Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 1 | /*************************************************************************** |
| 2 | * __________ __ ___. |
| 3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| 4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| 5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| 6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| 7 | * \/ \/ \/ \/ \/ |
| 8 | * $Id$ |
| 9 | * |
| 10 | * Copyright (C) 2012 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 "mg.h" |
| 22 | #include <crypto++/cryptlib.h> |
| 23 | #include <crypto++/modes.h> |
| 24 | #include <crypto++/des.h> |
| 25 | #include <crypto++/aes.h> |
| 26 | #include <stdio.h> |
| 27 | |
| 28 | using namespace CryptoPP; |
| 29 | namespace |
| 30 | { |
| 31 | ECB_Mode< DES >::Decryption g_dec; |
| 32 | ECB_Mode< DES >::Encryption g_enc; |
| 33 | |
| 34 | inline int dec_des_ecb(void *in, int size, void *out, uint8_t *key) |
| 35 | { |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 36 | if(size % 8) |
| 37 | return 42; |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 38 | g_dec.SetKey(key, 8); |
| 39 | g_dec.ProcessData((byte*)out, (byte*)in, size); |
| 40 | return 0; |
| 41 | } |
| 42 | |
| 43 | inline int enc_des_ecb(void *in, int size, void *out, uint8_t *key) |
| 44 | { |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 45 | if(size % 8) |
| 46 | return 42; |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 47 | g_enc.SetKey(key, 8); |
| 48 | g_enc.ProcessData((byte*)out, (byte*)in, size); |
| 49 | return 0; |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | int mg_decrypt_fw(void *in, int size, void *out, uint8_t *key) |
| 54 | { |
| 55 | return dec_des_ecb(in, size, out, key); |
| 56 | } |
| 57 | |
| 58 | int mg_encrypt_fw(void *in, int size, void *out, uint8_t *key) |
| 59 | { |
| 60 | return enc_des_ecb(in, size, out, key); |
| 61 | } |
| 62 | |
| 63 | int mg_decrypt_pass(void *in, int size, void *out, uint8_t *key) |
| 64 | { |
| 65 | return dec_des_ecb(in, size, out, key); |
| 66 | } |
| 67 | |
| 68 | int mg_encrypt_pass(void *in, int size, void *out, uint8_t *key) |
| 69 | { |
| 70 | return enc_des_ecb(in, size, out, key); |
| 71 | } |