1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /*
3  * This file is part of the LibreOffice project.
4  *
5  * This Source Code Form is subject to the terms of the Mozilla Public
6  * License, v. 2.0. If a copy of the MPL was not distributed with this
7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8  *
9  */
10 
11 #ifndef INCLUDED_OOX_CRYPTO_CRYPTOENGINE_HXX
12 #define INCLUDED_OOX_CRYPTO_CRYPTOENGINE_HXX
13 
14 #include <vector>
15 
16 #include <rtl/ustring.hxx>
17 #include <sal/types.h>
18 
19 #include <com/sun/star/io/XInputStream.hpp>
20 #include <com/sun/star/io/XOutputStream.hpp>
21 
22 namespace oox {
23     class BinaryXInputStream;
24     class BinaryXOutputStream;
25 }
26 
27 namespace oox::crypto {
28 
29 class CryptoEngine
30 {
31 protected:
32     std::vector<sal_uInt8> mKey;
33 
34 public:
CryptoEngine()35     CryptoEngine()
36     {}
37 
~CryptoEngine()38     virtual ~CryptoEngine()
39     {}
40 
41     // Decryption
42     virtual bool readEncryptionInfo(css::uno::Reference<css::io::XInputStream> & rxInputStream) = 0;
43 
44     virtual bool generateEncryptionKey(const OUString& rPassword) = 0;
45 
46     virtual bool decrypt(
47                     BinaryXInputStream& aInputStream,
48                     BinaryXOutputStream& aOutputStream) = 0;
49 
50     // Encryption
51     virtual void writeEncryptionInfo(BinaryXOutputStream & rStream) = 0;
52 
53     virtual bool setupEncryption(const OUString& rPassword) = 0;
54 
55     virtual void encrypt(const css::uno::Reference<css::io::XInputStream> & rxInputStream,
56                          css::uno::Reference<css::io::XOutputStream> & rxOutputStream,
57                          sal_uInt32 nSize) = 0;
58 
59     virtual bool checkDataIntegrity() = 0;
60 };
61 
62 } // namespace oox::crypto
63 
64 #endif
65 
66 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
67