Nigel Rantor / azure_c_shared_utility

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Diff: hmacsha256.c

Revision:
0:fa2de1b79154
Child:
19:2e0811512ceb
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hmacsha256.c	Fri Apr 08 12:01:36 2016 -0700
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+#include <stdlib.h>
+#ifdef _CRTDBG_MAP_ALLOC
+#include <crtdbg.h>
+#endif
+#include "azure_c_shared_utility/gballoc.h"
+
+#include "azure_c_shared_utility/hmacsha256.h"
+#include "azure_c_shared_utility/hmac.h"
+#include "azure_c_shared_utility/strings.h"
+
+HMACSHA256_RESULT HMACSHA256_ComputeHash(const unsigned char* key, size_t keyLen, const unsigned char* payload, size_t payloadLen, BUFFER_HANDLE hash)
+{
+    HMACSHA256_RESULT result;
+
+    if (key == NULL ||
+        keyLen == 0 ||
+        payload == NULL ||
+        payloadLen == 0 ||
+        hash == NULL)
+    {
+        result = HMACSHA256_INVALID_ARG;
+    }
+    else
+    {
+        if ((BUFFER_enlarge(hash, 32) != 0) ||
+            (hmac(SHA256, payload, (int)payloadLen, key, (int)keyLen, BUFFER_u_char(hash) ) != 0))
+        {
+            result = HMACSHA256_ERROR;
+        }
+        else
+        {
+            result = HMACSHA256_OK;
+        }
+    }
+
+    return result;
+}