curl/docs/libcurl/opts/CURLOPT_SSL_EC_CURVES.md
Daniel Gustafsson 8d67c61c47 curldown: Fix email address in Copyright
The curldown conversion accidentally replaced daniel@haxx.se with
just daniel.se.  This reverts back to the proper email address in
the curldown docs as well as in a few other stray places where it
was incorrect (while unrelated to curldown).

Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Closes: #12997
2024-02-28 11:28:10 +01:00

1.2 KiB

c SPDX-License-Identifier Title Section Source See-also
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. curl CURLOPT_SSL_EC_CURVES 3 libcurl
CURLOPT_SSL_CIPHER_LIST (3)
CURLOPT_SSL_OPTIONS (3)
CURLOPT_TLS13_CIPHERS (3)

NAME

CURLOPT_SSL_EC_CURVES - key exchange curves

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_EC_CURVES, char *alg_list);

DESCRIPTION

Pass a string as parameter with a colon delimited list of (EC) algorithms. This option defines the client's key exchange algorithms in the SSL handshake (if the SSL backend libcurl is built to use supports it).

DEFAULT

"", embedded in SSL backend

PROTOCOLS

HTTP

EXAMPLE

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
    curl_easy_setopt(curl, CURLOPT_SSL_EC_CURVES, "X25519:P-521");
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}

AVAILABILITY

Added in 7.73.0. Supported by the OpenSSL backend.

RETURN VALUE

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.