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circom-compat-ffi
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don't store cfg in circom context

This commit is contained in:
Dmitriy Ryajov 2024-01-26 12:38:08 -06:00
parent 337a5113ed
commit 06417c3e47
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GPG Key ID: DA8C680CE7C657A4
1 changed files with 8 additions and 10 deletions
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18
src/ffi.rs
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@ -33,7 +33,6 @@ struct CircomBn254 {
#[derive(Debug, Clone)]
struct CircomCompatCtx {
circom: *mut CircomBn254,
cfg: *mut CircomBn254Cfg,
rng: ThreadRng,
_marker: core::marker::PhantomData<(*mut CircomCompatCtx, core::marker::PhantomPinned)>,
}
@ -122,7 +121,6 @@ pub unsafe extern "C" fn init_circom_compat(
let circom_compat_ctx = CircomCompatCtx {
circom: Box::into_raw(Box::new(circom_bn254)),
cfg: cfg_ptr,
rng: rng,
_marker: core::marker::PhantomData,
};
@ -203,13 +201,13 @@ unsafe fn to_circom(ctx_ptr: *mut CircomCompatCtx) -> *mut CircomBn254 {
#[no_mangle]
#[allow(private_interfaces)]
pub unsafe extern "C" fn prove_circuit(
cfg_ptr: *mut CircomBn254Cfg,
ctx_ptr: *mut CircomCompatCtx,
proof_ptr: &mut *mut Proof, // inputs_bytes_ptr: &mut *mut Buffer,
) -> i32 {
let result = catch_unwind(AssertUnwindSafe(|| {
let ctx: &mut CircomCompatCtx = &mut *ctx_ptr;
let circom = &mut *to_circom(ctx_ptr);
let proving_key = (*ctx.cfg).proving_key;
let proving_key = (*(*cfg_ptr).proving_key).clone();
let rng = &mut (*ctx_ptr).rng;
let circuit = (*circom.builder)
@ -218,7 +216,7 @@ pub unsafe extern "C" fn prove_circuit(
.map_err(|_| ERR_CIRCOM_BUILDER)
.unwrap();
let circom_proof = GrothBn::prove(&*proving_key, circuit, rng)
let circom_proof = GrothBn::prove(&proving_key, circuit, rng)
.map_err(|_| ERR_MAKING_PROOF)
.unwrap();
@ -255,12 +253,12 @@ pub unsafe extern "C" fn get_pub_inputs(
#[no_mangle]
#[allow(private_interfaces)]
pub unsafe extern "C" fn get_verifying_key(
ctx_ptr: *mut CircomCompatCtx,
cfg_ptr: *mut CircomBn254Cfg,
vk_ptr: &mut *mut VerifyingKey, // inputs_bytes_ptr: &mut *mut Buffer,
) -> i32 {
let result = catch_unwind(AssertUnwindSafe(|| {
let ctx = &mut *ctx_ptr;
let proving_key = &(*(*ctx.cfg).proving_key);
let ctx = &mut *cfg_ptr;
let proving_key = &(*(*ctx).proving_key);
let vk = prepare_verifying_key(&proving_key.vk).vk;
*vk_ptr = Box::leak(Box::new((&vk).into()));
@ -388,10 +386,10 @@ mod test {
assert!(get_pub_inputs(ctx_ptr, &mut inputs_ptr) == ERR_OK);
assert!(inputs_ptr != std::ptr::null_mut());
assert!(prove_circuit(ctx_ptr, &mut proof_ptr) == ERR_OK);
assert!(prove_circuit(cfg_ptr, ctx_ptr, &mut proof_ptr) == ERR_OK);
assert!(proof_ptr != std::ptr::null_mut());
assert!(get_verifying_key(ctx_ptr, &mut vk_ptr) == ERR_OK);
assert!(get_verifying_key(cfg_ptr, &mut vk_ptr) == ERR_OK);
assert!(vk_ptr != std::ptr::null_mut());
assert!(verify_circuit(&(*proof_ptr), &(*inputs_ptr), &(*vk_ptr)) == ERR_OK);