Python SSLContext.set_ciphers方法代码示例

# 需要导入模块: from ssl import SSLContext [as 别名]
# 或者: from ssl.SSLContext import set_ciphers [as 别名]
def create_urllib3_context(ssl_version=None, cert_reqs=None,
                           options=None, ciphers=None):
    """All arguments have the same meaning as ``ssl_wrap_socket``.

    By default, this function does a lot of the same work that
    ``ssl.create_default_context`` does on Python 3.4+. It:

    - Disables SSLv2, SSLv3, and compression
    - Sets a restricted set of server ciphers

    If you wish to enable SSLv3, you can do::

        from urllib3.util import ssl_
        context = ssl_.create_urllib3_context()
        context.options &= ~ssl_.OP_NO_SSLv3

    You can do the same to enable compression (substituting ``COMPRESSION``
    for ``SSLv3`` in the last line above).

    :param ssl_version:
        The desired protocol version to use. This will default to
        PROTOCOL_SSLv23 which will negotiate the highest protocol that both
        the server and your installation of OpenSSL support.
    :param cert_reqs:
        Whether to require the certificate verification. This defaults to
        ``ssl.CERT_REQUIRED``.
    :param options:
        Specific OpenSSL options. These default to ``ssl.OP_NO_SSLv2``,
        ``ssl.OP_NO_SSLv3``, ``ssl.OP_NO_COMPRESSION``.
    :param ciphers:
        Which cipher suites to allow the server to select.
    :returns:
        Constructed SSLContext object with specified options
    :rtype: SSLContext
    """
    context = SSLContext(ssl_version or ssl.PROTOCOL_SSLv23)

    context.set_ciphers(ciphers or DEFAULT_CIPHERS)

    # Setting the default here, as we may have no ssl module on import
    cert_reqs = ssl.CERT_REQUIRED if cert_reqs is None else cert_reqs

    if options is None:
        options = 0
        # SSLv2 is easily broken and is considered harmful and dangerous
        options |= OP_NO_SSLv2
        # SSLv3 has several problems and is now dangerous
        options |= OP_NO_SSLv3
        # Disable compression to prevent CRIME attacks for OpenSSL 1.0+
        # (issue #309)
        options |= OP_NO_COMPRESSION

    context.options |= options

    context.verify_mode = cert_reqs
    if getattr(context, 'check_hostname', None) is not None:  # Platform-specific: Python 3.2
        # We do our own verification, including fingerprints and alternative
        # hostnames. So disable it here
        context.check_hostname = False
    return context

# 需要导入模块: from ssl import SSLContext [as 别名]
# 或者: from ssl.SSLContext import set_ciphers [as 别名]
    def ssl_wrap_socket(sock, keyfile=None, certfile=None, cert_reqs=None,
                        ca_certs=None, server_hostname=None,
                        ssl_version=None, ciphers=None):
        """
        All arguments except `server_hostname` have the same meaning as for
        :func:`ssl.wrap_socket`

        :param server_hostname:
            Hostname of the expected certificate
        """
        context = SSLContext(ssl_version)
        context.verify_mode = cert_reqs

        # Disable TLS compression to migitate CRIME attack (issue #309)
        OP_NO_COMPRESSION = 0x20000
        context.options |= OP_NO_COMPRESSION

        if ca_certs:
            try:
                context.load_verify_locations(ca_certs)
            # Py32 raises IOError
            # Py33 raises FileNotFoundError
            except Exception as e:  # Reraise as SSLError
                raise SSLError(e)
        if certfile:
            # FIXME: This block needs a test.
            context.load_cert_chain(certfile, keyfile)
        if ciphers:
            context.set_ciphers(ciphers)
        if HAS_SNI:  # Platform-specific: OpenSSL with enabled SNI
            return context.wrap_socket(sock, server_hostname=server_hostname)
        return context.wrap_socket(sock)

# 需要导入模块: from ssl import SSLContext [as 别名]
# 或者: from ssl.SSLContext import set_ciphers [as 别名]
def sslContext(trustStore: str, keyStore: str) -> SSLContext:
    sslContext = SSLContext(PROTOCOL_TLSv1_2)
    sslContext.verify_mode = CERT_REQUIRED
    storePath = "../../certificates/"
    sslContext.load_verify_locations(storePath + trustStore)
    sslContext.load_cert_chain(storePath + keyStore, password="KeyPass")
    sslContext.set_ciphers("AES128-SHA")
    return sslContext

# 需要导入模块: from ssl import SSLContext [as 别名]
# 或者: from ssl.SSLContext import set_ciphers [as 别名]
def create_thriftpy_context(server_side=False, ciphers=None):
    """Backport create_default_context for older python versions.

    The SSLContext has some default security options, you can disable them
    manually, for example::

        from thriftpy.transport import _ssl
        context = _ssl.create_thriftpy_context()
        context.options &= ~_ssl.OP_NO_SSLv3

    You can do the same to enable compression.
    """
    if MODERN_SSL:
        if server_side:
            context = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
        else:
            context = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)

        if ciphers:
            context.set_ciphers(ciphers)

    else:
        context = SSLContext(ssl.PROTOCOL_SSLv23)
        context.options |= OP_NO_SSLv2
        context.options |= OP_NO_SSLv3
        context.options |= OP_NO_COMPRESSION

        # server/client default options
        if server_side:
            context.options |= OP_CIPHER_SERVER_PREFERENCE
            context.options |= OP_SINGLE_DH_USE
            context.options |= OP_SINGLE_ECDH_USE
        else:
            context.verify_mode = ssl.CERT_REQUIRED
            # context.check_hostname = True
            warnings.warn(
                "ssl check hostname support disabled, upgrade your python",
                InsecurePlatformWarning)

        # Platform-specific: Python 2.6
        if getattr(context, 'supports_set_ciphers', True):
            if ciphers:
                context.set_ciphers(ciphers)
        else:
            warnings.warn("ssl ciphers support disabled, upgrade your python",
                          InsecurePlatformWarning)

    return context

# 需要导入模块: from ssl import SSLContext [as 别名]
# 或者: from ssl.SSLContext import set_ciphers [as 别名]
    def __get_ssl_context(cls, sslca=None):
        """Make an SSLConext for this Python version using public or sslca
        """
        if ((version_info[0] == 2 and (version_info[1] >= 7 and version_info[2] >= 9)) or
                (version_info[0] == 3 and version_info[1] >= 4)):
            logger.debug('SSL method for 2.7.9+ / 3.4+')
            # pylint: disable=no-name-in-module
            from ssl import SSLContext, PROTOCOL_TLSv1_2, CERT_REQUIRED, OP_NO_COMPRESSION
            ctx = SSLContext(PROTOCOL_TLSv1_2)
            ctx.set_ciphers('HIGH:!SSLv3:!TLSv1:!aNULL:@STRENGTH')
            # see CRIME security exploit
            ctx.options |= OP_NO_COMPRESSION
            # the following options are used to verify the identity of the broker
            if sslca:
                ctx.load_verify_locations(sslca)
                ctx.verify_mode = CERT_REQUIRED
                ctx.check_hostname = False
            else:
                # Verify public certifcates if sslca is None (default)
                from ssl import Purpose  # pylint: disable=no-name-in-module
                ctx.load_default_certs(purpose=Purpose.SERVER_AUTH)
                ctx.verify_mode = CERT_REQUIRED
                ctx.check_hostname = True

        elif version_info[0] == 3 and version_info[1] < 4:
            logger.debug('Using SSL method for 3.2+, < 3.4')
            # pylint: disable=no-name-in-module
            from ssl import SSLContext, CERT_REQUIRED, PROTOCOL_SSLv23, OP_NO_SSLv2, OP_NO_SSLv3, OP_NO_TLSv1
            ctx = SSLContext(PROTOCOL_SSLv23)
            ctx.options |= (OP_NO_SSLv2 | OP_NO_SSLv3 | OP_NO_TLSv1)
            ctx.set_ciphers('HIGH:!SSLv3:!TLSv1:!aNULL:@STRENGTH')
            # the following options are used to verify the identity of the broker
            if sslca:
                ctx.load_verify_locations(sslca)
                ctx.verify_mode = CERT_REQUIRED
            else:
                # Verify public certifcates if sslca is None (default)
                ctx.set_default_verify_paths()
                ctx.verify_mode = CERT_REQUIRED

        else:
            raise Exception("Unsupported Python version %s" % '.'.join(str(item) for item in version_info[:3]))

        return ctx