gnutls_cipher_decrypt2(3)          gnutls          gnutls_cipher_decrypt2(3)

NAME         top

       gnutls_cipher_decrypt2 - API function

SYNOPSIS         top

       #include <gnutls/crypto.h>

       int gnutls_cipher_decrypt2(gnutls_cipher_hd_t handle, const void *
       ctext, size_t ctext_len, void * ptext, size_t ptext_len);

ARGUMENTS         top

       gnutls_cipher_hd_t handle
                   is a gnutls_cipher_hd_t type

       const void * ctext
                   the data to decrypt

       size_t ctext_len
                   the length of data to decrypt

       void * ptext
                   the decrypted data

       size_t ptext_len
                   the available length for decrypted data

DESCRIPTION         top

       This function will decrypt the given data using the algorithm
       specified by the context. For block ciphers the  ctext_len must be a
       multiple of the block size. For the supported ciphers the plaintext
       data length will equal the ciphertext size.

       Note that in AEAD ciphers, this will not check the tag. You will need
       to compare the tag sent with the value returned from

RETURNS         top

       Zero or a negative error code on error.

SINCE         top


REPORTING BUGS         top

       Report bugs to <>.
       Home page:

COPYRIGHT         top

       Copyright © 2001-2018 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         top

       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 

COLOPHON         top

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this manual
       page, send it to  This page was obtained from the
       tarball gnutls-3.6.2.tar.xz fetched from
       ⟨⟩ on 2018-04-30.  If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail

gnutls                              3.6.2          gnutls_cipher_decrypt2(3)