xref: /curl/docs/cmdline-opts/tls13-ciphers.md (revision fe9f68fa)
1---
2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
3SPDX-License-Identifier: curl
4Long: tls13-ciphers
5Arg: <list>
6help: TLS 1.3 cipher suites to use
7Protocols: TLS
8Category: tls
9Added: 7.61.0
10Multi: single
11See-also:
12  - ciphers
13  - curves
14  - proxy-tls13-ciphers
15Example:
16  - --tls13-ciphers TLS_AES_128_GCM_SHA256 $URL
17---
18
19# `--tls13-ciphers`
20
21Specifies which cipher suites to use in the connection if it negotiates TLS
221.3. The list of ciphers suites must specify valid ciphers. Read up on TLS 1.3
23cipher suite details on this URL:
24
25https://curl.se/docs/ssl-ciphers.html
26
27This option is currently used only when curl is built to use OpenSSL 1.1.1 or
28later, or Schannel. If you are using a different SSL backend you can try
29setting TLS 1.3 cipher suites by using the --ciphers option.
30