vexahub/voprf-vx
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General improvements (#65)

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* Relax `hash_to_scalar` and `hash_to_group` bounds

* Rename `util` to `common` and shuffle some stuff around

* Don't generate unnecessary public key

* Simplify 'elliptic-curve` serializing element implementation

* Fix new Clippy 1.59 warnings

* Simplify `Ristretto255::random_scalar` implementation

* Update `derive-where`

* Fix panic during Ristretto255 deserialization

* Remove iteration during de/serialization
This commit is contained in:
daxpedda
2022-04-01 12:18:32 -07:00
committed by GitHub
parent a366a14125
commit 1a61401272
11 changed files with 231 additions and 244 deletions
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src/oprf.rs
+8 -9
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@@ -16,12 +16,12 @@ use generic_array::typenum::{IsLess, IsLessOrEqual, Unsigned, U256};
use generic_array::GenericArray;
use rand_core::{CryptoRng, RngCore};
use crate::common::{
derive_key, deterministic_blind_unchecked, i2osp_2, BlindedElement, EvaluationElement, Mode,
STR_FINALIZE,
};
#[cfg(feature = "serde")]
use crate::serialization::serde::Scalar;
use crate::util::{
derive_keypair, deterministic_blind_unchecked, i2osp_2, BlindedElement, EvaluationElement,
Mode, STR_FINALIZE,
};
use crate::{CipherSuite, Error, Group, Result};
///////////////
@@ -189,7 +189,7 @@ where
/// then `u16::MAX - 3`.
/// - [`Error::Protocol`] if the protocol fails and can't be completed.
pub fn new_from_seed(seed: &[u8], info: &[u8]) -> Result<Self> {
let (sk, _) = derive_keypair::<CS>(seed, info, Mode::Oprf)?;
let sk = derive_key::<CS>(seed, info, Mode::Oprf)?;
Ok(Self { sk })
}
@@ -279,8 +279,7 @@ mod tests {
use rand::rngs::OsRng;
use super::*;
use crate::group::STR_HASH_TO_GROUP;
use crate::util::create_context_string;
use crate::common::{create_context_string, STR_HASH_TO_GROUP};
use crate::Group;
fn prf<CS: CipherSuite>(
@@ -294,7 +293,7 @@ mod tests {
IsLess<U256> + IsLessOrEqual<<CS::Hash as BlockSizeUser>::BlockSize>,
{
let dst = GenericArray::from(STR_HASH_TO_GROUP).concat(create_context_string::<CS>(mode));
let point = CS::Group::hash_to_curve::<CS>(&[input], &dst).unwrap();
let point = CS::Group::hash_to_curve::<CS::Hash>(&[input], &dst).unwrap();
let res = point * &key;
@@ -335,7 +334,7 @@ mod tests {
let dst =
GenericArray::from(STR_HASH_TO_GROUP).concat(create_context_string::<CS>(Mode::Oprf));
let point = CS::Group::hash_to_curve::<CS>(&[&input], &dst).unwrap();
let point = CS::Group::hash_to_curve::<CS::Hash>(&[&input], &dst).unwrap();
let res2 = finalize_after_unblind::<CS, _, _>(iter::once((input.as_ref(), point)), &[])
.next()
.unwrap()