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CURLOPT_TLS13_CIPHERS(3) curl_easy_setopt options CURLOPT_TLS13_CIPHERS(3)
CURLOPT_TLS13_CIPHERS - specify ciphers suites to use for TLS 1.3
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TLS13_CIPHERS, char
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
syntactically correct, it consists of one or more cipher suite strings
separated by colons.
You'll find more details about cipher lists on this URL:
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
The application does not have to keep the string around after setting
NULL, use internal default
All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
CURL *curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
ret = curl_easy_perform(curl);
Added in 7.61.0. Available when built with OpenSSL >= 1.1.1.
Returns CURLE_OK if supported, CURLE_NOT_BUILT_IN otherwise.
libcurl 7.73.0 June 25, 2020 CURLOPT_TLS13_CIPHERS(3)