author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 10 Sep 2009 14:01:51 +0300 | |
changeset 8 | 35751d3474b7 |
child 49 | 2f10d260163b |
permissions | -rw-r--r-- |
8
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/* |
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* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* Example CTestStep derived implementation |
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* |
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*/ |
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|
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|
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/** |
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@file |
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@internalTechnology |
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*/ |
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#include "symmetric_mac_incremental_with_replicate_step.h" |
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#include <cryptospi/cryptomacapi.h> |
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#include "keys.h" |
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#include <cryptospi/plugincharacteristics.h> |
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|
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using namespace CryptoSpi; |
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CSymmetricMacIncrementalWithReplicateStep::~CSymmetricMacIncrementalWithReplicateStep() |
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{ |
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} |
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CSymmetricMacIncrementalWithReplicateStep::CSymmetricMacIncrementalWithReplicateStep() |
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{ |
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SetTestStepName(KSymmetricMacIncrementalWithReplicateStep); |
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} |
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TVerdict CSymmetricMacIncrementalWithReplicateStep::doTestStepPreambleL() |
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{ |
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return EPass; |
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} |
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TVerdict CSymmetricMacIncrementalWithReplicateStep::doTestStepL() |
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{ |
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//Assume faliure, unless all is successful |
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SetTestStepResult(EFail); |
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INFO_PRINTF1(_L("*** Symmetric Mac - Incremental with Replicate ***")); |
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INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells()); |
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TPtrC keyPath; |
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TPtrC sourcePath; |
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TVariantPtrC algorithm; |
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if( !GetStringFromConfig(ConfigSection(),KConfigEncryptKeyPath, keyPath) || |
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!GetStringFromConfig(ConfigSection(),KConfigAlgorithmUid, algorithm) || |
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!GetStringFromConfig(ConfigSection(),KConfigSourcePath, sourcePath)) |
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{ |
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User::Leave(KErrNotFound); |
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} |
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// Create key |
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TKeyProperty keyProperty; |
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CCryptoParams* keyParams = CCryptoParams::NewLC(); |
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HBufC8* convertKey = ReadInHexPlainTextL(keyPath); |
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CleanupStack::PushL(convertKey); |
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keyParams->AddL(*convertKey, KSymmetricKeyParameterUid); |
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CKey* key=CKey::NewL(keyProperty, *keyParams); |
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CleanupStack::PushL(key); |
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//Create a pointer for the Hmac Implementation Object |
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CMac* macImpl= NULL; |
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//Retrieve a Mac Factory Object |
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TRAPD(err,CMacFactory::CreateMacL(macImpl, |
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algorithm, |
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*key, |
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NULL)); |
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|
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if (err != KErrNone) |
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{ |
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CleanupStack::PopAndDestroy(3, keyParams); // keyParams, convertKey, key |
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delete macImpl; |
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ERR_PRINTF2(_L("*** FAIL: Failed to Create Symmetric Mac Object - %d ***"), err); |
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return EFail; |
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} |
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INFO_PRINTF1(_L("Plugin loaded.")); |
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//Push the Mac Implementation Object onto the Cleanup Stack |
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CleanupStack::PushL(macImpl); |
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RFs fsSession; |
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User::LeaveIfError(fsSession.Connect()); |
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CleanupClosePushL(fsSession); |
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106 |
RFile sourceFile; |
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107 |
CleanupClosePushL(sourceFile); |
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|
108 |
|
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109 |
//Open the specified source file |
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110 |
User::LeaveIfError(sourceFile.Open(fsSession,sourcePath, EFileRead)); |
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|
111 |
|
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112 |
TInt sourceLength = 0; |
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113 |
TInt readPosition = 0; |
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114 |
TInt readIncrement = 0; |
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115 |
TBool macComplete = EFalse; |
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116 |
TBool macReplicated = EFalse; |
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117 |
TPtrC8 macStr; |
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118 |
|
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119 |
CMac* macReplicateImpl = NULL; |
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120 |
|
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121 |
User::LeaveIfError(sourceFile.Size(sourceLength)); |
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122 |
|
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123 |
//Divide the total size of the source file up into individual equal sized blocks to read |
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124 |
//over several increments |
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125 |
readIncrement = sourceLength/KDataReadBlocks; |
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126 |
|
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127 |
if (readIncrement == 0) |
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128 |
{ |
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129 |
ERR_PRINTF2(_L("*** Error: Source File must be larger than %d bytes ***"), KDataReadBlocks); |
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130 |
User::LeaveIfError(KErrNotSupported); |
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131 |
} |
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132 |
|
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133 |
do |
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134 |
{ |
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135 |
//Create a heap based descriptor to store the data |
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136 |
HBufC8* sourceData = HBufC8::NewL(readIncrement); |
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137 |
CleanupStack::PushL(sourceData); |
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138 |
TPtr8 sourcePtr = sourceData->Des(); |
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139 |
|
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140 |
//Read in a block of data from the source file from the current position |
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141 |
err = sourceFile.Read(readPosition,sourcePtr,readIncrement); |
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142 |
|
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143 |
HBufC8* convertSrc = ConvertFromHexFormatToRawL(*sourceData); |
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144 |
CleanupStack::PopAndDestroy(sourceData); |
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145 |
CleanupStack::PushL(convertSrc); |
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|
146 |
|
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147 |
//Update the read position by adding the number of bytes read |
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148 |
readPosition += readIncrement; |
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|
149 |
|
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150 |
if(readPosition == readIncrement) |
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151 |
{ |
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152 |
//Read in the first block from the data file into the Mac implementation object |
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153 |
if(macReplicated == EFalse) |
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154 |
{ |
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155 |
macImpl->MacL(*convertSrc); |
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156 |
INFO_PRINTF2(_L("Intial Mac - Bytes Read: %d"), readPosition); |
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157 |
} |
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158 |
else |
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|
159 |
{ |
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160 |
macReplicateImpl->MacL(*convertSrc); |
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|
161 |
INFO_PRINTF2(_L("Intial Mac (Replicate) - Bytes Read: %d"), readPosition); |
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162 |
} |
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|
163 |
CleanupStack::PopAndDestroy(convertSrc); |
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|
164 |
} |
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165 |
else if(readPosition >= sourceLength) |
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|
166 |
{ |
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167 |
//Reading in the final block, constructs the complete hash value and returns it within a TPtrC8 |
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|
168 |
macStr.Set(macReplicateImpl->FinalL(*convertSrc)); |
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|
169 |
|
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|
170 |
CleanupStack::PopAndDestroy(convertSrc); |
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|
171 |
|
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|
172 |
//Sets the Complete Flag to ETrue in order to drop out of the loop |
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|
173 |
macComplete = ETrue; |
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|
174 |
|
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|
175 |
TInt totalRead = (readPosition - readIncrement) + (*sourceData).Length(); |
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|
176 |
INFO_PRINTF2(_L("Final Mac - Bytes Read: %d"),totalRead); |
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|
177 |
} |
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|
178 |
//If the read position is half the source length and the implementation |
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|
179 |
//object hasn't already been replicated |
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|
180 |
else if((readPosition >= sourceLength/2) && (macReplicated == EFalse)) |
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|
181 |
{ |
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|
182 |
INFO_PRINTF1(_L("Replicating Mac Object...")); |
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|
183 |
macImpl->UpdateL(*convertSrc); |
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|
184 |
|
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|
185 |
CleanupStack::PopAndDestroy(convertSrc); |
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|
186 |
|
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|
187 |
//Create a Copy of the existing Mac Object with NO internal message state |
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|
188 |
macReplicateImpl = macImpl->ReplicateL(); |
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|
189 |
|
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|
190 |
macReplicated = ETrue; |
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|
191 |
|
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|
192 |
//Sets the read position back to 0 inorder to restart the file read from the beginning |
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|
193 |
readPosition =0; |
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|
194 |
CleanupStack::PushL(macReplicateImpl); |
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|
195 |
INFO_PRINTF2(_L("*** Mac REPLICATE - Bytes Read: %d ***"), readPosition); |
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|
196 |
} |
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|
197 |
else |
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|
198 |
{ |
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|
199 |
//Update the message data within the Mac object with the new block |
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|
200 |
if(macReplicated == EFalse) |
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|
201 |
{ |
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|
202 |
macImpl->UpdateL(*convertSrc); |
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diff
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|
203 |
INFO_PRINTF2(_L("Mac Update - Bytes Read: %d"), readPosition); |
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|
204 |
} |
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|
205 |
else |
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diff
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|
206 |
{ |
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|
207 |
macReplicateImpl->UpdateL(*convertSrc); |
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diff
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|
208 |
INFO_PRINTF2(_L("Mac Update (Replicate) - Bytes Read: %d"), readPosition); |
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|
209 |
} |
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CleanupStack::PopAndDestroy(convertSrc); |
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} |
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}while(macComplete == EFalse); |
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//Create a NULL TCharacteristics pointer |
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const TCharacteristics* charsPtr(NULL); |
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//Retrieve the characteristics for the mac implementation object |
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TRAP_LOG(err, macImpl->GetCharacteristicsL(charsPtr)); |
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|
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//Static cast the characteristics to type TMacCharacteristics |
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const TMacCharacteristics* macCharsPtr = static_cast<const TMacCharacteristics*>(charsPtr); |
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|
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//The mac output size is returned in Bits, divide by 8 to get the Byte size |
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TInt macSize = macCharsPtr->iCipherAlgorithmChar->iBlockSize/8; |
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HBufC8* macData = HBufC8::NewLC(macSize); |
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TPtr8 macPtr = macData->Des(); |
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|
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macPtr.Copy(macStr); |
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|
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//Check that expected data equals the encrypted data |
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HBufC8* encryptedFileData = ReadInHexCiphertextL(); |
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CleanupStack::PushL(encryptedFileData); |
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|
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if( !macPtr.Compare(TPtrC8(*encryptedFileData))) |
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{ |
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INFO_PRINTF1(_L("*** Mac - Incremental with Replicate : PASS ***")); |
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SetTestStepResult(EPass); |
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} |
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else |
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{ |
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ERR_PRINTF2(_L("*** FAIL: Mac Mismatch ***"), err); |
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} |
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|
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CleanupStack::PopAndDestroy(9, keyParams); // keyParams, convertKey, key, macImpl, &fsSession, &sourceFile, macReplicateImpl, macData, encryptedFileData |
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INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells()); |
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return TestStepResult(); |
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} |
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|
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|
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TVerdict CSymmetricMacIncrementalWithReplicateStep::doTestStepPostambleL() |
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{ |
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return TestStepResult(); |
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} |