CURLOPT_SSL_EC_CURVES(3) Library Functions Manual CURLOPT_SSL_EC_CURVES(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
This functionality affects all TLS based protocols: HTTPS, FTPS, IMAPS,
POP3S, SMTPS etc.
This option works only with the following TLS backends: OpenSSL and
wolfSSL
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 curl 7.73.0
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
if not.
SEE ALSO
CURLOPT_SSL_CIPHER_LIST(3), CURLOPT_SSL_OPTIONS(3),
CURLOPT_TLS13_CIPHERS(3)
libcurl 2024-08-05 CURLOPT_SSL_EC_CURVES(3)
curl 8.9.1 - Generated Mon Aug 12 12:42:48 CDT 2024