cc3200: Add uhashlib. Supports SHA1 and SHA256.

1 files changed, 77 insertions, 0 deletions

diff --git a/cc3200/util/cryptohash.c b/cc3200/util/cryptohash.c
new file mode 100644
index 000000000..7625413bb
--- /dev/null
+++ b/cc3200/util/cryptohash.c
@@ -0,0 +1,77 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015 Daniel Campora
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "inc/hw_types.h"
+#include "inc/hw_ints.h"
+#include "inc/hw_nvic.h"
+#include "inc/hw_shamd5.h"
+#include "inc/hw_dthe.h"
+#include "hw_memmap.h"
+#include "rom_map.h"
+#include "prcm.h"
+#include "shamd5.h"
+#include "cryptohash.h"
+
+
+/******************************************************************************
+ DEFINE PUBLIC FUNCTIONS
+ ******************************************************************************/
+__attribute__ ((section (".boot")))
+void CRYPTOHASH_Init (void) {
+    // Enable the Data Hashing and Transform Engine
+    MAP_PRCMPeripheralClkEnable(PRCM_DTHE, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
+    MAP_PRCMPeripheralReset(PRCM_DTHE);
+}
+
+void CRYPTOHASH_SHAMD5Start (uint32_t algo, uint32_t blocklen) {
+    // wait until the context is ready
+    while ((HWREG(SHAMD5_BASE + SHAMD5_O_IRQSTATUS) & SHAMD5_INT_CONTEXT_READY) == 0);
+
+    // Configure the SHA/MD5 module algorithm
+    MAP_SHAMD5ConfigSet(SHAMD5_BASE, algo);
+
+    // if not a multiple of 64 bytes, close the hash
+    if (blocklen % 64) {
+        HWREG(SHAMD5_BASE + SHAMD5_O_MODE) |= SHAMD5_MODE_CLOSE_HASH;
+    }
+
+    // set the lenght
+    HWREG(SHAMD5_BASE + SHAMD5_O_LENGTH) = blocklen;
+}
+
+void CRYPTOHASH_SHAMD5Update (uint8_t *data, uint32_t datalen) {
+    // write the data
+    SHAMD5DataWriteMultiple(data, datalen);
+}
+
+void CRYPTOHASH_SHAMD5Read (uint8_t *hash) {
+    // wait for the output to be ready
+    while((HWREG(SHAMD5_BASE + SHAMD5_O_IRQSTATUS) & SHAMD5_INT_OUTPUT_READY) == 0);
+    // read the result
+    MAP_SHAMD5ResultRead(SHAMD5_BASE, hash);
+}