mirror of
https://github.com/sonr-io/crypto.git
synced 2026-08-02 15:31:38 +00:00
47 lines
835 B
Go
47 lines
835 B
Go
//
|
|
// Copyright Coinbase, Inc. All Rights Reserved.
|
|
//
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
//
|
|
|
|
package mina
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/sonr-io/sonr/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
|
|
}
|