gnutls\_cipher\_get\_key\_size(3) gnutls gnutls\_cipher\_get\_key\_size(3)

# [NAME](#NAME)

gnutls\_cipher\_get\_key\_size - API function

# [SYNOPSIS](#SYNOPSIS)

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

**size\_t gnutls\_cipher\_get\_key\_size(gnutls\_cipher\_algorithm\_t algorithm);**

# [ARGUMENTS](#ARGUMENTS)

[gnutls\_cipher\_algorithm\_t algorithm](#gnutls_cipher_algorithm_t)

is an encryption algorithm

# [DESCRIPTION](#DESCRIPTION)

This function returns the key size of the provided algorithm.

# [RETURNS](#RETURNS)

length (in bytes) of the given cipher's key size, or 0 if the given cipher is invalid.

# [REPORTING BUGS](#REPORTING_BUGS)

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

# [COPYRIGHT](#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](#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/](https://www.gnutls.org/manual/)

3.8.13 gnutls

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Document: gnutls_cipher_get_key_size(3) from gnutls 3.8.13-r1 (Chainguard OS)
Source: https://gitlab.com/gnutls/gnutls