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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 * hmac implementation |
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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_SOFTWAREHMACIMPL_H__ |
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27 #define __CRYPTOAPI_SOFTWAREHMACIMPL_H__ |
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28 |
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29 #include "softwarehashbase.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 const TInt KHMacPad = 64; |
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37 |
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38 NONSHARABLE_CLASS(CHMacImpl) : public CBase, public MSoftwareHash |
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39 { |
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40 public: |
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41 //NewL & NewLC |
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42 static CHMacImpl* NewL(MSoftwareHash* aHash); |
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43 static CHMacImpl* NewLC(MSoftwareHash* aHash); |
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44 static CHMacImpl* NewL(const CKey& aKey, MSoftwareHash* aHash); |
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45 static CHMacImpl* NewLC(const CKey& aKey, MSoftwareHash* aHash); |
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46 |
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47 //From MPlugin |
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48 void Reset(); |
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49 void Close(); |
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50 void GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics); |
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51 const CExtendedCharacteristics* GetExtendedCharacteristicsL(); |
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52 TAny* GetExtension(TUid aExtensionId); |
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53 |
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54 //From MHmac |
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55 TPtrC8 Hash(const TDesC8& aMessage); |
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56 void Update(const TDesC8& aMessage); |
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57 TPtrC8 Final(const TDesC8& aMessage); |
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58 void SetKeyL(const CKey& aKey); |
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59 void SetOperationModeL(TUid aOperationMode); |
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60 MHash* ReplicateL(); |
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61 MHash* CopyL(); |
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62 |
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63 private: |
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64 //Constructors |
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65 CHMacImpl(); |
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66 CHMacImpl(const CHMacImpl& aHMacImpl); |
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67 |
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68 //Destructor |
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69 ~CHMacImpl(); |
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70 void RestoreState(); |
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71 void StoreState(); |
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72 void ConstructL(const CKey& aKey, MSoftwareHash* aHash); |
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73 void ConstructL(MSoftwareHash* aHash); |
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74 void Initialise(const TDesC8& aKey); |
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75 |
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76 private: |
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77 TUid iImplementationUid; |
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78 MSoftwareHash* iDigest; |
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79 TBuf8<KHMacPad> iInnerPad; |
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80 TBuf8<KHMacPad> iOuterPad; |
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81 |
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82 TBuf8<KHMacPad> iInnerPadCopy; |
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83 TBuf8<KHMacPad> iOuterPadCopy; |
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84 }; |
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85 } |
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86 |
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87 #endif // __CRYPTOAPI_SOFTWAREHMACIMPL_H__ |