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gnutls_srp_set_server_credentials_function
Section: gnutls (3)
Updated: 2.10.2
Index
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NAME
gnutls_srp_set_server_credentials_function - API function
SYNOPSIS
#include <gnutls/gnutls.h>
void gnutls_srp_set_server_credentials_function(gnutls_srp_server_credentials_t cred, gnutls_srp_server_credentials_function * func);
ARGUMENTS
- gnutls_srp_server_credentials_t cred
-
is a gnutls_srp_server_credentials_t structure.
- gnutls_srp_server_credentials_function * func
-
is the callback function
DESCRIPTION
This function can be used to set a callback to retrieve the user's
SRP credentials. The callback's function form is:
int (*callback)(gnutls_session_t, const char* username,
gnutls_datum_t* salt, gnutls_datum_t *verifier, gnutls_datum_t* g,
gnutls_datum_t* n);
username contains the actual username.
The salt, verifier, generator and prime must be filled
in using the gnutls_malloc(). For convenience prime and generator
may also be one of the static parameters defined in extra.h.
In case the callback returned a negative number then gnutls will
assume that the username does not exist.
In order to prevent attackers from guessing valid usernames,
if a user does not exist, g and n values should be filled in
using a random user's parameters. In that case the callback must
return the special value (1).
The callback function will only be called once per handshake.
The callback function should return 0 on success, while
-1 indicates an error.
REPORTING BUGS
Report bugs to <bug-gnutls@gnu.org>.
GnuTLS home page: http://www.gnu.org/software/gnutls/
General help using GNU software: http://www.gnu.org/gethelp/
COPYRIGHT
Copyright © 2008 Free Software Foundation.
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
info
and
gnutls
programs are properly installed at your site, the command
-
info gnutls
should give you access to the complete manual.
Index
- NAME
-
- SYNOPSIS
-
- ARGUMENTS
-
- DESCRIPTION
-
- REPORTING BUGS
-
- COPYRIGHT
-
- SEE ALSO
-
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