curl-w32/docs/cmdline-opts/proxy-ciphers.md

c	SPDX-License-Identifier	Long	Arg	Help	Added	Category	Multi	See-also	Example
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.	curl	proxy-ciphers	<list>	SSL ciphers to use for proxy	7.52.0	proxy tls	single	ciphers curves proxy	--proxy-ciphers ECDHE-ECDSA-AES256-CCM8 -x https://proxy $URL

--proxy-ciphers

Same as --ciphers but used in HTTPS proxy context.

Specifies which ciphers to use in the connection to the HTTPS proxy. The list of ciphers must specify valid ciphers. Read up on SSL cipher list details on this URL:

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