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3.1.4 Further document hash_to_F which may collide

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This commit is contained in:
Luke Parker
2023-02-23 01:03:53 -05:00
parent cb4ce5e354
commit 686a5ee364
3 changed files with 34 additions and 5 deletions
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14
crypto/ciphersuite/src/kp256.rs
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@@ -20,8 +20,6 @@ macro_rules! kp_curve {
$Ciphersuite: ident,
$ID: literal
) => {
#[derive(Clone, Copy, PartialEq, Eq, Debug, Zeroize)]
pub struct $Ciphersuite;
impl Ciphersuite for $Ciphersuite {
type F = $lib::Scalar;
type G = $lib::ProjectivePoint;
@@ -105,6 +103,12 @@ fn test_oversize_dst<C: Ciphersuite>() {
assert_eq!(C::hash_to_F(&oversize_dst, &[]), C::hash_to_F(&actual_dst, &[]));
}
/// Ciphersuite for Secp256k1.
///
/// hash_to_F is implemented via the IETF draft for hash to curve's hash_to_field (v16).
#[cfg(feature = "secp256k1")]
#[derive(Clone, Copy, PartialEq, Eq, Debug, Zeroize)]
pub struct Secp256k1;
#[cfg(feature = "secp256k1")]
kp_curve!("secp256k1", k256, Secp256k1, b"secp256k1");
#[cfg(feature = "secp256k1")]
@@ -137,6 +141,12 @@ fn test_secp256k1() {
test_oversize_dst::<Secp256k1>();
}
/// Ciphersuite for P-256.
///
/// hash_to_F is implemented via the IETF draft for hash to curve's hash_to_field (v16).
#[cfg(feature = "p256")]
#[derive(Clone, Copy, PartialEq, Eq, Debug, Zeroize)]
pub struct P256;
#[cfg(feature = "p256")]
kp_curve!("p256", p256, P256, b"P-256");
#[cfg(feature = "p256")]