| author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
| Wed, 15 Sep 2010 12:38:06 +0300 | |
| branch | RCL_3 |
| changeset 55 | f72c4fccd381 |
| parent 0 | 1bce908db942 |
| permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006 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: Mcc crypto context. |
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* |
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*/ |
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// System includes |
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#include <e32base.h> |
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#include <mmccsrtpmasterkey.h> |
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#include <mmccsrtpmastersalt.h> |
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#include <mmccsrtpcryptoparams.h> |
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#include "mmcccryptocontext.h" |
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#include "mcccontrollerlogs.h" |
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// ======== MEMBER FUNCTIONS ======== |
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// --------------------------------------------------------------------------- |
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// TMccCryptoContext::ValidateContext |
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// |
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// --------------------------------------------------------------------------- |
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// |
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TInt TMccCryptoContext::ValidateContext() const |
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{
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// Checks Master key validity |
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if ( iSrtpMasterKey.iMasterKey.Length() != KMccSRTPDefaultMasterKeyLength/8 ) |
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{
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__CONTROLLER( "TMccCryptoContext::ValidateContext - Master Key Length Invalid" ) |
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return KErrArgument; |
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} |
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if ( iSrtpMasterKey.iEncKeyBitLength != KMccSRTPDefSessionEncryptionKeyLength ) |
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{
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__CONTROLLER( "TMccCryptoContext::ValidateContext - Encryption Key Length Invalid" ) |
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return KErrArgument; |
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} |
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if ( iSrtpMasterKey.iAuthKeyBitLength != KMccSRTPDefSessionAuthenticationKeyLength ) |
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{
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__CONTROLLER( "TMccCryptoContext::ValidateContext - Authentication Key Length Invalid" ) |
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return KErrArgument; |
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} |
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// Checks master salt validity |
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if ( iSrtpMasterSalt.iMasterSalt.Length() != KMccSRTPDefaultMasterSaltLength/8 ) |
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{
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__CONTROLLER( "TMccCryptoContext::ValidateContext - Master Salt Length Invalid" ) |
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return KErrArgument; |
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} |
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if ( iSrtpMasterSalt.iSaltKeyLength != KMccSRTPDefSessionSaltingKeyLength ) |
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{
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__CONTROLLER( "TMccCryptoContext::ValidateContext - Salt Key Length Invalid" ) |
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return KErrArgument; |
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} |
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// Checks crypto params validity |
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if ( ( iSrtpCryptoParams.iSrtpEncAlg != ESrtpEncAES_CM && |
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iSrtpCryptoParams.iSrtpEncAlg != ESrtpNullAlg ) && |
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( iSrtpCryptoParams.iSrtcpEncAlg != ESrtpEncAES_CM && |
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iSrtpCryptoParams.iSrtcpEncAlg != ESrtpNullAlg ) ) |
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{
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__CONTROLLER( "TMccCryptoContext::ValidateContext - Crypto Params Enc Invalid" ) |
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return KErrArgument; |
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} |
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if ( ( iSrtpCryptoParams.iSrtpAuthAlg != ESrtpAuthHMAC_SHA1 && |
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iSrtpCryptoParams.iSrtpAuthAlg != ESrtpAuthNull && |
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iSrtpCryptoParams.iSrtpAuthAlg != ESrtpAuthRCCm1 && |
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iSrtpCryptoParams.iSrtpAuthAlg != ESrtpAuthRCCm2 && |
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iSrtpCryptoParams.iSrtpAuthAlg != ESrtpAuthRCCm3 ) || |
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( iSrtpCryptoParams.iSrtcpAuthAlg != ESrtpAuthHMAC_SHA1 && |
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iSrtpCryptoParams.iSrtcpAuthAlg != ESrtpAuthNull ) ) |
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{
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__CONTROLLER( "TMccCryptoContext::ValidateContext - Crypto Params AuthAlg Invalid" ) |
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return KErrArgument; |
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} |
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if ( iSrtpCryptoParams.iSrtpAuthAlg == ESrtpAuthHMAC_SHA1 && |
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( iSrtpCryptoParams.iSrtpAuthTagLen != KMccSRTPAuthTagLength80 && |
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iSrtpCryptoParams.iSrtpAuthTagLen != KMccSRTPAuthTagLength32 ) ) |
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98 |
{
|
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99 |
__CONTROLLER( "TMccCryptoContext::ValidateContext - Crypto Params SRTP AuthTag32 Invalid" ) |
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100 |
return KErrArgument; |
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101 |
} |
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102 |
|
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if ( iSrtpCryptoParams.iSrtcpAuthAlg == ESrtpAuthHMAC_SHA1 && |
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( iSrtpCryptoParams.iSrtcpAuthTagLen != KMccSRTPAuthTagLength80 && |
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iSrtpCryptoParams.iSrtcpAuthTagLen != KMccSRTPAuthTagLength32 ) ) |
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106 |
{
|
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107 |
__CONTROLLER( "TMccCryptoContext::ValidateContext - Crypto Params SRTCP AuthTag32 Invalid" ) |
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108 |
return KErrArgument; |
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109 |
} |
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110 |
|
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if ( ( iSrtpCryptoParams.iSrtpAuthAlg == ESrtpAuthRCCm1 || |
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iSrtpCryptoParams.iSrtpAuthAlg == ESrtpAuthRCCm2 ) && |
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iSrtpCryptoParams.iSrtpAuthTagLen != KMccSRTPAuthTagLength112 ) |
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114 |
{
|
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__CONTROLLER( "TMccCryptoContext::ValidateContext - Crypto Params SRTP AuthTag112 Invalid" ) |
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return KErrArgument; |
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} |
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118 |
|
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if ( iSrtpCryptoParams.iSrtpAuthAlg == ESrtpAuthRCCm3 && |
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iSrtpCryptoParams.iSrtpAuthTagLen != KMccSRTPAuthTagLength32 ) |
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121 |
{
|
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__CONTROLLER( "TMccCryptoContext::ValidateContext - Crypto Params SRTP RCC3 && AuthTag32 Invalid" ) |
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return KErrArgument; |
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} |
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125 |
|
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if ( ( iSrtpCryptoParams.iSrtpAuthAlg == ESrtpAuthNull && |
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iSrtpCryptoParams.iSrtpAuthTagLen != 0 ) && |
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( iSrtpCryptoParams.iSrtpAuthAlg == ESrtpAuthNull && |
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iSrtpCryptoParams.iSrtpAuthTagLen != 0) ) |
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130 |
{
|
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__CONTROLLER( "TMccCryptoContext::ValidateContext - Crypto Params SRTP AuthNull Invalid" ) |
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return KErrArgument; |
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133 |
} |
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134 |
|
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if ( iSrtpCryptoParams.iPrefixLen != KMccSRTPPrefixLength ) |
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136 |
{
|
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__CONTROLLER( "TMccCryptoContext::ValidateContext - Crypto Params Prefix Invalid" ) |
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return KErrArgument; |
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} |
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140 |
|
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if ( !iSrtpCryptoParams.iROCTransRate ) |
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142 |
{
|
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__CONTROLLER( "TMccCryptoContext::ValidateContext - Crypto Params ROCTransRate Invalid" ) |
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return KErrArgument; |
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} |
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146 |
|
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return KErrNone; |
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} |
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149 |
|
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// --------------------------------------------------------------------------- |
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// TMccCryptoContext::UpdateContext |
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// |
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// --------------------------------------------------------------------------- |
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154 |
// |
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155 |
TInt TMccCryptoContext::UpdateContext( TMccCryptoContext& aCandidate ) |
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156 |
{
|
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iSrtpMasterKey = aCandidate.iSrtpMasterKey; |
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iSrtpMasterSalt = aCandidate.iSrtpMasterSalt; |
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159 |
|
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return KErrNone; |
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} |
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162 |
|
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// --------------------------------------------------------------------------- |
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// TMccCryptoContext::GetDestinationInfo |
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165 |
// |
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// --------------------------------------------------------------------------- |
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167 |
// |
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168 |
TInt TMccCryptoContext::GetDestinationInfo( TUint32& aSessionId, TUint32& aLinkId, |
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TUint32& aStreamId, TUint32& aEndPointId ) const |
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170 |
{
|
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if ( !iBindingDone ) |
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{
|
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return KErrNotFound; |
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} |
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175 |
|
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aSessionId = iSessionId; |
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aLinkId = iLinkId; |
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aStreamId = iStreamId; |
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aEndPointId = iEndPointId; |
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return KErrNone; |
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} |
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182 |
|
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// --------------------------------------------------------------------------- |
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// TMccCryptoContext::GetDestinationInfo |
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// |
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// --------------------------------------------------------------------------- |
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// |
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188 |
TInt TMccCryptoContext::SetDestinationInfo( TUint32 aSessionId, TUint32 aLinkId, |
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189 |
TUint32 aStreamId, TUint32 aEndPointId ) |
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190 |
{
|
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iSessionId = aSessionId; |
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iLinkId = aLinkId; |
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iStreamId = aStreamId; |
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iEndPointId = aEndPointId; |
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195 |
|
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iBindingDone = ETrue; |
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return KErrNone; |
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} |
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// --------------------------------------------------------------------------- |
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// TMccCryptoContext::SetMasterKey |
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// |
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// --------------------------------------------------------------------------- |
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// |
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void TMccCryptoContext::SetMasterKey( const TMccSrtpMasterKey& aSrtpMasterKey ) |
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{
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iSrtpMasterKey = aSrtpMasterKey; |
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} |
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// --------------------------------------------------------------------------- |
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// TMccCryptoContext::SetMasterSalt |
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// |
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// --------------------------------------------------------------------------- |
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// |
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void TMccCryptoContext::SetMasterSalt( const TMccSrtpMasterSalt& aSrtpMasterSalt ) |
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{
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iSrtpMasterSalt = aSrtpMasterSalt; |
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} |
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// --------------------------------------------------------------------------- |
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// TMccCryptoContext::SetCryptoParams |
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// |
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// --------------------------------------------------------------------------- |
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// |
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void TMccCryptoContext::SetCryptoParams( const TMccSrtpCryptoParams& aSrtpCryptoParams ) |
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{
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iSrtpCryptoParams = aSrtpCryptoParams; |
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} |
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// --------------------------------------------------------------------------- |
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// TMccCryptoContext::MasterKey |
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// |
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// --------------------------------------------------------------------------- |
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// |
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const TMccSrtpMasterKey& TMccCryptoContext::MasterKey() const |
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{
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return iSrtpMasterKey; |
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} |
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// --------------------------------------------------------------------------- |
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// TMccCryptoContext::MasterSalt |
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// |
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// --------------------------------------------------------------------------- |
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// |
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const TMccSrtpMasterSalt& TMccCryptoContext::MasterSalt() const |
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{
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return iSrtpMasterSalt; |
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} |
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// --------------------------------------------------------------------------- |
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// TMccCryptoContext::CryptoParams |
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// |
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// --------------------------------------------------------------------------- |
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// |
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const TMccSrtpCryptoParams& TMccCryptoContext::CryptoParams() const |
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{
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return iSrtpCryptoParams; |
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} |
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// --------------------------------------------------------------------------- |
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// TMccCryptoContext::ContextId |
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// |
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// --------------------------------------------------------------------------- |
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// |
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TUint32 TMccCryptoContext::ContextId() const |
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{
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return iContextId; |
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} |
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// End of File |