mirror of
https://source.quilibrium.com/quilibrium/ceremonyclient.git
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43 lines
857 B
Go
43 lines
857 B
Go
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//
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// Copyright Coinbase, Inc. All Rights Reserved.
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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package mina
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import (
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"fmt"
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"source.quilibrium.com/quilibrium/monorepo/nekryptology/pkg/core/curves"
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)
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type MinaTSchnorrHandler struct{}
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func (m MinaTSchnorrHandler) DeriveChallenge(msg []byte, pubKey curves.Point, r curves.Point) (curves.Scalar, error) {
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txn := new(Transaction)
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err := txn.UnmarshalBinary(msg)
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if err != nil {
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return nil, err
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}
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input := new(roinput).Init(3, 75)
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txn.addRoInput(input)
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pt, ok := pubKey.(*curves.PointPallas)
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if !ok {
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return nil, fmt.Errorf("invalid point")
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}
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R, ok := r.(*curves.PointPallas)
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if !ok {
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return nil, fmt.Errorf("invalid point")
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}
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pk := new(PublicKey)
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pk.value = pt.GetEp()
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sc := msgHash(pk, R.X(), input, ThreeW, MainNet)
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s := new(curves.ScalarPallas)
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s.SetFq(sc)
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return s, nil
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}
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