wallet.py 文件源码

def hash_160_to_btc_address(h160, v):
    """ Calculates the Bitcoin address of a given RIPEMD-160 hash from an elliptic curve public key.

    :param h160: RIPEMD-160 hash.
    :type h160: bytes
    :param v: version (prefix) used to calculate the Bitcoin address.

     Possible values:

        - 0 for main network (PUBKEY_HASH).
        - 111 For testnet (TESTNET_PUBKEY_HASH).
    :type v: int
    :return: The corresponding Bitcoin address.
    :rtype: hex str
    """

    # If h160 is passed as hex str, the value is converted into bytes.
    if match('^[0-9a-fA-F]*$', h160):
        h160 = unhexlify(h160)

    # Add the network version leading the previously calculated RIPEMD-160 hash.
    vh160 = chr(v) + h160
    # Double sha256.
    h = sha256(sha256(vh160).digest()).digest()
    # Add the two first bytes of the result as a checksum tailing the RIPEMD-160 hash.
    addr = vh160 + h[0:4]
    # Obtain the Bitcoin address by Base58 encoding the result
    addr = b58encode(addr)

    return addr