# Source code for M2Crypto.SSL.Cipher

    """SSL Ciphers

    Copyright (c) 1999-2003 Ng Pheng Siong. All rights reserved."""

    __all__ = ['Cipher', 'Cipher_Stack']

    from M2Crypto import m2, six
    from typing import Iterable  # noqa

    class Cipher(object):
        def __init__(self, cipher):
            # type: (str) -> None
            self.cipher = cipher

        def __len__(self):
            # type: () -> int
            return m2.ssl_cipher_get_bits(self.cipher)

        def __repr__(self):
            # type: () -> str
            return "%s-%s" % (self.name(), len(self))

        def __str__(self):
            # type: () -> str
            return "%s-%s" % (self.name(), len(self))

        def version(self):
            # type: () -> int
            return m2.ssl_cipher_get_version(self.cipher)

        def name(self):
            # type: () -> str
            return six.ensure_text(m2.ssl_cipher_get_name(self.cipher))

    class Cipher_Stack(object):
        def __init__(self, stack):
            # type: (bytes) -> None
            """
            :param stack: binary of the C-type STACK_OF(SSL_CIPHER)
            """
            self.stack = stack

        def __len__(self):
            # type: () -> int
            return m2.sk_ssl_cipher_num(self.stack)

        def __getitem__(self, idx):
            # type: (int) -> Cipher
            if not 0 <= idx < m2.sk_ssl_cipher_num(self.stack):
                raise IndexError('index out of range')
            v = m2.sk_ssl_cipher_value(self.stack, idx)
            return Cipher(v)

        def __iter__(self):
            # type: () -> Iterable
            for i in six.moves.range(m2.sk_ssl_cipher_num(self.stack)):
                yield self[i]