4 files changed, 88 insertions, 0 deletions
diff --git a/components/sync_driver/DEPS b/components/sync_driver/DEPS
index 067cea9..d3a3e4d 100644
--- a/components/sync_driver/DEPS
+++ b/components/sync_driver/DEPS
@@ -1,5 +1,6 @@
 include_rules = [
   # SyncDriver is used by iOS, which does not use content.
   "-content",
+  "+components/webdata/encryptor",
   "+sync",
 ]
diff --git a/components/sync_driver/system_encryptor.cc b/components/sync_driver/system_encryptor.cc
new file mode 100644
index 0000000..74d63fc
--- /dev/null
+++ b/components/sync_driver/system_encryptor.cc
@@ -0,0 +1,23 @@
+// 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.
+
+#include "components/sync_driver/system_encryptor.h"
+
+#include "components/webdata/encryptor/encryptor.h"
+
+namespace browser_sync {
+
+SystemEncryptor::~SystemEncryptor() {}
+
+bool SystemEncryptor::EncryptString(const std::string& plaintext,
+                                    std::string* ciphertext) {
+  return ::Encryptor::EncryptString(plaintext, ciphertext);
+}
+
+bool SystemEncryptor::DecryptString(const std::string& ciphertext,
+                                    std::string* plaintext) {
+  return ::Encryptor::DecryptString(ciphertext, plaintext);
+}
+
+}  // namespace browser_sync
diff --git a/components/sync_driver/system_encryptor.h b/components/sync_driver/system_encryptor.h
new file mode 100644
index 0000000..5552b76
--- /dev/null
+++ b/components/sync_driver/system_encryptor.h
@@ -0,0 +1,27 @@
+// 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_SYNC_DRIVER_SYSTEM_ENCRYPTOR_H_
+#define COMPONENTS_SYNC_DRIVER_SYSTEM_ENCRYPTOR_H_
+
+#include "base/compiler_specific.h"
+#include "sync/util/encryptor.h"
+
+namespace browser_sync {
+
+// Encryptor that uses the Chrome password manager's encryptor.
+class SystemEncryptor : public syncer::Encryptor {
+ public:
+  virtual ~SystemEncryptor();
+
+  virtual bool EncryptString(const std::string& plaintext,
+                             std::string* ciphertext) OVERRIDE;
+
+  virtual bool DecryptString(const std::string& ciphertext,
+                             std::string* plaintext) OVERRIDE;
+};
+
+}  // namespace browser_sync
+
+#endif  // COMPONENTS_SYNC_DRIVER_SYSTEM_ENCRYPTOR_H_
diff --git a/components/sync_driver/system_encryptor_unittest.cc b/components/sync_driver/system_encryptor_unittest.cc
new file mode 100644
index 0000000..a172afa
--- /dev/null
+++ b/components/sync_driver/system_encryptor_unittest.cc
@@ -0,0 +1,37 @@
+// 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.
+
+#include "components/sync_driver/system_encryptor.h"
+
+#include "components/webdata/encryptor/encryptor.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace browser_sync {
+
+namespace {
+
+const char kPlaintext[] = "The Magic Words are Squeamish Ossifrage";
+
+class SystemEncryptorTest : public testing::Test {
+ protected:
+  SystemEncryptor encryptor_;
+};
+
+TEST_F(SystemEncryptorTest, EncryptDecrypt) {
+#if defined(OS_MACOSX)
+  // SystemEncryptor ends up needing access to the keychain on OS X,
+  // so use the mock keychain to prevent prompts.
+  ::Encryptor::UseMockKeychain(true);
+#endif
+  std::string ciphertext;
+  EXPECT_TRUE(encryptor_.EncryptString(kPlaintext, &ciphertext));
+  EXPECT_NE(kPlaintext, ciphertext);
+  std::string plaintext;
+  EXPECT_TRUE(encryptor_.DecryptString(ciphertext, &plaintext));
+  EXPECT_EQ(kPlaintext, plaintext);
+}
+
+}  // namespace
+
+}  // namespace browser_sync