1CURLOPT_SSL_EC_CURVES(3)   curl_easy_setopt options   CURLOPT_SSL_EC_CURVES(3)
2
3
4

NAME

6       CURLOPT_SSL_EC_CURVES - key exchange curves
7

SYNOPSIS

9       #include <curl/curl.h>
10
11       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_EC_CURVES, char *alg_list);
12

DESCRIPTION

14       Pass  a  string  as parameter with a colon delimited list of (EC) algo‐
15       rithms. This option defines the client's key exchange algorithms in the
16       SSL handshake (if the SSL backend libcurl is built to use supports it).
17

DEFAULT

19       "", embedded in SSL backend
20

PROTOCOLS

22       HTTP
23

EXAMPLE

25       CURL *curl = curl_easy_init();
26       if(curl) {
27         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
28         curl_easy_setopt(curl, CURLOPT_SSL_EC_CURVES, "X25519:P-521");
29         ret = curl_easy_perform(curl);
30         curl_easy_cleanup(curl);
31       }
32

AVAILABILITY

34       Added in 7.73.0. Supported by the OpenSSL backend.
35

RETURN VALUE

37       Returns  CURLE_OK  if the option is supported, and CURLE_UNKNOWN_OPTION
38       if not.
39

SEE ALSO

41       CURLOPT_SSL_OPTIONS(3),  CURLOPT_SSL_CIPHER_LIST(3),  CURLOPT_TLS13_CI‐
42       PHERS(3),
43
44
45
46libcurl 7.82.0                 November 26, 2021      CURLOPT_SSL_EC_CURVES(3)
Impressum