CURLOPT_TLS13_CIPHERS - ciphers suites to use for TLS 1.3
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TLS13_CIPHERS, char *list);
CURLOPT_TLS13_CIPHERS(3) curl_easy_setopt options CURLOPT_TLS13_CIPHERS(3) NAME CURLOPT_TLS13_CIPHERS - ciphers suites to use for TLS 1.3 SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TLS13_CIPHERS, char *list); DESCRIPTION Pass a char *, pointing to a null-terminated string holding the list of cipher suites to use for the TLS 1.3 connection. The list must be syn- tactically correct, it consists of one or more cipher suite strings separated by colons. you will find more details about cipher lists on this URL: https://curl.se/docs/ssl-ciphers.html This option is currently used only when curl is built to use OpenSSL 1.1.1 or later. If you are using a different SSL backend you can try setting TLS 1.3 cipher suites by using the CURLOPT_SSL_CIPHER_LIST option. 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_TLS13_CIPHERS, "TLS13-CHACHA20-POLY1305-SHA256"); ret = curl_easy_perform(curl); curl_easy_cleanup(curl); } AVAILABILITY Added in 7.61.0. Available when built with OpenSSL >= 1.1.1. RETURN VALUE Returns CURLE_OK if supported, CURLE_NOT_BUILT_IN otherwise. ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+------------------+ |Availability | web/curl | +---------------+------------------+ |Stability | Uncommitted | +---------------+------------------+ SEE ALSO CURLOPT_SSL_CIPHER_LIST(3), CURLOPT_SSLVERSION(3), CUR- LOPT_PROXY_SSL_CIPHER_LIST(3), CURLOPT_PROXY_TLS13_CIPHERS(3), CUR- LOPT_PROXY_SSLVERSION(3), CURLOPT_USE_SSL(3), NOTES Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://curl.se/down- load/curl-7.83.1.tar.bz2. Further information about this software can be found on the open source community website at http://curl.haxx.se/. libcurl 7.83.1 November 26, 2021 CURLOPT_TLS13_CIPHERS(3)