[New-bugs-announce] [issue27866] ssl: get list of enabled ciphers

[Christian Heimes]

New submission from Christian Heimes:

SSLContext has a set_ciphers() method but no method to get the actual list of enabled ciphers. https://github.com/tiran/cpython/tree/feature/openssl_ciphers implements get_ciphers()

>>> import ssl, pprint
>>> ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
>>> ctx.set_ciphers('ECDHE+AESGCM:!ECDSA')
>>> pprint.pprint(ctx.get_ciphers())
[{'alg_bits': 256,
  'description': 'ECDHE-RSA-AES256-GCM-SHA384 TLSv1.2 Kx=ECDH     Au=RSA  '
                 'Enc=AESGCM(256) Mac=AEAD',
  'id': 50380848,
  'name': 'ECDHE-RSA-AES256-GCM-SHA384',
  'protocol': 'TLSv1/SSLv3',
  'strength_bits': 256},
 {'alg_bits': 128,
  'description': 'ECDHE-RSA-AES128-GCM-SHA256 TLSv1.2 Kx=ECDH     Au=RSA  '
                 'Enc=AESGCM(128) Mac=AEAD',
  'id': 50380847,
  'name': 'ECDHE-RSA-AES128-GCM-SHA256',
  'protocol': 'TLSv1/SSLv3',
  'strength_bits': 128}]

With OpenSSL 1.1 the dict will have more fields.

Both the return value and functionality is different to https://docs.python.org/3/library/ssl.html#ssl.SSLSocket.shared_ciphers .

----------
components: Library (Lib)
messages: 273703
nosy: alex, christian.heimes, dstufft, giampaolo.rodola, janssen
priority: normal
severity: normal
status: open
title: ssl: get list of enabled ciphers
type: enhancement
versions: Python 3.6

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue27866>
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