gnutls_hkdf_expand(3) gnutls gnutls_hkdf_expand(3)
NAME
gnutls_hkdf_expand - API function
SYNOPSIS
#include <gnutls/crypto.h>
int gnutls_hkdf_expand(gnutls_mac_algorithm_t mac, const gnutls_datum_t
* key, const gnutls_datum_t * info, void * output, size_t length);
ARGUMENTS
gnutls_mac_algorithm_t mac
the mac algorithm used internally
const gnutls_datum_t * key
the pseudorandom key created with HKDF-Extract
const gnutls_datum_t * info
the optional informational data
void * output
the output value of the expand operation
size_t length
the desired length of the output key
DESCRIPTION
This function will derive a variable length keying material from the
pseudorandom key using the HKDF-Expand function as defined in RFC 5869.
RETURNS
Zero or a negative error code on error.
SINCE
3.6.13
REPORTING BUGS
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
COPYRIGHT
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
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/
gnutls 3.8.9 gnutls_hkdf_expand(3)
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