コード例 #1
0
def extend_message(message, extension, init, key_len):
    ''' Length based extension attack on a md4 keyed authentication code
        Arguments:
            message: Original message
            extension: Message to append
            init: list of md4 init variables
            key_len: length of key
    '''

    original_len = key_len + len(message)
    glue_padding = get_glue_padding(original_len)
    original_len += len(glue_padding)

    new_message = message + glue_padding + extension

    new_hash = md4(extension, init, original_len).hexdigest()

    return (new_message, new_hash)
コード例 #2
0
def extend_message(message, extension, init, key_len):
    ''' Length based extension attack on a md4 keyed authentication code
        Arguments:
            message: Original message
            extension: Message to append
            init: list of md4 init variables
            key_len: length of key
    '''

    original_len = key_len + len(message)
    glue_padding = get_glue_padding(original_len)
    original_len += len(glue_padding)

    new_message = message + glue_padding + extension

    new_hash = md4(extension, init, original_len).hexdigest()

    return (new_message, new_hash)
コード例 #3
0
 def mac(self, text):
     return md4(self.key + text).hexdigest()
コード例 #4
0
 def mac(self, text):
     return md4(self.key + text).hexdigest()