gnutls_prf_raw

gnutls_prf_raw(3)                    gnutls                    gnutls_prf_raw(3)



NAME
       gnutls_prf_raw - API function

SYNOPSIS
       #include <gnutls/gnutls.h>

       int gnutls_prf_raw(gnutls_session_t session, size_t label_size, const
       char * label, size_t seed_size, const char * seed, size_t outsize, char *
       out);

ARGUMENTS
       gnutls_session_t session
                   is a gnutls_session_t type.

       size_t label_size
                   length of the  label variable.

       const char * label
                   label used in PRF computation, typically a short string.

       size_t seed_size
                   length of the  seed variable.

       const char * seed
                   optional extra data to seed the PRF with.

       size_t outsize
                   size of pre-allocated output buffer to hold the output.

       char * out  pre-allocated buffer to hold the generated data.

DESCRIPTION
       Apply the TLS Pseudo-Random-Function (PRF) on the master secret and the
       provided data.

       The  label variable usually contains a string denoting the purpose for
       the generated data.  The  seed usually contains data such as the client
       and server random, perhaps together with some additional data that is
       added to guarantee uniqueness of the output for a particular purpose.

       Because the output is not guaranteed to be unique for a particular
       session unless  seed includes the client random and server random fields
       (the PRF would output the same data on another connection resumed from
       the first one), it is not recommended to use this function directly.  The
       gnutls_prf() function seeds the PRF with the client and server random
       fields directly, and is recommended if you want to generate pseudo random
       data unique for each session.

RETURNS
       GNUTLS_E_SUCCESS on success, or an error code.

REPORTING BUGS
       Report bugs to <bugs@gnutls.org>.
       Home page: http://www.gnutls.org


COPYRIGHT
       Copyright © 2001-2016 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

       http://www.gnutls.org/manual/

gnutls                               3.4.11                    gnutls_prf_raw(3)