V1.0.5

packages/third-party/mbedtls/ports/src/tls_hardware.c

@@ -0,0 +1,65 @@
+/*
+ *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  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.
+ *
+ *  This file is part of mbed TLS (https://tls.mbed.org)
+ */
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "mbedtls/config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+
+static int os_get_random(unsigned char *buf, size_t len)
+{
+    int i, j;
+    unsigned long tmp;
+
+    for (i = 0; i < ((len + 3) & ~3) / 4; i++)
+    {
+        tmp = rand();
+
+        for (j = 0; j < 4; j++)
+        {
+            if ((i * 4 + j) < len)
+            {
+                buf[i * 4 + j] = (unsigned char)(tmp >> (j * 8));
+            } 
+            else 
+            {
+                break;
+            }
+        }
+    }
+
+    return 0;
+}
+
+int mbedtls_hardware_poll( void *data, unsigned char *output, size_t len, size_t *olen )
+{
+    os_get_random(output, len);
+    *olen = len;
+
+    return 0;
+}
+#endif
+