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Support configuring TLSv1.3 cipher suites

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The ssl_ciphers GUC can only set cipher suites for TLSv1.2, and lower,
connections. For TLSv1.3 connections a different OpenSSL API must be
used.  This adds a new GUC, ssl_tls13_ciphers, which can be used to
configure a colon separated list of cipher suites to support when
performing a TLSv1.3 handshake.

Original patch by Erica Zhang with additional hacking by me.

Author: Erica Zhang <ericazhangy2021@qq.com>
Author: Daniel Gustafsson <daniel@yesql.se>
Reviewed-by: Jacob Champion <jacob.champion@enterprisedb.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl>
Discussion: https://postgr.es/m/tencent_063F89FA72CCF2E48A0DF5338841988E9809@qq.com
This commit is contained in:
Daniel Gustafsson
2024-10-24 15:20:32 +02:00
parent 3d1ef3a15c
commit 45188c2ea2
7 changed files with 66 additions and 15 deletions
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3
src/backend/utils/misc/postgresql.conf.sample
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@ -110,7 +110,8 @@
#ssl_crl_file = ''
#ssl_crl_dir = ''
#ssl_key_file = 'server.key'
#ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' # allowed SSL ciphers
#ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' # allowed TLSv1.2 ciphers
#ssl_tls13_ciphers = '' # allowed TLSv1.3 cipher suites, blank for default
#ssl_prefer_server_ciphers = on
#ssl_groups = 'prime256v1'
#ssl_min_protocol_version = 'TLSv1.2'