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[NOD-876] Replace ecc with go-secp256k1 for public keys (#670)

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* Replace ecc with go-secp256k1 in txscript

* Replace ecc with go-secp256k1 in util and cmd

* Replace ecc.Multiset with secp256k1.MultiSet
This commit is contained in:
Elichai Turkel
2020-03-26 17:03:39 +02:00
committed by GitHub
parent e000e10738
commit f80908fb4e
19 changed files with 326 additions and 202 deletions
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7
txscript/script.go
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@@ -285,7 +285,7 @@ func shallowCopyTx(tx *wire.MsgTx) wire.MsgTx {
// CalcSignatureHash will, given a script and hash type for the current script
// engine instance, calculate the signature hash to be used for signing and
// verification.
func CalcSignatureHash(script []byte, hashType SigHashType, tx *wire.MsgTx, idx int) ([]byte, error) {
func CalcSignatureHash(script []byte, hashType SigHashType, tx *wire.MsgTx, idx int) (*daghash.Hash, error) {
parsedScript, err := parseScript(script)
if err != nil {
return nil, errors.Errorf("cannot parse output script: %s", err)
@@ -296,7 +296,7 @@ func CalcSignatureHash(script []byte, hashType SigHashType, tx *wire.MsgTx, idx
// calcSignatureHash will, given a script and hash type for the current script
// engine instance, calculate the signature hash to be used for signing and
// verification.
func calcSignatureHash(script []parsedOpcode, hashType SigHashType, tx *wire.MsgTx, idx int) ([]byte, error) {
func calcSignatureHash(script []parsedOpcode, hashType SigHashType, tx *wire.MsgTx, idx int) (*daghash.Hash, error) {
// The SigHashSingle signature type signs only the corresponding input
// and output (the output with the same index number as the input).
//
@@ -367,7 +367,8 @@ func calcSignatureHash(script []parsedOpcode, hashType SigHashType, tx *wire.Msg
wbuf := bytes.NewBuffer(make([]byte, 0, txCopy.SerializeSize()+4))
txCopy.Serialize(wbuf)
binary.Write(wbuf, binary.LittleEndian, hashType)
return daghash.DoubleHashB(wbuf.Bytes()), nil
hash := daghash.DoubleHashH(wbuf.Bytes())
return &hash, nil
}
// asSmallInt returns the passed opcode, which must be true according to