Symaptic: os/security/cryptoplugins/cryptospiplugins/source/softwarecrypto/randomimpl.cpp@bde4ae8d615e

     1 /*

     2 * Copyright (c) 2005-2009 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 *

    16 */

    19 /**

    20  @file

    21 */

    23 #include <e32std.h>

    24 #include <e32math.h>

    25 #include <e32debug.h>

    27 #include "randomimpl.h"

    28 #include "pluginentry.h"

    29 #include "pluginconfig.h"

    30 #include "securityerr.h"

    32 using namespace SoftwareCrypto;

    34 CRandomImpl* CRandomImpl::NewL(void)

    35 	{

    36 	CRandomImpl* self = new(ELeave)CRandomImpl();

    37 	return self;

    38 	}

    40 CRandomImpl* CRandomImpl::NewLC(void)

    41 	{

    42 	CRandomImpl* self = NewL();

    43 	CleanupStack::PushL(self);

    44 	return self;

    45 	}

    47 void CRandomImpl::GenerateRandomBytesL(TDes8& aDestination)

    48 	{

    49 	// Call the Math library to populate the buffer with random data.

    50 	TRAPD(err, Math::RandomL(aDestination));

    51 	if(err != KErrNone)

    52 	    {

    53 	    // As the end users are interested only in the security aspect of the output but not

    54         // the internal states, accordingly translate the kernel side error code if required.

    55         err = (err == KErrNotReady) ? KErrNotSecure : err;

    56 	    User::Leave(err);

    57 	    }

    58 	}

    60 CRandomImpl::CRandomImpl(void)

    61 	{

    62 	}

    64 void CRandomImpl::GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics)

    65 	{

    66 	TInt randomNum = sizeof(KRandomCharacteristics)/sizeof(TRandomCharacteristics*);

    67 	for (TInt i = 0; i < randomNum; i++)

    68 		{

    69 		if (KRandomCharacteristics[i]->cmn.iImplementationUID == ImplementationUid().iUid)

    70 			{

    71 			aPluginCharacteristics = KRandomCharacteristics[i];

    72 			break;

    73 			}

    74 		}

    75 	}

    77 CExtendedCharacteristics* CRandomImpl::CreateExtendedCharacteristicsL()

    78 	{

    79 	// All Symbian software plug-ins have unlimited concurrency, cannot be reserved

    80 	// for exclusive use and are not CERTIFIED to be standards compliant.

    81 	return CExtendedCharacteristics::NewL(KMaxTInt, EFalse);

    82 	}

    84 const CExtendedCharacteristics* CRandomImpl::GetExtendedCharacteristicsL()

    85 	{

    86 	return CRandomImpl::CreateExtendedCharacteristicsL();

    87 	}

    89 TUid CRandomImpl::ImplementationUid() const

    90 	{

    91 	return KCryptoPluginRandomUid;

    92 	}

    94 CRandomImpl::~CRandomImpl()

    95 	{

    96 	}

    98 void CRandomImpl::Close()

    99 	{

   100 	delete this;

   101 	}

   103 // All crypto plugins must implement this, to reset

   104 // hardware if required. Do nothing in this version

   105 void CRandomImpl::Reset()

   106 	{

   107 	}

   109 // Methods which are not supported can be excluded from the coverage.

   110 #ifdef _BullseyeCoverage

   111 #pragma suppress_warnings on

   112 #pragma BullseyeCoverage off

   113 #pragma suppress_warnings off

   114 #endif

   116 TAny* CRandomImpl::GetExtension(TUid /*aExtensionId*/)

   117 	{

   118 	return NULL;

   119 	}

author	sl@SLION-WIN7.fritz.box
	Fri, 15 Jun 2012 03:10:57 +0200 (2012-06-15)
changeset 0	bde4ae8d615e
permissions	-rw-r--r--