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CURLOPT_SSL_CIPHER_LIST(3) curl_easy_setopt options CURLOPT_SSL_CIPHER_LIST(3)




NAME

       CURLOPT_SSL_CIPHER_LIST - specify ciphers to use for TLS


SYNOPSIS

       #include <curl/curl.h>

       CURLcode  curl_easy_setopt(CURL  *handle, CURLOPT_SSL_CIPHER_LIST, char
       *list);


DESCRIPTION

       Pass a char *, pointing to a zero terminated string holding the list of
       ciphers  to  use for the SSL connection. The list must be syntactically
       correct, it consists of one or more cipher strings separated by colons.
       Commas or spaces are also acceptable separators but colons are normally
       used, !, - and + can be used as operators.

       For  OpenSSL  and  GnuTLS  valid  examples  of  cipher  lists   include
       'RC4-SHA',  'SHA1+DES', 'TLSv1' and 'DEFAULT'. The default list is nor-
       mally set when you compile OpenSSL.

       You'll find more details about cipher lists on this URL:

        https://www.openssl.org/docs/apps/ciphers.html

       For NSS, valid examples  of  cipher  lists  include  'rsa_rc4_128_md5',
       'rsa_aes_128_sha',  etc.  With NSS you don't add/remove ciphers. If one
       uses this option then all known ciphers are  disabled  and  only  those
       passed in are enabled.

       For  WolfSSL,  valid  examples  of  cipher  lists  include  'ECDHE-RSA-
       RC4-SHA', 'AES256-SHA:AES256-SHA256', etc.

       The application does not have to keep the string around  after  setting
       this option.


DEFAULT

       NULL, use internal default


PROTOCOLS

       All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.


EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
         curl_easy_setopt(curl, CURLOPT_SSL_CIPHER_LIST, "TLSv1");
         ret = curl_easy_perform(curl);
         curl_easy_cleanup(curl);
       }


AVAILABILITY

       If built TLS enabled.


RETURN VALUE

       Returns  CURLE_OK  if TLS is supported, CURLE_UNKNOWN_OPTION if not, or
       CURLE_OUT_OF_MEMORY if there was insufficient heap space.


SEE ALSO

       CURLOPT_TLS13_CIPHERS(3),          CURLOPT_SSLVERSION(3),          CUR-
       LOPT_PROXY_SSL_CIPHER_LIST(3),   CURLOPT_PROXY_TLS13_CIPHERS(3),   CUR-
       LOPT_USE_SSL(3),



libcurl 7.62.0                 October 10, 2018     CURLOPT_SSL_CIPHER_LIST(3)

curl 7.62.0 - Generated Sat Nov 3 07:27:11 CDT 2018
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