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30 lines
569 B
Go
30 lines
569 B
Go
package mpc
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import (
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"crypto/ecdsa"
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"golang.org/x/crypto/sha3"
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)
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func VerifyWithPubKey(pubKeyCompressed []byte, data []byte, sig []byte) (bool, error) {
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edSig, err := DeserializeSignature(sig)
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if err != nil {
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return false, err
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}
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ePub, err := GetECDSAPoint(pubKeyCompressed)
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if err != nil {
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return false, err
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}
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pk := &ecdsa.PublicKey{
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Curve: ePub.Curve,
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X: ePub.X,
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Y: ePub.Y,
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}
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// Hash the message using SHA3-256
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hash := sha3.New256()
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hash.Write(data)
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digest := hash.Sum(nil)
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return ecdsa.Verify(pk, digest, edSig.R, edSig.S), nil
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}
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