gnutls_srp_set_server_credentials_function

gnutls_srp_set_server_credentials_function - Used to set a callback to retrieve the user's SRP credentials

#include <gnutls/gnutls.h> I void gnutls_srp_set_server_credentials_function(gnutls_srp_server_credentials_t cred , gnutls_srp_server_credentials_function * func );

"gnutls_srp_server_credentials_t is a gnutls_srp_server_credentials_t structure.

"gnutls_srp_server_credentials_function is the callback function

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.

Report bugs to <bug-gnutls@gnu.org>.

Copyright 2006 Free Software Foundation.
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