CURLOPT_SSL_EC_CURVES - Online Linux Manual PageSection : 3
Updated : November 26, 2021
Source : libcurl 7.82.0
Note : curl_easy_setopt options
NAMECURLOPT_SSL_EC_CURVES − key exchange curves
SYNOPSIS#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_EC_CURVES, char *alg_list);
DESCRIPTIONPass 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
PROTOCOLSHTTP
EXAMPLECURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
curl_easy_setopt(curl, CURLOPT_SSL_EC_CURVES, "X25519:P-521");
ret = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
AVAILABILITYAdded in 7.73.0. Supported by the OpenSSL backend.
RETURN VALUEReturns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSOCURLOPT_SSL_OPTIONS(3), CURLOPT_SSL_CIPHER_LIST (3)," CURLOPT_TLS13_CIPHERS(3)," 0
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