saymrwulf/pasta_curves-source
1
0
Fork 0
mirror of https://github.com/saymrwulf/pasta_curves-source.git synced 2026-09-05 20:10:32 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Remove unnecessary Transcript::init_with_hashers constructor

Browse source
This commit is contained in:
Jack Grigg 2020-11-25 19:13:45 +00:00
parent 4a3b830165
commit 63e3bc1e15
2 changed files with 5 additions and 21 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
src/poly/commitment.rs
View file

@ -257,7 +257,7 @@ fn test_opening_proof() {
use crate::arithmetic::{ use crate::arithmetic::{
eval_polynomial, get_challenge_scalar, Challenge, Curve, CurveAffine, FieldExt, eval_polynomial, get_challenge_scalar, Challenge, Curve, CurveAffine, FieldExt,
}; };
use crate::transcript::{DummyHash, Hasher, Transcript}; use crate::transcript::{DummyHash, Transcript};
use crate::tweedle::{EpAffine, Fp, Fq}; use crate::tweedle::{EpAffine, Fp, Fq};
let params = Params::<EpAffine>::new::<DummyHash<Fp>>(K); let params = Params::<EpAffine>::new::<DummyHash<Fp>>(K);
@ -273,18 +273,14 @@ fn test_opening_proof() {
let p = params.commit(&px, blind).to_affine(); let p = params.commit(&px, blind).to_affine();
let mut hasher = DummyHash::init(Field::one()); let mut transcript = Transcript::<_, DummyHash<_>, DummyHash<_>>::new();
let (p_x, p_y) = p.get_xy().unwrap(); transcript.absorb_point(&p).unwrap();
hasher.absorb(p_x); let x_packed = transcript.squeeze().get_lower_128();
hasher.absorb(p_y);
let x_packed = hasher.squeeze().get_lower_128();
let x: Fq = get_challenge_scalar(Challenge(x_packed)); let x: Fq = get_challenge_scalar(Challenge(x_packed));
// Evaluate the polynomial // Evaluate the polynomial
let v = eval_polynomial(&px, x); let v = eval_polynomial(&px, x);
hasher.absorb(Fp::from_bytes(&v.to_bytes()).unwrap()); // unlikely to fail since p ~ q transcript.absorb_base(Fp::from_bytes(&v.to_bytes()).unwrap()); // unlikely to fail since p ~ q
let scalar_hasher = DummyHash::init(Fq::one());
let mut transcript = Transcript::init_with_hashers(&hasher, &scalar_hasher);
loop { loop {
let mut transcript_dup = transcript.clone(); let mut transcript_dup = transcript.clone();

12
src/transcript.rs
View file

@ -81,18 +81,6 @@ impl<C: CurveAffine, HBase: Hasher<C::Base>, HScalar: Hasher<C::Scalar>>
} }
} }
/// Initialise a new transcript with some given base_hasher and
/// scalar_hasher
#[cfg(test)]
pub(crate) fn init_with_hashers(base_hasher: &HBase, scalar_hasher: &HScalar) -> Self {
Transcript {
base_hasher: base_hasher.clone(),
scalar_hasher: scalar_hasher.clone(),
scalar_needs_squeezing: false,
_marker: PhantomData,
}
}
fn conditional_scalar_squeeze(&mut self) { fn conditional_scalar_squeeze(&mut self) {
if self.scalar_needs_squeezing { if self.scalar_needs_squeezing {
let transcript_scalar_point = let transcript_scalar_point =