CURLOPT_SSL_EC_CURVES

Section: curl_easy_setopt options (3)
Updated: November 04, 2020
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NAME

CURLOPT_SSL_EC_CURVES - set 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

CURL *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);
}
 

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.  

SEE ALSO

CURLOPT_SSL_OPTIONS(3), CURLOPT_SSL_CIPHER_LIST(3), CURLOPT_TLS13_CIPHERS(3),


 

Index

NAME
SYNOPSIS
DESCRIPTION
DEFAULT
PROTOCOLS
EXAMPLE
AVAILABILITY
RETURN VALUE
SEE ALSO