crypto/weakcryptospi/test/tpadding/tpaddingPKCS7.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 10 Sep 2009 14:01:51 +0300
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/*
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* Copyright (c) 2004-2009 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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*
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*/
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#include <random.h>
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#include <padding.h>
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#include <securityerr.h>
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#include "tpaddingPKCS7.h"
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#include <cryptopanic.h>
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static void GenerateInput(TInt aBytes, TPtr8& in)
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 	{
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 	for (TInt j = 0; j < aBytes; j++)
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 		{
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 		TInt text('a'+j%25);
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 		in.Append(text);
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 		}
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 	}
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CTestPadPKCS7::CTestPadPKCS7()
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	{
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	SetTestStepName(KPadPKCS7);
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	}
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CTestPadPKCS7::~CTestPadPKCS7()
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	{
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	}
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TVerdict CTestPadPKCS7::doTestStepL()
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	{
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	SetTestStepResult(EPass);
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	__UHEAP_MARK;
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	INFO_PRINTF1(_L("Test of PKCS7  padding"));
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	for (TInt i = 1; i < 255; i++)
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		{
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		TestPKCS7Padding(i);
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		}
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	__UHEAP_MARKEND;
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	return TestStepResult();
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	}
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void CTestPadPKCS7::TestPKCS7Padding(TInt aBlockSize)
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	{
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   	CPaddingPKCS7 *padding = CPaddingPKCS7::NewLC(aBlockSize);
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	// Starts with zero input size(total block data is filled/padded with block size) 
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	for (TInt i = 0 ; i <= aBlockSize; i++)
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		{
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		HBufC8 *padInData = HBufC8::NewLC(i);
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		HBufC8 *padOutData = HBufC8::NewLC(i+(aBlockSize-i%aBlockSize));
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		TPtr8 in(padInData->Des());
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		TPtr8 out(padOutData->Des());
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		GenerateInput(i, in);
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		TRAPD(err, padding->PadL(in, out));
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		TEST(err == KErrNone);
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		TInt totalLength = out.Length();
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		TUint paddingLength = aBlockSize - in.Length()%aBlockSize;
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		// Test that the total length is a multiple of blockSize
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		TEST((totalLength % aBlockSize) == 0);
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		// Test that the padding bytes are equal in value to the paddingLength,
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		// ie, if padding length is 5 the 5 last octets in the out array should be 0x05
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		for (TInt j = paddingLength; j > 0 ; j--)
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			{
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			TEST(out[out.Length()-j] == paddingLength);
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			}
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		// Test that the data has not been corrupted
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		TEST(in == out.Left(out.Length() - paddingLength));
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		CleanupStack::PopAndDestroy(2, padInData); // padInData, padOutData
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		}
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	CleanupStack::PopAndDestroy(padding);
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	}
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CTestUnpadPKCS7::CTestUnpadPKCS7()
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	{
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   	SetTestStepName(KUnpadPKCS7);
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	}
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CTestUnpadPKCS7::~CTestUnpadPKCS7()
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	{
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	}
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TVerdict CTestUnpadPKCS7::doTestStepL()
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	{
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	SetTestStepResult(EPass);
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	__UHEAP_MARK;
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	INFO_PRINTF1(_L("Test of PKCS7 unpadding"));
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	for (TInt i = 1; i < 255; i++)
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		{
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		TestPKCS7Unpadding(i);
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		}
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   115
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	__UHEAP_MARKEND;
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	return TestStepResult();
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	}
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   119
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   120
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void CTestUnpadPKCS7::TestPKCS7Unpadding(TInt aBlockSize)
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	{
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	CPaddingPKCS7 *padding = CPaddingPKCS7::NewLC(aBlockSize);
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   124
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	// Input must be < aBlockSize otherwise this wouldn't be 
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	// a padded block
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	for (TInt i = 0 ; i < aBlockSize; i++)
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		{
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		// Input to un-padding should always be an entire block
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		// for correctly data.
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		HBufC8 *padInData = HBufC8::NewLC(aBlockSize);
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		HBufC8 *padOutData = HBufC8::NewLC(i);
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		HBufC8 *padCompareData = HBufC8::NewLC(i);
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		TPtr8 in(padInData->Des());
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		TPtr8 out(padOutData->Des());
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		TPtr8 comp(padCompareData->Des());
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   137
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		GenerateInput(i, in);
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		comp.Copy(in);		
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   140
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		in.SetLength(aBlockSize);
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		TInt paddingBytes = aBlockSize - (i % aBlockSize);
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		for (TInt j = 1; j <= paddingBytes; j++)
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			{
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			in[in.Length()-j] = (TUint8)paddingBytes;
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			}
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   147
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		TRAPD(err, padding->UnPadL(in, out));
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		if (err != KErrNone)
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			{
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			INFO_PRINTF3(_L("The Error returned for block size %d is %d"), aBlockSize,err);
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			}
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		TEST(err == KErrNone); // Verify UnPadL leave code 
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		TEST(out == comp); // Verify  UnPadL output data with expected data
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		CleanupStack::PopAndDestroy(3, padInData); // padInData, padOutData, padCompareData
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		}
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	CleanupStack::PopAndDestroy(padding);
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   158
	}
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   159
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   160
 
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   161
CTestUnpadCorruptPKCS7::CTestUnpadCorruptPKCS7()
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	{
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	SetTestStepName(KUnpadCorruptPKCS7);
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	}
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   165
 
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CTestUnpadCorruptPKCS7::~CTestUnpadCorruptPKCS7()
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   167
	{
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   168
	}
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   169
 
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   170
TVerdict CTestUnpadCorruptPKCS7::doTestStepL()
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 	{
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 	SetTestStepResult(EPass);
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 	__UHEAP_MARK;
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   174
 
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 	TInt blockSize;
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 	TInt textSize;
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 	TInt paddingNum = 0;
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   178
 	
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 	if (GetIntFromConfig(ConfigSection(), _L("blocksize"), blockSize))
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 		{
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 		if (GetIntFromConfig(ConfigSection(), _L("textsize"), textSize))
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 			{
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   183
 			if (GetIntFromConfig(ConfigSection(), _L("paddingbyte"), paddingNum))
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   184
 				{
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 				INFO_PRINTF1(_L("Test of PKCS7 unpadding with corrupt data"));
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 				TUint8 paddingByte = Min(paddingNum, 255);
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   				TestCorruptPKCS7Unpadding(blockSize, textSize, paddingByte);	  					
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 				}				
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 			else
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   190
 				{
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 				ERR_PRINTF1(_L("Missing parameter - paddingbyte"));
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   192
 				}
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 			}
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 		else
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   195
 			{
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 			ERR_PRINTF1(_L("Missing parameter - textsize"));
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   197
 			}
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 		}
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   199
 	else
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   200
		{
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 		ERR_PRINTF1(_L("Missing parameter - blocksize"));
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   202
 		}
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   203
 
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 	__UHEAP_MARKEND;
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 	return TestStepResult();
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 	}
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   207
 
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   208
void CTestUnpadCorruptPKCS7::TestCorruptPKCS7Unpadding(TInt aBlockSize, TInt aTextSize, TUint8 aPaddingByte)
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	{
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 	CPaddingPKCS7 *padding = CPaddingPKCS7::NewLC(aBlockSize);
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 	TInt paddingBytes = (aBlockSize - aTextSize % aBlockSize);
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   212
 	
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	HBufC8 *padInData = HBufC8::NewLC(aTextSize + paddingBytes);
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   214
 	HBufC8 *padOutData = HBufC8::NewLC(aTextSize);
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 	TPtr8 in(padInData->Des());
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 	TPtr8 out(padOutData->Des());
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   217
 
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 	GenerateInput(aTextSize, in);
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   219
 
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 	in.SetLength(in.Length() + paddingBytes);
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   221
 	for (TInt j = 1; j <= paddingBytes; j++)
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   222
 		{
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 		in[in.Length()-j] = (TUint8) aPaddingByte;
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   224
 		}
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   225
 
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 	TRAPD(err, padding->UnPadL(in, out));
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diff changeset
   227
 	
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 	if ( err == KErrInvalidPadding )
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		{
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   230
  		INFO_PRINTF2(_L("The PKCS7 unpadding UnPadL method returned error is %d"), err);
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  		TEST(err == KErrInvalidPadding);
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   232
  		SetTestStepResult(EPass);
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   233
  		}
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   234
	else if ( err == KErrNone )
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   235
		{
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		TEST(err == KErrNone);
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   237
		}
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   238
	CleanupStack::PopAndDestroy(3, padding); // padding, padInData, padOutData
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   239
	}
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   240
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   241
CTestPaddingCorruptPKCS7::CTestPaddingCorruptPKCS7()
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   242
	{
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   243
	SetTestStepName(KPaddingCorruptPKCS7);
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   244
	}
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   245
 
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   246
CTestPaddingCorruptPKCS7::~CTestPaddingCorruptPKCS7()
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   247
	{
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   248
	}
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   249
 
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   250
TVerdict CTestPaddingCorruptPKCS7::doTestStepL()
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   251
 	{
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 	SetTestStepResult(EPass);
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 	__UHEAP_MARK;
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diff changeset
   254
 
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   255
 	TInt blockSize;
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   256
 	TInt textSize;
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   257
 	 	
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   258
 	if (GetIntFromConfig(ConfigSection(), _L("blocksize"), blockSize))
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   259
 		{
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   260
 		if (GetIntFromConfig(ConfigSection(), _L("textsize"), textSize))
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   261
 			{
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   262
 			INFO_PRINTF1(_L("Test of PKCS7 unpadding with corrupt data"));
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   263
   			TestCorruptPKCS7padding(blockSize, textSize);	  					
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   264
 			}
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 		else
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   266
 			{
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   267
 			ERR_PRINTF1(_L("Missing parameter - textsize"));
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   268
 			}
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 		}
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   270
 	else
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   271
		{
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   272
 		ERR_PRINTF1(_L("Missing parameter - blocksize"));
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   273
 		}
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   274
 
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 	__UHEAP_MARKEND;
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   276
 	return TestStepResult();
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   277
 	}
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   278
 
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   279
void CTestPaddingCorruptPKCS7::TestCorruptPKCS7padding(TInt aBlockSize, TInt aTextSize)
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   280
	{
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   281
	CPaddingPKCS7 *padding = CPaddingPKCS7::NewLC(aBlockSize);
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   282
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   283
	TInt paddingBytes = 0;
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   284
	//Divide by 0 is undefined.
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   285
	if(aBlockSize != 0)
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   286
		{
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   287
		paddingBytes = aBlockSize - (aTextSize % aBlockSize);
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   288
		}
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parents:
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   289
		
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   290
 	HBufC8 *padOutData = HBufC8::NewLC(aTextSize + paddingBytes);
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   291
 	HBufC8 *padInData = HBufC8::NewLC(aTextSize);
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   292
 	TPtr8 in(padInData->Des());
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   293
 	TPtr8 out(padOutData->Des());
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diff changeset
   294
 
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   295
 	GenerateInput(aTextSize, in);
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   296
 	TRAPD(err, padding->PadL(in, out));
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   297
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   298
	INFO_PRINTF2(_L("The PKCS7 padding PadL method returned error is %d"), err);
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parents:
diff changeset
   299
	
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   300
	//check expected result
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   301
	TPtrC expectedContent;
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diff changeset
   302
 	if (GetStringFromConfig(ConfigSection(), _L("case"), expectedContent))
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   303
 		{
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diff changeset
   304
 		if(expectedContent.Compare(_L("InvalidPadding")) ==0)
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parents:
diff changeset
   305
 			{
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diff changeset
   306
 			TEST(err == KErrInvalidPadding);
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diff changeset
   307
 			}
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diff changeset
   308
 		else if(expectedContent.Compare(_L("Valid")) ==0)
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parents:
diff changeset
   309
 			{
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diff changeset
   310
 			TEST(err == KErrNone);
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parents:
diff changeset
   311
 			}
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diff changeset
   312
 		else if(expectedContent.Compare(_L("CorruptBlockSize")) ==0)
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parents:
diff changeset
   313
 			{
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   314
 			TEST(err == KErrArgument);
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parents:
diff changeset
   315
 			}
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parents:
diff changeset
   316
 		}
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parents:
diff changeset
   317
 	
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   318
 	//skip the checking on padded data if padding is unsuccessful(no padding is done), 
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diff changeset
   319
 	//otherwise the erroneous operation on output descriptor will panic.
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parents:
diff changeset
   320
 	if(err != KErrNone)
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parents:
diff changeset
   321
 		{
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parents:
diff changeset
   322
 		CleanupStack::PopAndDestroy(3, padding);
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parents:
diff changeset
   323
 		return;
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parents:
diff changeset
   324
 		}
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parents:
diff changeset
   325
	
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parents:
diff changeset
   326
	TInt totalLength = out.Length();
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parents:
diff changeset
   327
	TInt inLength = in.Length();
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parents:
diff changeset
   328
	
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diff changeset
   329
	TUint paddingLength = 0;
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parents:
diff changeset
   330
	//Divide by 0 is undefined.
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parents:
diff changeset
   331
	if(aBlockSize != 0)
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parents:
diff changeset
   332
		{
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parents:
diff changeset
   333
		paddingLength = aBlockSize - inLength%aBlockSize;
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parents:
diff changeset
   334
		// Test that the total length is a multiple of blockSize
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parents:
diff changeset
   335
		TEST((totalLength % aBlockSize) == 0);
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parents:
diff changeset
   336
		}			
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parents:
diff changeset
   337
	
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   338
 	// Test that the padding bytes are equal in value to the paddingLength,
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   339
	// ie, if padding length is 5 the 5 last octets in the out array should be 0x05
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   340
	for (TInt j = paddingLength; j > 0 ; j--)
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parents:
diff changeset
   341
		{
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		TEST(out[out.Length()-j] == paddingLength);
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		}
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   346
 	
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 	// Test that the data has not been corrupted
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	TEST(in == out.Left(out.Length() - paddingLength));
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   349
 	
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 	CleanupStack::PopAndDestroy(3, padding); // padInData, padOutData, padCompareData, padding
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	}
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   352