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Fix https://github.com/serai-dex/serai/issues/150

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This commit is contained in:
Luke Parker
2022-11-10 22:35:09 -05:00
parent d714f2202d
commit 84de427d72
32 changed files with 313 additions and 278 deletions
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15
crypto/dleq/src/lib.rs
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@@ -1,9 +1,11 @@
#![cfg_attr(docsrs, feature(doc_auto_cfg))]
#![cfg_attr(not(feature = "std"), no_std)]
use core::ops::Deref;
use rand_core::{RngCore, CryptoRng};
use zeroize::Zeroize;
use zeroize::{Zeroize, Zeroizing};
use transcript::Transcript;
@@ -79,23 +81,20 @@ impl<G: PrimeGroup> DLEqProof<G> {
rng: &mut R,
transcript: &mut T,
generators: &[G],
mut scalar: G::Scalar,
scalar: &Zeroizing<G::Scalar>,
) -> DLEqProof<G>
where
G::Scalar: Zeroize,
{
let mut r = G::Scalar::random(rng);
let r = Zeroizing::new(G::Scalar::random(rng));
transcript.domain_separate(b"dleq");
for generator in generators {
Self::transcript(transcript, *generator, *generator * r, *generator * scalar);
Self::transcript(transcript, *generator, *generator * r.deref(), *generator * scalar.deref());
}
let c = challenge(transcript);
let s = r + (c * scalar);
scalar.zeroize();
r.zeroize();
let s = (c * scalar.deref()) + r.deref();
DLEqProof { c, s }
}