//Rename SignHash func _Sign(msg []byte, seckey []byte) []byte { if len(seckey) != 32 { log.Panic("Sign, Invalid seckey length") } if secp.SeckeyIsValid(seckey) != 1 { log.Panic("Attempting to sign with invalid seckey") } if msg == nil { log.Panic("Sign, message nil") } var nonce []byte = RandByte(32) var sig []byte = make([]byte, 65) var recid int var cSig secp.Signature var seckey1 secp.Number var msg1 secp.Number var nonce1 secp.Number seckey1.SetBytes(seckey) msg1.SetBytes(msg) nonce1.SetBytes(nonce) ret := cSig.Sign(&seckey1, &msg1, &nonce1, &recid) if ret != 1 { log.Panic("Secp25k1-go, _Sign, signature operation failed") } sig_bytes := cSig.Bytes() for i := 0; i < 64; i++ { sig[i] = sig_bytes[i] } if len(sig_bytes) != 64 { log.Fatal("Invalid signature byte count: %s", len(sig_bytes)) } sig[64] = byte(int(recid)) if int(recid) > 4 { log.Panic() } return sig }
//generate signature in repeatable way func _SignDeterministic(msg []byte, seckey []byte, nonce_seed []byte) []byte { nonce_seed2 := SumSHA256(nonce_seed) //deterministicly generate nonce var sig []byte = make([]byte, 65) var recid int var cSig secp.Signature var seckey1 secp.Number var msg1 secp.Number var nonce1 secp.Number seckey1.SetBytes(seckey) msg1.SetBytes(msg) nonce1.SetBytes(nonce_seed2) ret := cSig.Sign(&seckey1, &msg1, &nonce1, &recid) if ret != 1 { log.Panic("Secp256k1-go, SignDeterministic, signature fail") } sig_bytes := cSig.Bytes() for i := 0; i < 64; i++ { sig[i] = sig_bytes[i] } sig[64] = byte(recid) if len(sig_bytes) != 64 { log.Fatal("Invalid signature byte count: %s", len(sig_bytes)) } if int(recid) > 4 { log.Panic() } return sig }