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