OpenSSL 1.1.1 / TLS 1.3 cipher suite changes

[tiran]

BPO	33570
Nosy	@vstinner, @tiran, @benjaminp, @ned-deily, @alex, @dstufft, @miss-islington
PRs	bpo-33570: TLS 1.3 ciphers for OpenSSL 1.1.1 #6976 [3.7] bpo-33570: TLS 1.3 ciphers for OpenSSL 1.1.1 (GH-6976) #7064 [2.7] bpo-33570: TLS 1.3 ciphers for OpenSSL 1.1.1 (GH-6976) (GH-8760) #8771 [2.7] bpo-33570: TLS 1.3 ciphers for OpenSSL 1.1.1 (GH-6976) (GH-8760) #10607 [2.7] bpo-33570: Enable OpenSSL 1.1.1 testing within the multissl test file #11879

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/tiran'
closed_at = <Date 2020-10-21.16:40:32.400>
created_at = <Date 2018-05-18.13:00:38.312>
labels = ['expert-SSL', '3.8', 'type-bug', '3.7']
title = 'OpenSSL 1.1.1 / TLS 1.3 cipher suite changes'
updated_at = <Date 2020-10-21.16:40:32.399>
user = 'https://github.com/tiran'

bugs.python.org fields:

activity = <Date 2020-10-21.16:40:32.399>
actor = 'christian.heimes'
assignee = 'christian.heimes'
closed = True
closed_date = <Date 2020-10-21.16:40:32.400>
closer = 'christian.heimes'
components = ['SSL']
creation = <Date 2018-05-18.13:00:38.312>
creator = 'christian.heimes'
dependencies = []
files = []
hgrepos = []
issue_num = 33570
keywords = ['patch']
message_count = 6.0
messages = ['317027', '317345', '317347', '323552', '335609', '335632']
nosy_count = 8.0
nosy_names = ['janssen', 'vstinner', 'christian.heimes', 'benjamin.peterson', 'ned.deily', 'alex', 'dstufft', 'miss-islington']
pr_nums = ['6976', '7064', '8771', '10607', '11879']
priority = 'high'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue33570'
versions = ['Python 2.7', 'Python 3.6', 'Python 3.7', 'Python 3.8']

[tiran]

The definition and configuration of TLS 1.3 cipher suites has changed during the development phase of OpenSSL 1.1.1. The cipher suites are no longer prefixed with "TLS13-". TLS 1.3 are always enabled and can no longer be disabled with SSLContext.set_ciphers() / SSL_CTX_set_cipher_list(). Instead the suites are now configured with SSL_CTX_set_ciphersuites(). See openssl/openssl#5392

For now I'm not going to expose the new API. Instead I'll update the documentation and tests for 2.7 to 3.8 with new names. I'll also mention that TLS 1.3 suites will be always available with OpenSSL 1.1.1.

[tiran]

New changeset e8eb6cb by Christian Heimes in branch 'master':
bpo-33570: TLS 1.3 ciphers for OpenSSL 1.1.1 (GH-6976)
e8eb6cb

[miss-islington]

New changeset cd57b48 by Miss Islington (bot) in branch '3.7':
bpo-33570: TLS 1.3 ciphers for OpenSSL 1.1.1 (GH-6976)
cd57b48

[tiran]

New changeset 3e630c5 by Christian Heimes in branch '3.6':
bpo-33570: TLS 1.3 ciphers for OpenSSL 1.1.1 (GH-6976) (GH-8760)
3e630c5

[vstinner]

New changeset c49f63c by Victor Stinner (stratakis) in branch '2.7':
[2.7] bpo-33570: TLS 1.3 ciphers for OpenSSL 1.1.1 (GH-6976) (GH-8760) (GH-10607)
c49f63c

[vstinner]

New changeset c3c49ec by Victor Stinner (stratakis) in branch '2.7':
[2.7] bpo-33570: Enable OpenSSL 1.1.1 testing within the multissltests (GH-11879)
c3c49ec