def sign_donation_tx(tx, i, priv):
from bitcoin.main import fast_multiply, decode_privkey, G, inv, N
from bitcoin.transaction import der_encode_sig
k = sign_k
hashcode = btc.SIGHASH_ALL
i = int(i)
if len(priv) <= 33:
priv = btc.safe_hexlify(priv)
pub = btc.privkey_to_pubkey(priv)
address = btc.pubkey_to_address(pub)
signing_tx = btc.signature_form(
tx, i, btc.mk_pubkey_script(address), hashcode)
msghash = btc.bin_txhash(signing_tx, hashcode)
z = btc.hash_to_int(msghash)
# k = deterministic_generate_k(msghash, priv)
r, y = fast_multiply(G, k)
s = inv(k, N) * (z + r * decode_privkey(priv)) % N
rawsig = 27 + (y % 2), r, s
sig = der_encode_sig(*rawsig) + btc.encode(hashcode, 16, 2)
# sig = ecdsa_tx_sign(signing_tx, priv, hashcode)
txobj = btc.deserialize(tx)
txobj["ins"][i]["script"] = btc.serialize_script([sig, pub])
return btc.serialize(txobj)
def sign_donation_tx(tx, i, priv):
from bitcoin.main import fast_multiply, decode_privkey, G, inv, N
from bitcoin.transaction import der_encode_sig
k = sign_k
hashcode = btc.SIGHASH_ALL
i = int(i)
if len(priv) <= 33:
priv = btc.safe_hexlify(priv)
pub = btc.privkey_to_pubkey(priv)
address = btc.pubkey_to_address(pub)
signing_tx = btc.signature_form(tx, i, btc.mk_pubkey_script(address),
hashcode)
msghash = btc.bin_txhash(signing_tx, hashcode)
z = btc.hash_to_int(msghash)
# k = deterministic_generate_k(msghash, priv)
r, y = fast_multiply(G, k)
s = inv(k, N) * (z + r * decode_privkey(priv)) % N
rawsig = 27 + (y % 2), r, s
sig = der_encode_sig(*rawsig) + btc.encode(hashcode, 16, 2)
# sig = ecdsa_tx_sign(signing_tx, priv, hashcode)
txobj = btc.deserialize(tx)
txobj["ins"][i]["script"] = btc.serialize_script([sig, pub])
return btc.serialize(txobj)
def insecure_ecdsa_sign(msghash, priv):
global insecure_k
z = hash_to_int(msghash)
k = insecure_k
r, y = fast_multiply(G, k)
s = inv(k, N) * (z + r * decode_privkey(priv)) % N
v, r, s = 27 + ((y % 2) ^
(0 if s * 2 < N else 1)), r, s if s * 2 < N else N - s
if 'compressed' in get_privkey_format(priv):
print("COmpressed \a")
v += 4
return v, r, s
# 파이썬 실습 파일: 4-5.Bech32Address.py
# https://github.com/sipa/bech32/blob/master/ref/python/segwit_addr.py
# 배포용 실습 코드의 bitcoin 폴더가 있는 곳에서 실행한다.
import binascii
import bitcoin.main as btc
import bitcoin.segwit_addr as bech32
# 개인키를 생성한다
while (1):
privKey = btc.random_key() # 256 bit Random number를 생성한다
dPrivKey = btc.decode_privkey(privKey, 'hex') # 16진수 문자열을 10진수 숫자로 변환한다
if dPrivKey < btc.N: # secp256k1 의 N 보다 작으면 OK
break
privKey='860ef116221744a5299c99a0ed726c15a2148a21a341fe522399c84a59771cfe01'
# 개인키로 공개키를 생성한다. Compressed format.
pubKey = btc.privkey_to_pubkey(privKey)
cPubKey = btc.compress(pubKey)
# 공개키로 160-bit public key hash를 생성한다
witprog = btc.bin_hash160(binascii.unhexlify(cPubKey))
# BIP-173 주소를 생성한다. (Base32 address format for native v0-16 witness outputs)
# P2WPKH
mainnetAddr = bech32.encode('bc', 0, witprog)
testnetAddr = bech32.encode('tb', 0, witprog)
# 결과
print("\n\n공개키 :", cPubKey)
print("Bech32 주소 (Mainnet P2WPKH) :", mainnetAddr)
print("Bech32 주소 (Testnet P2WPKH) :", testnetAddr)
print("\n ===the result to encode this message===\n", en_m)
v, r, s = btc.ecdsa_raw_sign(btc.electrum_sig_hash(en_m), d)
print("\n ===ECDSA raw Signature Result(v)=== \n", v)
print("\n ===ECDSA raw Signature Result(r)=== \n", r)
print("\n ===ECDSA Signature Result(s)=== \n", s)
sig1 = btc.encode_sig(v, r, s)
print("\n===Signature Result(sig1)===\n", sig1)
sig2 = btc.ecdsa_sign(en_m, d)
print("\n ===Signature Result(sig2)=== \n", sig2)
v = btc.ecdsa_verify(en_m, sig2, Q)
print("\n===v's value===\t", v)
print("\nMessage =", en_m.decode())
if v:
print("\n Valid Signature")
else:
print("\n Invalid Signature")
passphrase = 'Brain wallet\'s test private key. forget it'
privKey = btc.sha256(passphrase)
dprivkey = btc.decode_privkey(privKey, 'hex')
print("\n === PassPhrase ====\n", passphrase)
print("\n === privKey ====\n", privKey)
print("\n === decimal of privkey ====\n", dprivkey)
input("\n\n\t\t if you wanna stop it, pls enter")
