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Clarify FROST's test-provided secp256k1 curve definition

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Luke Parker 2022-05-28 21:06:25 -04:00
parent 244d1b6b68
commit f6a41d9836
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4
crypto/frost/src/tests/literal/secp256k1.rs
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@ -44,6 +44,10 @@ impl Curve for Secp256k1 {
// The IETF draft doesn't specify a secp256k1 ciphersuite
// This test just uses the simplest ciphersuite which would still be viable to deploy
// The comparable P-256 curve uses hash_to_field from the Hash To Curve IETF draft with a context
// string and further DST for H1 ("rho") and H3 ("digest"). It's not currently worth it to add
// that weight, yet if secp256k1 is ever officially acknowledged (not just a testing curve), it
// must be properly implemented.
fn hash_msg(msg: &[u8]) -> Vec<u8> {
(&Sha256::digest(msg)).to_vec()
}