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fixed edge case

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This commit is contained in:
jonesmarvin8 2026-01-27 16:19:56 -05:00
parent c81ce363c1
commit 1dd0f16a5c
2 changed files with 16 additions and 21 deletions
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1
Cargo.lock generated
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@ -2915,6 +2915,7 @@ dependencies = [
"nssa", "nssa",
"nssa_core", "nssa_core",
"rand 0.8.5", "rand 0.8.5",
"secp256k1",
"serde", "serde",
"sha2", "sha2",
"thiserror 2.0.17", "thiserror 2.0.17",

36
key_protocol/src/key_management/key_tree/keys_public.rs
View File

@ -17,17 +17,17 @@ impl ChildKeysPublic {
let mut hash_input = vec![]; let mut hash_input = vec![];
match ((2u32).pow(31)).cmp(&cci) { match ((2u32).pow(31)).cmp(&cci) {
// Harden // Non-harden
std::cmp::Ordering::Less => { std::cmp::Ordering::Greater => {
hash_input.extend_from_slice(self.csk.value()); hash_input.extend_from_slice(self.cpk.value());
hash_input.extend_from_slice(&(cci).to_le_bytes()); hash_input.extend_from_slice(&cci.to_le_bytes());
hmac_sha512::HMAC::mac(hash_input, self.ccc) hmac_sha512::HMAC::mac(hash_input, self.ccc)
} }
// Non-harden // Harden
_ => { _ => {
hash_input.extend_from_slice(self.cpk.value()); hash_input.extend_from_slice(self.csk.value());
hash_input.extend_from_slice(&cci.to_le_bytes()); hash_input.extend_from_slice(&(cci).to_le_bytes());
hmac_sha512::HMAC::mac(hash_input, self.ccc) hmac_sha512::HMAC::mac(hash_input, self.ccc)
} }
@ -223,7 +223,7 @@ mod tests {
} }
#[test] #[test]
fn test_edge_case_child_keys_generation_2_power_32() { fn test_edge_case_child_keys_generation_2_power_31() {
let seed = [ let seed = [
88, 189, 37, 237, 199, 125, 151, 226, 69, 153, 165, 113, 191, 69, 188, 221, 9, 34, 173, 88, 189, 37, 237, 199, 125, 151, 226, 69, 153, 165, 113, 191, 69, 188, 221, 9, 34, 173,
134, 61, 109, 34, 103, 121, 39, 237, 14, 107, 194, 24, 194, 191, 14, 237, 185, 12, 87, 134, 61, 109, 34, 103, 121, 39, 237, 14, 107, 194, 24, 194, 191, 14, 237, 185, 12, 87,
@ -231,29 +231,23 @@ mod tests {
187, 148, 92, 44, 253, 210, 37, 187, 148, 92, 44, 253, 210, 37,
]; ];
let root_keys = ChildKeysPublic::root(seed); let root_keys = ChildKeysPublic::root(seed);
let cci = (2u32).pow(32); //equivant to 0, thus non-harden. let cci = (2u32).pow(31); //equivant to 0, thus non-harden.
let child_keys = ChildKeysPublic::nth_child(&root_keys, cci); let child_keys = ChildKeysPublic::nth_child(&root_keys, cci);
print!(
"{} {}",
child_keys.csk.value()[0],
child_keys.csk.value()[1]
);
let expected_ccc = [ let expected_ccc = [
210, 59, 14, 158, 52, 215, 216, 93, 160, 246, 178, 122, 211, 252, 0, 33, 248, 197, 242, 101, 15, 69, 152, 144, 22, 105, 89, 175, 21, 13, 50, 160, 167, 93, 80, 94, 99, 192,
243, 78, 210, 67, 55, 212, 147, 3, 12, 80, 132, 245, 139, 252, 1, 126, 196, 217, 149, 164, 60, 75, 237, 90, 104, 83,
]; ];
let expected_csk: PrivateKey = PrivateKey::try_new([ let expected_csk: PrivateKey = PrivateKey::try_new([
167, 114, 72, 184, 108, 61, 60, 219, 210, 140, 142, 224, 253, 204, 175, 165, 147, 135, 46, 196, 131, 199, 190, 180, 250, 222, 41, 188, 221, 156, 255, 239, 251, 207, 239, 202,
43, 42, 9, 224, 164, 196, 179, 178, 169, 162, 41, 56, 161, 146, 166, 216, 107, 236, 195, 48, 167, 69, 97, 13, 132, 117, 76, 89,
]) ])
.unwrap(); .unwrap();
let expected_cpk: PublicKey = PublicKey::try_new([ let expected_cpk: PublicKey = PublicKey::try_new([
127, 243, 89, 67, 37, 211, 15, 39, 31, 110, 175, 89, 9, 102, 209, 99, 105, 194, 172, 8, 93, 151, 154, 238, 175, 198, 53, 146, 255, 43, 37, 52, 214, 165, 69, 161, 38, 20, 68,
194, 11, 207, 250, 1, 9, 6, 173, 49, 155, 130, 29, 166, 143, 80, 149, 216, 124, 203, 240, 114, 168, 111, 33, 83,
]) ])
.unwrap(); .unwrap();