gnutls\_mac\_get\_nonce\_size(3) gnutls gnutls\_mac\_get\_nonce\_size(3)

# [NAME](#NAME)

gnutls\_mac\_get\_nonce\_size - API function

# [SYNOPSIS](#SYNOPSIS)

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

**size\_t gnutls\_mac\_get\_nonce\_size(gnutls\_mac\_algorithm\_t algorithm);**

# [ARGUMENTS](#ARGUMENTS)

[gnutls\_mac\_algorithm\_t algorithm](#gnutls_mac_algorithm_t)

is an encryption algorithm

# [DESCRIPTION](#DESCRIPTION)

Returns the size of the nonce used by the MAC in TLS.

# [RETURNS](#RETURNS)

length (in bytes) of the given MAC nonce size, or 0.

# [SINCE](#SINCE)

3.2.0

# [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_mac_get_nonce_size(3) from gnutls 3.8.13-r1 (Chainguard OS)
Source: https://gitlab.com/gnutls/gnutls