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Use ChaCha20 instead of ChaCha12

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Despite being slower and only used for blinding values, its still 
extremely performant. 20 is far more standard and will avoid an eye 
raise from reviewers.
This commit is contained in:
Luke Parker
2022-08-30 20:01:46 -04:00
parent 6093f4ec93
commit c5256d9b06
3 changed files with 7 additions and 7 deletions
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2
crypto/dleq/src/lib.rs
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@@ -20,7 +20,7 @@ mod tests;
pub(crate) fn challenge<T: Transcript, F: PrimeField>(transcript: &mut T) -> F {
// From here, there are three ways to get a scalar under the ff/group API
// 1: Scalar::random(ChaCha12Rng::from_seed(self.transcript.rng_seed(b"challenge")))
// 1: Scalar::random(ChaCha20Rng::from_seed(self.transcript.rng_seed(b"challenge")))
// 2: Grabbing a UInt library to perform reduction by the modulus, then determining endianess
// and loading it in
// 3: Iterating over each byte and manually doubling/adding. This is simplest