def encipher(self,string):
        """Encipher string using Delastelle cipher according to initialised key.

        Example::

            ciphertext = Delastelle('APCZ WRLFBDKOTYUQGENHXMIVS').encipher(plaintext)     

        :param string: The string to encipher.
        :returns: The enciphered string. The ciphertext will be 3 times the length of the plaintext.
        """           
        string = self.remove_punctuation(string,filter='[^'+self.key+']')        
        ctext = ""
        for c in string:
            ctext += ''.join([str(i) for i in L2IND[c]])
        return ctext
Encipher string using Delastelle cipher according to initialised key.

        Example::

            ciphertext = Delastelle('APCZ WRLFBDKOTYUQGENHXMIVS').encipher(plaintext)     

        :param string: The string to encipher.
        :returns: The enciphered string. The ciphertext will be 3 times the length of the plaintext.