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from twisted.internet import reactor, ssl
from OpenSSL import SSL
from twisted.internet._sslverify import _OpenSSLECCurve, _defaultCurveName
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):
try:
_ecCurve = _OpenSSLECCurve(_defaultCurveName)
_ecCurve.addECKeyToContext(context)
except:
pass
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
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