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// 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_
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