authorization_changer();
let simple_transfers = crate::test_methods::simple_balance_transfer();
let sender_keys = test_public_account_keys_1();
let recipient_keys = test_private_account_keys_1();
let sender_account = AccountWithMetadata::new(
Account {
program_owner: simple_transfers.id(),
balance: 100,
..Default::default()
},
false,
sender_keys.account_id(),
);
let recipient_account =
AccountWithMetadata::new(Account::default(), true, (&recipient_keys.npk(), 0));
let recipient_account_id = AccountId::for_regular_private_account(&recipient_keys.npk(), 0);
let recipient_commitment = Commitment::new(&recipient_account_id, &recipient_account.account);
let recipient_init_nullifier = Nullifier::for_account_initialization(&recipient_account_id);
let state = V03State::new()
.with_public_accounts(public_state_from_balances(&[(
sender_account.account_id,
sender_account.account.balance,
)]))
.with_private_accounts([(recipient_commitment.clone(), recipient_init_nullifier)])
.with_test_programs();
let balance_to_transfer = 10_u128;
let instruction = (balance_to_transfer, simple_transfers.id());
let recipient =
SharedSecretKey::encapsulate_deterministic(&recipient_keys.vpk(), &[0_u8; 32], 0).0;
let mut dependencies = HashMap::new();
dependencies.insert(simple_transfers.id(), simple_transfers);
let program_with_deps = ProgramWithDependencies::new(malicious_program, dependencies);
// Act - execute the malicious program - this should fail during proving
let result = execute_and_prove(
vec![sender_account, recipient_account],
Program::serialize_instruction(instruction).unwrap(),
vec![
InputAccountIdentity::Public,
InputAccountIdentity::PrivateAuthorizedUpdate {
epk: EphemeralPublicKey(Vec::new()),
view_tag: EncryptedAccountData::compute_view_tag(
&recipient_keys.npk(),
&recipient_keys.vpk(),
),
ssk: recipient,
nsk: recipient_keys.nsk,
membership_proof: state
.get_proof_for_commitment(&recipient_commitment)
.expect("recipient's commitment must be in state"),
identifier: 0,
},
],
&program_with_deps,
);
// Assert - should fail because the malicious program tries to manipulate is_authorized
assert!(matches!(result, Err(LeeError::CircuitProvingError(_))));
}

325
lee/state_machine/src/state/tests/public_program_rules.rs Normal file
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@ -0,0 +1,325 @@
use super::*;
#[test]
fn program_should_fail_if_modifies_nonces() {
let account_id = AccountId::new([1; 32]);
let mut state = V03State::new()
.with_public_account_balances([(account_id, 100)])
.with_test_programs();
let account_ids = vec![account_id];
let program_id = crate::test_methods::nonce_changer().id();
let message =
public_transaction::Message::try_new(program_id, account_ids, vec![], ()).unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(
InvalidProgramBehaviorError::ExecutionValidationFailed(
ExecutionValidationError::ModifiedNonce { account_id: err_account_id }
)
)) if err_account_id == account_id
));
}
#[test]
fn program_should_fail_if_output_accounts_exceed_inputs() {
let mut state = V03State::new()
.with_public_account_balances([(AccountId::new([1; 32]), 0)])
.with_test_programs();
let account_ids = vec![AccountId::new([1; 32])];
let program_id = crate::test_methods::extra_output().id();
let message =
public_transaction::Message::try_new(program_id, account_ids, vec![], ()).unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(
InvalidProgramBehaviorError::ExecutionValidationFailed(
ExecutionValidationError::MismatchedPreStatePostStateLength {
pre_state_length,
post_state_length
}
)
)) if pre_state_length == 1 && post_state_length == 2
));
}
#[test]
fn program_should_fail_with_missing_output_accounts() {
let mut state = V03State::new()
.with_public_account_balances([(AccountId::new([1; 32]), 100)])
.with_test_programs();
let account_ids = vec![AccountId::new([1; 32]), AccountId::new([2; 32])];
let program_id = crate::test_methods::missing_output().id();
let message =
public_transaction::Message::try_new(program_id, account_ids, vec![], ()).unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(
InvalidProgramBehaviorError::ExecutionValidationFailed(
ExecutionValidationError::MismatchedPreStatePostStateLength {
pre_state_length,
post_state_length
}
)
)) if pre_state_length == 2 && post_state_length == 1
));
}
#[test]
fn program_should_fail_if_modifies_program_owner_with_only_non_default_program_owner() {
let initial_data = [(
AccountId::new([1; 32]),
Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
..Account::default()
},
)];
let mut state = V03State::new()
.with_public_accounts(initial_data)
.with_test_programs();
let account_id = AccountId::new([1; 32]);
let account = state.get_account_by_id(account_id);
// Assert the target account only differs from the default account in the program owner
// field
assert_ne!(account.program_owner, Account::default().program_owner);
assert_eq!(account.balance, Account::default().balance);
assert_eq!(account.nonce, Account::default().nonce);
assert_eq!(account.data, Account::default().data);
let program_id = crate::test_methods::program_owner_changer().id();
let message =
public_transaction::Message::try_new(program_id, vec![account_id], vec![], ()).unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(InvalidProgramBehaviorError::ExecutionValidationFailed(
ExecutionValidationError::ModifiedProgramOwner { account_id: err_account_id }
))) if err_account_id == account_id
));
}
#[test]
fn program_should_fail_if_modifies_program_owner_with_only_non_default_balance() {
let initial_data = HashMap::new();
let mut state = V03State::new()
.with_public_accounts(initial_data)
.with_test_programs()
.with_non_default_accounts_but_default_program_owners();
let account_id = AccountId::new([255; 32]);
let account = state.get_account_by_id(account_id);
// Assert the target account only differs from the default account in balance field
assert_eq!(account.program_owner, Account::default().program_owner);
assert_ne!(account.balance, Account::default().balance);
assert_eq!(account.nonce, Account::default().nonce);
assert_eq!(account.data, Account::default().data);
let program_id = crate::test_methods::program_owner_changer().id();
let message =
public_transaction::Message::try_new(program_id, vec![account_id], vec![], ()).unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(InvalidProgramBehaviorError::ExecutionValidationFailed(
ExecutionValidationError::ModifiedProgramOwner { account_id: err_account_id }
))) if err_account_id == account_id
));
}
#[test]
fn program_should_fail_if_modifies_program_owner_with_only_non_default_nonce() {
let initial_data = HashMap::new();
let mut state = V03State::new()
.with_public_accounts(initial_data)
.with_test_programs()
.with_non_default_accounts_but_default_program_owners();
let account_id = AccountId::new([254; 32]);
let account = state.get_account_by_id(account_id);
// Assert the target account only differs from the default account in nonce field
assert_eq!(account.program_owner, Account::default().program_owner);
assert_eq!(account.balance, Account::default().balance);
assert_ne!(account.nonce, Account::default().nonce);
assert_eq!(account.data, Account::default().data);
let program_id = crate::test_methods::program_owner_changer().id();
let message =
public_transaction::Message::try_new(program_id, vec![account_id], vec![], ()).unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(InvalidProgramBehaviorError::ExecutionValidationFailed(
ExecutionValidationError::ModifiedProgramOwner { account_id: err_account_id }
))) if err_account_id == account_id
));
}
#[test]
fn program_should_fail_if_modifies_program_owner_with_only_non_default_data() {
let initial_data = HashMap::new();
let mut state = V03State::new()
.with_public_accounts(initial_data)
.with_test_programs()
.with_non_default_accounts_but_default_program_owners();
let account_id = AccountId::new([253; 32]);
let account = state.get_account_by_id(account_id);
// Assert the target account only differs from the default account in data field
assert_eq!(account.program_owner, Account::default().program_owner);
assert_eq!(account.balance, Account::default().balance);
assert_eq!(account.nonce, Account::default().nonce);
assert_ne!(account.data, Account::default().data);
let program_id = crate::test_methods::program_owner_changer().id();
let message =
public_transaction::Message::try_new(program_id, vec![account_id], vec![], ()).unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(InvalidProgramBehaviorError::ExecutionValidationFailed(
ExecutionValidationError::ModifiedProgramOwner { account_id: err_account_id }
))) if err_account_id == account_id
));
}
#[test]
fn program_should_fail_if_transfers_balance_from_non_owned_account() {
let sender_account_id = AccountId::new([1; 32]);
let receiver_account_id = AccountId::new([2; 32]);
let mut state = V03State::new()
.with_public_account_balances([(sender_account_id, 100)])
.with_test_programs();
let balance_to_move: u128 = 1;
let program_id = crate::test_methods::simple_balance_transfer().id();
assert_ne!(
state.get_account_by_id(sender_account_id).program_owner,
program_id
);
let message = public_transaction::Message::try_new(
program_id,
vec![sender_account_id, receiver_account_id],
vec![],
balance_to_move,
)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(InvalidProgramBehaviorError::ExecutionValidationFailed(
ExecutionValidationError::UnauthorizedBalanceDecrease { account_id: err_account_id, owner_program_id, executing_program_id }
))) if err_account_id == sender_account_id && owner_program_id != program_id && executing_program_id == program_id
));
}
#[test]
fn program_should_fail_if_modifies_data_of_non_owned_account() {
let initial_data = HashMap::new();
let mut state = V03State::new()
.with_public_accounts(initial_data)
.with_test_programs()
.with_non_default_accounts_but_default_program_owners();
let account_id = AccountId::new([255; 32]);
let program_id = crate::test_methods::data_changer().id();
assert_ne!(state.get_account_by_id(account_id), Account::default());
assert_ne!(
state.get_account_by_id(account_id).program_owner,
program_id
);
let message =
public_transaction::Message::try_new(program_id, vec![account_id], vec![], vec![0])
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 1, 0);
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(InvalidProgramBehaviorError::ExecutionValidationFailed(
ExecutionValidationError::UnauthorizedDataModification { account_id: err_account_id, executing_program_id }
))) if err_account_id == account_id && executing_program_id == program_id
));
}
#[test]
fn program_should_fail_if_does_not_preserve_total_balance_by_minting() {
let initial_data = HashMap::new();
let mut state = V03State::new()
.with_public_accounts(initial_data)
.with_test_programs();
let account_id = AccountId::new([1; 32]);
let program_id = crate::test_methods::minter().id();
let message =
public_transaction::Message::try_new(program_id, vec![account_id], vec![], ()).unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 2, 0);
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(InvalidProgramBehaviorError::ExecutionValidationFailed(
ExecutionValidationError::MismatchedTotalBalance { total_balance_pre_states, total_balance_post_states }
))) if total_balance_pre_states == 0.into() && total_balance_post_states == 1.into()
));
}
#[test]
fn program_should_fail_if_does_not_preserve_total_balance_by_burning() {
let initial_data = HashMap::new();
let mut state = V03State::new()
.with_public_accounts(initial_data)
.with_test_programs()
.with_account_owned_by_burner_program();
let program_id = crate::test_methods::burner().id();
let account_id = AccountId::new([252; 32]);
assert_eq!(
state.get_account_by_id(account_id).program_owner,
program_id
);
let balance_to_burn: u128 = 1;
assert!(state.get_account_by_id(account_id).balance > balance_to_burn);
let message =
public_transaction::Message::try_new(program_id, vec![account_id], vec![], balance_to_burn)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
let tx = PublicTransaction::new(message, witness_set);
let result = state.transition_from_public_transaction(&tx, 2, 0);
assert!(matches!(
result,
Err(LeeError::InvalidProgramBehavior(InvalidProgramBehaviorError::ExecutionValidationFailed(
ExecutionValidationError::MismatchedTotalBalance { total_balance_pre_states, total_balance_post_states }
))) if total_balance_pre_states == 100.into() && total_balance_post_states == 99.into()
));
}

243
lee/state_machine/src/state/tests/validity_window.rs Normal file
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@ -0,0 +1,243 @@
use super::*;
#[test_case::test_case((Some(1), Some(3)), 3; "at upper bound")]
#[test_case::test_case((Some(1), Some(3)), 2; "inside range")]
#[test_case::test_case((Some(1), Some(3)), 0; "below range")]
#[test_case::test_case((Some(1), Some(3)), 1; "at lower bound")]
#[test_case::test_case((Some(1), Some(3)), 4; "above range")]
#[test_case::test_case((Some(1), None), 1; "lower bound only - at bound")]
#[test_case::test_case((Some(1), None), 10; "lower bound only - above")]
#[test_case::test_case((Some(1), None), 0; "lower bound only - below")]
#[test_case::test_case((None, Some(3)), 3; "upper bound only - at bound")]
#[test_case::test_case((None, Some(3)), 0; "upper bound only - below")]
#[test_case::test_case((None, Some(3)), 4; "upper bound only - above")]
#[test_case::test_case((None, None), 0; "no bounds - always valid")]
#[test_case::test_case((None, None), 100; "no bounds - always valid 2")]
fn validity_window_works_in_public_transactions(
validity_window: (Option<BlockId>, Option<BlockId>),
block_id: BlockId,
) {
let block_validity_window: BlockValidityWindow = validity_window.try_into().unwrap();
let validity_window_program = crate::test_methods::validity_window();
let account_keys = test_public_account_keys_1();
let pre = AccountWithMetadata::new(Account::default(), false, account_keys.account_id());
let mut state = V03State::new().with_test_programs();
let tx = {
let account_ids = vec![pre.account_id];
let nonces = vec![];
let program_id = validity_window_program.id();
let instruction = (
block_validity_window,
TimestampValidityWindow::new_unbounded(),
);
let message =
public_transaction::Message::try_new(program_id, account_ids, nonces, instruction)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
PublicTransaction::new(message, witness_set)
};
let result = state.transition_from_public_transaction(&tx, block_id, 0);
let is_inside_validity_window =
match (block_validity_window.start(), block_validity_window.end()) {
(Some(s), Some(e)) => s <= block_id && block_id < e,
(Some(s), None) => s <= block_id,
(None, Some(e)) => block_id < e,
(None, None) => true,
};
if is_inside_validity_window {
assert!(result.is_ok());
} else {
assert!(matches!(result, Err(LeeError::OutOfValidityWindow)));
}
}
#[test_case::test_case((Some(1), Some(3)), 3; "at upper bound")]
#[test_case::test_case((Some(1), Some(3)), 2; "inside range")]
#[test_case::test_case((Some(1), Some(3)), 0; "below range")]
#[test_case::test_case((Some(1), Some(3)), 1; "at lower bound")]
#[test_case::test_case((Some(1), Some(3)), 4; "above range")]
#[test_case::test_case((Some(1), None), 1; "lower bound only - at bound")]
#[test_case::test_case((Some(1), None), 10; "lower bound only - above")]
#[test_case::test_case((Some(1), None), 0; "lower bound only - below")]
#[test_case::test_case((None, Some(3)), 3; "upper bound only - at bound")]
#[test_case::test_case((None, Some(3)), 0; "upper bound only - below")]
#[test_case::test_case((None, Some(3)), 4; "upper bound only - above")]
#[test_case::test_case((None, None), 0; "no bounds - always valid")]
#[test_case::test_case((None, None), 100; "no bounds - always valid 2")]
fn timestamp_validity_window_works_in_public_transactions(
validity_window: (Option<Timestamp>, Option<Timestamp>),
timestamp: Timestamp,
) {
let timestamp_validity_window: TimestampValidityWindow = validity_window.try_into().unwrap();
let validity_window_program = crate::test_methods::validity_window();
let account_keys = test_public_account_keys_1();
let pre = AccountWithMetadata::new(Account::default(), false, account_keys.account_id());
let mut state = V03State::new().with_test_programs();
let tx = {
let account_ids = vec![pre.account_id];
let nonces = vec![];
let program_id = validity_window_program.id();
let instruction = (
BlockValidityWindow::new_unbounded(),
timestamp_validity_window,
);
let message =
public_transaction::Message::try_new(program_id, account_ids, nonces, instruction)
.unwrap();
let witness_set = public_transaction::WitnessSet::for_message(&message, &[]);
PublicTransaction::new(message, witness_set)
};
let result = state.transition_from_public_transaction(&tx, 1, timestamp);
let is_inside_validity_window = match (
timestamp_validity_window.start(),
timestamp_validity_window.end(),
) {
(Some(s), Some(e)) => s <= timestamp && timestamp < e,
(Some(s), None) => s <= timestamp,
(None, Some(e)) => timestamp < e,
(None, None) => true,
};
if is_inside_validity_window {
assert!(result.is_ok());
} else {
assert!(matches!(result, Err(LeeError::OutOfValidityWindow)));
}
}
#[test_case::test_case((Some(1), Some(3)), 3; "at upper bound")]
#[test_case::test_case((Some(1), Some(3)), 2; "inside range")]
#[test_case::test_case((Some(1), Some(3)), 0; "below range")]
#[test_case::test_case((Some(1), Some(3)), 1; "at lower bound")]
#[test_case::test_case((Some(1), Some(3)), 4; "above range")]
#[test_case::test_case((Some(1), None), 1; "lower bound only - at bound")]
#[test_case::test_case((Some(1), None), 10; "lower bound only - above")]
#[test_case::test_case((Some(1), None), 0; "lower bound only - below")]
#[test_case::test_case((None, Some(3)), 3; "upper bound only - at bound")]
#[test_case::test_case((None, Some(3)), 0; "upper bound only - below")]
#[test_case::test_case((None, Some(3)), 4; "upper bound only - above")]
#[test_case::test_case((None, None), 0; "no bounds - always valid")]
#[test_case::test_case((None, None), 100; "no bounds - always valid 2")]
fn validity_window_works_in_privacy_preserving_transactions(
validity_window: (Option<BlockId>, Option<BlockId>),
block_id: BlockId,
) {
let block_validity_window: BlockValidityWindow = validity_window.try_into().unwrap();
let validity_window_program = crate::test_methods::validity_window();
let account_keys = test_private_account_keys_1();
let pre = AccountWithMetadata::new(Account::default(), false, (&account_keys.npk(), 0));
let mut state = V03State::new().with_test_programs();
let tx = {
let (shared_secret, epk) =
SharedSecretKey::encapsulate_deterministic(&account_keys.vpk(), &[0_u8; 32], 0);
let instruction = (
block_validity_window,
TimestampValidityWindow::new_unbounded(),
);
let (output, proof) = crate::privacy_preserving_transaction::circuit::execute_and_prove(
vec![pre],
Program::serialize_instruction(instruction).unwrap(),
vec![InputAccountIdentity::PrivateUnauthorized {
epk,
view_tag: EncryptedAccountData::compute_view_tag(
&account_keys.npk(),
&account_keys.vpk(),
),
npk: account_keys.npk(),
ssk: shared_secret,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
}],
&validity_window_program.into(),
)
.unwrap();
let message = Message::try_from_circuit_output(vec![], vec![], output).unwrap();
let witness_set = WitnessSet::for_message(&message, proof, &[]);
PrivacyPreservingTransaction::new(message, witness_set)
};
let result = state.transition_from_privacy_preserving_transaction(&tx, block_id, 0);
let is_inside_validity_window =
match (block_validity_window.start(), block_validity_window.end()) {
(Some(s), Some(e)) => s <= block_id && block_id < e,
(Some(s), None) => s <= block_id,
(None, Some(e)) => block_id < e,
(None, None) => true,
};
if is_inside_validity_window {
assert!(result.is_ok());
} else {
assert!(matches!(result, Err(LeeError::OutOfValidityWindow)));
}
}
#[test_case::test_case((Some(1), Some(3)), 3; "at upper bound")]
#[test_case::test_case((Some(1), Some(3)), 2; "inside range")]
#[test_case::test_case((Some(1), Some(3)), 0; "below range")]
#[test_case::test_case((Some(1), Some(3)), 1; "at lower bound")]
#[test_case::test_case((Some(1), Some(3)), 4; "above range")]
#[test_case::test_case((Some(1), None), 1; "lower bound only - at bound")]
#[test_case::test_case((Some(1), None), 10; "lower bound only - above")]
#[test_case::test_case((Some(1), None), 0; "lower bound only - below")]
#[test_case::test_case((None, Some(3)), 3; "upper bound only - at bound")]
#[test_case::test_case((None, Some(3)), 0; "upper bound only - below")]
#[test_case::test_case((None, Some(3)), 4; "upper bound only - above")]
#[test_case::test_case((None, None), 0; "no bounds - always valid")]
#[test_case::test_case((None, None), 100; "no bounds - always valid 2")]
fn timestamp_validity_window_works_in_privacy_preserving_transactions(
validity_window: (Option<Timestamp>, Option<Timestamp>),
timestamp: Timestamp,
) {
let timestamp_validity_window: TimestampValidityWindow = validity_window.try_into().unwrap();
let validity_window_program = crate::test_methods::validity_window();
let account_keys = test_private_account_keys_1();
let pre = AccountWithMetadata::new(Account::default(), false, (&account_keys.npk(), 0));
let mut state = V03State::new().with_test_programs();
let tx = {
let (shared_secret, epk) =
SharedSecretKey::encapsulate_deterministic(&account_keys.vpk(), &[0_u8; 32], 0);
let instruction = (
BlockValidityWindow::new_unbounded(),
timestamp_validity_window,
);
let (output, proof) = crate::privacy_preserving_transaction::circuit::execute_and_prove(
vec![pre],
Program::serialize_instruction(instruction).unwrap(),
vec![InputAccountIdentity::PrivateUnauthorized {
epk,
view_tag: EncryptedAccountData::compute_view_tag(
&account_keys.npk(),
&account_keys.vpk(),
),
npk: account_keys.npk(),
ssk: shared_secret,
identifier: 0,
commitment_root: DUMMY_COMMITMENT_HASH,
}],
&validity_window_program.into(),
)
.unwrap();
let message = Message::try_from_circuit_output(vec![], vec![], output).unwrap();
let witness_set = WitnessSet::for_message(&message, proof, &[]);
PrivacyPreservingTransaction::new(message, witness_set)
};
let result = state.transition_from_privacy_preserving_transaction(&tx, 1, timestamp);
let is_inside_validity_window = match (
timestamp_validity_window.start(),
timestamp_validity_window.end(),
) {
(Some(s), Some(e)) => s <= timestamp && timestamp < e,
(Some(s), None) => s <= timestamp,
(None, Some(e)) => timestamp < e,
(None, None) => true,
};
if is_inside_validity_window {
assert!(result.is_ok());
} else {
assert!(matches!(result, Err(LeeError::OutOfValidityWindow)));
}
}

1055
lee/state_machine/src/validated_state_diff.rs
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521
lee/state_machine/src/validated_state_diff/mod.rs Normal file
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use std::{
collections::{HashMap, HashSet, VecDeque},
hash::Hash,
};
use lee_core::{
BlockId, Commitment, Nullifier, PrivacyPreservingCircuitOutput, Timestamp,
account::{Account, AccountId, AccountWithMetadata},
program::{
ChainedCall, Claim, DEFAULT_PROGRAM_ID, ProgramId, compute_public_authorized_pdas,
validate_execution,
},
};
use log::debug;
use crate::{
V03State, ensure,
error::{InvalidProgramBehaviorError, LeeError},
privacy_preserving_transaction::{
PrivacyPreservingTransaction, circuit::Proof, message::Message,
},
program::Program,
program_deployment_transaction::ProgramDeploymentTransaction,
public_transaction::PublicTransaction,
state::MAX_NUMBER_CHAINED_CALLS,
};
pub struct StateDiff {
pub signer_account_ids: Vec<AccountId>,
pub public_diff: HashMap<AccountId, Account>,
pub new_commitments: Vec<Commitment>,
pub new_nullifiers: Vec<Nullifier>,
pub program: Option<Program>,
}
/// The validated output of executing or verifying a transaction, ready to be applied to the state.
///
/// Can only be constructed by the transaction validation functions inside this crate, ensuring the
/// diff has been checked before any state mutation occurs.
pub struct ValidatedStateDiff(StateDiff);
impl ValidatedStateDiff {
pub fn from_public_transaction(
tx: &PublicTransaction,
state: &V03State,
block_id: BlockId,
timestamp: Timestamp,
) -> Result<Self, LeeError> {
let signer_account_ids = authenticate_public_transaction_signers(tx, state)?;
let message = tx.message();
ensure!(
!message.account_ids.is_empty(),
LeeError::InvalidInput("Public transaction must have at least one account".into())
);
// All account_ids must be different
ensure!(
message.account_ids.iter().collect::<HashSet<_>>().len() == message.account_ids.len(),
LeeError::InvalidInput("Duplicate account_ids found in message".into(),)
);
// Build pre_states for execution
let input_pre_states: Vec<_> = message
.account_ids
.iter()
.map(|account_id| {
AccountWithMetadata::new(
state.get_account_by_id(*account_id),
signer_account_ids.contains(account_id),
*account_id,
)
})
.collect();
let mut state_diff: HashMap<AccountId, Account> = HashMap::new();
let initial_call = ChainedCall {
program_id: message.program_id,
instruction_data: message.instruction_data.clone(),
pre_states: input_pre_states,
pda_seeds: vec![],
};
let initial_caller_data = CallerData {
program_id: None,
authorized_accounts: signer_account_ids.iter().copied().collect(),
};
let mut chained_calls =
VecDeque::<(ChainedCall, CallerData)>::from_iter([(initial_call, initial_caller_data)]);
let mut chain_calls_counter = 0;
while let Some((chained_call, caller_data)) = chained_calls.pop_front() {
ensure!(
chain_calls_counter <= MAX_NUMBER_CHAINED_CALLS,
LeeError::MaxChainedCallsDepthExceeded
);
// Check that the `program_id` corresponds to a deployed program
let Some(program) = state.programs().get(&chained_call.program_id) else {
return Err(LeeError::InvalidInput("Unknown program".into()));
};
debug!(
"Program {:?} pre_states: {:?}, instruction_data: {:?}",
chained_call.program_id, chained_call.pre_states, chained_call.instruction_data
);
let mut program_output = program.execute(
caller_data.program_id,
&chained_call.pre_states,
&chained_call.instruction_data,
)?;
debug!(
"Program {:?} output: {:?}",
chained_call.program_id, program_output
);
let authorized_pdas =
compute_public_authorized_pdas(caller_data.program_id, &chained_call.pda_seeds);
// Account is authorized if it is either in the caller's authorized accounts or in the
// list of PDAs the caller has authorized.
let is_authorized = |account_id: &AccountId| {
authorized_pdas.contains(account_id)
|| caller_data.authorized_accounts.contains(account_id)
};
for pre in &program_output.pre_states {
let account_id = pre.account_id;
// Check that the program output pre_states coincide with the values in the public
// state or with any modifications to those values during the chain of calls.
let expected_pre = state_diff
.get(&account_id)
.cloned()
.unwrap_or_else(|| state.get_account_by_id(account_id));
ensure!(
pre.account == expected_pre,
InvalidProgramBehaviorError::InconsistentAccountPreState {
account_id,
expected: Box::new(expected_pre),
actual: Box::new(pre.account.clone())
}
);
// Check that the program output pre_states marked as authorized are indeed
// authorized, and vice-versa.
let is_indeed_authorized = is_authorized(&account_id);
ensure!(
!pre.is_authorized || is_indeed_authorized,
InvalidProgramBehaviorError::InvalidAccountAuthorization { account_id }
);
ensure!(
pre.is_authorized || !is_indeed_authorized,
InvalidProgramBehaviorError::AuthorizedAccountMarkedAsNotAuthorized {
account_id
}
);
}
// Verify that the program output's self_program_id matches the expected program ID.
ensure!(
program_output.self_program_id == chained_call.program_id,
InvalidProgramBehaviorError::MismatchedProgramId {
expected: chained_call.program_id,
actual: program_output.self_program_id
}
);
// Verify that the program output's caller_program_id matches the actual caller.
ensure!(
program_output.caller_program_id == caller_data.program_id,
InvalidProgramBehaviorError::MismatchedCallerProgramId {
expected: caller_data.program_id,
actual: program_output.caller_program_id,
}
);
// Verify execution corresponds to a well-behaved program.
// See the # Programs section for the definition of the `validate_execution` method.
validate_execution(
&program_output.pre_states,
&program_output.post_states,
chained_call.program_id,
)
.map_err(InvalidProgramBehaviorError::ExecutionValidationFailed)?;
// Verify validity window
ensure!(
program_output.block_validity_window.is_valid_for(block_id)
&& program_output
.timestamp_validity_window
.is_valid_for(timestamp),
LeeError::OutOfValidityWindow
);
for (i, post) in program_output.post_states.iter_mut().enumerate() {
let Some(claim) = post.required_claim() else {
continue;
};
let pre = &program_output.pre_states[i];
let account_id = pre.account_id;
// The invoked program can only claim accounts with default program id.
ensure!(
post.account().program_owner == DEFAULT_PROGRAM_ID,
InvalidProgramBehaviorError::ClaimedNonDefaultAccount { account_id }
);
match claim {
Claim::Authorized => {
// The program can only claim accounts that were authorized by the signer.
ensure!(
pre.is_authorized,
InvalidProgramBehaviorError::ClaimedUnauthorizedAccount { account_id }
);
}
Claim::Pda(seed) => {
// The program can only claim accounts that correspond to the PDAs it is
// authorized to claim. The public-execution path only sees public
// accounts, so the public-PDA derivation is the correct formula here.
let pda = AccountId::for_public_pda(&chained_call.program_id, &seed);
ensure!(
account_id == pda,
InvalidProgramBehaviorError::MismatchedPdaClaim {
expected: pda,
actual: account_id
}
);
}
}
post.account_mut().program_owner = chained_call.program_id;
}
// Update the state diff
for (pre, post) in program_output
.pre_states
.iter()
.zip(program_output.post_states.iter())
{
state_diff.insert(pre.account_id, post.account().clone());
}
// Source from `program_output.pre_states`, not `chained_call.pre_states`:
// the loop above already gates program_output's `is_authorized` via the
// `!pre.is_authorized || is_indeed_authorized` check, while `chained_call.
// pre_states` is caller-controlled and can be forged (audit-issue 91).
//
// Union with the caller's authorized set so that authorization is monotonically
// growing: once an account is authorized at any point in the chain it remains
// authorized for all subsequent calls.
let authorized_accounts: HashSet<_> = caller_data
.authorized_accounts
.into_iter()
.chain(
program_output
.pre_states
.iter()
.filter(|pre| pre.is_authorized)
.map(|pre| pre.account_id),
)
.collect();
for new_call in program_output.chained_calls.into_iter().rev() {
chained_calls.push_front((
new_call,
CallerData {
program_id: Some(chained_call.program_id),
authorized_accounts: authorized_accounts.clone(),
},
));
}
chain_calls_counter = chain_calls_counter
.checked_add(1)
.expect("we check the max depth at the beginning of the loop");
}
// Check that all modified uninitialized accounts where claimed
for (account_id, post) in state_diff.iter().filter_map(|(account_id, post)| {
let pre = state.get_account_by_id(*account_id);
if pre.program_owner != DEFAULT_PROGRAM_ID {
return None;
}
if pre == *post {
return None;
}
Some((*account_id, post))
}) {
ensure!(
post.program_owner != DEFAULT_PROGRAM_ID,
InvalidProgramBehaviorError::DefaultAccountModifiedWithoutClaim { account_id }
);
}
Ok(Self(StateDiff {
signer_account_ids,
public_diff: state_diff,
new_commitments: vec![],
new_nullifiers: vec![],
program: None,
}))
}
pub fn from_privacy_preserving_transaction(
tx: &PrivacyPreservingTransaction,
state: &V03State,
block_id: BlockId,
timestamp: Timestamp,
) -> Result<Self, LeeError> {
let message = &tx.message;
let witness_set = &tx.witness_set;
// 1. Commitments or nullifiers are non empty
ensure!(
!message.new_commitments.is_empty() || !message.new_nullifiers.is_empty(),
LeeError::InvalidInput(
"Empty commitments and empty nullifiers found in message".into(),
)
);
// 2. Check there are no duplicate account_ids in the public_account_ids list.
ensure!(
n_unique(&message.public_account_ids) == message.public_account_ids.len(),
LeeError::InvalidInput("Duplicate account_ids found in message".into())
);
// Check there are no duplicate nullifiers in the new_nullifiers list
ensure!(
n_unique(
&message
.new_nullifiers
.iter()
.map(|(n, _)| n)
.collect::<Vec<_>>()
) == message.new_nullifiers.len(),
LeeError::InvalidInput("Duplicate nullifiers found in message".into())
);
// Check there are no duplicate commitments in the new_commitments list
ensure!(
n_unique(&message.new_commitments) == message.new_commitments.len(),
LeeError::InvalidInput("Duplicate commitments found in message".into())
);
// 3. Nonce checks and Valid signatures
// Check exactly one nonce is provided for each signature
ensure!(
message.nonces.len() == witness_set.signatures_and_public_keys.len(),
LeeError::InvalidInput(
"Mismatch between number of nonces and signatures/public keys".into(),
)
);
// Check the signatures are valid
ensure!(
witness_set.signatures_are_valid_for(message),
LeeError::InvalidInput("Invalid signature for given message and public key".into())
);
let signer_account_ids = tx.signer_account_ids();
// Check nonces corresponds to the current nonces on the public state.
for (account_id, nonce) in signer_account_ids.iter().zip(&message.nonces) {
let current_nonce = state.get_account_by_id(*account_id).nonce;
ensure!(
current_nonce == *nonce,
LeeError::InvalidInput("Nonce mismatch".into())
);
}
// Verify validity window
ensure!(
message.block_validity_window.is_valid_for(block_id)
&& message.timestamp_validity_window.is_valid_for(timestamp),
LeeError::OutOfValidityWindow
);
// Build pre_states for proof verification
let public_pre_states: Vec<_> = message
.public_account_ids
.iter()
.map(|account_id| {
AccountWithMetadata::new(
state.get_account_by_id(*account_id),
signer_account_ids.contains(account_id),
*account_id,
)
})
.collect();
// 4. Proof verification
check_privacy_preserving_circuit_proof_is_valid(
&witness_set.proof,
&public_pre_states,
message,
)?;
// 5. Commitment freshness
state.check_commitments_are_new(&message.new_commitments)?;
// 6. Nullifier uniqueness
state.check_nullifiers_are_valid(&message.new_nullifiers)?;
let public_diff = message
.public_account_ids
.iter()
.copied()
.zip(message.public_post_states.clone())
.collect();
let new_nullifiers = message
.new_nullifiers
.iter()
.copied()
.map(|(nullifier, _)| nullifier)
.collect();
Ok(Self(StateDiff {
signer_account_ids,
public_diff,
new_commitments: message.new_commitments.clone(),
new_nullifiers,
program: None,
}))
}
pub fn from_program_deployment_transaction(
tx: &ProgramDeploymentTransaction,
state: &V03State,
) -> Result<Self, LeeError> {
// TODO: remove clone
let program = Program::new(tx.message.bytecode.clone().into())?;
if state.programs().contains_key(&program.id()) {
return Err(LeeError::ProgramAlreadyExists);
}
Ok(Self(StateDiff {
signer_account_ids: vec![],
public_diff: HashMap::new(),
new_commitments: vec![],
new_nullifiers: vec![],
program: Some(program),
}))
}
/// Returns the public account changes produced by this transaction.
///
/// Used by callers (e.g. the sequencer) to inspect the diff before committing it, for example
/// to enforce that system accounts are not modified by user transactions.
#[must_use]
pub fn public_diff(&self) -> HashMap<AccountId, Account> {
self.0.public_diff.clone()
}
pub(crate) fn into_state_diff(self) -> StateDiff {
self.0
}
}
#[derive(Debug)]
struct CallerData {
program_id: Option<ProgramId>,
authorized_accounts: HashSet<AccountId>,
}
fn authenticate_public_transaction_signers(
tx: &PublicTransaction,
state: &V03State,
) -> Result<Vec<AccountId>, LeeError> {
let message = tx.message();
let witness_set = tx.witness_set();
ensure!(
message.nonces.len() == witness_set.signatures_and_public_keys.len(),
LeeError::InvalidInput(
"Mismatch between number of nonces and signatures/public keys".into(),
)
);
ensure!(
witness_set.is_valid_for(message),
LeeError::InvalidInput("Invalid signature for given message and public key".into())
);
let signer_account_ids = tx.signer_account_ids();
for (account_id, nonce) in signer_account_ids.iter().zip(&message.nonces) {
let current_nonce = state.get_account_by_id(*account_id).nonce;
ensure!(
current_nonce == *nonce,
LeeError::InvalidInput("Nonce mismatch".into())
);
}
Ok(signer_account_ids)
}
fn check_privacy_preserving_circuit_proof_is_valid(
proof: &Proof,
public_pre_states: &[AccountWithMetadata],
message: &Message,
) -> Result<(), LeeError> {
let output = PrivacyPreservingCircuitOutput {
public_pre_states: public_pre_states.to_vec(),
public_post_states: message.public_post_states.clone(),
encrypted_private_post_states: message.encrypted_private_post_states.clone(),
new_commitments: message.new_commitments.clone(),
new_nullifiers: message.new_nullifiers.clone(),
block_validity_window: message.block_validity_window,
timestamp_validity_window: message.timestamp_validity_window,
};
proof
.is_valid_for(&output)
.then_some(())
.ok_or(LeeError::InvalidPrivacyPreservingProof)
}
fn n_unique<T: Eq + Hash>(data: &[T]) -> usize {
let set: HashSet<&T> = data.iter().collect();
set.len()
}
#[cfg(test)]
mod tests;

533
lee/state_machine/src/validated_state_diff/tests.rs Normal file
View File

@ -0,0 +1,533 @@
use std::collections::HashMap;
use lee_core::account::{Account, AccountId, Nonce};
use crate::{
PrivateKey, PublicKey, V03State,
error::{InvalidProgramBehaviorError, LeeError},
program::Program,
public_transaction::{Message, WitnessSet},
validated_state_diff::ValidatedStateDiff,
};
fn public_state_from_balances(initial_data: &[(AccountId, u128)]) -> HashMap<AccountId, Account> {
initial_data
.iter()
.copied()
.map(|(account_id, balance)| {
(
account_id,
Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance,
..Account::default()
},
)
})
.collect()
}
#[test]
fn public_diff_reflects_a_successful_transfer() {
// A successful native transfer must record the debited sender in
// `public_diff()`. Catches the mutation that replaces `public_diff` with
// `HashMap::new()` (which would hide every account change).
let from_key = PrivateKey::try_new([1_u8; 32]).unwrap();
let from = AccountId::from(&PublicKey::new_from_private_key(&from_key));
let to_key = PrivateKey::try_new([2_u8; 32]).unwrap();
let to = AccountId::from(&PublicKey::new_from_private_key(&to_key));
let state = V03State::new()
.with_public_accounts(public_state_from_balances(&[(from, 100)]))
.with_programs(std::iter::once(
crate::test_methods::simple_balance_transfer(),
));
let program_id = crate::test_methods::simple_balance_transfer().id();
let message =
Message::try_new(program_id, vec![from, to], vec![Nonce(0), Nonce(0)], 5_u128).unwrap();
let witness_set = WitnessSet::for_message(&message, &[&from_key, &to_key]);
let tx = crate::PublicTransaction::new(message, witness_set);
let diff = ValidatedStateDiff::from_public_transaction(&tx, &state, 1, 0)
.expect("a valid native transfer must validate");
let public_diff = diff.public_diff();
assert!(
public_diff.contains_key(&from),
"public_diff must contain the debited sender",
);
assert_eq!(
public_diff[&from].balance, 95,
"sender balance in the diff must reflect the debit",
);
}
/// Privacy-path version of the authorization-injection attack. The test passes when the
/// attack is rejected and the victim's balance is left untouched.
///
/// `execute_and_prove` succeeds because each inner receipt is individually valid and the
/// outer circuit faithfully commits whatever the attacker's program output says, including
/// `victim(is_authorized=true)`. The circuit has no access to chain state and cannot know
/// the victim never signed.
///
/// The host-side validator is what catches the attack: it independently reconstructs
/// `public_pre_states` from chain state using `signer_account_ids.contains(victim_id) = false`,
/// so it expects `victim(is_authorized=false)`. The committed journal and the reconstructed
/// expected output diverge, `receipt.verify` fails, and `from_privacy_preserving_transaction`
/// returns an error before any state is applied.
#[test]
fn privacy_malicious_programs_cannot_drain_public_victim() {
use lee_core::{
Commitment, EncryptedAccountData, InputAccountIdentity, SharedSecretKey,
account::{Account, AccountWithMetadata},
};
use crate::{
PrivacyPreservingTransaction,
privacy_preserving_transaction::{
circuit::{ProgramWithDependencies, execute_and_prove},
message::Message,
witness_set::WitnessSet,
},
state::{CommitmentSet, tests::test_private_account_keys_1},
};
type InjectorInstruction = (
lee_core::program::ProgramId, // p2_id
lee_core::program::ProgramId, // simple_balance_transfer_id
[u8; 32], // victim_id_raw
u128, // victim_balance
u128, // victim_nonce
lee_core::program::ProgramId, // victim_program_owner
[u8; 32], // recipient_id_raw
u128, // amount
);
// Attacker controls a private account.
let attacker_keys = test_private_account_keys_1();
let attacker_id = AccountId::for_regular_private_account(&attacker_keys.npk(), 0);
let (attacker_ssk, attacker_epk) = SharedSecretKey::encapsulate(&attacker_keys.vpk());
let victim_id = AccountId::new([20_u8; 32]);
let recipient_id = AccountId::new([42_u8; 32]);
let victim_balance = 5_000_u128;
// genesis sets program_owner = simple_balance_transfer_program.id() on all accounts.
let state = V03State::new()
.with_public_accounts(public_state_from_balances(&[
(victim_id, victim_balance),
(recipient_id, 0),
]))
.with_programs([
crate::test_methods::simple_balance_transfer(),
crate::test_methods::malicious_injector(),
crate::test_methods::malicious_launderer(),
]);
// Build attacker's private account and its local commitment tree.
let attacker_account = Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: 100,
..Account::default()
};
let attacker_commitment = Commitment::new(&attacker_id, &attacker_account);
let mut commitment_set = CommitmentSet::with_capacity(1);
commitment_set.extend(std::slice::from_ref(&attacker_commitment));
let membership_proof = commitment_set
.get_proof_for(&attacker_commitment)
.expect("attacker commitment must be in the set");
let attacker_pre = AccountWithMetadata::new(attacker_account, true, attacker_id);
let victim_account = state.get_account_by_id(victim_id);
let instruction: InjectorInstruction = (
crate::test_methods::malicious_launderer().id(),
crate::test_methods::simple_balance_transfer().id(),
*victim_id.value(),
victim_account.balance,
victim_account.nonce.0,
victim_account.program_owner,
*recipient_id.value(),
victim_balance,
);
let instruction_data = Program::serialize_instruction(instruction).unwrap();
let p2 = crate::test_methods::malicious_launderer();
let at = crate::test_methods::simple_balance_transfer();
let program_with_deps = ProgramWithDependencies::new(
crate::test_methods::malicious_injector(),
[(p2.id(), p2), (at.id(), at)].into(),
);
// account_identities order must match self.pre_states as built by the circuit:
// [0] attacker — first seen in P1's program_output.pre_states
// [1] victim — first seen in simple_balance_transfer's program_output.pre_states
// [2] recipient — first seen in simple_balance_transfer's program_output.pre_states
let account_identities = vec![
InputAccountIdentity::PrivateAuthorizedUpdate {
epk: attacker_epk,
view_tag: EncryptedAccountData::compute_view_tag(
&attacker_keys.npk(),
&attacker_keys.vpk(),
),
ssk: attacker_ssk,
nsk: attacker_keys.nsk,
membership_proof,
identifier: 0,
},
InputAccountIdentity::Public, // victim
InputAccountIdentity::Public, // recipient
];
// execute_and_prove succeeds: all inner receipts are valid.
// The outer circuit commits victim(is_authorized=true) to its journal.
let (circuit_output, proof) = execute_and_prove(
vec![attacker_pre],
instruction_data,
account_identities,
&program_with_deps,
)
.expect("execute_and_prove should succeed \u{2014} the programs execute correctly");
// public_account_ids lists the Public entries from account_identities, in order.
// The single ciphertext belongs to attacker's private account update.
let message = Message::try_from_circuit_output(
vec![victim_id, recipient_id],
vec![], // no public signers, no nonces
circuit_output,
)
.unwrap();
let witness_set = WitnessSet::for_message(&message, proof, &[]); // no signatures
let tx = PrivacyPreservingTransaction::new(message, witness_set);
let result = ValidatedStateDiff::from_privacy_preserving_transaction(&tx, &state, 1, 0);
assert!(
matches!(result, Err(LeeError::InvalidPrivacyPreservingProof)),
"attack privacy transaction should be rejected with InvalidPrivacyPreservingProof"
);
assert_eq!(state.get_account_by_id(victim_id).balance, victim_balance);
assert_eq!(state.get_account_by_id(recipient_id).balance, 0);
}
/// Private-victim variant of the authorization-injection attack. The test passes when the
/// attack is rejected and the recipient's balance remains zero.
///
/// After the circuit's Vacant branch accepts the injected `victim(is_authorized=true)`
/// verbatim, the attacker must choose how to declare the victim in `account_identities`.
/// There are two routes, both closed:
///
/// - **mask=1 (`PrivateAuthorizedUpdate`)**: the circuit derives `account_id =
/// AccountId::for_regular_private_account(&npk_from(nsk), identifier)` and asserts it matches
/// `pre_state.account_id`. Passing this check requires the victim's `nsk`, which the attacker
/// does not have. `execute_and_prove` panics inside the ZKVM and no proof is produced.
///
/// - **mask=0 (`Public`)**: the circuit places the account in `public_pre_states` and
/// `execute_and_prove` succeeds. The host-side validator then reconstructs `public_pre_states`
/// from chain state; `state.get_account_by_id(victim_id)` returns the default account (balance=0)
/// because the victim has no public state entry. The committed journal and the reconstructed
/// expected output diverge, `receipt.verify` fails, and `from_privacy_preserving_transaction`
/// returns an error before any state is applied. This test exercises this route.
#[test]
fn privacy_malicious_programs_cannot_drain_private_victim() {
use lee_core::{
Commitment, EncryptedAccountData, InputAccountIdentity, SharedSecretKey,
account::{Account, AccountWithMetadata},
};
use crate::{
PrivacyPreservingTransaction,
privacy_preserving_transaction::{
circuit::{ProgramWithDependencies, execute_and_prove},
message::Message,
witness_set::WitnessSet,
},
state::{
CommitmentSet,
tests::{test_private_account_keys_1, test_private_account_keys_2},
},
};
type InjectorInstruction = (
lee_core::program::ProgramId, // p2_id
lee_core::program::ProgramId, // simple_balance_transfer_id
[u8; 32], // victim_id_raw
u128, // victim_balance
u128, // victim_nonce
lee_core::program::ProgramId, // victim_program_owner
[u8; 32], // recipient_id_raw
u128, // amount
);
// Attacker controls a private account.
let attacker_keys = test_private_account_keys_1();
let attacker_id = AccountId::for_regular_private_account(&attacker_keys.npk(), 0);
let (attacker_ssk, attacker_epk) = SharedSecretKey::encapsulate(&attacker_keys.vpk());
// Victim is a private account — not registered in public chain state.
let victim_keys = test_private_account_keys_2();
let victim_id = AccountId::for_regular_private_account(&victim_keys.npk(), 0);
let victim_balance = 5_000_u128;
let recipient_id = AccountId::new([42_u8; 32]);
// Victim has no public state entry; only recipient is registered at genesis.
let state = V03State::new()
.with_public_accounts(public_state_from_balances(&[(recipient_id, 0)]))
.with_programs([
crate::test_methods::simple_balance_transfer(),
crate::test_methods::malicious_injector(),
crate::test_methods::malicious_launderer(),
]);
// Build attacker's private account and its local commitment tree.
let attacker_account = Account {
program_owner: crate::test_methods::simple_balance_transfer().id(),
balance: 100,
..Account::default()
};
let attacker_commitment = Commitment::new(&attacker_id, &attacker_account);
let mut commitment_set = CommitmentSet::with_capacity(1);
commitment_set.extend(std::slice::from_ref(&attacker_commitment));
let membership_proof = commitment_set
.get_proof_for(&attacker_commitment)
.expect("attacker commitment must be in the set");
let attacker_pre = AccountWithMetadata::new(attacker_account, true, attacker_id);
// The attacker supplies the victim's account data directly — it cannot be read from
// public state. The injected balance and program_owner allow simple_balance_transfer
// to succeed inside the circuit, which has no access to chain state and cannot detect
// that these values are fabricated.
let instruction: InjectorInstruction = (
crate::test_methods::malicious_launderer().id(),
crate::test_methods::simple_balance_transfer().id(),
*victim_id.value(),
victim_balance,
0_u128, // nonce
crate::test_methods::simple_balance_transfer().id(), // program_owner
*recipient_id.value(),
victim_balance,
);
let instruction_data = Program::serialize_instruction(instruction).unwrap();
let p2 = crate::test_methods::malicious_launderer();
let at = crate::test_methods::simple_balance_transfer();
let program_with_deps = ProgramWithDependencies::new(
crate::test_methods::malicious_injector(),
[(p2.id(), p2), (at.id(), at)].into(),
);
// account_identities order must match self.pre_states as built by the circuit:
// [0] attacker — first seen in P1's program_output.pre_states
// [1] victim — first seen in simple_balance_transfer's program_output.pre_states
// [2] recipient — first seen in simple_balance_transfer's program_output.pre_states
//
// Victim is marked Public: the attacker has no nsk for the victim's private account,
// so PrivateAuthorizedUpdate is not an option.
let account_identities = vec![
InputAccountIdentity::PrivateAuthorizedUpdate {
epk: attacker_epk,
view_tag: EncryptedAccountData::compute_view_tag(
&attacker_keys.npk(),
&attacker_keys.vpk(),
),
ssk: attacker_ssk,
nsk: attacker_keys.nsk,
membership_proof,
identifier: 0,
},
InputAccountIdentity::Public, // victim — attacker lacks victim's nsk
InputAccountIdentity::Public, // recipient
];
// execute_and_prove succeeds: simple_balance_transfer runs against the injected
// victim(balance=5000, is_authorized=true) and produces valid inner receipts.
// The outer circuit commits victim(is_authorized=true) to public_pre_states.
let (circuit_output, proof) = execute_and_prove(
vec![attacker_pre],
instruction_data,
account_identities,
&program_with_deps,
)
.expect("execute_and_prove should succeed \u{2014} the programs execute correctly");
// public_account_ids lists the Public entries from account_identities, in order.
// The single ciphertext belongs to attacker's private account update.
let message = Message::try_from_circuit_output(
vec![victim_id, recipient_id],
vec![], // no public signers, no nonces
circuit_output,
)
.unwrap();
let witness_set = WitnessSet::for_message(&message, proof, &[]); // no signatures
let tx = PrivacyPreservingTransaction::new(message, witness_set);
let result = ValidatedStateDiff::from_privacy_preserving_transaction(&tx, &state, 1, 0);
assert!(
matches!(result, Err(LeeError::InvalidPrivacyPreservingProof)),
"attack on private victim should be rejected with InvalidPrivacyPreservingProof"
);
// Victim has no public balance to check; confirming the recipient received nothing
// is sufficient to show no funds moved.
assert_eq!(state.get_account_by_id(recipient_id).balance, 0);
}
/// Two malicious programs (injector + launderer) attempt to drain a victim's balance
/// without the victim signing anything. The test passes when the attack is rejected
/// and the victim's balance is left untouched.
///
/// Attack flow:
/// Transaction (attacker signs) → P1 (`malicious_injector`)
/// → injects `victim(is_authorized=true)` into chained-call `pre_states` for P2
/// P2 (`malicious_launderer`)
/// → outputs empty pre/post states, forwarding the forged flag to `simple_balance_transfer`
/// → if `authorized_accounts` were built from the injected `pre_states`,
/// `{victim}.contains(victim)` would pass and the transfer would execute.
///
/// The validator must reject this: `authorized_accounts` must be derived from the
/// parent program's own validated `program_output.pre_states`, not from the chained-call
/// input, so a forged `is_authorized=true` flag is never trusted.
#[test]
fn malicious_programs_cannot_drain_victim_without_signature() {
// p2_id, simple_balance_transfer_id, victim_id_raw, victim_balance, victim_nonce,
// victim_program_owner, recipient_id_raw, amount.
// Primitives only — AccountId/Account cannot round-trip through instruction_data
// via risc0_zkvm::serde (SerializeDisplay issue).
type InjectorInstruction = (
lee_core::program::ProgramId, // p2_id
lee_core::program::ProgramId, // simple_balance_transfer_id
[u8; 32], // victim_id_raw
u128, // victim_balance
u128, // victim_nonce
lee_core::program::ProgramId, // victim_program_owner
[u8; 32], // recipient_id_raw
u128, // amount
);
let attacker_key = PrivateKey::try_new([10; 32]).unwrap();
let attacker_id = AccountId::from(&PublicKey::new_from_private_key(&attacker_key));
let victim_key = PrivateKey::try_new([20; 32]).unwrap();
let victim_id = AccountId::from(&PublicKey::new_from_private_key(&victim_key));
let recipient_id = AccountId::new([42; 32]);
let victim_balance = 5_000_u128;
let state = V03State::new()
.with_public_accounts(public_state_from_balances(&[
(attacker_id, 100),
(victim_id, victim_balance),
(recipient_id, 0),
]))
.with_programs([
crate::test_methods::simple_balance_transfer(),
crate::test_methods::malicious_injector(),
crate::test_methods::malicious_launderer(),
]);
// Read victim state from chain, exactly as the attacker would.
let victim_account = state.get_account_by_id(victim_id);
let instruction: InjectorInstruction = (
crate::test_methods::malicious_launderer().id(),
crate::test_methods::simple_balance_transfer().id(),
*victim_id.value(),
victim_account.balance,
victim_account.nonce.0,
victim_account.program_owner,
*recipient_id.value(),
victim_balance,
);
let message = Message::try_new(
crate::test_methods::malicious_injector().id(),
vec![attacker_id],
vec![Nonce(0)],
instruction,
)
.unwrap();
let witness_set = WitnessSet::for_message(&message, &[&attacker_key]);
let tx = crate::PublicTransaction::new(message, witness_set);
let result = ValidatedStateDiff::from_public_transaction(&tx, &state, 1, 0);
assert!(
matches!(
result,
Err(LeeError::InvalidProgramBehavior(
InvalidProgramBehaviorError::InvalidAccountAuthorization { account_id }
)) if account_id == victim_id
),
"attack transaction should be rejected with InvalidAccountAuthorization for the victim"
);
// Confirm the victim's balance is untouched.
let victim_balance_after = state.get_account_by_id(victim_id).balance;
let recipient_balance_after = state.get_account_by_id(recipient_id).balance;
assert_eq!(
victim_balance_after, victim_balance,
"victim balance should be unchanged"
);
assert_eq!(
recipient_balance_after, 0,
"recipient should receive nothing"
);
}
/// Regression test: a `PrivacyPreservingTransaction` carrying a structurally invalid
/// proof must be rejected with a clean `Err`.
#[test]
fn privacy_garbage_proof_is_rejected() {
use lee_core::{
Commitment,
account::Account,
program::{BlockValidityWindow, TimestampValidityWindow},
};
use crate::{
PrivacyPreservingTransaction,
privacy_preserving_transaction::{
circuit::Proof, message::Message, witness_set::WitnessSet,
},
};
let state = V03State::new();
// Minimal message that passes every check up to proof verification: a single
// commitment satisfies the non-empty requirement, no signers makes the
// nonce/signature checks vacuously true, and unbounded validity windows are valid
// for any block/timestamp.
let account_id = AccountId::from(&PublicKey::new_from_private_key(
&PrivateKey::try_new([1_u8; 32]).unwrap(),
));
let commitment = Commitment::new(&account_id, &Account::default());
let message = Message {
public_account_ids: vec![],
nonces: vec![],
public_post_states: vec![],
encrypted_private_post_states: vec![],
new_commitments: vec![commitment],
new_nullifiers: vec![],
block_validity_window: BlockValidityWindow::new_unbounded(),
timestamp_validity_window: TimestampValidityWindow::new_unbounded(),
};
// Garbage proof bytes: not a valid borsh-encoded `InnerReceipt`.
let garbage_proof = Proof::from_inner(vec![0xff_u8; 64]);
let witness_set = WitnessSet::for_message(&message, garbage_proof, &[]);
let tx = PrivacyPreservingTransaction::new(message, witness_set);
let result = ValidatedStateDiff::from_privacy_preserving_transaction(&tx, &state, 1, 0);
match result {
Err(LeeError::InvalidPrivacyPreservingProof) => {}
Err(other) => panic!("expected InvalidPrivacyPreservingProof, got {other:?}"),
Ok(_) => panic!("garbage proof was accepted instead of rejected"),
}
}