Add KBOOT.

apps/elftosb/common/RijndaelCBCMAC.cpp

@@ -0,0 +1,85 @@
+/*
+ * File:	RijndaelCBCMAC.cpp
+ *
+ * Copyright (c) Freescale Semiconductor, Inc. All rights reserved.
+ * See included license file for license details.
+ */
+
+#include "RijndaelCBCMAC.h"
+#include "rijndael.h"
+#include <assert.h>
+#include "Logging.h"
+
+void logHexArray(Logger::log_level_t level, const uint8_t *bytes, unsigned count);
+
+//! \param key The key to use as the CBC-MAC secret.
+//! \param iv Initialization vector. Defaults to zero if not provided.
+RijndaelCBCMAC::RijndaelCBCMAC(const AESKey<128> &key, const uint8_t *iv)
+    : m_key(key)
+{
+    if (iv)
+    {
+        memcpy(m_mac, iv, sizeof(m_mac));
+    }
+    else
+    {
+        memset(m_mac, 0, sizeof(m_mac));
+    }
+}
+
+//! \param data Pointer to data to process.
+//! \param length Number of bytes to process. Must be evenly divisible by #BLOCK_SIZE.
+void RijndaelCBCMAC::update(const uint8_t *data, unsigned length)
+{
+    assert(length % BLOCK_SIZE == 0);
+    unsigned blocks = length / BLOCK_SIZE;
+    while (blocks--)
+    {
+        updateOneBlock(data);
+        data += BLOCK_SIZE;
+    }
+}
+
+//! It appears that some forms of CBC-MAC encrypt the final output block again in
+//! order to protect against a plaintext attack. This method is a placeholder for
+//! such an operation, but it currently does nothing.
+void RijndaelCBCMAC::finalize()
+{
+}
+
+//! On entry the current value of m_mac becomes the initialization vector
+//! for the CBC encryption of this block. The output of the encryption then
+//! becomes the new MAC, which is stored in m_mac.
+void RijndaelCBCMAC::updateOneBlock(const uint8_t *data)
+{
+    Rijndael cipher;
+    cipher.init(Rijndael::CBC, Rijndael::Encrypt, m_key, Rijndael::Key16Bytes, m_mac);
+    cipher.blockEncrypt(data, BLOCK_SIZE * 8, m_mac); // size is in bits
+
+    //	Log::log(Logger::DEBUG2, "CBC-MAC output block:\n");
+    //	logHexArray(Logger::DEBUG2, (const uint8_t *)&m_mac, sizeof(m_mac));
+}
+
+/*!
+ * \brief Log an array of bytes as hex.
+ */
+void logHexArray(Logger::log_level_t level, const uint8_t *bytes, unsigned count)
+{
+    Log::SetOutputLevel leveler(level);
+    //		Log::log("    ");
+    unsigned i;
+    for (i = 0; i < count; ++i, ++bytes)
+    {
+        if ((i % 16 == 0) && (i < count - 1))
+        {
+            if (i != 0)
+            {
+                Log::log("\n");
+            }
+            Log::log("    0x%04x: ", i);
+        }
+        Log::log("%02x ", *bytes & 0xff);
+    }
+
+    Log::log("\n");
+}