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NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | SINCE | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
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gnutls_hpke_seal(3) gnutls gnutls_hpke_seal(3)
gnutls_hpke_seal - API function
#include <gnutls/hpke.h>
int gnutls_hpke_seal(gnutls_hpke_context_t ctx, const
gnutls_datum_t * aad, const gnutls_datum_t * plaintext,
gnutls_datum_t * ciphertext);
gnutls_hpke_context_t ctx
The HPKE context to use for sealing.
const gnutls_datum_t * aad
The associated data (AAD) to be authenticated but not
encrypted.
const gnutls_datum_t * plaintext
The plaintext data to be encrypted and authenticated.
gnutls_datum_t * ciphertext
A pointer to a gnutls_datum_t structure where the
resulting ciphertext will be stored.
This function performs the sealing operation of HPKE. It encrypts
the plaintext and computes an authentication tag using the AEAD
algorithm specified in the HPKE context. The resulting ciphertext
includes both the encrypted plaintext and the authentication tag.
This function can be used multiple times with the same HPKE
context, but the encapsulation function (gnutls_hpke_encap()) must
be called once before the first call to this function to set up
the necessary keys and nonces in the context. Each call to this
function will increment the sequence number in the context, which
is used to derive unique nonces for each encryption operation.
The function will allocate memory for the ciphertext , 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_seal(3)
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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. |
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