First Publicly Shared Version of ODKiTEE v15

oemcrypto_ta/oemcrypto_endianness.c

@@ -0,0 +1,26 @@
+// Copyright 2020 Google LLC. All Rights Reserved. This file and proprietary
+// source code may only be used and distributed under the Widevine Master
+// License Agreement.
+
+#include "oemcrypto_endianness.h"
+
+#include <stdint.h>
+#include <string.h>
+
+uint32_t HostToNetworkU32(uint32_t host) {
+  uint8_t bytes[] = {
+    (uint8_t)(host >> 24u),
+    (uint8_t)(host >> 16u),
+    (uint8_t)(host >> 8u),
+    (uint8_t)(host >> 0u),
+  };
+
+  uint32_t network;
+  memcpy(&network, bytes, sizeof(network));
+  return network;
+}
+
+uint32_t NetworkToHostU32(uint32_t network) {
+  // These functions are symmetrical on any byte-ordering used in practice.
+  return HostToNetworkU32(network);
+}