gnutls_hkdf_extract(3)              gnutls              gnutls_hkdf_extract(3)

NAME
       gnutls_hkdf_extract - API function

SYNOPSIS
       #include <gnutls/crypto.h>

       int gnutls_hkdf_extract(gnutls_mac_algorithm_t mac, const
       gnutls_datum_t * key, const gnutls_datum_t * salt, void * output);

ARGUMENTS
       gnutls_mac_algorithm_t mac
                   the mac algorithm used internally

       const gnutls_datum_t * key
                   the initial keying material

       const gnutls_datum_t * salt
                   the optional salt

       void * output
                   the output value of the extract operation

DESCRIPTION
       This function will derive a fixed-size key using the HKDF-Extract
       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 (C) 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                               3.8.5              gnutls_hkdf_extract(3)