gnutls\_cipher\_decrypt(3) gnutls gnutls\_cipher\_decrypt(3)

# [NAME](#NAME)

gnutls\_cipher\_decrypt - API function

# [SYNOPSIS](#SYNOPSIS)

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

**int gnutls\_cipher\_decrypt(gnutls\_cipher\_hd\_t handle, void * ctext, size\_t ctext\_len);**

# [ARGUMENTS](#ARGUMENTS)

[gnutls\_cipher\_hd\_t handle](#gnutls_cipher_hd_t)

is a **gnutls\_cipher\_hd\_t** type

[void * ctext](#void)

the data to decrypt

[size\_t ctext\_len](#size_t)

the length of data to decrypt

# [DESCRIPTION](#DESCRIPTION)

This function will decrypt the given data using the algorithm specified by the context.

Note that in AEAD ciphers, this will not check the tag. You will need to compare the tag sent with the value returned from **gnutls\_cipher\_tag()**.

# [RETURNS](#RETURNS)

Zero or a negative error code on error.

# [SINCE](#SINCE)

2.10.0

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