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Merging Version 09 changes into main (#60)

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* Syncing new test vectors and base mode

* Working set of test vectors for VOPRF mode

* Adding POPRF

* POPRF test vectors in sync

* Address review (#59)

Co-authored-by: daxpedda <[email protected]>
This commit is contained in:
Kevin Lewi
2022-02-13 04:00:11 -08:00
committed by GitHub
co-authored by daxpedda
parent 9eee936140
commit f8e0600b22
15 changed files with 3722 additions and 2254 deletions
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src/group/elliptic_curve.rs
+4 -13
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@@ -13,14 +13,11 @@ use elliptic_curve::sec1::{FromEncodedPoint, ModulusSize, ToEncodedPoint};
use elliptic_curve::{
AffinePoint, Field, FieldSize, Group as _, ProjectivePoint, PublicKey, Scalar, SecretKey,
};
use generic_array::sequence::Concat;
use generic_array::typenum::{IsLess, IsLessOrEqual, U256};
use generic_array::GenericArray;
use rand_core::{CryptoRng, RngCore};
use super::Group;
use crate::group::{STR_HASH_TO_GROUP, STR_HASH_TO_SCALAR};
use crate::voprf::{self, Mode};
use crate::{CipherSuite, Error, InternalError, Result};
impl<C> Group for C
@@ -43,32 +40,26 @@ where
// https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-hash-to-curve-11#section-3
fn hash_to_curve<CS: CipherSuite>(
input: &[&[u8]],
mode: Mode,
dst: &[u8],
) -> Result<Self::Elem, InternalError>
where
<CS::Hash as OutputSizeUser>::OutputSize:
IsLess<U256> + IsLessOrEqual<<CS::Hash as BlockSizeUser>::BlockSize>,
{
let dst =
GenericArray::from(STR_HASH_TO_GROUP).concat(voprf::get_context_string::<CS>(mode));
Self::hash_from_bytes::<ExpandMsgXmd<CS::Hash>>(input, &dst)
Self::hash_from_bytes::<ExpandMsgXmd<CS::Hash>>(input, dst)
.map_err(|_| InternalError::Input)
}
// Implements the `HashToScalar()` function
fn hash_to_scalar<CS: CipherSuite>(
input: &[&[u8]],
mode: Mode,
dst: &[u8],
) -> Result<Self::Scalar, InternalError>
where
<CS::Hash as OutputSizeUser>::OutputSize:
IsLess<U256> + IsLessOrEqual<<CS::Hash as BlockSizeUser>::BlockSize>,
{
let dst =
GenericArray::from(STR_HASH_TO_SCALAR).concat(voprf::get_context_string::<CS>(mode));
<Self as GroupDigest>::hash_to_scalar::<ExpandMsgXmd<CS::Hash>>(input, &dst)
<Self as GroupDigest>::hash_to_scalar::<ExpandMsgXmd<CS::Hash>>(input, dst)
.map_err(|_| InternalError::Input)
}