dns-server.py 文件源码

def validate_sig(body, sig_str, pkh):
    """
    Validate the signature on the body of the request - throws exception if not valid.
    """
    # Check permission to update
    if (pkh is None):
        raise PermissionError("pkh not found.")

    # Validate the pkh format
    base58.b58decode_check(pkh)
    if (len(pkh) < 20) or (len(pkh) > 40):
        raise PermissionError("Invalid pkh")

    try:
        if not sig_str:
            raise PermissionError("X-Bitcoin-Sig header not found.")
        if not wallet.verify_bitcoin_message(body, sig_str, pkh):
            raise PermissionError("X-Bitcoin-Sig header not valid.")
    except Exception as err:
        logger.error("Failure: {0}".format(err))
        raise PermissionError("X-Bitcoin-Sig header validation failed.")

    return True