twisted.internet._sslverify._ChooseDiffieHellmanEllipticCurve

class documentation

class _ChooseDiffieHellmanEllipticCurve: (source)

Chooses the best elliptic curve for Elliptic Curve Diffie-Hellman key exchange, and provides a configureECDHCurve method to set the curve, when appropriate, on a new OpenSSL.SSL.Context.

The configureECDHCurve method will be set to one of the following based on the provided OpenSSL version and configuration:

_configureOpenSSL110
_configureOpenSSL102
_configureOpenSSL101
_configureOpenSSL101NoCurves.

Parameters
openSSLVersion	The OpenSSL version number.
openSSLlib	The OpenSSL `cffi` library module.
openSSLcrypto	The OpenSSL `crypto` module.
See Also
`OpenSSL.SSL.OPENSSL_VERSION_NUMBER`
`crypto`

Method	`__init__`	Undocumented
Instance Variable	`configureECDHCurve`	Undocumented
Method	`_configureOpenSSL101`	Set the default elliptic curve for ECDH on the context. Only run on OpenSSL 1.0.1.
Method	`_configureOpenSSL101NoCurves`	No elliptic curves are available on OpenSSL 1.0.1. We can't set anything, so do nothing.
Method	`_configureOpenSSL102`	Have the context automatically choose elliptic curves for ECDH. Run on OpenSSL 1.0.2 and OpenSSL 1.1.0+, but only has an effect on OpenSSL 1.0.2.
Method	`_configureOpenSSL110`	OpenSSL 1.1.0 Contexts are preconfigured with an optimal set of ECDH curves. This method does nothing.
Instance Variable	`_openSSLcrypto`	Undocumented
Instance Variable	`_openSSLlib`	Undocumented

def __init__(self, openSSLVersion, openSSLlib, openSSLcrypto): (source)

Undocumented

configureECDHCurve = (source)

Undocumented

def _configureOpenSSL101(self, ctx): (source)

Set the default elliptic curve for ECDH on the context. Only run on OpenSSL 1.0.1.

Parameters
ctx:`OpenSSL.SSL.Context`	The context on which to set the ECDH curve.

def _configureOpenSSL101NoCurves(self, ctx): (source)

No elliptic curves are available on OpenSSL 1.0.1. We can't set anything, so do nothing.

Parameters
ctx:`OpenSSL.SSL.Context`	The context on which to set the ECDH curve.

def _configureOpenSSL102(self, ctx): (source)

Have the context automatically choose elliptic curves for ECDH. Run on OpenSSL 1.0.2 and OpenSSL 1.1.0+, but only has an effect on OpenSSL 1.0.2.

Parameters
ctx:`OpenSSL.SSL.Context`	The context which .

def _configureOpenSSL110(self, ctx): (source)

OpenSSL 1.1.0 Contexts are preconfigured with an optimal set of ECDH curves. This method does nothing.

Parameters
ctx	`OpenSSL.SSL.Context`

_openSSLcrypto = (source)

Undocumented

_openSSLlib = (source)

Undocumented