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1 /* |
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2 * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 #ifndef __BUFFEREDTRANSFORMATIONSHIM_H__ |
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20 #define __BUFFEREDTRANSFORMATIONSHIM_H__ |
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21 |
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22 #include <bufferedtransformation.h> |
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23 |
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24 /** |
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25 @file |
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26 @internalComponent |
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27 @released |
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28 */ |
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29 |
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30 namespace CryptoSpi |
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31 { |
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32 class CSymmetricCipher; |
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33 } |
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34 |
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35 /** |
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36 Shim class that delegates all operations to an Crypto Spi object. |
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37 This object is constructed automatically by CBufferedEncryptorShim and should |
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38 not be used directly. |
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39 */ |
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40 NONSHARABLE_CLASS(CBufferedEncryptorShim) : public CBufferedEncryptor |
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41 { |
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42 public: |
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43 /** |
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44 Creates a new CBufferedEncryptorShim. |
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45 N.B. It is the reponsiblity of the CALLER to check that block transform |
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46 object contains an SPI delegate and that the delegate supports the specified |
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47 padding mode. |
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48 */ |
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49 static CBufferedEncryptorShim* NewL(CBlockTransformation* aBT, CPadding* aPadding); |
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50 |
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51 // From CBufferedTransformation |
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52 void Process(const TDesC8& aInput, TDes8& aOutput); |
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53 TInt MaxOutputLength(TInt aInputLength) const; |
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54 void Reset(); |
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55 TInt BlockSize() const; |
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56 TInt KeySize() const; |
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57 void ProcessFinalL(const TDesC8& aInput, TDes8& aOutput); |
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58 TInt MaxFinalOutputLength(TInt aInputLength) const; |
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59 private: |
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60 CBufferedEncryptorShim(CryptoSpi::CSymmetricCipher* aSymmetricCipherImpl); |
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61 void ConstructL(CBlockTransformation* aBT, CPadding* aPadding); |
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62 |
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63 // owned by block transform - iBT |
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64 CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl; |
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65 }; |
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66 |
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67 /** |
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68 Shim class that delegates all operations to an Crypto Spi object. |
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69 This object is constructed automatically by CBufferedEncryptorShim and should |
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70 not be used directly. |
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71 */ |
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72 NONSHARABLE_CLASS(CBufferedDecryptorShim) : public CBufferedDecryptor |
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73 { |
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74 public: |
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75 /** |
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76 Creates a new CBufferedDecryptorShim. |
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77 N.B. It is the reponsiblity of the CALLER to check that block transform |
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78 object contains an SPI delegate and that the delegate supports the specified |
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79 padding mode. |
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80 */ |
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81 static CBufferedDecryptorShim* NewL(CBlockTransformation* aBT, CPadding* aPadding); |
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82 |
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83 // From CBufferedTransformation |
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84 void Process(const TDesC8& aInput, TDes8& aOutput); |
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85 TInt MaxOutputLength(TInt aInputLength) const; |
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86 void Reset(); |
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87 TInt BlockSize() const; |
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88 TInt KeySize() const; |
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89 void ProcessFinalL(const TDesC8& aInput, TDes8& aOutput); |
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90 TInt MaxFinalOutputLength(TInt aInputLength) const; |
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91 private: |
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92 CBufferedDecryptorShim(CryptoSpi::CSymmetricCipher* aSymmetricCipherImpl); |
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93 void ConstructL(CBlockTransformation* aBT, CPadding* aPadding); |
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94 |
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95 // owned by block transform - iBT |
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96 CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl; |
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97 }; |
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98 |
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99 #endif // __BUFFEREDTRANSFORMATIONSHIM_H__ |