---
name: "gnutls_cipher_suite_info"
section: "3"
platform: "linux"
package: "gnutls"
version: "3.8.13-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gnutls_cipher_suite_info"
---

# gnutls\_cipher\_suite\_info(3)

API function

## NAME

gnutls\_cipher\_suite\_info - API function

## SYNOPSIS

**#include \<gnutls/gnutls.h\>**

**const char \* gnutls\_cipher\_suite\_info(size\_t** *idx***, unsigned char \*** *cs\_id***, gnutls\_kx\_algorithm\_t \*** *kx***, gnutls\_cipher\_algorithm\_t \*** *cipher***, gnutls\_mac\_algorithm\_t \*** *mac***, gnutls\_protocol\_t \*** *min\_version***);**

## ARGUMENTS

- size\_t idx

  index of cipher suite to get information about, starts on 0.

- unsigned char \* cs\_id

  output buffer with room for 2 bytes, indicating cipher suite value

- gnutls\_kx\_algorithm\_t \* kx

  output variable indicating key exchange algorithm, or **NULL**.

- gnutls\_cipher\_algorithm\_t \* cipher

  output variable indicating cipher, or **NULL**.

- gnutls\_mac\_algorithm\_t \* mac

  output variable indicating MAC algorithm, or **NULL**.

- gnutls\_protocol\_t \* min\_version

  output variable indicating TLS protocol version, or **NULL**.

## DESCRIPTION

Get information about supported cipher suites.  Use the function iteratively to get information about all supported cipher suites. Call with idx=0 to get information about first cipher suite, then idx=1 and so on until the function returns NULL.

## RETURNS

the name of  *idx* cipher suite, and set the information about the cipher suite in the output variables.  If  *idx* is out of bounds, **NULL** is returned.

## REPORTING BUGS

Report bugs to \<bugs@gnutls.org\>.\
 Home page: https://www.gnutls.org

## COPYRIGHT

Copyright © 2001-2023 Free Software Foundation, Inc., and others.\
 Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.

## SEE ALSO

The full documentation for **gnutls** is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit

- https://www.gnutls.org/manual/