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gnutls_prf_raw

Section: gnutls (3)
Updated: 3.3.11
Index Return to Main Contents
 

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 structure.
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 © 2001-2014 Free Software Foundation, Inc..
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/


 

Index

NAME
SYNOPSIS
ARGUMENTS
DESCRIPTION
RETURNS
REPORTING BUGS
COPYRIGHT
SEE ALSO


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