Update monet.

crypto/secure_util.cc

Index: crypto/secure_util.cc
diff --git a/crypto/secure_util.cc b/crypto/secure_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3fe8aa961a027e6c0c387585af0b25fd2e722ee1
--- /dev/null
+++ b/crypto/secure_util.cc
@@ -0,0 +1,19 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "crypto/secure_util.h"
+
+namespace crypto {
+
+bool SecureMemEqual(const void* s1, const void* s2, size_t n) {
+  const unsigned char* s1_ptr = reinterpret_cast<const unsigned char*>(s1);
+  const unsigned char* s2_ptr = reinterpret_cast<const unsigned char*>(s2);
+  unsigned char tmp = 0;
+  for (size_t i = 0; i < n; ++i, ++s1_ptr, ++s2_ptr)
+    tmp |= *s1_ptr ^ *s2_ptr;
+  return (tmp == 0);
+}
+
+}  // namespace crypto
+