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 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2016 Amaury Pouly
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "crypto.h"
+#include "misc.h"
+
+static enum crypto_method_t g_cur_method = CRYPTO_NONE;
+static byte g_key[16];
+
+int crypto_setup(struct crypto_key_t *key)
+{
+    g_cur_method = key->method;
+    switch(g_cur_method)
+    {
+        case CRYPTO_KEY:
+            memcpy(g_key, key->u.key, 16);
+            return CRYPTO_ERROR_SUCCESS;
+        default:
+            return CRYPTO_ERROR_BADSETUP;
+    }
+}
+
+int crypto_apply(
+    byte *in_data, /* Input data */
+    byte *out_data, /* Output data (or NULL) */
+    int nr_blocks, /* Number of blocks (one block=16 bytes) */
+    byte iv[16], /* Key */
+    byte (*out_cbc_mac)[16], /* CBC-MAC of the result (or NULL) */
+    bool encrypt)
+{
+    if(g_cur_method == CRYPTO_KEY)
+    {
+        cbc_mac(in_data, out_data, nr_blocks, g_key, iv, out_cbc_mac, encrypt);
+        return CRYPTO_ERROR_SUCCESS;
+    }
+    else
+        return CRYPTO_ERROR_BADSETUP;
+}