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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 * Software hash base definition |
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16 * |
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17 */ |
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18 |
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19 |
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20 /** |
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21 @file |
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22 @internalComponent |
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23 @released |
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24 */ |
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25 |
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26 #ifndef __CRYPTOAPI_SOFTWAREHASHBASE_H__ |
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27 #define __CRYPTOAPI_SOFTWAREHASHBASE_H__ |
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28 |
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29 #include <cryptospi/hashplugin.h> |
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30 #include "keys.h" |
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31 |
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32 namespace SoftwareCrypto |
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33 { |
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34 using namespace CryptoSpi; |
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35 /** |
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36 Interfaces for Software Hash |
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37 */ |
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38 class MSoftwareHash : public MHash |
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39 { |
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40 public: |
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41 /** |
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42 Restores the internal state of the message digest |
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43 to a previously stored state. |
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44 */ |
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45 virtual void RestoreState() = 0; |
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46 |
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47 /** |
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48 Stores the internal state of the message digest. |
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49 */ |
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50 virtual void StoreState() = 0; |
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51 }; |
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52 |
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53 /** |
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54 Proxy class Software Hash and Hmac implementation |
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55 */ |
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56 NONSHARABLE_CLASS(CSoftwareHash) : public MHash, public CBase |
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57 { |
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58 public: |
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59 // |
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60 //NewL & NewLC |
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61 // |
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62 static CSoftwareHash* NewL(TUid aAlgorithm, TUid aOperationMode, const CKey* aKey); |
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63 static CSoftwareHash* NewLC(TUid aAlgorithm, TUid aOperationMode, const CKey* aKey); |
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64 static CSoftwareHash* NewL(TUid aAlgorithm); |
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65 |
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66 // |
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67 // Destructor |
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68 // |
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69 ~CSoftwareHash(); |
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70 // |
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71 //From MPlugin |
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72 // |
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73 void Reset(); |
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74 void Close(); |
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75 void GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics); |
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76 const CExtendedCharacteristics* GetExtendedCharacteristicsL(); |
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77 TAny* GetExtension(TUid aExtensionId); |
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78 // |
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79 //From MHash |
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80 // |
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81 TPtrC8 Hash(const TDesC8& aMessage); |
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82 void Update(const TDesC8& aMessage); |
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83 TPtrC8 Final(const TDesC8& aMessage); |
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84 MHash* ReplicateL(); |
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85 MHash* CopyL(); |
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86 void SetKeyL(const CKey& aKey); |
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87 void SetOperationModeL(TUid aOperationMode); |
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88 |
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89 private: |
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90 // |
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91 //Constructor |
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92 // |
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93 CSoftwareHash(); |
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94 void ConstructL(TUid aAlgorithm, TUid aOperationMode, const CKey* aKey); |
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95 |
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96 // |
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97 //get the active implementation |
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98 // |
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99 MSoftwareHash* Impl(); |
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100 |
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101 private: |
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102 /** |
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103 The Key for HMAC mode operation |
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104 */ |
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105 CKey* iKey; |
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106 |
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107 /** |
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108 The Uid for the operation mode |
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109 */ |
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110 TUid iOperationMode; |
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111 |
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112 /** |
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113 The hash implementation |
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114 */ |
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115 MSoftwareHash* iHashImpl; |
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116 |
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117 /** |
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118 The Hmac implementation |
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119 */ |
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120 MSoftwareHash* iHmacImpl; |
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121 }; |
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122 |
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123 GLDEF_C inline TUint CMD_R(TUint a,TUint s) |
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124 { |
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125 return (a<<s) | (a>>(32-s)); |
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126 } |
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127 } |
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128 |
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129 |
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130 #endif // __CRYPTOAPI_SOFTWAREHASHBASE_H__ |