src/libstrongswan/plugins/sha1/sha1_hasher.h

   1 /*
   2  * Copyright (C) 2005-2008 Martin Willi
   3  * Copyright (C) 2005 Jan Hutter
   4  * Hochschule fuer Technik Rapperswil
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or (at your
   9  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * for more details.
  15  */
  16
  17 /**
  18  * @defgroup sha1_hasher sha1_hasher
  19  * @{ @ingroup sha1_p
  20  */
  21
  22 #ifndef SHA1_HASHER_H_
  23 #define SHA1_HASHER_H_
  24
  25 typedef struct sha1_hasher_t sha1_hasher_t;
  26 typedef struct sha1_keyed_prf_t sha1_keyed_prf_t;
  27
  28 #include <crypto/hashers/hasher.h>
  29 #include <crypto/prfs/prf.h>
  30
  31 /**
  32  * Implementation of hasher_t interface using the SHA1 algorithm.
  33  */
  34 struct sha1_hasher_t {
  35
  36         /**
  37          * Implements hasher_t interface.
  38          */
  39         hasher_t hasher_interface;
  40 };
  41
  42 /**
  43  * Implementation of prf_t interface using keyed SHA1 algorithm (used for EAP-AKA).
  44  */
  45 struct sha1_keyed_prf_t {
  46
  47         /**
  48          * Implements prf_t interface.
  49          */
  50         prf_t prf_interface;
  51 };
  52
  53 /**
  54  * Creates a new sha1_hasher_t.
  55  *
  56  * @param algo          algorithm, must be HASH_SHA1
  57  * @return                      sha1_hasher_t object
  58  */
  59 sha1_hasher_t *sha1_hasher_create(hash_algorithm_t algo);
  60
  61 /**
  62  * Creates a new sha1_keyed_prf_t.
  63  *
  64  * @param algo          algorithm, must be PRF_KEYED_SHA1
  65  * @return                      sha1_keyed_prf_tobject
  66  */
  67 sha1_keyed_prf_t *sha1_keyed_prf_create(pseudo_random_function_t algo);
  68
  69 #endif /*SHA1_HASHER_H_ @}*/