Issues

• Connection.master_key() raises OpenSSL.SSL.Error([]) on TLS 1.3 connections with openssl 4.1.0

  pyca/pyopenssl#1544 · Filter by author jaipaulcheernam opened on Oct 29, 2026

• Allow to trigger a TLS 1.3 KeyUpdate

  pyca/pyopenssl#1501 · Filter by author adiroiban opened on May 9, 2026
  3

• Backport AWS-LC compatibility to 24.x and 25.x

  pyca/pyopenssl#1493 · Filter by author WillChilds-Klein opened on Apr 14, 2026
  3

• Documentation is misleading about when get_notBefore and get_notAfter return None

  pyca/pyopenssl#1488 · Filter by author davidben opened on Apr 1, 2026
  3

• [docs regression in v18.0.0] The API document lost all socket.socket-derived attributes

  pyca/pyopenssl#1465 · Filter by author webknjaz opened on Nov 25, 2025

• TestOCSP.test_client_receives_servers_data fails with openssl 3.6.0

  pyca/pyopenssl#1455 · Filter by author MeggyCal opened on Oct 8, 2025
  3

• Add support for set_client_hello_callback to expose TLS ClientHello in Python to enable JA3 TLS fingerprinting

  pyca/pyopenssl#1430 · Filter by author evilaliv3 opened on Jul 5, 2025
  4

• Support for Post-Quantum Cryptography in PyOpenSSL

  pyca/pyopenssl#1424 · Filter by author AlessandroAmadoriTNO opened on Apr 2, 2025
  1

• Replacement for CRL name hash computation

  pyca/pyopenssl#1412 · Filter by author number492 opened on Jan 18, 2025
  3

• Issue with TLS 1.3 Session Resumption in PyOpenSSL

  pyca/pyopenssl#1380 · Filter by author Smuul opened on Nov 5, 2024
  2

• Issue with Handling Invalid or Malformed TLS/DTLS Handshake Messages

  pyca/pyopenssl#1324 · Filter by author hamma96 opened on Jul 24, 2024

• Issue with DTLS: Unable to Achieve Handshake Between Client and Serve

  pyca/pyopenssl#1323 · Filter by author hamma96 opened on Jul 24, 2024
  1

• sect163k1 is not appearing in the ClientHello message

  pyca/pyopenssl#1322 · Filter by author hamma96 opened on Jul 24, 2024

• Deprecate/remove all non-SSL APIs in pyOpenSSL

  pyca/pyopenssl#1321 · Filter by author alex opened on Jul 20, 2024
  5

• expose SSL_set_info_callback (i.e. Connection.set_info_callback)

  pyca/pyopenssl#1304 · Filter by author glyph opened on May 1, 2024

• Add SSL_OP_CLEANSE_PLAINTEXT to exported set of options

  pyca/pyopenssl#1302 · Filter by author evilaliv3 opened on Apr 15, 2024

• 24.1.0: sphinx warnings reference target not found

  pyca/pyopenssl#1299 · Filter by author kloczek opened on Mar 14, 2024
  1

• Use SSL_session_reused API

  pyca/pyopenssl#1275 · Filter by author adiroiban opened on Dec 9, 2023
  1

• High CPU and bandwidth usage with small send()s in OpenSSL.SSL.Connection

  pyca/pyopenssl#1250 · Filter by author itamarst opened on Sep 13, 2023
  2

• Is there a way to get the session_id from the pyopenssl

  pyca/pyopenssl#1244 · Filter by author ratnapolepalli opened on Aug 21, 2023
  9

• TLSv1 handshake failure when called do_handshake() error : OpenSSL.SSL.Error: [('SSL routines', '', 'no protocols available')]

  pyca/pyopenssl#1243 · Filter by author ratnapolepalli opened on Aug 20, 2023
  1

• Does order matter when verifying an X.509 store?

  pyca/pyopenssl#1237 · Filter by author kaedenbrinkman opened on Aug 8, 2023
  2

• SSL_CTX_set_cipher_list missing implementation

  pyca/pyopenssl#1224 · Filter by author BillyGLW opened on Jun 6, 2023
  1

• Missing export of OpenSSL.SSL.FILETYPE_ASN1

  pyca/pyopenssl#1217 · Filter by author ChristianStadelmann opened on May 25, 2023
  1

• Misleading docstring in test_renegotiation

  pyca/pyopenssl#1216 · Filter by author BillyGLW opened on May 23, 2023