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Prad Nukala
2024-07-06 00:34:41 -04:00
committed by Prad Nukala (aider)
parent 5fd43dfd6b
commit 2f976209db
345 changed files with 409 additions and 72177 deletions
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crypto/ted25519/frost/challenge_derive.go
-27
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@@ -1,27 +0,0 @@
//
// Copyright Coinbase, Inc. All Rights Reserved.
//
// SPDX-License-Identifier: Apache-2.0
//
package frost
import (
"crypto/sha512"
"github.com/onsonr/hway/crypto/core/curves"
)
type ChallengeDerive interface {
DeriveChallenge(msg []byte, pubKey curves.Point, r curves.Point) (curves.Scalar, error)
}
type Ed25519ChallengeDeriver struct{}
func (ed Ed25519ChallengeDeriver) DeriveChallenge(msg []byte, pubKey curves.Point, r curves.Point) (curves.Scalar, error) {
h := sha512.New()
_, _ = h.Write(r.ToAffineCompressed())
_, _ = h.Write(pubKey.ToAffineCompressed())
_, _ = h.Write(msg)
return new(curves.ScalarEd25519).SetBytesWide(h.Sum(nil))
}