author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:33:58 +0100 | |
branch | RCL_3 |
changeset 58 | 8d540f55e491 |
parent 57 | abbed5a4b42a |
permissions | -rw-r--r-- |
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// Copyright (c) 2006-2009 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 "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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#include <e32cmn.h> |
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#include "ipseccrypto.h" |
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#include <networking/ipsecerr.h> |
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#include <des.h> |
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#include <3des.h> |
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#include <rijndael.h> |
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#include <hash.h> |
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#include "keys.h" |
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#include <cryptospi/cryptospidef.h> |
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#include "cryptosymmetriccipherapi.h" |
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#ifdef SYMBIAN_IPSEC_VOIP_SUPPORT |
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#include "ruleselector.h" |
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#include "plugincharacteristics.h" |
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#include "cryptospistateapi.h" |
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#include "cryptoparams.h" |
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#include <cryptospi/cryptomacapi.h> |
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using namespace CryptoSpi; |
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#endif // SYMBIAN_IPSEC_VOIP_SUPPORT |
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#define DES_CBLOCK_SIZE 8 |
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#define AES_CBLOCK_SIZE 16 |
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#define SHA_DIGEST_LENGTH 20 |
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#define MD5_DIGEST_LENGTH 16 |
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#define SHA_CBLOCK 64 |
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#define MD5_CBLOCK 64 |
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// |
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class CMessageDigestSymbian : public CMessageDigestCrypto |
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/** |
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* Generic Hash engine wrapper |
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*/ |
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{ |
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public: |
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CMessageDigestSymbian(CMessageDigest *aDigest); |
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virtual void Init(); |
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virtual void Update(const TDesC8& aMessage); |
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virtual void Final(TDes8& aDigest); |
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static void FillinInfoSha1(TAlgorithmDesc &anEntry); |
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static void FillinInfoMd5(TAlgorithmDesc &anEntry); |
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~CMessageDigestSymbian(); |
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private: |
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CMessageDigest *iDigest; |
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}; |
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CMessageDigestSymbian::CMessageDigestSymbian(CMessageDigest *aDigest) : iDigest(aDigest) |
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{ |
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ASSERT(aDigest); |
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} |
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void CMessageDigestSymbian::Init() |
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{ |
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ASSERT(iDigest); |
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iDigest->Reset(); |
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} |
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void CMessageDigestSymbian::Update(const TDesC8& aMessage) |
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{ |
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ASSERT(iDigest); |
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iDigest->Update(aMessage); |
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} |
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void CMessageDigestSymbian::Final(TDes8& aDigest) |
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{ |
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ASSERT(iDigest); |
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aDigest.Copy(iDigest->Final()); |
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} |
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CMessageDigestSymbian::~CMessageDigestSymbian() |
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{ |
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delete iDigest; |
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} |
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// |
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// CProtocolEay::AlgorithmList + algorithm specific FillinInfo's |
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// |
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// return descriptions of the algorithms supported by this module |
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// |
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static void FillinInfoDescbc(TAlgorithmDesc &anEntry) |
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{ |
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anEntry.iName = KIpsecName_DES_CBC; |
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anEntry.iAlgType = EAlgorithmClass_Cipher; |
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anEntry.iMinBits = 64; |
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anEntry.iMaxBits = 64; |
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anEntry.iBlock = DES_CBLOCK_SIZE; |
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anEntry.iVector = 8; |
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110 |
} |
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111 |
|
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static void FillinInfo3Descbc(TAlgorithmDesc &anEntry) |
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113 |
{ |
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anEntry.iName = KIpsecName_3DES_CBC; |
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anEntry.iAlgType = EAlgorithmClass_Cipher; |
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anEntry.iMinBits = 3*64; |
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anEntry.iMaxBits = 3*64; |
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anEntry.iBlock = DES_CBLOCK_SIZE; |
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anEntry.iVector = 8; |
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} |
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121 |
|
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122 |
|
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static void FillinInfoAescbc(TAlgorithmDesc &anEntry) |
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124 |
{ |
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anEntry.iName = KIpsecName_AES_CBC; |
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anEntry.iAlgType = EAlgorithmClass_Cipher; |
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anEntry.iMinBits = 128; |
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anEntry.iMaxBits = 256; |
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anEntry.iBlock = AES_CBLOCK_SIZE; |
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anEntry.iVector = 16; |
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} |
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132 |
|
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static void FillinInfoAesctr(TAlgorithmDesc &anEntry) |
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134 |
{ |
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anEntry.iName = KIpsecName_AES_CTR; |
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anEntry.iAlgType = EAlgorithmClass_Cipher; |
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anEntry.iMinBits = 128; |
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anEntry.iMaxBits = 256; |
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anEntry.iBlock = AES_CBLOCK_SIZE; |
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anEntry.iVector = 16; // NOTE : Value set to 16 to be compliant to the current crypto implementation |
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// which expects the IVSize to be 16. Will have to be updated (to 8) once the fix is |
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// completed at the crypto layer |
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143 |
} |
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#ifdef SYMBIAN_IPSEC_VOIP_SUPPORT |
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static void FillinInfoAesXcbcMac96(TAlgorithmDesc &anEntry) |
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146 |
{ |
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anEntry.iName = KIpsecName_AES_XCBC_MAC; |
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anEntry.iAlgType = EAlgorithmClass_Mac; |
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anEntry.iMinBits = 96; |
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anEntry.iMaxBits = 128; |
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anEntry.iBlock = AES_CBLOCK_SIZE; |
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anEntry.iVector = 16; |
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} |
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#endif |
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155 |
|
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void CMessageDigestSymbian::FillinInfoSha1(TAlgorithmDesc &anEntry) |
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157 |
{ |
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anEntry.iName = KIpsecName_SHA1; |
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anEntry.iAlgType = EAlgorithmClass_Digest; |
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anEntry.iMinBits = SHA_DIGEST_LENGTH * 8; |
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anEntry.iMaxBits = SHA_DIGEST_LENGTH * 8; |
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anEntry.iBlock = SHA_CBLOCK; |
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anEntry.iVector = SHA_DIGEST_LENGTH; |
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} |
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165 |
|
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void CMessageDigestSymbian::FillinInfoMd5(TAlgorithmDesc &anEntry) |
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167 |
{ |
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anEntry.iName = KIpsecName_MD5; |
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anEntry.iAlgType = EAlgorithmClass_Digest; |
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anEntry.iMinBits = MD5_DIGEST_LENGTH * 8; |
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anEntry.iMaxBits = MD5_DIGEST_LENGTH * 8; |
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anEntry.iBlock = MD5_CBLOCK; |
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anEntry.iVector = MD5_DIGEST_LENGTH; |
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} |
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175 |
|
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176 |
|
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TUint CProtocolEay::AlgorithmList(TAlgorithmDesc *&aList) |
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{ |
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aList = new TAlgorithmDesc[EAlgorithm_Max]; |
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if (aList == NULL) |
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181 |
{ |
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return EAlgorithm_Max; |
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183 |
} |
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184 |
|
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CMessageDigestSymbian::FillinInfoSha1(aList[EAlgorithm_Sha1]); |
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CMessageDigestSymbian::FillinInfoMd5(aList[EAlgorithm_Md5]); |
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FillinInfoDescbc(aList[EAlgorithm_Descbc]); |
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FillinInfo3Descbc(aList[EAlgorithm_3Descbc]); |
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FillinInfoAescbc(aList[EAlgorithm_Aescbc]); |
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FillinInfoAesctr(aList[EAlgorithm_Aesctr]); |
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191 |
#ifdef SYMBIAN_IPSEC_VOIP_SUPPORT |
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FillinInfoAesXcbcMac96(aList[EAlgorithm_AesXcbcMac96]); |
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#endif |
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return EAlgorithm_Max; |
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195 |
} |
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196 |
|
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197 |
// |
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// Instantiate a Cipher algorithm |
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199 |
// |
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CryptoSpi::CSymmetricCipher* CProtocolEay::SymmetricCipherL(TUint aAlg, const TDesC8 &aKey) |
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201 |
{ |
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CryptoSpi::CSymmetricCipher *enc = NULL; |
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TUid operModeUid = CryptoSpi::KOperationModeCBCUid; |
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TUid algUid = CryptoSpi::KAesUid; |
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TUid cryptoModeUid = CryptoSpi::KCryptoModeEncryptUid; |
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TUid paddingModeUid = CryptoSpi::KPaddingModeNoneUid; |
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switch(aAlg) |
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{ |
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case EAlgorithm_Descbc: |
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algUid = CryptoSpi::KDesUid; |
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211 |
break; |
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|
212 |
case EAlgorithm_3Descbc: |
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213 |
algUid = CryptoSpi::K3DesUid; |
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214 |
break; |
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|
215 |
case EAlgorithm_Aescbc: |
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216 |
algUid = CryptoSpi::KAesUid; |
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217 |
break; |
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|
218 |
case EAlgorithm_Aesctr: |
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219 |
algUid = CryptoSpi::KAesUid; |
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220 |
operModeUid = CryptoSpi::KOperationModeCTRUid;; |
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221 |
break; |
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222 |
default: |
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|
223 |
User::Leave(EIpsec_UnknownCipherNumber); |
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224 |
} |
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225 |
// Initialize the Encryptor |
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226 |
CryptoSpi::TKeyProperty keyProperty = {algUid, KNullUid, CryptoSpi::KSymmetricKeyUid, CryptoSpi::KNonEmbeddedKeyUid}; |
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227 |
CryptoSpi::CCryptoParams* keyParam =CryptoSpi::CCryptoParams::NewLC(); |
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228 |
keyParam->AddL(aKey, CryptoSpi::KSymmetricKeyParameterUid); |
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229 |
CryptoSpi::CKey *key=CryptoSpi::CKey::NewLC(keyProperty, *keyParam); |
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230 |
TRAPD(res, CryptoSpi::CSymmetricCipherFactory::CreateSymmetricCipherL |
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|
231 |
( |
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232 |
enc, |
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233 |
algUid, |
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234 |
*key, |
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235 |
cryptoModeUid, |
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236 |
operModeUid, |
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237 |
paddingModeUid, |
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238 |
NULL)); |
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|
239 |
CleanupStack::PopAndDestroy(key); |
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240 |
CleanupStack::PopAndDestroy(keyParam); |
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|
241 |
if (res != KErrNone) |
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|
242 |
{ |
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|
243 |
// SetKey takes place implicit to the CreateSymmetricCipherL() factory call. If there is any issue with the key |
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244 |
// we would get KErrNotSupported which we need to map to EIpsec_BadCipherKey |
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245 |
if (res == KErrNotSupported) |
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246 |
{ |
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247 |
User::Leave(EIpsec_BadCipherKey); |
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248 |
} |
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249 |
User::Leave(res); |
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250 |
} |
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251 |
return enc; |
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252 |
} |
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|
253 |
|
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254 |
// |
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255 |
// CProtocolEay::MessageDigest |
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256 |
// Instantiate a Message Digest algorithm |
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257 |
// |
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258 |
CMessageDigestCrypto* CProtocolEay::MessageDigest(TUint aAlg) |
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259 |
{ |
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260 |
CMessageDigest *digest = NULL; |
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|
261 |
// Instead of CSHA1 and CMD5, we should have TSHA1 and TMD5 |
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262 |
// to be used as member classes, and the TRAP below would |
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|
263 |
// not be needed -- or at least, should have non-leaving |
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Revision: 201004
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|
264 |
// New available! |
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Revision: 201004
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|
265 |
TRAP_IGNORE( |
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|
266 |
switch (aAlg) |
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|
267 |
{ |
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|
268 |
case EAlgorithm_Sha1: |
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|
269 |
digest = CSHA1::NewL(); |
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Revision: 201004
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|
270 |
break; |
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Revision: 201004
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diff
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|
271 |
case EAlgorithm_Md5: |
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|
272 |
digest = CMD5::NewL(); |
af10295192d8
Revision: 201004
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diff
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|
273 |
break; |
af10295192d8
Revision: 201004
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diff
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|
274 |
default: |
af10295192d8
Revision: 201004
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|
275 |
break; |
af10295192d8
Revision: 201004
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diff
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|
276 |
} |
af10295192d8
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|
277 |
); |
af10295192d8
Revision: 201004
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|
278 |
if (digest == NULL) |
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Revision: 201004
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|
279 |
return NULL; // No Engine available: out of memory or bad call. |
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Revision: 201004
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parents:
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|
280 |
CMessageDigestSymbian *wrapper = new CMessageDigestSymbian(digest); |
af10295192d8
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|
281 |
if (wrapper == NULL) |
af10295192d8
Revision: 201004
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|
282 |
delete digest; // Out of memory |
af10295192d8
Revision: 201004
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diff
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|
283 |
return wrapper; |
af10295192d8
Revision: 201004
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parents:
diff
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|
284 |
} |
af10295192d8
Revision: 201004
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parents:
diff
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|
285 |
|
af10295192d8
Revision: 201004
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diff
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|
286 |
#ifdef SYMBIAN_IPSEC_VOIP_SUPPORT |
af10295192d8
Revision: 201004
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|
287 |
CMac* CProtocolEay::GetMacImplementationL(const TDesC8& aKey) |
af10295192d8
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|
288 |
{ |
af10295192d8
Revision: 201004
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|
289 |
//create rule based selector for filtering the desired MAC interface plug-ins. |
af10295192d8
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|
290 |
CSelectionRules* rules = CSelectionRules::NewL(); |
af10295192d8
Revision: 201004
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|
291 |
CleanupStack::PushL(rules); |
af10295192d8
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|
292 |
CSelectionRuleContent* rule = NULL; |
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|
293 |
const long i=0; |
af10295192d8
Revision: 201004
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|
294 |
CCryptoParam* ruleValueParam = CCryptoIntParam::NewL(0, KMacModeTypeUid); |
af10295192d8
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diff
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|
295 |
|
af10295192d8
Revision: 201004
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|
296 |
TUid id={KAlgorithmCipherAesXcbcMac96}; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff
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|
297 |
rule = CSelectionRuleContent::NewL(KMacInterfaceUid,id, ruleValueParam,EOpEqual,ETrue); |
af10295192d8
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|
298 |
rules->AddSelectionRuleL(rule); |
af10295192d8
Revision: 201004
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parents:
diff
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|
299 |
CRuleSelector* ruleSelector = CRuleSelector::NewL(rules); |
af10295192d8
Revision: 201004
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parents:
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|
300 |
CleanupStack::Pop(rules); |
af10295192d8
Revision: 201004
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parents:
diff
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|
301 |
CleanupStack::PushL(ruleSelector); |
af10295192d8
Revision: 201004
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parents:
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|
302 |
CCryptoSpiStateApi::SetSelector(ruleSelector); |
af10295192d8
Revision: 201004
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parents:
diff
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|
303 |
// Create & Set the key |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
304 |
TKeyProperty keyProperty = {KAesUid, KNullUid, KSymmetricKey,KNonEmbeddedKeyUid}; |
af10295192d8
Revision: 201004
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parents:
diff
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|
305 |
CCryptoParams* keyParam =CCryptoParams::NewLC(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
306 |
keyParam->AddL(aKey, KSymmetricKeyParameterUid); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
307 |
CKey* uniKey=CKey::NewLC(keyProperty, *keyParam); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
308 |
//Retrieve a Synchronous MAC Factory Object and use AES-XCBC-MAC-96 or any other MACalgorithm. |
af10295192d8
Revision: 201004
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parents:
diff
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|
309 |
CMac* macImpl =NULL; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
310 |
TRAPD(err,CMacFactory::CreateMacL(macImpl, KAesXcbcMac96Uid,*uniKey, NULL)); |
af10295192d8
Revision: 201004
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parents:
diff
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|
311 |
//cleanup uniKey and keyParam. |
af10295192d8
Revision: 201004
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parents:
diff
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|
312 |
CleanupStack::PopAndDestroy(2,keyParam); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
313 |
CCryptoSpiStateApi::UnsetSelector(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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CleanupStack::PopAndDestroy(ruleSelector); |
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return macImpl; |
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} |
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|
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HBufC8* CProtocolEay::RetrieveMacValueL(CMac *aMac, const TDesC8& aSourceData ) |
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{ |
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|
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//Retrieve the 8bit mac value |
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HBufC8* macValue = HBufC8::NewLC(16); |
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TPtr8 macPtr = macValue->Des(); |
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//Copy the mac content into the heap based descriptor |
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macPtr.Copy(aMac->MacL(aSourceData)); |
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CleanupStack::PopAndDestroy(macValue); |
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return macValue; |
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} |
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#endif // SYMBIAN_IPSEC_VOIP_SUPPORT |