예제 #1
0
def sign_p2pkh(tx, i, priv, pub, hashtype = SIGHASH_ALL):
    assert isinstance(tx, dict)
    i = int(i)
    assert isinstance(priv, int)
    assert isinstance(pub, bytes)

    address = hashes.hash160(pub)
    prev_script = script.make_p2pkh(address)
    txhash = sighash(tx, i, prev_script, hashtype)
    sig = ecdsa.sign(txhash, priv)
    sig = ecdsa.serialize_sig(sig) + convert.int_to_byte(hashtype)
    tx["ins"][i]["script"] = script.serialize([sig, pub])
예제 #2
0
파일: hd.py 프로젝트: Dirbaio/btcmagic
def derive_xpub(k, i):
    i = int(i)

    if i >= 2**31:
        raise Exception("Can't do private derivation on public key!")

    pub = k['pub']
    pub_ser = ecdsa.serialize_pub(pub)

    hmacdata = pub_ser + convert.int_to_bytes(i, 4)
    I = hmac.new(k['chaincode'], hmacdata, hashlib.sha512).digest()

    return {
        'depth': k['depth'] + 1,
        'fingerprint': hashes.hash160(pub_ser)[:4],
        'i': i,
        'chaincode': I[32:],
        'pub': ec.add(k['pub'], ecdsa.priv_to_pub(ecdsa.deserialize_priv(I[:32])))
    }
예제 #3
0
파일: hd.py 프로젝트: Dirbaio/btcmagic
def derive_xpriv(k, i):
    i = int(i)

    pub = ecdsa.priv_to_pub(k['priv'])
    pub_ser = ecdsa.serialize_pub(pub)
    priv_ser = ecdsa.serialize_priv(k['priv'])

    if i >= 2**31:
        hmacdata = b'\x00' + priv_ser + convert.int_to_bytes(i, 4)
    else:
        hmacdata = pub_ser + convert.int_to_bytes(i, 4)

    I = hmac.new(k['chaincode'], hmacdata, hashlib.sha512).digest()

    return {
        'depth': k['depth'] + 1,
        'fingerprint': hashes.hash160(pub_ser)[:4],
        'i': i,
        'chaincode': I[32:],
        'priv': ec.add_scalar(k['priv'], ecdsa.deserialize_priv(I[:32]))
    }
예제 #4
0
파일: convert.py 프로젝트: Dirbaio/btcmagic
def pub_to_addr(pub):
    assert isinstance(pub, bytes)
    return hash_to_addr(hashes.hash160(pub))