(no commit message provided)

crypto/signatures/schnorr/mina/challenge_derive.go

@@ -1,42 +0,0 @@
-//
-// Copyright Coinbase, Inc. All Rights Reserved.
-//
-// SPDX-License-Identifier: Apache-2.0
-//
-
-package mina
-
-import (
-	"fmt"
-
-	"github.com/onsonr/hway/crypto/core/curves"
-)
-
-type MinaTSchnorrHandler struct{}
-
-func (m MinaTSchnorrHandler) DeriveChallenge(msg []byte, pubKey curves.Point, r curves.Point) (curves.Scalar, error) {
-	txn := new(Transaction)
-	err := txn.UnmarshalBinary(msg)
-	if err != nil {
-		return nil, err
-	}
-	input := new(roinput).Init(3, 75)
-	txn.addRoInput(input)
-
-	pt, ok := pubKey.(*curves.PointPallas)
-	if !ok {
-		return nil, fmt.Errorf("invalid point")
-	}
-	R, ok := r.(*curves.PointPallas)
-	if !ok {
-		return nil, fmt.Errorf("invalid point")
-	}
-
-	pk := new(PublicKey)
-	pk.value = pt.GetEp()
-
-	sc := msgHash(pk, R.X(), input, ThreeW, MainNet)
-	s := new(curves.ScalarPallas)
-	s.SetFq(sc)
-	return s, nil
-}