[Peripheral/Security] DS peripheral driver

components/hal/ds_hal.c

@@ -0,0 +1,75 @@
+// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "hal/systimer_hal.h"
+#include "hal/ds_hal.h"
+#include "hal/ds_ll.h"
+
+void ds_hal_start(void)
+{
+    ds_ll_start();
+}
+
+void ds_hal_finish(void)
+{
+    ds_ll_finish();
+}
+
+ds_key_check_t ds_hal_check_decryption_key(void)
+{
+    uint64_t start_time = systimer_hal_get_time(SYSTIMER_COUNTER_0);
+    while (ds_ll_busy() != 0) {
+        if ((systimer_hal_get_time(SYSTIMER_COUNTER_0) - start_time) > DS_KEY_CHECK_MAX_WAIT_US) {
+            return ds_ll_key_error_source();
+        }
+    }
+
+    return DS_KEY_INPUT_OK;
+}
+
+void ds_hal_configure_iv(const uint32_t *iv)
+{
+    ds_ll_configure_iv(iv);
+}
+
+void ds_hal_write_message(const uint8_t *msg, size_t size)
+{
+    ds_ll_write_message(msg, size);
+}
+
+void ds_hal_write_private_key_params(const uint8_t *key_params)
+{
+    ds_ll_write_private_key_params(key_params);
+}
+
+void ds_hal_start_sign(void)
+{
+    ds_ll_start_sign();
+}
+
+bool ds_hal_busy(void)
+{
+    return ds_ll_busy();
+}
+
+ds_signature_check_t ds_hal_read_result(uint8_t *result, size_t size)
+{
+    ds_signature_check_t check_result = ds_ll_check_signature();
+
+    if (check_result == DS_SIGNATURE_OK || check_result == DS_SIGNATURE_PADDING_FAIL) {
+        ds_ll_read_result(result, size);
+    }
+
+    return check_result;
+}