gnutls_prf_raw — access the TLS PRF directly
#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); |
is a gnutls_session_t structure.
length of the label variable.
label used in PRF computation, typically a short string.
length of the seed variable.
optional extra data to seed the PRF with.
size of pre-allocated output buffer to hold the output.
pre-allocate buffer to hold the generated data.
Apply the TLS Pseudo−Random−Function (PRF) using the master secret on some data.
The label variable
usually contain a string denoting the purpose for the
generated data. The seed usually contain 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 include 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 seed 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.
The full documentation for gnutls is maintained as a Texinfo manual. If the info and gnutls programs are properly installed at your site, the command
info gnutls
should give you access to the complete manual.
| COPYRIGHT |
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Copyright © 2008 Free Software Foundation. Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. |