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Correct discrepancies with the IETF draft

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While all the transcript/extension code works as expected, which means, 
they don't cause any conflicts, n was still capped at u64::MAX at 
creation when it needs to be u16. Furthermore, participant index and 
scalars/points were little endian instead of big endian/curve dependent.
This commit is contained in:
Luke Parker
2022-05-06 07:49:18 -04:00
parent b443747994
commit 3dab26cd94
7 changed files with 32 additions and 35 deletions
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14
crypto/frost/tests/common.rs
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@@ -61,11 +61,9 @@ impl Curve for Secp256k1 {
33
}
fn F_from_le_slice(slice: &[u8]) -> Result<Self::F, CurveError> {
let mut bytes: [u8; 32] = slice.try_into().map_err(
|_| CurveError::InvalidLength(32, slice.len())
)?;
bytes.reverse();
fn F_from_slice(slice: &[u8]) -> Result<Self::F, CurveError> {
let bytes: [u8; 32] = slice.try_into()
.map_err(|_| CurveError::InvalidLength(32, slice.len()))?;
let scalar = Scalar::from_repr(bytes.into());
if scalar.is_none().unwrap_u8() == 1 {
Err(CurveError::InvalidScalar)?;
@@ -81,10 +79,8 @@ impl Curve for Secp256k1 {
Ok(point.unwrap())
}
fn F_to_le_bytes(f: &Self::F) -> Vec<u8> {
let mut res: [u8; 32] = f.to_bytes().into();
res.reverse();
res.to_vec()
fn F_to_bytes(f: &Self::F) -> Vec<u8> {
(&f.to_bytes()).to_vec()
}
fn G_to_bytes(g: &Self::G) -> Vec<u8> {