1 files changed, 48 insertions, 0 deletions
diff --git a/components/os_crypt/os_crypt.h b/components/os_crypt/os_crypt.h
new file mode 100644
index 0000000..a75ccf9
--- /dev/null
+++ b/components/os_crypt/os_crypt.h
@@ -0,0 +1,48 @@
+// Copyright 2014 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 COMPONENTS_OS_CRYPT_OS_CRYPT_H_
+#define COMPONENTS_OS_CRYPT_OS_CRYPT_H_
+
+#include <string>
+
+#include "base/strings/string16.h"
+
+// The OSCrypt class gives access to simple encryption and decryption of
+// strings. Note that on Mac, access to the system Keychain is required and
+// these calls can block the current thread to collect user input.
+class OSCrypt {
+ public:
+  // Encrypt a string16. The output (second argument) is really an array of
+  // bytes, but we're passing it back as a std::string.
+  static bool EncryptString16(const base::string16& plaintext,
+                              std::string* ciphertext);
+
+  // Decrypt an array of bytes obtained with EncryptString16 back into a
+  // string16. Note that the input (first argument) is a std::string, so you
+  // need to first get your (binary) data into a string.
+  static bool DecryptString16(const std::string& ciphertext,
+                              base::string16* plaintext);
+
+  // Encrypt a string.
+  static bool EncryptString(const std::string& plaintext,
+                            std::string* ciphertext);
+
+  // Decrypt an array of bytes obtained with EnctryptString back into a string.
+  // Note that the input (first argument) is a std::string, so you need to first
+  // get your (binary) data into a string.
+  static bool DecryptString(const std::string& ciphertext,
+                            std::string* plaintext);
+
+#if defined(OS_MACOSX)
+  // For unit testing purposes we instruct the Encryptor to use a mock Keychain
+  // on the Mac. The default is to use the real Keychain.
+  static void UseMockKeychain(bool use_mock);
+#endif
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(OSCrypt);
+};
+
+#endif  // COMPONENTS_OS_CRYPT_OS_CRYPT_H_