cms/src/CCMSX509CertificateList.cpp
changeset 0 164170e6151a
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-1:000000000000 0:164170e6151a
       
     1 /*
       
     2 * Copyright (c) 2002 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 "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 *
       
    16 */
       
    17 
       
    18 
       
    19 // INCLUDE FILES
       
    20 #include    "CCMSX509CertificateList.h"
       
    21 #include    "TCMSTimeUtil.h"
       
    22 #include    "CCMSX509AlgorithmIdentifier.h"
       
    23 #include <x509cert.h>
       
    24 #include <asn1dec.h>
       
    25 #include <asn1enc.h>
       
    26 
       
    27 // CONSTANTS
       
    28 const TInt KDefaultGranularity = 1;
       
    29 const TInt KCertificateListParams = 3;
       
    30 const TInt KMinTBSCertListParams = 3;
       
    31 const TInt KMaxTBSCertListParams = 7;
       
    32 const TInt KDefaultVersion = 1;
       
    33 const TInt KMinRevokedCertParams = 2;
       
    34 const TInt KMaxRevokedCertParams = 3;
       
    35 
       
    36 // ============================ MEMBER FUNCTIONS ===============================
       
    37 
       
    38 // -----------------------------------------------------------------------------
       
    39 // CCMSX509RevokedCertificate::CCMSX509RevokedCertificate
       
    40 // C++ default constructor can NOT contain any code, that
       
    41 // might leave.
       
    42 // -----------------------------------------------------------------------------
       
    43 
       
    44 EXPORT_C CCMSX509RevokedCertificate::CCMSX509RevokedCertificate()
       
    45 	{
       
    46 	}
       
    47 
       
    48 // Destructor
       
    49 CCMSX509RevokedCertificate::~CCMSX509RevokedCertificate()
       
    50 	{
       
    51 	if( iExtensions )
       
    52 		{
       
    53 		iExtensions->ResetAndDestroy();
       
    54 		delete iExtensions;
       
    55 		}
       
    56 	}
       
    57 
       
    58 // -----------------------------------------------------------------------------
       
    59 // CCMSX509RevokedCertificate::CCMSX509RevokedCertificate
       
    60 // C++ default constructor can NOT contain any code, that
       
    61 // might leave.
       
    62 // -----------------------------------------------------------------------------
       
    63 EXPORT_C CCMSX509CertificateListParameters::CCMSX509CertificateListParameters()
       
    64 	{
       
    65 	}
       
    66 
       
    67 // Destructor
       
    68 CCMSX509CertificateListParameters::~CCMSX509CertificateListParameters()
       
    69 	{
       
    70 	delete iIssuer;
       
    71 	delete iSignatureAlgorithm;
       
    72 	delete iSignature;
       
    73 	if( iRevokedCertificates )
       
    74 		{
       
    75 		iRevokedCertificates->ResetAndDestroy();
       
    76 		delete iRevokedCertificates;
       
    77 		}
       
    78 
       
    79 	if( iExtensions )
       
    80 		{
       
    81 		iExtensions->ResetAndDestroy();
       
    82 		delete iExtensions;
       
    83 		}
       
    84 	}
       
    85 
       
    86 // -----------------------------------------------------------------------------
       
    87 // CCMSX509CertificateList::CCMSX509CertificateList
       
    88 // C++ default constructor can NOT contain any code, that
       
    89 // might leave.
       
    90 // -----------------------------------------------------------------------------
       
    91 //
       
    92 EXPORT_C CCMSX509CertificateList::CCMSX509CertificateList()
       
    93     {
       
    94     }
       
    95 
       
    96 // -----------------------------------------------------------------------------
       
    97 // CCMSX509CertificateList::ConstructL
       
    98 // Symbian 2nd phase constructor can leave.
       
    99 // -----------------------------------------------------------------------------
       
   100 //
       
   101 EXPORT_C void CCMSX509CertificateList::ConstructL()
       
   102     {
       
   103 	iParams = new(ELeave) CCMSX509CertificateListParameters();
       
   104 	// version is always v2(1)
       
   105 	iParams->iVersion = KDefaultVersion;
       
   106     }
       
   107 
       
   108 // -----------------------------------------------------------------------------
       
   109 // CCMSX509CertificateList::ConstructL
       
   110 // Symbian 2nd phase constructor can leave.
       
   111 // -----------------------------------------------------------------------------
       
   112 //
       
   113 EXPORT_C void CCMSX509CertificateList::ConstructL(
       
   114 	const CX509Certificate& aSigningCertificate,
       
   115 	const CArrayPtrFlat<CX509Certificate>& aRevokedCertificates )
       
   116     {
       
   117 	ConstructL();
       
   118 
       
   119 	// setting signature
       
   120 	const CSigningAlgorithmIdentifier& signAlgorithm =
       
   121 		aSigningCertificate.SigningAlgorithm();
       
   122 	iParams->iSignatureAlgorithm =
       
   123 		CCMSX509AlgorithmIdentifier::NewL( signAlgorithm.AsymmetricAlgorithm(),
       
   124 										   signAlgorithm.DigestAlgorithm() );
       
   125 
       
   126 	// setting issuer
       
   127 	iParams->iIssuer =
       
   128 		CX500DistinguishedName::NewL( aSigningCertificate.IssuerName() );
       
   129 
       
   130 	// setting validity
       
   131 	const CValidityPeriod& validity = aSigningCertificate.ValidityPeriod();
       
   132 	iParams->iThisUpdate = validity.Start();
       
   133 	iParams->iNextUpdate = validity.Finish();
       
   134 
       
   135 
       
   136 	// copying revoked certificates
       
   137 	TInt revCerts = aRevokedCertificates.Count();
       
   138 	if( revCerts > 0 )
       
   139 		{
       
   140 		iParams->iRevokedCertificates =
       
   141 			new( ELeave )CArrayPtrFlat< CCMSX509RevokedCertificate >
       
   142 												( KDefaultGranularity );
       
   143 		for( TInt i = 0; i < revCerts; i++ )
       
   144 			{
       
   145 			CX509Certificate* cert = aRevokedCertificates[ i ];
       
   146 			CCMSX509RevokedCertificate* tmpRevCer =
       
   147 				new(ELeave) CCMSX509RevokedCertificate();
       
   148 			CleanupStack::PushL( tmpRevCer );
       
   149 			// convert serial from des to int
       
   150             TPtrC8 serialDes = cert->SerialNumber();
       
   151             TInt length = serialDes.Size();
       
   152             const TUint8* ptr = serialDes.Ptr();
       
   153             TInt serial = ( ptr[ 0 ] & 0x80 ) ? -1 : 0;
       
   154             for( TInt j = 0; j < length; j++ )
       
   155                 {
       
   156                 serial <<= 8;
       
   157                 serial += *ptr++;
       
   158                 }
       
   159 			tmpRevCer->iUserCertificateSerialNumber = serial;
       
   160 
       
   161 			const CValidityPeriod& reValidity = cert->ValidityPeriod();
       
   162 			tmpRevCer->iRevokationDate = reValidity.Start();
       
   163 
       
   164 			// copying extensions
       
   165 			const CArrayPtrFlat<CX509CertExtension>& extensions =
       
   166 				cert->Extensions();
       
   167 			TInt extensionCount = extensions.Count();
       
   168 			if( extensionCount > 0 )
       
   169 				{
       
   170 				tmpRevCer->iExtensions =
       
   171 					new(ELeave) CArrayPtrFlat<CX509CertExtension>
       
   172 														( KDefaultGranularity );
       
   173 				for( TInt j = 0; j < extensionCount; j++ )
       
   174 					{
       
   175 					CX509CertExtension* ext = extensions[ j ];
       
   176 					CX509CertExtension* tmpExt =
       
   177 									CX509CertExtension::NewLC( *ext );
       
   178 					tmpRevCer->iExtensions->AppendL( tmpExt );
       
   179 					CleanupStack::Pop( tmpExt );
       
   180 					}
       
   181 				}
       
   182 			iParams->iRevokedCertificates->AppendL( tmpRevCer );
       
   183 			CleanupStack::Pop( tmpRevCer );
       
   184 			}
       
   185 		}
       
   186 	// copying possible extensions
       
   187 	TInt extensionCount = aSigningCertificate.Extensions().Count();
       
   188 	if( extensionCount > 0 )
       
   189 		{
       
   190 		iParams->iExtensions =
       
   191 			new( ELeave )CArrayPtrFlat< CX509CertExtension >
       
   192 														( KDefaultGranularity );
       
   193 		const CArrayPtrFlat< CX509CertExtension >& extensions =
       
   194 			aSigningCertificate.Extensions();
       
   195 
       
   196 		for( TInt i = 0; i < extensionCount; i++ )
       
   197 			{
       
   198 			CX509CertExtension* copy = CX509CertExtension::NewL( *extensions[ i ] );
       
   199 			CleanupStack::PushL( copy );
       
   200 			iParams->iExtensions->AppendL( copy );
       
   201 			CleanupStack::Pop( copy );
       
   202 			}
       
   203 		}
       
   204 
       
   205 	// copying signature
       
   206 	iParams->iSignature = aSigningCertificate.Signature().AllocL();
       
   207     }
       
   208 
       
   209 // -----------------------------------------------------------------------------
       
   210 // CCMSX509CertificateList::NewLC
       
   211 // Two-phased constructor.
       
   212 // -----------------------------------------------------------------------------
       
   213 //
       
   214 EXPORT_C CCMSX509CertificateList* CCMSX509CertificateList::NewLC()
       
   215 	{
       
   216     CCMSX509CertificateList* self = new( ELeave ) CCMSX509CertificateList();
       
   217     CleanupStack::PushL( self );
       
   218     self->ConstructL();
       
   219     return self;
       
   220 	}
       
   221 
       
   222 // -----------------------------------------------------------------------------
       
   223 // CCMSX509CertificateList::NewLC
       
   224 // Two-phased constructor.
       
   225 // -----------------------------------------------------------------------------
       
   226 //
       
   227 EXPORT_C CCMSX509CertificateList* CCMSX509CertificateList::NewLC(
       
   228 	const CX509Certificate& aSigningCertificate,
       
   229 	const CArrayPtrFlat<CX509Certificate>& aRevokedCertificates  )
       
   230     {
       
   231     CCMSX509CertificateList* self = new( ELeave ) CCMSX509CertificateList();
       
   232     CleanupStack::PushL( self );
       
   233     self->ConstructL( aSigningCertificate,
       
   234     				  aRevokedCertificates );
       
   235     return self;
       
   236     }
       
   237 
       
   238 // -----------------------------------------------------------------------------
       
   239 // CCMSX509CertificateList::NewLC
       
   240 // Two-phased constructor.
       
   241 // -----------------------------------------------------------------------------
       
   242 //
       
   243 EXPORT_C CCMSX509CertificateList* CCMSX509CertificateList::NewLC(
       
   244 	CCMSX509CertificateListParameters& aParameters )
       
   245     {
       
   246     CCMSX509CertificateList* self = new( ELeave ) CCMSX509CertificateList();
       
   247     CleanupStack::PushL( self );
       
   248     self->SetParametersL( aParameters );
       
   249     return self;
       
   250     }
       
   251 
       
   252 // Destructor
       
   253 CCMSX509CertificateList::~CCMSX509CertificateList()
       
   254     {
       
   255 	delete iParams;
       
   256     }
       
   257 
       
   258 // -----------------------------------------------------------------------------
       
   259 // CCMSX509CertificateList::DecodeL
       
   260 // Decrypts raw data to this instance
       
   261 // -----------------------------------------------------------------------------
       
   262 void CCMSX509CertificateList::DecodeL( const TDesC8& aRawData )
       
   263 	{
       
   264 	CCMSX509CertificateListParameters* params =
       
   265 		new(ELeave) CCMSX509CertificateListParameters();
       
   266 	CleanupStack::PushL( params );
       
   267 
       
   268 	CArrayPtr<TASN1DecGeneric>* certificateList = DecodeSequenceLC( aRawData,
       
   269 															  KCertificateListParams, // 3
       
   270 															  KCertificateListParams );
       
   271 
       
   272 
       
   273 	// decode tbsCertList
       
   274 	CArrayPtr<TASN1DecGeneric>* tbsCertList =
       
   275 		DecodeSequenceLC( certificateList->At( 0 )->Encoding(),
       
   276 						  KMinTBSCertListParams,	// 3
       
   277 						  KMaxTBSCertListParams );	// 7
       
   278 
       
   279 	TInt pos = 0;
       
   280 	// decode Version (optional)
       
   281 	TASN1DecGeneric ver( *tbsCertList->At( pos ) );
       
   282 	if( ver.Tag() == EASN1Integer )
       
   283 		{
       
   284 		TASN1DecInteger version;
       
   285 		params->iVersion = version.DecodeDERShortL( ver );
       
   286 		pos++;
       
   287 		}
       
   288 	else
       
   289 		{
       
   290 		// always ver v2( 1 )
       
   291 		params->iVersion = KDefaultVersion;
       
   292 		}
       
   293 
       
   294 	// decode Signature algorithm
       
   295 	CCMSX509AlgorithmIdentifier* signAlg = CCMSX509AlgorithmIdentifier::NewL();
       
   296 	CleanupStack::PushL( signAlg );
       
   297 	signAlg->DecodeL( tbsCertList->At( pos++ )->Encoding() );
       
   298 	params->iSignatureAlgorithm = signAlg;
       
   299 	CleanupStack::Pop( signAlg );
       
   300 
       
   301 	// decode Issuer
       
   302 	params->iIssuer =
       
   303 		CX500DistinguishedName::NewL( tbsCertList->At( pos++ )->Encoding() );
       
   304 
       
   305 	// check that we have enough parameters for mandatory thisUpdate
       
   306 	if( tbsCertList->Count() <= pos )
       
   307 		{
       
   308 		User::Leave( KErrArgument );
       
   309 		}
       
   310 
       
   311 	// decode thisUpdate
       
   312 	params->iThisUpdate = TCMSTimeUtil::ConvertToTimeL(
       
   313 									  tbsCertList->At( pos++ )->Encoding() );
       
   314 
       
   315 	// decode nextUpdate (optional)
       
   316 	if( ( tbsCertList->Count() > pos ) &&
       
   317 		( ( tbsCertList->At( pos )->Tag() == EASN1UTCTime ) ||
       
   318 		  ( tbsCertList->At( pos )->Tag() == EASN1GeneralizedTime ) ) )
       
   319 		{
       
   320 		params->iNextUpdate = TCMSTimeUtil::ConvertToTimeL(
       
   321 									  tbsCertList->At( pos++ )->Encoding() );
       
   322 		}
       
   323 
       
   324 	// decode revokedCerts (optional)
       
   325 	if( ( tbsCertList->Count() > pos ) &&
       
   326 		( tbsCertList->At( pos )->Tag() == EASN1Sequence ) )
       
   327 		{
       
   328 		// if it is sequence then it must be set of revoked certificates
       
   329 		CArrayPtr<TASN1DecGeneric>* revokedCerts =
       
   330 				 DecodeSequenceLC( tbsCertList->At( pos++ )->Encoding() );
       
   331 		TInt rCertCount = revokedCerts->Count();
       
   332 		params->iRevokedCertificates =
       
   333 			new(ELeave)CArrayPtrFlat< CCMSX509RevokedCertificate >
       
   334 													( KDefaultGranularity );
       
   335 		for( TInt i = 0; i < rCertCount; i++ )
       
   336 			{
       
   337 			// decode certificate
       
   338 			CArrayPtr<TASN1DecGeneric>* rCert =
       
   339 					 DecodeSequenceLC( revokedCerts->At( i )->Encoding(),
       
   340 					 KMinRevokedCertParams, // 2
       
   341 					 KMaxRevokedCertParams ); // 3
       
   342 			CCMSX509RevokedCertificate* tmpCert =
       
   343 				new( ELeave )CCMSX509RevokedCertificate;
       
   344 			CleanupStack::PushL( tmpCert );
       
   345 
       
   346 			// decode serial number
       
   347 			TASN1DecInteger serial;
       
   348 			tmpCert->iUserCertificateSerialNumber =
       
   349 									serial.DecodeDERShortL( *rCert->At( 0 ) );
       
   350 
       
   351 			// decode revocationDate
       
   352 			tmpCert->iRevokationDate = TCMSTimeUtil::ConvertToTimeL(
       
   353 										rCert->At( 1 )->Encoding() );
       
   354 
       
   355 			// decode possible extensions
       
   356 			if( rCert->Count() == KMaxRevokedCertParams )
       
   357 				{
       
   358 				tmpCert->iExtensions = DecodeExtensionsL( rCert->At( 2 ) );
       
   359 				}
       
   360 			params->iRevokedCertificates->AppendL( tmpCert );
       
   361 
       
   362 			CleanupStack::Pop( tmpCert );
       
   363 			CleanupStack::PopAndDestroy( rCert );
       
   364 			}
       
   365 		CleanupStack::PopAndDestroy( revokedCerts );
       
   366 		}
       
   367 	// decode extensions (optional), tagged with 0
       
   368 	if( ( tbsCertList->Count() > pos ) &&
       
   369 		( tbsCertList->At( pos )->Tag() == 0 ) )
       
   370 		{
       
   371 		TASN1DecGeneric extens( tbsCertList->At( pos )->GetContentDER() );
       
   372         extens.InitL();
       
   373 		params->iExtensions = DecodeExtensionsL( &extens );
       
   374 		}
       
   375 
       
   376 	CleanupStack::PopAndDestroy( tbsCertList );
       
   377 
       
   378 	// decode signature algorithm,
       
   379 	// just check that it is same as
       
   380 	// already set one
       
   381 	signAlg = CCMSX509AlgorithmIdentifier::NewL();
       
   382 	CleanupStack::PushL( signAlg );
       
   383 	signAlg->DecodeL( certificateList->At( 1 )->Encoding() );
       
   384 	if( !( signAlg->AlgorithmIdentifier() ==
       
   385 		   params->iSignatureAlgorithm->AlgorithmIdentifier() ) )
       
   386 		{
       
   387 		User::Leave( KErrArgument );
       
   388 		}
       
   389 	CleanupStack::PopAndDestroy( signAlg );
       
   390 
       
   391 	// decode signature
       
   392 	TASN1DecBitString signature;
       
   393 	params->iSignature = signature.ExtractOctetStringL( *certificateList->At( 2 ) );
       
   394 	CleanupStack::PopAndDestroy( certificateList );
       
   395 
       
   396 	delete iParams;
       
   397 	iParams = params;
       
   398 	CleanupStack::Pop( params );
       
   399 	}
       
   400 // -----------------------------------------------------------------------------
       
   401 // CCMSX509CertificateList::DecodeExtensionsL
       
   402 // Decodes Extensions
       
   403 // -----------------------------------------------------------------------------
       
   404 CArrayPtrFlat<CX509CertExtension>* CCMSX509CertificateList::DecodeExtensionsL(
       
   405 	const TASN1DecGeneric* aExtensions )
       
   406 	{
       
   407 	CArrayPtr<TASN1DecGeneric>* extens =
       
   408 			 DecodeSequenceLC( aExtensions->Encoding() );
       
   409 	TInt extensionCount = extens->Count();
       
   410 	CArrayPtrFlat< CX509CertExtension >* tmpExtensions =
       
   411 		new(ELeave)CArrayPtrFlat< CX509CertExtension >( KDefaultGranularity );
       
   412 	CleanupStack::PushL( tmpExtensions );
       
   413 	CleanupResetAndDestroyPushL( *tmpExtensions );
       
   414 	for( TInt j = 0; j < extensionCount; j++ )
       
   415 		{
       
   416 		CX509CertExtension* extension =
       
   417 			CX509CertExtension::NewLC( extens->At( j )->Encoding() );
       
   418 		tmpExtensions->AppendL( extension );
       
   419 		CleanupStack::Pop( extension );
       
   420 		}
       
   421 	CleanupStack::Pop( tmpExtensions ); // ResetAndDestroy
       
   422 	CleanupStack::Pop( tmpExtensions ); // normal cleanup
       
   423 	CleanupStack::PopAndDestroy( extens );
       
   424 	return tmpExtensions;
       
   425 	}
       
   426 
       
   427 // -----------------------------------------------------------------------------
       
   428 // CCMSX509CertificateList::EncoderLC
       
   429 // Returns ASN1 encoder for this instance
       
   430 // -----------------------------------------------------------------------------
       
   431 
       
   432 CASN1EncBase* CCMSX509CertificateList::EncoderLC() const
       
   433 	{
       
   434 	CASN1EncSequence* root = CASN1EncSequence::NewLC();
       
   435 
       
   436 	// encoding tbsCertList
       
   437 	CASN1EncSequence* tbsCertList = CASN1EncSequence::NewLC();
       
   438 
       
   439 	// encoding version
       
   440 	CASN1EncInt* version = CASN1EncInt::NewLC( KDefaultVersion );
       
   441 	tbsCertList->AddAndPopChildL( version );
       
   442 
       
   443 	// encoding signature
       
   444 	HBufC8* signDes;
       
   445 	iParams->iSignatureAlgorithm->EncodeL( signDes );
       
   446 	CleanupStack::PushL( signDes );
       
   447 	CASN1EncEncoding* signatureEnc =
       
   448 		CASN1EncEncoding::NewLC( *signDes );
       
   449 	tbsCertList->AddAndPopChildL( signatureEnc );
       
   450 	CleanupStack::PopAndDestroy( signDes );
       
   451 
       
   452 	// encoding issuer
       
   453 	CASN1EncSequence* issuer = iParams->iIssuer->EncodeASN1LC();
       
   454 	tbsCertList->AddAndPopChildL( issuer );
       
   455 
       
   456 	// encoding thisUpdate
       
   457 	CASN1EncBase* thisUpdate =
       
   458 		TCMSTimeUtil::ConvertToEncoderLC( iParams->iThisUpdate );
       
   459 	tbsCertList->AddAndPopChildL( thisUpdate );
       
   460 
       
   461 	// encoding nextUpdate
       
   462 	CASN1EncBase* nextUpdate =
       
   463 		TCMSTimeUtil::ConvertToEncoderLC( iParams->iNextUpdate );
       
   464 	tbsCertList->AddAndPopChildL( nextUpdate );
       
   465 
       
   466 	// encoding possible revokedCerts
       
   467 	if( iParams->iRevokedCertificates &&
       
   468 		iParams->iRevokedCertificates->Count() )
       
   469 		{
       
   470 		CASN1EncSequence* revokedCerts = CASN1EncSequence::NewLC();
       
   471 		TInt numOfRevokedCerts = iParams->iRevokedCertificates->Count();
       
   472 
       
   473 		for( TInt i = 0; i < numOfRevokedCerts; i++ )
       
   474 			{
       
   475 			// encoding certificate
       
   476 			CASN1EncSequence* revokedCertificate = CASN1EncSequence::NewLC();
       
   477 
       
   478 			CCMSX509RevokedCertificate* cert = iParams->iRevokedCertificates->At( i );
       
   479 			// encoding serial number
       
   480 			CASN1EncInt* serialEnc =
       
   481 				CASN1EncInt::NewLC( cert->iUserCertificateSerialNumber );
       
   482 			revokedCertificate->AddAndPopChildL( serialEnc );
       
   483 
       
   484 			// encoding revocationDate
       
   485 			CASN1EncBase* revocationDate =
       
   486 				TCMSTimeUtil::ConvertToEncoderLC( cert->iRevokationDate );
       
   487 			revokedCertificate->AddAndPopChildL( revocationDate );
       
   488 
       
   489 			// encoding possible extensions
       
   490 			CASN1EncSequence* extensions = EncodeExtensionsLC( cert->iExtensions );
       
   491 			if( extensions )
       
   492 				{
       
   493 				revokedCertificate->AddAndPopChildL( extensions );
       
   494 				}
       
   495 			revokedCerts->AddAndPopChildL( revokedCertificate );
       
   496 			}
       
   497 		tbsCertList->AddAndPopChildL( revokedCerts );
       
   498 		}
       
   499 
       
   500 	// encoding possible extensions
       
   501 	CASN1EncSequence* ext = EncodeExtensionsLC( iParams->iExtensions );
       
   502 	if( ext )
       
   503 		{
       
   504 		CleanupStack::Pop( ext );
       
   505 		// this will take ownership of the extensions
       
   506 		// tagging extensions with value 0
       
   507 		CASN1EncExplicitTag* explExt =
       
   508 			CASN1EncExplicitTag::NewLC( ext, 0 );
       
   509 		tbsCertList->AddAndPopChildL( explExt );
       
   510 		}
       
   511 
       
   512 	root->AddAndPopChildL( tbsCertList );
       
   513 
       
   514 	// encoding signatureValue
       
   515 	iParams->iSignatureAlgorithm->EncodeL( signDes );
       
   516 	CleanupStack::PushL( signDes );
       
   517 	signatureEnc =
       
   518 		CASN1EncEncoding::NewLC( *signDes );
       
   519 	root->AddAndPopChildL( signatureEnc );
       
   520 	CleanupStack::PopAndDestroy( signDes );
       
   521 
       
   522 	// encoding signature
       
   523 	CASN1EncBitString* signatureBitString =
       
   524 		CASN1EncBitString::NewLC( *iParams->iSignature );
       
   525 	root->AddAndPopChildL( signatureBitString );
       
   526 
       
   527 	return root;
       
   528 	}
       
   529 
       
   530 // -----------------------------------------------------------------------------
       
   531 // CCMSX509CertificateList::EncodeExtensionsLC
       
   532 // Encodes Extensions
       
   533 // -----------------------------------------------------------------------------
       
   534 CASN1EncSequence* CCMSX509CertificateList::EncodeExtensionsLC(
       
   535 	const CArrayPtrFlat<CX509CertExtension>* aExtensions ) const
       
   536 	{
       
   537 	CASN1EncSequence* extensionsEnc = NULL;
       
   538 	if(	  aExtensions &&
       
   539 		( aExtensions->Count() > 0 ) )
       
   540 		{
       
   541 		TInt extensionCount = aExtensions->Count();
       
   542 		extensionsEnc = CASN1EncSequence::NewLC();
       
   543 		for( TInt i = 0; i < extensionCount; i++ )
       
   544 			{
       
   545 			CASN1EncSequence* extEnc = CASN1EncSequence::NewLC();
       
   546 			CX509CertExtension* extension = aExtensions->At( i );
       
   547 			// encoding id
       
   548 			CASN1EncObjectIdentifier* id =
       
   549 				CASN1EncObjectIdentifier::NewLC( extension->Id() );
       
   550 			extEnc->AddAndPopChildL( id );
       
   551 
       
   552 			// encoding possible critical flag
       
   553 			if( extension->Critical() )
       
   554 				{
       
   555 				CASN1EncBoolean* critical =
       
   556 					CASN1EncBoolean::NewLC( ETrue );
       
   557 				extEnc->AddAndPopChildL( critical );
       
   558 				}
       
   559 			// encoding data, have to decode it before encoding it again
       
   560 			// because CASN1EncEncoding changes TagType to Constructed
       
   561 			TASN1DecOctetString dataDec;
       
   562 			TInt pos = 0;
       
   563 			HBufC8* data = dataDec.DecodeDERL( extension->Data(), pos );
       
   564 			CleanupStack::PushL( data );
       
   565 			CASN1EncOctetString* dataEnc =
       
   566 				CASN1EncOctetString::NewLC( *data );
       
   567 			extEnc->AddAndPopChildL( dataEnc );
       
   568 			CleanupStack::PopAndDestroy( data );
       
   569 
       
   570 			extensionsEnc->AddAndPopChildL( extEnc );
       
   571 			}
       
   572 		}
       
   573 	return extensionsEnc;
       
   574 	}
       
   575 
       
   576 // -----------------------------------------------------------------------------
       
   577 // CCMSX509CertificateList::Parameters
       
   578 // Getter for Signing Certificate
       
   579 // -----------------------------------------------------------------------------
       
   580 EXPORT_C const CCMSX509CertificateListParameters&
       
   581 	CCMSX509CertificateList::Parameters() const
       
   582 	{
       
   583 	return *iParams;
       
   584 	}
       
   585 
       
   586 // -----------------------------------------------------------------------------
       
   587 // CCMSX509CertificateList::SetParametersL
       
   588 // Setter for signing certificate, takes ownership
       
   589 // -----------------------------------------------------------------------------
       
   590 EXPORT_C void CCMSX509CertificateList::SetParametersL(
       
   591 	CCMSX509CertificateListParameters& aParameters  )
       
   592 	{
       
   593 	// some sanity checks
       
   594 	if( !aParameters.iIssuer ||
       
   595 		!aParameters.iSignature ||
       
   596 		!aParameters.iSignatureAlgorithm ||
       
   597 	   ( aParameters.iVersion != KDefaultVersion ) )
       
   598 		{
       
   599 		User::Leave( KErrArgument );
       
   600 		}
       
   601 	delete iParams;
       
   602 	iParams = &aParameters;
       
   603 	}
       
   604 
       
   605 //  End of File