curl/docs/cmdline-opts/ciphers.md

c	SPDX-License-Identifier	Long	Arg	Help	Protocols	Category	Added	Multi	See-also	Example
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.	curl	ciphers	<list>	TLS 1.2 (1.1, 1.0) ciphers to use	TLS	tls	7.9	single	tls13-ciphers proxy-ciphers curves	--ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256 $URL

--ciphers

Specifies which cipher suites to use in the connection if it negotiates TLS 1.2 (1.1, 1.0). The list of ciphers suites must specify valid ciphers. Read up on cipher suite details on this URL:

https://curl.se/docs/ssl-ciphers.html