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curl/docs/cmdline-opts/curves.md
Daniel Stenberg fe9f68fa61
cmdline-opts: shorter help texts 
In an effort to increase the readability of the "--help all" output on
narrow (80 column) terminals.

Co-authored-by: Jay Satiro

Closes #13169
2024-03-25 13:05:24 +01:00

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c SPDX-License-Identifier Long Arg Help Protocols Added Category Multi See-also Example
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. curl curves <list> (EC) TLS key exchange algorithms to request TLS 7.73.0 tls single
ciphers
--curves X25519 $URL

--curves

Set specific curves to use during SSL session establishment according to RFC 8422, 5.1. Multiple algorithms can be provided by separating them with : (e.g. X25519:P-521). The parameter is available identically in the OpenSSL s_client and s_server utilities.

--curves allows a OpenSSL powered curl to make SSL-connections with exactly the (EC) curve requested by the client, avoiding nontransparent client/server negotiations.

If this option is set, the default curves list built into OpenSSL are ignored.