pubkey.py 文件源码

def sign(self, M, K):
        """Sign a piece of data.

        :Parameter M: The piece of data to encrypt.
        :Type M: byte string or long

        :Parameter K: A random parameter required by some algorithms
        :Type K: byte string or long

        :Return: A tuple with two items.
        """
        if (not self.has_private()):
            raise TypeError('Private key not available in this object')
        if isinstance(M, types.StringType): M=bytes_to_long(M)
        if isinstance(K, types.StringType): K=bytes_to_long(K)
        return self._sign(M, K)