crypto/weakcryptospi/source/random/random.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 01 Apr 2010 00:24:41 +0300
branchRCL_3
changeset 44 d07aa956024a
parent 41 9b5a3a9fddf8
child 45 030c4fbc13d7
permissions -rw-r--r--
Revision: 201013 Kit: 201013
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
19
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
     1
/*
44
d07aa956024a Revision: 201013
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 41
diff changeset
     2
* Copyright (c) 2005-2010 Nokia Corporation and/or its subsidiary(-ies).
19
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
     3
* All rights reserved.
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
     4
* This component and the accompanying materials are made available
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
     5
* under the terms of the License "Eclipse Public License v1.0"
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
     6
* which accompanies this distribution, and is available
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
     7
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
     8
*
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
     9
* Initial Contributors:
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    10
* Nokia Corporation - initial contribution.
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    11
*
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    12
* Contributors:
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    13
*
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    14
* Description: 
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    15
*
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    16
*/
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    17
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    18
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    19
/**
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    20
 @file
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    21
*/
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    22
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    23
#include <e32std.h>
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    24
#include <e32math.h>
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    25
#include <random.h>
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    26
#include <hash.h>
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    27
#include "randomshim.h"
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    28
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    29
extern "C" {
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    30
EXPORT_C void RAND_bytes(unsigned char* buf,int bytes)
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    31
	{
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    32
	TPtr8 ptr(buf,bytes,bytes);
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    33
	buf[0]++;
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    34
	TRandom::Random(ptr);
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    35
	}
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    36
}
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    37
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    38
EXPORT_C CRandom::CRandom(void)
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    39
	{
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    40
	}
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    41
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    42
EXPORT_C CSystemRandom* CSystemRandom::NewL(void)
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    43
	{
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    44
	CSystemRandom* self = NewLC();
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    45
	CleanupStack::Pop(self);
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    46
	return self;
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    47
	}
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    48
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    49
EXPORT_C CSystemRandom* CSystemRandom::NewLC(void)
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    50
	{
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    51
	CSystemRandom* self = new(ELeave)CSystemRandom();
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    52
	CleanupStack::PushL(self);
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    53
	self->ConstructL();
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    54
	return self;
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    55
	}
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    56
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    57
void CSystemRandom::GenerateBytesL(TDes8& aDest)
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    58
	{
44
d07aa956024a Revision: 201013
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 41
diff changeset
    59
	TRAPD(error, iShim->GenerateBytesL(aDest));
d07aa956024a Revision: 201013
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 41
diff changeset
    60
    // This method must leave on low memory conditions.
d07aa956024a Revision: 201013
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 41
diff changeset
    61
    if(error == KErrNoMemory)
d07aa956024a Revision: 201013
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 41
diff changeset
    62
        {
d07aa956024a Revision: 201013
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 41
diff changeset
    63
        User::Leave(error); 
d07aa956024a Revision: 201013
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 41
diff changeset
    64
        }
d07aa956024a Revision: 201013
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 41
diff changeset
    65
    }
19
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    66
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    67
CSystemRandom::CSystemRandom(void)
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    68
	{
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    69
	}
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    70
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    71
CSystemRandom::~CSystemRandom()
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    72
	{
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    73
	delete iShim;
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    74
	}
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    75
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    76
void CSystemRandom::ConstructL()
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    77
	{
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    78
	iShim = CRandomShim::NewL();
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    79
	}
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    80
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    81
// Methods replace by shim are excluded from coverage.
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    82
#ifdef _BullseyeCoverage
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    83
#pragma suppress_warnings on
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    84
#pragma BullseyeCoverage off
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    85
#pragma suppress_warnings off
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    86
#endif
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    87
EXPORT_C void TRandom::Random(TDes8& aDestination)
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    88
	{
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    89
	// Method replaced by shim
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    90
	TRandomShim::Random(aDestination);
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    91
	}
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    92
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    93
EXPORT_C void TRandom::RandomL(TDes8& aDestination)
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    94
	{
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    95
	// Method replaced by shim
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    96
	TRandomShim::RandomL(aDestination);
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
    97
	}
41
9b5a3a9fddf8 Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 19
diff changeset
    98
	
9b5a3a9fddf8 Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 19
diff changeset
    99
EXPORT_C void TRandom::SecureRandomL(TDes8& aDestination)
9b5a3a9fddf8 Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 19
diff changeset
   100
	{
9b5a3a9fddf8 Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 19
diff changeset
   101
	// Method replaced by shim
9b5a3a9fddf8 Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 19
diff changeset
   102
	TRandomShim::SecureRandomL(aDestination);
9b5a3a9fddf8 Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 19
diff changeset
   103
	}
19
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   104
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   105
EXPORT_C RRandomSession::RRandomSession(void)
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   106
	{
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   107
	}
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   108
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   109
EXPORT_C void RRandomSession::ConnectL(void)
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   110
	{
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   111
	// All of the ConnectL() code has moved to randomimpl.cpp
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   112
	// in the new CryptoSPI pluggable framework. This is just
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   113
	// a stub now that is retained for binary compatibility.
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   114
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   115
	// Method replaced by shim
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   116
	ASSERT(EFalse);
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   117
	}
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   118
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   119
EXPORT_C TInt RRandomSession::GetRandom(TDes8& aDestination)
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   120
	{
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   121
	// Method replaced by shim
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   122
	TRandomShim::Random(aDestination);
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   123
	return KErrNone;
cd501b96611d Revision: 200945
Mikko Sunikka <mikko.sunikka@nokia.com>
parents:
diff changeset
   124
	}