AllOrNothing.py 文件源码

def __init__(self, ciphermodule, mode=None, IV=None):
        """AllOrNothing(ciphermodule, mode=None, IV=None)

        ciphermodule is a module implementing the cipher algorithm to
        use.  It must provide the PEP272 interface.

        Note that the encryption key is randomly generated
        automatically when needed.  Optional arguments mode and IV are
        passed directly through to the ciphermodule.new() method; they
        are the feedback mode and initialization vector to use.  All
        three arguments must be the same for the object used to create
        the digest, and to undigest'ify the message blocks.
        """

        self.__ciphermodule = ciphermodule
        self.__mode = mode
        self.__IV = IV
        self.__key_size = ciphermodule.key_size
        if not isInt(self.__key_size) or self.__key_size==0:
            self.__key_size = 16