MatrixSynapse/synapse/crypto/context_factory.py

24 lines
813 B
Python

from twisted.internet import reactor, ssl
from OpenSSL import SSL
class ServerContextFactory(ssl.ContextFactory):
"""Factory for PyOpenSSL SSL contexts that are used to handle incoming
connections and to make connections to remote servers."""
def __init__(self, config):
self._context = SSL.Context(SSL.SSLv23_METHOD)
self.configure_context(self._context, config)
@staticmethod
def configure_context(context, config):
context.set_options(SSL.OP_NO_SSLv2 | SSL.OP_NO_SSLv3)
context.use_certificate(config.tls_certificate)
context.use_privatekey(config.tls_private_key)
context.load_tmp_dh(config.tls_dh_params_path)
context.set_cipher_list("!ADH:HIGH+kEDH:!AECDH:HIGH+kEECDH")
def getContext(self):
return self._context