|
1 /* |
|
2 * Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of the License "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: |
|
15 * ** IMPORTANT ** PublishedPartner API's in this file are published to 3rd party developers via the |
|
16 * Symbian website. Changes to these API's should be treated as PublishedAll API changes and the Security TA should be consulted. |
|
17 * CBlockTransformation class implementation |
|
18 * |
|
19 */ |
|
20 |
|
21 |
|
22 /** |
|
23 @file |
|
24 @publishedPartner |
|
25 * @released |
|
26 */ |
|
27 |
|
28 #ifndef __BLOCKTRANSFORMATION_H__ |
|
29 #define __BLOCKTRANSFORMATION_H__ |
|
30 |
|
31 #include <e32base.h> |
|
32 |
|
33 #ifndef SYMBIAN_ENABLE_SPLIT_HEADERS |
|
34 /** The maximum block size supported (in bytes) */ |
|
35 const TUint KMaxBlockSizeSupported = 32; |
|
36 #endif |
|
37 |
|
38 /** |
|
39 * Abstract base class defining the interface to block transformation schemes. |
|
40 * |
|
41 * Block transformation schemes process a fixed-size block of input to return a |
|
42 * block of output the same size. |
|
43 * |
|
44 */ |
|
45 class CBlockTransformation : public CBase |
|
46 { |
|
47 public: |
|
48 /** |
|
49 * Transforms the supplied block, returning the new value using the same |
|
50 * parameter. aBlock.Size() must be the same length as BlockSize(). |
|
51 * |
|
52 * @param aBlock On input, the data to be transformed; |
|
53 * on return, the data after transformation. |
|
54 */ |
|
55 virtual void Transform(TDes8& aBlock) = 0; |
|
56 |
|
57 /** |
|
58 * Resets the transformation back to its original state. Clears all its buffers. |
|
59 */ |
|
60 virtual void Reset() = 0; |
|
61 |
|
62 /** |
|
63 * Gets the block size in bytes. |
|
64 * |
|
65 * @return Block size in bytes. |
|
66 */ |
|
67 virtual TInt BlockSize() const = 0; |
|
68 |
|
69 /** |
|
70 * Gets the key size in bits. |
|
71 * |
|
72 * @return Key size in bits. |
|
73 */ |
|
74 virtual TInt KeySize() const = 0; |
|
75 |
|
76 /** |
|
77 @internalComponent |
|
78 Used to retrieve the extended interfaces by id. For Crypto |
|
79 SPI internal use only. |
|
80 */ |
|
81 TInt GetExtension(TUint aExtensionId, TAny*& a0, TAny* a1); |
|
82 }; |
|
83 |
|
84 #endif // __BLOCKTRANSFORMATION_H__ |