lib/auth_psk.h

   1 /*
   2  * Copyright (C) 2005, 2007, 2008, 2010 Free Software Foundation, Inc.
   3  *
   4  * Author: Nikos Mavrogiannopoulos
   5  *
   6  * This file is part of GnuTLS.
   7  *
   8  * The GnuTLS is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public License
  10  * as published by the Free Software Foundation; either version 2.1 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  21  * USA
  22  *
  23  */
  24
  25 #ifndef AUTH_PSK_H
  26 #define AUTH_PSK_H
  27
  28 #include <gnutls_auth.h>
  29 #include <auth_dh_common.h>
  30
  31 typedef struct gnutls_psk_client_credentials_st
  32 {
  33   gnutls_datum_t username;
  34   gnutls_datum_t key;
  35   gnutls_psk_client_credentials_function *get_function;
  36 } psk_client_credentials_st;
  37
  38 typedef struct gnutls_psk_server_credentials_st
  39 {
  40   char *password_file;
  41   /* callback function, instead of reading the
  42    * password files.
  43    */
  44   gnutls_psk_server_credentials_function *pwd_callback;
  45
  46   /* For DHE_PSK */
  47   gnutls_dh_params_t dh_params;
  48   /* this callback is used to retrieve the DH or RSA
  49    * parameters.
  50    */
  51   gnutls_params_function *params_func;
  52
  53   /* Identity hint. */
  54   char *hint;
  55 } psk_server_cred_st;
  56
  57 /* these structures should not use allocated data */
  58 typedef struct psk_auth_info_st
  59 {
  60   char username[MAX_USERNAME_SIZE + 1];
  61   dh_info_st dh;
  62   char hint[MAX_USERNAME_SIZE + 1];
  63 } *psk_auth_info_t;
  64
  65
  66 #ifdef ENABLE_PSK
  67
  68 typedef struct psk_auth_info_st psk_auth_info_st;
  69
  70 int
  71 _gnutls_set_psk_session_key (gnutls_session_t session, gnutls_datum_t* key, gnutls_datum_t * psk2);
  72
  73 int _gnutls_find_psk_key( gnutls_session_t session, gnutls_psk_client_credentials_t cred,
  74   gnutls_datum_t * username, gnutls_datum* key, int* free);
  75
  76 #else
  77 #define _gnutls_set_psk_session_key(x,y) GNUTLS_E_INTERNAL_ERROR
  78 #endif /* ENABLE_PSK */
  79
  80 #endif