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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 (C) 2001- 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  no-
       tice and	this notice are	preserved.

SEE ALSO
       The  full  documentation	 for gnutls is maintained as a Texinfo manual.
       If the /usr/local/share/doc/gnutls/ directory does not contain the HTML
       form visit

       https://www.gnutls.org/manual/

gnutls				    3.6.15		 gnutls_hkdf_expand(3)

NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | SINCE | REPORTING BUGS | COPYRIGHT | SEE ALSO

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