@deftypefun {int} {gnutls_cipher_decrypt} (gnutls_cipher_hd_t @var{handle}, void * @var{ctext}, size_t @var{ctext_len})
@var{handle}: is a @code{gnutls_cipher_hd_t}  type

@var{ctext}: the data to decrypt

@var{ctext_len}: the length of data to decrypt

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 @code{gnutls_cipher_tag()} .

@strong{Returns:} Zero or a negative error code on error.

@strong{Since:} 2.10.0
@end deftypefun