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1 /* |
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2 * Copyright (c) 2008-2009 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 Mac implementation |
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16 * Software Mac Implementation |
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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 /** |
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22 @file |
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23 */ |
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24 |
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25 |
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26 // MAC plugin header |
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27 #include "macimpl.h" |
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28 #include "pluginconfig.h" |
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29 |
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30 // headers from cryptospi framework |
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31 #include <cryptospi/cryptospidef.h> |
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32 |
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33 #include "hmacimpl.h" |
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34 |
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35 |
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36 using namespace SoftwareCrypto; |
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37 |
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38 |
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39 CMacImpl* CMacImpl::NewL(const CKey& aKey, const TUid aImplementationId, const CCryptoParams* aAlgorithmParams) |
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40 { |
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41 CMacImpl* self = new (ELeave) CMacImpl(); |
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42 CleanupStack::PushL(self); |
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43 self->ConstructL(aKey, aImplementationId, aAlgorithmParams); |
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44 CleanupStack::Pop(); |
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45 return self; |
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46 } |
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47 |
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48 CMacImpl::CMacImpl() |
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49 { |
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50 } |
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51 |
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52 void CMacImpl::ConstructL(const CKey& aKey, const TUid aImplementationId, const CCryptoParams* /*aAlgorithmParams*/) |
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53 { |
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54 iImplementationUid = aImplementationId; |
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55 iKey = CryptoSpi::CKey::NewL(aKey); |
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56 |
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57 MSoftwareHash* hashImpl = NULL; |
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58 |
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59 switch (aImplementationId.iUid) |
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60 { |
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61 case KTestPlugin02XcbcMac96: |
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62 { |
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63 CSymmetricCipher* symmetricCipher = NULL; |
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64 CryptoSpi::CSymmetricCipherFactory::CreateSymmetricCipherL(symmetricCipher, |
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65 CryptoSpi::KAesUid, *iKey, |
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66 CryptoSpi::KCryptoModeEncryptUid, |
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67 CryptoSpi::KOperationModeCBCUid, |
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68 CryptoSpi::KPaddingModeNoneUid, |
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69 NULL); |
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70 |
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71 iCmacImpl= CCMacImpl::NewL(*iKey, symmetricCipher, CryptoSpi::KAlgorithmCipherAesXcbcMac96); |
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72 iBase = ECipherBased; |
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73 } |
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74 break; |
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75 |
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76 case KTestPlugin02XcbcPrf128: |
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77 { |
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78 TBuf8<16> tempKey; |
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79 tempKey.SetLength(16); |
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80 |
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81 CryptoSpi::CCryptoParams* keyParams = CryptoSpi::CCryptoParams::NewLC(); |
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82 keyParams->AddL(tempKey, CryptoSpi::KSymmetricKeyParameterUid); |
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83 CryptoSpi::CKey* key = CryptoSpi::CKey::NewLC(aKey.KeyProperty(),*keyParams); |
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84 |
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85 CSymmetricCipher* symmetricCipher = NULL; |
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86 CryptoSpi::CSymmetricCipherFactory::CreateSymmetricCipherL(symmetricCipher, |
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87 CryptoSpi::KAesUid, *key, |
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88 CryptoSpi::KCryptoModeEncryptUid, |
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89 CryptoSpi::KOperationModeCBCUid, |
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90 CryptoSpi::KPaddingModeNoneUid, |
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91 NULL); |
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92 CleanupStack::PopAndDestroy(2, keyParams); //key and keyParams |
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93 |
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94 iCmacImpl= CCMacImpl::NewL(*iKey, symmetricCipher, CryptoSpi::KAlgorithmCipherAesXcbcPrf128); |
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95 iBase = ECipherBased; |
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96 } |
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97 break; |
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98 |
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99 default: |
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100 { |
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101 User::Leave(KErrNotSupported); |
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102 } |
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103 } |
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104 |
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105 if(iBase == EHashBased) |
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106 { |
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107 CleanupStack::PopAndDestroy(hashImpl); |
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108 } |
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109 } |
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110 |
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111 CMacImpl::~CMacImpl() |
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112 { |
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113 delete iKey; |
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114 if(iHmacImpl) |
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115 { |
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116 iHmacImpl->Close(); |
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117 } |
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118 delete iCmacImpl; |
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119 } |
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120 |
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121 void CMacImpl::Reset() |
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122 { |
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123 if (iBase == EHashBased) |
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124 { |
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125 iHmacImpl->Reset(); |
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126 } |
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127 else if (iBase == ECipherBased) |
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128 { |
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129 iCmacImpl->Reset(); |
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130 } |
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131 } |
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132 |
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133 void CMacImpl::Close() |
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134 { |
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135 delete this; |
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136 } |
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137 |
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138 void CMacImpl::GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics) |
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139 { |
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140 aPluginCharacteristics=NULL; |
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141 TInt macNum=sizeof(KMacCharacteristics)/sizeof(TMacCharacteristics*); |
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142 for (TInt i=0;i<macNum;++i) |
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143 { |
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144 if (KMacCharacteristics[i]->iMacChar.iImplementationUID==ImplementationUid().iUid) |
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145 { |
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146 aPluginCharacteristics = KMacCharacteristics[i]; |
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147 break; |
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148 } |
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149 } |
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150 } |
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151 |
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152 const CExtendedCharacteristics* CMacImpl::GetExtendedCharacteristicsL() |
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153 { |
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154 return (iBase == EHashBased) ? iHmacImpl->GetExtendedCharacteristicsL(): iCmacImpl->GetExtendedCharacteristicsL(); |
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155 } |
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156 |
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157 TAny* CMacImpl::GetExtension(TUid aExtensionId) |
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158 { |
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159 return (iBase == EHashBased) ? iHmacImpl->GetExtension(aExtensionId): NULL; |
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160 } |
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161 |
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162 TUid CMacImpl::ImplementationUid() const |
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163 { |
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164 return iImplementationUid; |
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165 } |
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166 |
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167 TPtrC8 CMacImpl::MacL(const TDesC8& aMessage) |
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168 { |
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169 return (iBase == EHashBased) ? iHmacImpl->Hash(aMessage):iCmacImpl->MacL(aMessage); |
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170 } |
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171 |
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172 void CMacImpl::UpdateL(const TDesC8& aMessage) |
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173 { |
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174 (iBase == EHashBased) ? iHmacImpl->Update(aMessage):iCmacImpl->UpdateL(aMessage); |
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175 } |
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176 |
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177 TPtrC8 CMacImpl::FinalL(const TDesC8& aMessage) |
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178 { |
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179 return (iBase == EHashBased) ? iHmacImpl->Final(aMessage):iCmacImpl->FinalL(aMessage); |
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180 } |
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181 |
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182 void CMacImpl::ReInitialiseAndSetKeyL(const CKey& aKey) |
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183 { |
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184 delete iKey; |
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185 iKey = NULL; |
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186 iKey = CryptoSpi::CKey::NewL(aKey); |
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187 |
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188 if (iBase == EHashBased) |
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189 { |
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190 iHmacImpl->SetKeyL(aKey); |
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191 iHmacImpl->Reset(); |
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192 } |
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193 else if (iBase == ECipherBased) |
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194 { |
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195 iCmacImpl->ReInitialiseAndSetKeyL(aKey); |
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196 } |
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197 } |
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198 |
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199 MMac* CMacImpl::ReplicateL() |
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200 { |
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201 CMacImpl* that= new(ELeave) CMacImpl(); |
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202 CleanupStack::PushL(that); |
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203 that->iImplementationUid = iImplementationUid; |
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204 that->iBase = iBase; |
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205 that->iKey=CKey::NewL(*iKey); |
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206 |
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207 if(iBase == EHashBased) |
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208 { |
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209 that->iHmacImpl=static_cast<CHMacImpl*>(iHmacImpl->ReplicateL()); |
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210 } |
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211 else if (iBase == ECipherBased) |
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212 { |
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213 that->iCmacImpl= iCmacImpl->ReplicateL(); |
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214 } |
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215 CleanupStack::Pop(that); |
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216 return that; |
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217 } |
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218 |
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219 MMac* CMacImpl::CopyL() |
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220 { |
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221 CMacImpl* that= new(ELeave) CMacImpl(); |
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222 CleanupStack::PushL(that); |
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223 that->iImplementationUid = iImplementationUid; |
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224 that->iBase = iBase; |
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225 that->iKey=CKey::NewL(*iKey); |
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226 |
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227 if(iBase == EHashBased) |
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228 { |
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229 that->iHmacImpl=static_cast<CHMacImpl*>(iHmacImpl->CopyL()); |
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230 } |
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231 else if (iBase == ECipherBased) |
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232 { |
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233 that->iCmacImpl= iCmacImpl->CopyL(); |
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234 } |
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235 CleanupStack::Pop(that); |
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236 return that; |
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237 } |