utils/sbtools/crypto.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2010 Amaury Pouly
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include <stdio.h>
  22 #include <stdint.h>
  23 #include <string.h>
  24
  25 typedef uint8_t byte;
  26
  27 /* aes128.c */
  28 void xor_(byte *a, byte *b, int n);
  29 void EncryptAES(byte *msg, byte *key, byte *c);
  30 void DecryptAES(byte *c, byte *key, byte *m);
  31 void Pretty(byte* b,int len,const char* label);
  32 void cbc_mac(
  33     byte *in_data, /* Input data */
  34     byte *out_data, /* Output data (or NULL) */
  35     int nr_blocks, /* Number of blocks to encrypt/decrypt (one block=16 bytes) */
  36     byte key[16], /* Key */
  37     byte iv[16], /* Initialisation Vector */
  38     byte (*out_cbc_mac)[16], /* CBC-MAC of the result (or NULL) */
  39     int encrypt /* 1 to encrypt, 0 to decrypt */
  40     );
  41
  42 /* crc.c */
  43 uint32_t crc(byte *data, int size);
  44 uint32_t crc_continue(uint32_t previous_crc, byte *data, int size);
  45
  46 /* sha1.c */
  47 struct sha_1_params_t
  48 {
  49     uint32_t hash[5];
  50     uint64_t buffer_nr_bits;
  51     uint32_t w[80];
  52 };
  53
  54 void sha_1_init(struct sha_1_params_t *params);
  55 void sha_1_block(struct sha_1_params_t *params, uint32_t cur_hash[5], byte *data);
  56 void sha_1_update(struct sha_1_params_t *params, byte *buffer, int size);
  57 void sha_1_finish(struct sha_1_params_t *params);
  58 void sha_1_output(struct sha_1_params_t *params, byte *out);