|
HTML rendering created 2026-05-24 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. |
|
|
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | SINCE | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
|
|
|
gnutls_hpke_open(3) gnutls gnutls_hpke_open(3)
gnutls_hpke_open - API function
#include <gnutls/hpke.h>
int gnutls_hpke_open(gnutls_hpke_context_t ctx, const
gnutls_datum_t * aad, const gnutls_datum_t * ciphertext,
gnutls_datum_t * plaintext);
gnutls_hpke_context_t ctx
The HPKE context to use for opening.
const gnutls_datum_t * aad
The associated data (AAD) that was authenticated
during sealing.
const gnutls_datum_t * ciphertext
The ciphertext received from the sender.
gnutls_datum_t * plaintext
A pointer to a gnutls_datum_t structure where the
resulting plaintext will be stored.
This function performs the opening operation of HPKE. It takes the
ciphertext received from the sender and uses the keys and nonces
set up in the HPKE context (after decapsulation) to decrypt the
ciphertext and verify the authentication tag. If the decryption
and authentication are successful, the resulting plaintext is
stored in
plaintext . If the decryption or authentication fails, the
function securely erases any allocated plaintext and returns an
error code.
This function can be used multiple times with the same HPKE
context, but the decapsulation function (gnutls_hpke_decap()) must
be called once before the first call to this function.
aad should be the same AAD that was provided to
gnutls_hpke_seal() on the sender's side.
ciphertext should be the same ciphertext that was generated by
gnutls_hpke_seal() on the sender's side.
The function will allocate memory for the plaintext , and the
caller is responsible for freeing this memory using gnutls_free()
when it is no longer needed.
0 on success, or a negative error code on failure
3.8.13
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
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.
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/
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 fetched from
⟨https://www.gnupg.org/ftp/gcrypt/gnutls/⟩ on 2026-05-24. 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 3.8.13 gnutls_hpke_open(3)
|
HTML rendering created 2026-05-24 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. |
|