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Use GroupEncoding instead of Curve's from_slice/to_bytes

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Increases usage of standardization while expanding dalek_ff_group.

Closes https://github.com/serai-dex/serai/issues/26 by moving 
dfg::EdwardsPoint to only be for the prime subgroup.
This commit is contained in:
Luke Parker
2022-06-28 01:25:26 -04:00
parent ac17645fc8
commit 3de7a76051
14 changed files with 141 additions and 178 deletions
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6
crypto/frost/src/schnorr.rs
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@@ -1,6 +1,6 @@
use rand_core::{RngCore, CryptoRng};
use group::ff::Field;
use group::{ff::{Field, PrimeField}, GroupEncoding};
use multiexp::BatchVerifier;
@@ -16,8 +16,8 @@ pub struct SchnorrSignature<C: Curve> {
impl<C: Curve> SchnorrSignature<C> {
pub fn serialize(&self) -> Vec<u8> {
let mut res = Vec::with_capacity(C::G_len() + C::F_len());
res.extend(C::G_to_bytes(&self.R));
res.extend(C::F_to_bytes(&self.s));
res.extend(self.R.to_bytes().as_ref());
res.extend(self.s.to_repr().as_ref());
res
}
}