func dump_sigscript(d []byte) bool {
if len(d) < 10+34 { // at least 10 bytes for sig and 34 bytes key
fmt.Println(" WARNING: Short sigScript")
fmt.Print(hex_dump(d))
return false
}
rd := bytes.NewReader(d)
// ECDSA Signature
le, _ := rd.ReadByte()
if le < 0x40 {
return dump_raw_sigscript(d)
}
sd := make([]byte, le)
_, er := rd.Read(sd)
if er != nil {
return dump_raw_sigscript(d)
}
sig, er := btc.NewSignature(sd)
if er != nil {
return dump_raw_sigscript(d)
}
fmt.Printf(" R = %64s\n", hex.EncodeToString(sig.R.Bytes()))
fmt.Printf(" S = %64s\n", hex.EncodeToString(sig.S.Bytes()))
fmt.Printf(" HashType = %02x\n", sig.HashType)
// Key
le, er = rd.ReadByte()
if er != nil {
fmt.Println(" WARNING: PublicKey not present")
fmt.Print(hex_dump(d))
return false
}
sd = make([]byte, le)
_, er = rd.Read(sd)
if er != nil {
fmt.Println(" WARNING: PublicKey too short", er.Error())
fmt.Print(hex_dump(d))
return false
}
fmt.Printf(" PublicKeyType = %02x\n", sd[0])
key, er := btc.NewPublicKey(sd)
if er != nil {
fmt.Println(" WARNING: PublicKey broken", er.Error())
fmt.Print(hex_dump(d))
return false
}
fmt.Printf(" X = %64s\n", key.X.String())
if le >= 65 {
fmt.Printf(" Y = %64s\n", key.Y.String())
}
if rd.Len() != 0 {
fmt.Println(" WARNING: Extra bytes at the end of sigScript")
fmt.Print(hex_dump(d[len(d)-rd.Len():]))
}
return true
}
/*
{
"address" : "2NAHUDSC1EmbTBwQQp4VQ2FNzWDqHtmk1i6",
"redeemScript" : "512102cdc4fff0ad031ea5f2d0d4337e2bf976b84334f8f80b08fe3f69886d58bc5a8a2102ebf54926d3edaae51bde71f2976948559a8d43fce52f5e7ed9ed85dbaa449d7f52ae"
}
*/
func main() {
var testnet bool
if len(os.Args) < 3 {
fmt.Println("Specify one integer and at least one public key.")
fmt.Println("For Testent, make the integer negative.")
return
}
cnt, er := strconv.ParseInt(os.Args[1], 10, 32)
if er != nil {
println("Count value:", er.Error())
return
}
if cnt < 0 {
testnet = true
cnt = -cnt
}
if cnt < 1 || cnt > 16 {
println("The integer (required number of keys) must be between 1 and 16")
return
}
buf := new(bytes.Buffer)
buf.WriteByte(byte(0x50 + cnt))
fmt.Println("Trying to prepare multisig address for", cnt, "out of", len(os.Args)-2, "public keys ...")
var pkeys byte
var ads string
for i := 2; i < len(os.Args); i++ {
if pkeys == 16 {
println("Oh, give me a break. You don't need more than 16 public keys - stopping here!")
break
}
d, er := hex.DecodeString(os.Args[i])
if er != nil {
println("pubkey", i, er.Error())
}
_, er = btc.NewPublicKey(d)
if er != nil {
println("pubkey", i, er.Error())
return
}
pkeys++
buf.WriteByte(byte(len(d)))
buf.Write(d)
if ads != "" {
ads += ", "
}
ads += "\"" + btc.NewAddrFromPubkey(d, btc.AddrVerPubkey(testnet)).String() + "\""
}
buf.WriteByte(0x50 + pkeys)
buf.WriteByte(0xae)
p2sh := buf.Bytes()
addr := btc.NewAddrFromPubkey(p2sh, btc.AddrVerScript(testnet))
rec := "{\n"
rec += fmt.Sprintf("\t\"multiAddress\" : \"%s\",\n", addr.String())
rec += fmt.Sprintf("\t\"scriptPubKey\" : \"a914%s87\",\n", hex.EncodeToString(addr.Hash160[:]))
rec += fmt.Sprintf("\t\"keysRequired\" : %d,\n", cnt)
rec += fmt.Sprintf("\t\"keysProvided\" : %d,\n", pkeys)
rec += fmt.Sprintf("\t\"redeemScript\" : \"%s\",\n", hex.EncodeToString(p2sh))
rec += fmt.Sprintf("\t\"listOfAddres\" : [%s]\n", ads)
rec += "}\n"
fname := addr.String() + ".json"
ioutil.WriteFile(fname, []byte(rec), 0666)
fmt.Println("The address record stored in", fname)
}
