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+// 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.
+
+#ifndef NET_BASE_ZAP_H_
+#define NET_BASE_ZAP_H_
+
+#include <string>
+#include "base/strings/string16.h"
+
+namespace net {
+
+// Zap functions are used to clear sensitive data in RAM to minimize the
+// time that people can access them once they are written to disk.
+
+// Overwrite a buffer with 0's.
+void ZapBuf(void* buf, size_t buf_len);
+
+// Overwrite a string's internal buffer with 0's.
+void ZapString(std::string* s);
+
+// Overwrite a base::string16's internal buffer with 0's.
+void ZapString(base::string16* s);
+
+} // net
+
+#endif // NET_BASE_ZAP_H_