Keep only base/extractor.[cc|h].

base/encrypt.h

-// Copyright 2003-2009 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// ========================================================================
-//
-// Encryption functions
-
-#ifndef OMAHA_COMMON_ENCRYPT_H__
-#define OMAHA_COMMON_ENCRYPT_H__
-
-#include <windows.h>
-#include <wincrypt.h>
-#include <vector>
-#include "base/basictypes.h"
-
-namespace omaha {
-
-namespace encrypt {
-
-// Encrypts a data buffer by using the user's credentials as well as
-// the provided key. The key may be NULL, if no entropy is needed.
-HRESULT EncryptData(const void* key, size_t key_len,
-                    const void* data, size_t data_len,
-                    std::vector<uint8>* data_out);
-
-// Decrypts the provided data buffer. The key may be NULL, if no entropy
-// is needed.
-HRESULT DecryptData(const void* key, size_t key_len,
-                    const void* data, size_t data_len,
-                    std::vector<uint8>* data_out);
-
-}  // namespace encrypt
-
-}  // namespace omaha
-
-#endif  // OMAHA_COMMON_ENCRYPT_H__