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gnutls_hmac_copy(3) — Linux manual page

gnutls_hmac_copy(3)               gnutlsgnutls_hmac_copy(3)

NAME        top

       gnutls_hmac_copy - API function

SYNOPSIS        top

#include <gnutls/crypto.h>gnutls_hmac_hd_t gnutls_hmac_copy(gnutls_hmac_hd_thandle);

ARGUMENTS        top

       gnutls_hmac_hd_t handle                   is agnutls_hmac_hd_ttype

DESCRIPTION        top

       This function will create a copy of MAC context, containing all       its current state. Copying contexts for MACs registered usinggnutls_crypto_register_mac()is not supported and will always       result in an error. In addition to that, some of the MAC       implementations do not support this operation. Applications should       check the return value and provide a proper fallback.

RETURNS        top

       new MAC context or NULL in case of an error.

SINCE        top

       3.6.9

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 forgnutlsis maintained as a Texinfo       manual.  If the /usr/share/doc/gnutls/ directory does not contain       the HTML form visithttps://www.gnutls.org/manual/

COLOPHON        top

       This page is part of theGnuTLS (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 2025-08-11.  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 isnot part of the original manual page),       send a mail to man-pages@man7.orggnutls                            3.8.10gnutls_hmac_copy(3)

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