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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def cipher(self):
 """Retrieve information about the current cipher Return a triple consisting of cipher name, SSL protocol version defining its use, and the number of secret bits. Return None if handshaking has not been completed. """


        if not self._handshake_done:
            return

        current_cipher = SSL_get_current_cipher(self._ssl.value)
        cipher_name = SSL_CIPHER_get_name(current_cipher)
        cipher_version = SSL_CIPHER_get_version(current_cipher)
        cipher_bits = SSL_CIPHER_get_bits(current_cipher)
        return cipher_name, cipher_version, cipher_bits