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Diffstat (limited to 'utils/imxtools/sbtools/crypto.cpp')
-rw-r--r-- | utils/imxtools/sbtools/crypto.cpp | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/utils/imxtools/sbtools/crypto.cpp b/utils/imxtools/sbtools/crypto.cpp new file mode 100644 index 0000000000..35068c3e7d --- /dev/null +++ b/utils/imxtools/sbtools/crypto.cpp | |||
@@ -0,0 +1,55 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2016 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 "crypto.h" | ||
22 | #include "misc.h" | ||
23 | |||
24 | static enum crypto_method_t g_cur_method = CRYPTO_NONE; | ||
25 | static byte g_key[16]; | ||
26 | |||
27 | int crypto_setup(struct crypto_key_t *key) | ||
28 | { | ||
29 | g_cur_method = key->method; | ||
30 | switch(g_cur_method) | ||
31 | { | ||
32 | case CRYPTO_KEY: | ||
33 | memcpy(g_key, key->u.key, 16); | ||
34 | return CRYPTO_ERROR_SUCCESS; | ||
35 | default: | ||
36 | return CRYPTO_ERROR_BADSETUP; | ||
37 | } | ||
38 | } | ||
39 | |||
40 | int crypto_apply( | ||
41 | byte *in_data, /* Input data */ | ||
42 | byte *out_data, /* Output data (or NULL) */ | ||
43 | int nr_blocks, /* Number of blocks (one block=16 bytes) */ | ||
44 | byte iv[16], /* Key */ | ||
45 | byte (*out_cbc_mac)[16], /* CBC-MAC of the result (or NULL) */ | ||
46 | bool encrypt) | ||
47 | { | ||
48 | if(g_cur_method == CRYPTO_KEY) | ||
49 | { | ||
50 | cbc_mac(in_data, out_data, nr_blocks, g_key, iv, out_cbc_mac, encrypt); | ||
51 | return CRYPTO_ERROR_SUCCESS; | ||
52 | } | ||
53 | else | ||
54 | return CRYPTO_ERROR_BADSETUP; | ||
55 | } | ||