man7.org > Linux > man-pages

Linux/UNIX system programming training

gnutls_cipher_decrypt2(3) — Linux manual page

NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | SINCE | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON 

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
       gnutls_cipher_tag().

RETURNS         top

       Zero or a negative error code on error.

SINCE         top

       2.12.0

REPORTING BUGS         top

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

COPYRIGHT         top

       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         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

       https://www.gnutls.org/manual/

COLOPHON         top

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at
       ⟨http://www.gnutls.org/⟩.  If you have a bug report for this
       manual page, send it to bugs@gnutls.org.  This page was obtained
       from the tarball gnutls-3.8.5.tar.xz fetched from
       ⟨http://www.gnutls.org/download.html⟩ on 2024-06-14.  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 to man-pages@man7.org

gnutls                            3.8.5        gnutls_cipher_decrypt2(3)

HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface.

For details of in-depth Linux/UNIX system programming training courses that I teach, look here.

Hosting by jambit GmbH.

Cover of TLPI