81 lines
1.8 KiB
Markdown
81 lines
1.8 KiB
Markdown
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---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_TLS13_CIPHERS
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_PROXY_SSLVERSION (3)
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- CURLOPT_PROXY_SSL_CIPHER_LIST (3)
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- CURLOPT_PROXY_TLS13_CIPHERS (3)
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- CURLOPT_SSLVERSION (3)
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- CURLOPT_SSL_CIPHER_LIST (3)
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- CURLOPT_USE_SSL (3)
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---
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# NAME
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CURLOPT_TLS13_CIPHERS - ciphers suites to use for TLS 1.3
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TLS13_CIPHERS, char *list);
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~~~
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# DESCRIPTION
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Pass a char pointer, pointing to a null-terminated string holding the list of
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cipher suites to use for the TLS 1.3 connection. The list must be
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syntactically correct, it consists of one or more cipher suite strings
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separated by colons.
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Find more details about cipher lists on this URL:
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https://curl.se/docs/ssl-ciphers.html
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This option is currently used only when curl is built to use OpenSSL 1.1.1 or
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later, or Schannel. If you are using a different SSL backend you can try
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setting TLS 1.3 cipher suites by using the CURLOPT_SSL_CIPHER_LIST(3)
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option.
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The application does not have to keep the string around after setting this
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option.
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# DEFAULT
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NULL, use internal default
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# PROTOCOLS
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All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
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curl_easy_setopt(curl, CURLOPT_TLS13_CIPHERS,
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"TLS_CHACHA20_POLY1305_SHA256");
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res = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.61.0 for OpenSSL. Available when built with OpenSSL \>= 1.1.1.
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Added in 7.85.0 for Schannel.
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# RETURN VALUE
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Returns CURLE_OK if supported, CURLE_NOT_BUILT_IN otherwise.
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