this question maybe some High difficulty , but it about important detail about bitcoin.real bitcoin expert can explain it.
i want to verify the signature in bitcoin.so i usesd the information in
https://blockchain.info/rawtx/5c76eb4dfb0941856a229833ef05b2f5c669dadc98ed2a34ea11974cacba9dc7?format=hexthis website is its hex serialize.
first:
0100000001107f46ae8f3ba0f1f9c5170f950a6fb0d6461a92718b5aa06ee776c4e114afdb00000
000
48473044022014d647cd08f1ea5b31d1e6539b6cbceb9182f6e7b2e29fb969354ef7e3434923022 028bb4eda36af410149baa936322e7c0e46cc5540a3aa89c811bc3c360028bfd301ffffffff020a372f2d010000001976a9148ff0d9ee3c2c4b86d19d265cbd360e95c5191e3d88ac3
2ee9f00000000001976a9145c11f917883b927eef77dc57707aeb853f6d389488ac00000000
the red is the sig
second:
delete the sig
third:
add the previous output script
https://blockchain.info/rawtx/dbaf14e1c476e76ea05a8b71921a46d6b06f0a950f17c5f9f1a03b8fae467f10?format=hexit is 434104b0bd634234abbb1ba1e986e884185c61cf43e001f9137f23c2c409273eb16e6537a576782
eba668a7ef8bd3b3cfb1edb7117ab65129b8a2e681f3c1e0908ef7bac
four :
add to posithon of sig :
0100000001107f46ae8f3ba0f1f9c5170f950a6fb0d6461a92718b5aa06ee776c4e114afdb00000
000434104b0bd634234abbb1ba1e986e884185c61cf43e001f9137f23c2c409273eb16e6537a576
782eba668a7ef8bd3b3cfb1edb7117ab65129b8a2e681f3c1e0908ef7bacffffffff020a372f2d0
10000001976a9148ff0d9ee3c2c4b86d19d265cbd360e95c5191e3d88ac32ee9f00000000001976
a9145c11f917883b927eef77dc57707aeb853f6d389488ac00000000
five :
add the hashtype:
01000000
so the code is :
0100000001107f46ae8f3ba0f1f9c5170f950a6fb0d6461a92718b5aa06ee776c4e114afdb00000
000434104b0bd634234abbb1ba1e986e884185c61cf43e001f9137f23c2c409273eb16e6537a576
782eba668a7ef8bd3b3cfb1edb7117ab65129b8a2e681f3c1e0908ef7bacffffffff020a372f2d0
10000001976a9148ff0d9ee3c2c4b86d19d265cbd360e95c5191e3d88ac32ee9f00000000001976
a9145c11f917883b927eef77dc57707aeb853f6d389488ac0000000001000000
six:
double hash256 is :
f27c6c3aa42563c958292922be1e53fe107f4db0dfadba11122f0b12bf77f3ab
but when i want to verify it ,false,false,false so what happend , i think i am right!!
the verify go code is :
package main
import (
"crypto/ecdsa"
"crypto/elliptic"
"fmt"
"math/big"
"encoding/hex"
)
func main(){
pubkey,_:=hex.DecodeString("b0bd634234abbb1ba1e986e884185c61cf43e001f9137f23c2c409273eb16e6537a576782eba668
a7ef8bd3b3cfb1edb7117ab65129b8a2e681f3c1e0908ef7b");
curve := elliptic.P256()
//公钥的长度
keyLen := len(pubkey)
x := big.Int{}
y := big.Int{}
x.SetBytes(pubkey[:(keyLen / 2)])
y.SetBytes(pubkey[(keyLen / 2):])
rawPubKey := ecdsa.PublicKey{curve, &x, &y}
//hash
hash,_:=hex.DecodeString("f27c6c3aa42563c958292922be1e53fe107f4db0dfadba11122f0b12bf77f3ab ")
r := big.Int{}
s := big.Int{}
rr,_:=hex.DecodeString("14d647cd08f1ea5b31d1e6539b6cbceb9182f6e7b2e29fb969354ef7e3434923")
ss,_:=hex.DecodeString("28bb4eda36af410149baa936322e7c0e46cc5540a3aa89c811bc3c360028bfd3")
r.SetBytes(rr)
s.SetBytes(ss)
if ecdsa.Verify(&rawPubKey, hash[:], &r, &s) == false {
fmt.Printf("%s\n", "true")
}else{
fmt.Printf("%s\n", "false")
}
}