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os/security/crypto/weakcryptospi/source/hash/hashshim.cpp
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib. 
     1 /*

     2 * Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 * hash shim implementation

    16 * hash shim implementation

    17 *

    18 */

    19 

    20 

    21 /**

    22  @file

    23 */

    24 

    25 #include "hashshim.h"

    26 #include <cryptospi/cryptospidef.h>

    27 #include <cryptospi/plugincharacteristics.h>

    28 #include <cryptospi/keys.h>

    29 

    30 

    31 using namespace CryptoSpi;

    32 

    33 //

    34 // MD2 shim implementation

    35 //

    36 CMD2Shim* CMD2Shim::NewL()

    37 	{

    38 	CMD2Shim* self=CMD2Shim::NewLC();

    39 	CleanupStack::Pop();

    40 	return self;	

    41 	}

    42 

    43 CMD2Shim* CMD2Shim::NewLC()

    44 	{

    45 	CMD2Shim* self=new(ELeave) CMD2Shim();

    46 	CleanupStack::PushL(self);

    47 	self->ConstructL();

    48 	return self;	

    49 	}

    50 

    51 TInt CMD2Shim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)

    52 	{

    53 	TInt ret(KErrNotSupported);

    54 	

    55 	if (KHashInterfaceUid.iUid==aExtensionId && iHashImpl)

    56 		{

    57 		a0=iHashImpl;

    58 		ret=KErrNone;	

    59 		}

    60 		

    61 	return ret;

    62 	}

    63 

    64 CMD2Shim::CMD2Shim()

    65 	{		

    66 	}

    67 

    68 CMD2Shim::~CMD2Shim()

    69 	{

    70 	delete iHashImpl;				

    71 	}

    72 

    73 

    74 void CMD2Shim::ConstructL()

    75 	{	

    76 	CHashFactory::CreateHashL(iHashImpl,

    77 							KMd2Uid,

    78 							KHashModeUid,

    79 							NULL, NULL);

    80 	}

    81 

    82 CMessageDigest* CMD2Shim::CopyL()

    83 	{

    84 	CMD2Shim* copy=new(ELeave) CMD2Shim();

    85 	CleanupStack::PushL(copy);

    86 	copy->iHashImpl=iHashImpl->CopyL();

    87 	CleanupStack::Pop();

    88 	return copy;

    89 	}

    90 	

    91 CMessageDigest* CMD2Shim::ReplicateL()

    92 	{

    93 	CMD2Shim* copy=new(ELeave) CMD2Shim();

    94 	CleanupStack::PushL(copy);

    95 	copy->iHashImpl=iHashImpl->ReplicateL();

    96 	CleanupStack::Pop();

    97 	return copy;

    98 	}

    99 

   100 

   101 TInt CMD2Shim::BlockSize()

   102 	{

   103 	const TCharacteristics* ptr(NULL);

   104 	TRAPD(err, iHashImpl->GetCharacteristicsL(ptr);)

   105 	

   106 	if (err)

   107 		{

   108 		return ((err>0)? KErrGeneral : err);

   109 		}

   110 	const THashCharacteristics* hashPtr=static_cast<const THashCharacteristics*>(ptr);

   111 	return hashPtr->iBlockSize/8;

   112 	}

   113 

   114 TInt CMD2Shim::HashSize()

   115 	{

   116 	const TCharacteristics* ptr(NULL);

   117 	TRAPD(err, iHashImpl->GetCharacteristicsL(ptr);)

   118 	if (err)

   119 		{

   120 		return ((err>0)? KErrGeneral : err);

   121 		}	

   122 	const THashCharacteristics* hashPtr=static_cast<const THashCharacteristics*>(ptr);

   123 	return hashPtr->iOutputSize/8;

   124 	}

   125 

   126 void CMD2Shim::Update(const TDesC8& aMessage)

   127 	{

   128 	iHashImpl->Update(aMessage);	

   129 	}

   130 	

   131 	

   132 TPtrC8 CMD2Shim::Final(const TDesC8& aMessage)

   133 	{

   134 	return iHashImpl->Final(aMessage);

   135 	}

   136 

   137 TPtrC8 CMD2Shim::Final()

   138 	{

   139 	TPtrC8 ptr(KNullDesC8());

   140 	return iHashImpl->Final(ptr);

   141 	}

   142 		

   143 void CMD2Shim::Reset()

   144 	{

   145 	iHashImpl->Reset();

   146 	}

   147 	

   148 

   149 TPtrC8 CMD2Shim::Hash(const TDesC8& aMessage)

   150 	{

   151 	return iHashImpl->Hash(aMessage);

   152 	}

   153 

   154 //

   155 // Implementation of MD5 shim

   156 //

   157 CMD5Shim* CMD5Shim::NewL()

   158 	{

   159 	CMD5Shim* self=CMD5Shim::NewLC();

   160 	CleanupStack::Pop();

   161 	return self;	

   162 	}

   163 

   164 CMD5Shim* CMD5Shim::NewLC()

   165 	{

   166 	

   167 	CMD5Shim* self=new(ELeave) CMD5Shim();

   168 	CleanupStack::PushL(self);

   169 	self->ConstructL();

   170 	return self;	

   171 	

   172 	}

   173 

   174 CMD5Shim::CMD5Shim()

   175 	{		

   176 	}

   177 	

   178 TInt CMD5Shim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)

   179 	{

   180 	TInt ret(KErrNotSupported);

   181 	

   182 	if (KHashInterfaceUid.iUid==aExtensionId && iHashImpl)

   183 		{

   184 		a0=iHashImpl;

   185 		ret=KErrNone;	

   186 		}

   187 		

   188 	return ret;

   189 	}

   190 

   191 CMD5Shim::~CMD5Shim()

   192 	{

   193 	delete iHashImpl;				

   194 	}

   195 

   196 

   197 void CMD5Shim::ConstructL()

   198 	{	

   199 	CHashFactory::CreateHashL(iHashImpl,

   200 							KMd5Uid,

   201 							KHashModeUid,

   202 							NULL,

   203 							NULL);

   204 	}

   205 

   206 CMessageDigest* CMD5Shim::CopyL()

   207 	{

   208 	CMD5Shim* copy=new(ELeave) CMD5Shim();

   209 	CleanupStack::PushL(copy);

   210 	copy->iHashImpl=iHashImpl->CopyL();

   211 	CleanupStack::Pop();

   212 	return copy;

   213 	}

   214 

   215 CMessageDigest* CMD5Shim::ReplicateL()

   216 	{

   217 	CMD5Shim* copy=new(ELeave) CMD5Shim();

   218 	CleanupStack::PushL(copy);

   219 	copy->iHashImpl=iHashImpl->ReplicateL();

   220 	CleanupStack::Pop();

   221 	return copy;

   222 	}

   223 

   224 TInt CMD5Shim::BlockSize()

   225 	{

   226 	const TCharacteristics* ptr(NULL);

   227 	TRAPD(err, iHashImpl->GetCharacteristicsL(ptr);)

   228 	if (err)

   229 		{

   230 		return ((err>0)? KErrGeneral : err);

   231 		}		

   232 	const THashCharacteristics* hashPtr=static_cast<const THashCharacteristics*>(ptr);

   233 	return hashPtr->iBlockSize/8;

   234 	}

   235 

   236 TInt CMD5Shim::HashSize()

   237 	{

   238 	const TCharacteristics* ptr(NULL);

   239 	TRAPD(err, iHashImpl->GetCharacteristicsL(ptr);)

   240 	if (err)

   241 		{

   242 		return ((err>0)? KErrGeneral : err);

   243 		}		

   244 	const THashCharacteristics* hashPtr=static_cast<const THashCharacteristics*>(ptr);

   245 	return hashPtr->iOutputSize/8;

   246 	}

   247 

   248 void CMD5Shim::Update(const TDesC8& aMessage)

   249 	{

   250 	iHashImpl->Update(aMessage);	

   251 	}

   252 	

   253 TPtrC8 CMD5Shim::Final(const TDesC8& aMessage)

   254 	{

   255 	return iHashImpl->Final(aMessage);

   256 	}

   257 

   258 TPtrC8 CMD5Shim::Final()

   259 	{

   260 	TPtrC8 ptr(KNullDesC8());

   261 	return iHashImpl->Final(ptr);

   262 	}

   263 		

   264 void CMD5Shim::Reset()

   265 	{

   266 	iHashImpl->Reset();

   267 	}

   268 	

   269 

   270 TPtrC8 CMD5Shim::Hash(const TDesC8& aMessage)

   271 	{

   272 	return iHashImpl->Hash(aMessage);

   273 	}

   274 	

   275 //

   276 // Implementation of SHA1 shim

   277 //	

   278 	

   279 CSHA1Shim* CSHA1Shim::NewL()

   280 	{

   281 	CSHA1Shim* self=CSHA1Shim::NewLC();

   282 	CleanupStack::Pop();

   283 	return self;	

   284 	}

   285 

   286 CSHA1Shim* CSHA1Shim::NewLC()

   287 	{

   288 	

   289 	CSHA1Shim* self=new(ELeave) CSHA1Shim();

   290 	CleanupStack::PushL(self);

   291 	self->ConstructL();

   292 	return self;	

   293 	

   294 	}

   295 

   296 CSHA1Shim::CSHA1Shim()

   297 	{		

   298 	}

   299 	

   300 	

   301 TInt CSHA1Shim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)

   302 	{

   303 	TInt ret(KErrNotSupported);

   304 	

   305 	if (KHashInterfaceUid.iUid==aExtensionId && iHashImpl)

   306 		{

   307 		a0=iHashImpl;

   308 		ret=KErrNone;	

   309 		}

   310 		

   311 	return ret;

   312 	}

   313 

   314 CSHA1Shim::~CSHA1Shim()

   315 	{

   316 	delete iHashImpl;			

   317 	}

   318 

   319 

   320 void CSHA1Shim::ConstructL()

   321 	{

   322 	CHashFactory::CreateHashL(iHashImpl,

   323 							KSha1Uid,

   324 							KHashModeUid,

   325 							NULL,

   326 							NULL);

   327 	}

   328 

   329 CMessageDigest* CSHA1Shim::CopyL()

   330 	{

   331 	CSHA1Shim* copy=new(ELeave) CSHA1Shim();

   332 	CleanupStack::PushL(copy);

   333 	copy->iHashImpl=iHashImpl->CopyL();

   334 	CleanupStack::Pop();

   335 	return copy;

   336 	}

   337 	

   338 CMessageDigest* CSHA1Shim::ReplicateL()

   339 	{

   340 	CSHA1Shim* copy=new(ELeave) CSHA1Shim();

   341 	CleanupStack::PushL(copy);

   342 	copy->iHashImpl=iHashImpl->ReplicateL();

   343 	CleanupStack::Pop();

   344 	return copy;

   345 	}

   346 

   347 TInt CSHA1Shim::BlockSize()

   348 	{

   349 	const TCharacteristics* ptr(NULL);

   350 	TRAPD(err, iHashImpl->GetCharacteristicsL(ptr);)

   351 	if (err)

   352 		{

   353 		return ((err>0)? KErrGeneral : err);

   354 		}	

   355 	const THashCharacteristics* hashPtr=static_cast<const THashCharacteristics*>(ptr);

   356 	return hashPtr->iBlockSize/8;

   357 	}

   358 

   359 TInt CSHA1Shim::HashSize()

   360 	{

   361 	const TCharacteristics* ptr(NULL);

   362 	TRAPD(err, iHashImpl->GetCharacteristicsL(ptr);)

   363 	if (err)

   364 		{

   365 		return ((err>0)? KErrGeneral : err);

   366 		}

   367 	const THashCharacteristics* hashPtr=static_cast<const THashCharacteristics*>(ptr);

   368 	return hashPtr->iOutputSize/8;

   369 	}

   370 

   371 void CSHA1Shim::Update(const TDesC8& aMessage)

   372 	{

   373 	iHashImpl->Update(aMessage);	

   374 	}

   375 	

   376 TPtrC8 CSHA1Shim::Final(const TDesC8& aMessage)

   377 	{

   378 	return iHashImpl->Final(aMessage);

   379 	}

   380 

   381 TPtrC8 CSHA1Shim::Final()

   382 	{

   383 	TPtrC8 ptr(KNullDesC8());

   384 	return iHashImpl->Final(ptr);

   385 	}

   386 		

   387 void CSHA1Shim::Reset()

   388 	{

   389 	iHashImpl->Reset();

   390 	}

   391 

   392 TPtrC8 CSHA1Shim::Hash(const TDesC8& aMessage)

   393 	{

   394 	return iHashImpl->Hash(aMessage);

   395 	}

   396 	

   397 

   398 //

   399 // Implementation of SHA2 shim

   400 //	

   401 	

   402 CSHA2Shim* CSHA2Shim::NewL(TSH2Algo aAlgorithmId)

   403 	{

   404 	CSHA2Shim* self=CSHA2Shim::NewLC(aAlgorithmId);

   405 	CleanupStack::Pop();

   406 	return self;	

   407 	}

   408 

   409 CSHA2Shim* CSHA2Shim::NewLC(TSH2Algo aAlgorithmId)

   410 	{

   411 	

   412 	CSHA2Shim* self=new(ELeave) CSHA2Shim();

   413 	CleanupStack::PushL(self);

   414 	self->ConstructL(aAlgorithmId);

   415 	return self;

   416 	}

   417 

   418 CSHA2Shim::CSHA2Shim()

   419 	{		

   420 	}

   421 	

   422 TInt CSHA2Shim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)

   423 	{

   424 	TInt ret(KErrNotSupported);

   425 	

   426 	if (KHashInterfaceUid.iUid==aExtensionId && iHashImpl)

   427 		{

   428 		a0=iHashImpl;

   429 		ret=KErrNone;	

   430 		}

   431 	return ret;

   432 	}

   433 

   434 CSHA2Shim::~CSHA2Shim()

   435 	{

   436 	delete iHashImpl;			

   437 	}

   438 

   439 void CSHA2Shim::ConstructL(TSH2Algo aAlgorithmId)

   440 	{

   441 	TUid algoId = {0};

   442 	switch(aAlgorithmId)

   443 		{

   444 		case E224Bit:

   445 			{

   446 			algoId = KSha224Uid;

   447 			break;

   448 			}

   449 		case E256Bit:

   450 			{

   451 			algoId = KSha256Uid;

   452 			break;

   453 			}

   454 		case E384Bit:

   455 			{

   456 			algoId = KSha384Uid;

   457 			break;

   458 			}

   459 		case E512Bit:

   460 			{

   461 			algoId = KSha512Uid;

   462 			break;

   463 			}

   464 		default:

   465 			User::Leave(KErrNotSupported);

   466 		}

   467 	

   468 	CHashFactory::CreateHashL(iHashImpl,

   469 							  algoId,

   470 							  KHashModeUid,

   471 							  NULL,

   472 							  NULL);				

   473 	}

   474 

   475 CMessageDigest* CSHA2Shim::CopyL()

   476 	{

   477 	CSHA2Shim* copy=new(ELeave) CSHA2Shim();

   478 	CleanupStack::PushL(copy);

   479 	copy->iHashImpl=iHashImpl->CopyL();

   480 	CleanupStack::Pop();

   481 	return copy;

   482 	}

   483 	

   484 CMessageDigest* CSHA2Shim::ReplicateL()

   485 	{

   486 	CSHA2Shim* copy=new(ELeave) CSHA2Shim();

   487 	CleanupStack::PushL(copy);

   488 	copy->iHashImpl=iHashImpl->ReplicateL();

   489 	CleanupStack::Pop();

   490 	return copy;

   491 	}

   492 

   493 TInt CSHA2Shim::BlockSize()

   494 	{

   495 	const TCharacteristics* ptr(NULL);

   496 	TRAPD(err, iHashImpl->GetCharacteristicsL(ptr);)

   497 	if (err)

   498 		{

   499 		return ((err>0)? KErrGeneral : err);

   500 		}	

   501 	const THashCharacteristics* hashPtr=static_cast<const THashCharacteristics*>(ptr);

   502 	return hashPtr->iBlockSize/8;

   503 	}

   504 

   505 TInt CSHA2Shim::HashSize()

   506 	{

   507 	const TCharacteristics* ptr(NULL);

   508 	TRAPD(err, iHashImpl->GetCharacteristicsL(ptr);)

   509 	if (err)

   510 		{

   511 		return ((err>0)? KErrGeneral : err);

   512 		}

   513 	const THashCharacteristics* hashPtr=static_cast<const THashCharacteristics*>(ptr);

   514 	return hashPtr->iOutputSize/8;

   515 	}

   516 

   517 void CSHA2Shim::Update(const TDesC8& aMessage)

   518 	{

   519 	iHashImpl->Update(aMessage);	

   520 	}

   521 	

   522 TPtrC8 CSHA2Shim::Final(const TDesC8& aMessage)

   523 	{

   524 	return iHashImpl->Final(aMessage);

   525 	}

   526 

   527 TPtrC8 CSHA2Shim::Final()

   528 	{

   529 	TPtrC8 ptr(KNullDesC8());

   530 	return iHashImpl->Final(ptr);

   531 	}

   532 		

   533 void CSHA2Shim::Reset()

   534 	{

   535 	iHashImpl->Reset();

   536 	}

   537 

   538 TPtrC8 CSHA2Shim::Hash(const TDesC8& aMessage)

   539 	{

   540 	return iHashImpl->Hash(aMessage);

   541 	}

   542 

   543 //

   544 // Implementation of HMAC shim

   545 //	

   546 

   547 CHMACShim* CHMACShim::NewL(const TDesC8& aKey, CMessageDigest* aDigest)

   548 	{

   549 	CHMACShim* self(0);

   550 	

   551 	// Check whether the hash contains an SPI plug-in

   552 	TAny* implPtr(0);

   553 	TInt err = aDigest->GetExtension(CryptoSpi::KHashInterface, implPtr, NULL);	

   554 	if (err == KErrNone && implPtr)

   555 		{

   556 		CryptoSpi::CHash* impl(static_cast<CryptoSpi::CHash*>(implPtr));

   557 		const CryptoSpi::TCharacteristics* c(0);

   558 		impl->GetCharacteristicsL(c);

   559 		const CryptoSpi::THashCharacteristics* hashCharacteristics(static_cast<const CryptoSpi::THashCharacteristics*>(c));

   560 			

   561 		

   562 		// Verify that the plug-in supports Hmac mode

   563 		if (hashCharacteristics->IsOperationModeSupported(CryptoSpi::KHmacModeUid))

   564 			{

   565 			

   566 	#ifndef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT				

   567 			// Make an own copy

   568 			CHash* myHash=impl->ReplicateL();

   569 			CleanupStack::PushL(myHash);	

   570 	#endif	

   571 			// Set the key

   572 			TKeyProperty keyProperty = {KHmacModeUid, KNullUid, KSymmetricKey, KNonEmbeddedKeyUid};

   573 		 	CCryptoParams* keyParam =CCryptoParams::NewLC();

   574 		 	keyParam->AddL(aKey, KHmacKeyParameterUid);

   575 		 	CKey* uniKey= CKey::NewLC(keyProperty, *keyParam);

   576 	#ifndef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT		

   577 		 	myHash->SetKeyL(*uniKey);		 			 	

   578 		 	CleanupStack::PopAndDestroy(2, keyParam);

   579 			// Set hash to Hmac mode			

   580 			myHash->SetOperationModeL(CryptoSpi::KHmacModeUid);

   581 			self = new(ELeave) CHMACShim(myHash, aDigest);

   582 			CleanupStack::Pop(myHash);

   583 	#else 	

   584 		 	TUid algorithmUID = algorithmUID.Uid(hashCharacteristics->cmn.iAlgorithmUID);

   585 			//Create a pointer for the Mac Implementation Object

   586 			CMac* macImpl = NULL;

   587 			CMacFactory::CreateMacL(macImpl,algorithmUID,*uniKey, NULL);

   588 			CleanupStack::PushL(macImpl);

   589 		 	self = new(ELeave) CHMACShim(macImpl, aDigest,uniKey, algorithmUID);

   590 		 	CleanupStack::Pop(macImpl);

   591 		 	CleanupStack::Pop(uniKey);			

   592 		 	CleanupStack::PopAndDestroy(keyParam);

   593 	#endif		 	

   594 			}

   595 		}				

   596 	return self;

   597 	}

   598 	

   599 #ifdef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT	

   600 

   601 CHMACShim::CHMACShim(CryptoSpi::CMac* aImpl, CMessageDigest* aDigest, CryptoSpi::CKey* aKey, TUid aAlgorithmUid)

   602 	: CHMAC(aDigest), iMacImpl(aImpl), iKey(aKey), iAlgorithmUid(aAlgorithmUid)

   603 	{		

   604 	}

   605 

   606 #else

   607 

   608 CHMACShim::CHMACShim(CryptoSpi::CHash* aImpl, CMessageDigest* aDigest)

   609 	: CHMAC(aDigest), iMacImpl(aImpl)

   610 	{		

   611 	}

   612 

   613 #endif

   614 

   615 CHMACShim::CHMACShim()

   616 	{		

   617 	}

   618 

   619 CHMACShim::~CHMACShim()

   620 	{

   621 	delete iMacImpl;

   622 #ifdef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT		

   623 	delete iKey;

   624 #endif

   625 	}

   626 

   627 TInt CHMACShim::BlockSize()

   628 	{

   629 	const TCharacteristics* ptr(NULL);

   630 	TRAPD(err, iMacImpl->GetCharacteristicsL(ptr));

   631 

   632 	if (err)

   633 		{

   634 		return ((err>0)? KErrGeneral : err);

   635 		}

   636 

   637 #ifndef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT			

   638 	const THashCharacteristics* hashPtr=static_cast<const THashCharacteristics*>(ptr);

   639 	return hashPtr->iBlockSize/8;

   640 #else		

   641 	const TMacCharacteristics* macPtr=static_cast<const TMacCharacteristics*>(ptr);

   642 	return macPtr->iHashAlgorithmChar->iBlockSize/8;

   643 #endif	

   644 	}

   645 

   646 TInt CHMACShim::HashSize()

   647 	{

   648 	const TCharacteristics* ptr(NULL);

   649 	TRAPD(err, iMacImpl->GetCharacteristicsL(ptr));

   650 	if (err)

   651 		{

   652 		return ((err>0)? KErrGeneral : err);

   653 		}

   654 

   655 #ifndef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT			

   656 	const THashCharacteristics* hashPtr=static_cast<const THashCharacteristics*>(ptr);

   657 	return hashPtr->iOutputSize/8;

   658 #else			

   659 	const TMacCharacteristics* macPtr=static_cast<const TMacCharacteristics*>(ptr);

   660 	return macPtr->iHashAlgorithmChar->iOutputSize/8;

   661 #endif	

   662 	}

   663 

   664 void CHMACShim::Update(const TDesC8& aMessage)

   665 	{

   666 #ifdef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT

   667 	// The error is ignored as the legacy code methods are non-leaving and they call 

   668 	// the new MAC interfaces which uses leaving methods for processing MAC value. 	

   669 	// This call always call the non-leaving legacy method.	

   670 	TRAP_IGNORE(iMacImpl->UpdateL(aMessage));

   671 #else

   672 	iMacImpl->Update(aMessage);

   673 #endif	

   674 	}

   675 	

   676 TPtrC8 CHMACShim::Final(const TDesC8& aMessage)

   677 	{

   678 #ifdef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT

   679 	TPtrC8 macPtr(KNullDesC8());

   680 	// The error is ignored as the legacy code methods are non-leaving and they call 

   681 	// the new MAC interfaces which uses leaving methods for processing MAC value. 	

   682 	// This call always call the non-leaving legacy method.	

   683 	TRAP_IGNORE(macPtr.Set(iMacImpl->FinalL(aMessage)));	

   684 	return macPtr;

   685 #else

   686 	return iMacImpl->Final(aMessage);

   687 #endif	

   688 	}

   689 

   690 TPtrC8 CHMACShim::Final()

   691 	{

   692 	TPtrC8 ptr(KNullDesC8());

   693 #ifdef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT

   694 	TPtrC8 macPtr(KNullDesC8());

   695 	// The error is ignored as the legacy code methods are non-leaving and they call 

   696 	// the new MAC interfaces which uses leaving methods for processing MAC value. 	

   697 	// This call always call the non-leaving legacy method.	

   698 	TRAP_IGNORE(macPtr.Set(iMacImpl->FinalL(ptr)));	

   699 	return macPtr;

   700 #else

   701 	return iMacImpl->Final(ptr);

   702 #endif	

   703 	}

   704 		

   705 void CHMACShim::Reset()

   706 	{

   707 	iMacImpl->Reset();

   708 	}

   709 	

   710 TPtrC8 CHMACShim::Hash(const TDesC8& aMessage)

   711 	{

   712 #ifdef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT	

   713 	TPtrC8 macPtr(KNullDesC8());

   714 	// The error is ignored as the legacy code methods are non-leaving and they call 

   715 	// the new MAC interfaces which uses leaving methods for processing MAC value. 	

   716 	// This call always call the non-leaving legacy method.	

   717 	TRAP_IGNORE(macPtr.Set(iMacImpl->MacL(aMessage)));	

   718 	return macPtr;

   719 #else

   720 	return iMacImpl->Hash(aMessage);

   721 #endif	

   722 	}

   723 	

   724 CMessageDigest* CHMACShim::ReplicateL()

   725 	{

   726 	CHMACShim* copy=new(ELeave) CHMACShim();

   727 	CleanupStack::PushL(copy);

   728 	copy->iMacImpl=iMacImpl->ReplicateL();

   729 	CleanupStack::Pop(copy);

   730 	return copy;	

   731 	}

   732 	

   733 CMessageDigest* CHMACShim::CopyL()

   734 	{

   735 	CHMACShim* copy=new(ELeave) CHMACShim();

   736 	CleanupStack::PushL(copy);

   737 	copy->iMacImpl=iMacImpl->CopyL();

   738 	CleanupStack::Pop(copy);

   739 	return copy;	

   740 	}

   741 

   742 //

   743 // Implemetation of MD4 shim

   744 //

   745 CMD4Shim* CMD4Shim::NewL()

   746 	{

   747 	CMD4Shim* self=CMD4Shim::NewLC();

   748 	CleanupStack::Pop();

   749 	return self;	

   750 	}

   751 

   752 CMD4Shim* CMD4Shim::NewLC()

   753 	{

   754 	CMD4Shim* self=new(ELeave) CMD4Shim();

   755 	CleanupStack::PushL(self);

   756 	self->ConstructL();

   757 	return self;	

   758 	}

   759 

   760 CMD4Shim::CMD4Shim()

   761 	{		

   762 	}

   763 	

   764 TInt CMD4Shim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)

   765 	{

   766 	TInt ret(KErrNotSupported);

   767 	

   768 	if (KHashInterfaceUid.iUid==aExtensionId && iHashImpl)

   769 		{

   770 		a0=iHashImpl;

   771 		ret=KErrNone;	

   772 		}

   773 		

   774 	return ret;

   775 	}

   776 

   777 CMD4Shim::~CMD4Shim()

   778 	{

   779 	delete iHashImpl;				

   780 	}

   781 

   782 

   783 void CMD4Shim::ConstructL()

   784 	{	

   785 	CHashFactory::CreateHashL(iHashImpl,KMd4Uid,KHashModeUid,NULL,NULL);

   786 	}

   787 

   788 CMessageDigest* CMD4Shim::CopyL()

   789 	{

   790 	CMD4Shim* copy=new(ELeave) CMD4Shim();

   791 	CleanupStack::PushL(copy);

   792 	copy->iHashImpl=iHashImpl->CopyL();

   793 	CleanupStack::Pop();

   794 	return copy;

   795 	}

   796 

   797 CMessageDigest* CMD4Shim::ReplicateL()

   798 	{

   799 	CMD4Shim* copy=new(ELeave) CMD4Shim();

   800 	CleanupStack::PushL(copy);

   801 	copy->iHashImpl=iHashImpl->ReplicateL();

   802 	CleanupStack::Pop();

   803 	return copy;

   804 	}

   805 

   806 TInt CMD4Shim::BlockSize()

   807 	{

   808 	const TCharacteristics* ptr(NULL);

   809 	TRAPD(err, iHashImpl->GetCharacteristicsL(ptr);)

   810 	if (err)

   811 		{

   812 		return ((err>0)? KErrGeneral : err);

   813 		}		

   814 	const THashCharacteristics* hashPtr=static_cast<const THashCharacteristics*>(ptr);

   815 	return hashPtr->iBlockSize/8;

   816 	}

   817 

   818 TInt CMD4Shim::HashSize()

   819 	{

   820 	const TCharacteristics* ptr(NULL);

   821 	TRAPD(err, iHashImpl->GetCharacteristicsL(ptr);)

   822 	if (err)

   823 		{

   824 		return ((err>0)? KErrGeneral : err);

   825 		}		

   826 	const THashCharacteristics* hashPtr=static_cast<const THashCharacteristics*>(ptr);

   827 	return hashPtr->iOutputSize/8;

   828 	}

   829 

   830 void CMD4Shim::Update(const TDesC8& aMessage)

   831 	{

   832 	iHashImpl->Update(aMessage);	

   833 	}

   834 	

   835 TPtrC8 CMD4Shim::Final(const TDesC8& aMessage)

   836 	{

   837 	return iHashImpl->Final(aMessage);

   838 	}

   839 

   840 TPtrC8 CMD4Shim::Final()

   841 	{

   842 	TPtrC8 ptr(KNullDesC8());

   843 	return iHashImpl->Final(ptr);

   844 	}

   845 		

   846 void CMD4Shim::Reset()

   847 	{

   848 	iHashImpl->Reset();

   849 	}

   850 	

   851 

   852 TPtrC8 CMD4Shim::Hash(const TDesC8& aMessage)

   853 	{

   854 	return iHashImpl->Hash(aMessage);

   855 	}

   856
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