|
sl@0
|
1 |
/*
|
|
sl@0
|
2 |
* Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
|
|
sl@0
|
3 |
* All rights reserved.
|
|
sl@0
|
4 |
* This component and the accompanying materials are made available
|
|
sl@0
|
5 |
* under the terms of the License "Eclipse Public License v1.0"
|
|
sl@0
|
6 |
* which accompanies this distribution, and is available
|
|
sl@0
|
7 |
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
|
|
sl@0
|
8 |
*
|
|
sl@0
|
9 |
* Initial Contributors:
|
|
sl@0
|
10 |
* Nokia Corporation - initial contribution.
|
|
sl@0
|
11 |
*
|
|
sl@0
|
12 |
* Contributors:
|
|
sl@0
|
13 |
*
|
|
sl@0
|
14 |
* Description:
|
|
sl@0
|
15 |
* streamcipher.cpp
|
|
sl@0
|
16 |
*
|
|
sl@0
|
17 |
*/
|
|
sl@0
|
18 |
|
|
sl@0
|
19 |
|
|
sl@0
|
20 |
#include "streamcipher.h"
|
|
sl@0
|
21 |
#include <cryptopanic.h>
|
|
sl@0
|
22 |
|
|
sl@0
|
23 |
EXPORT_C void CStreamCipher::ProcessFinalL(const TDesC8& aInput, TDes8& aOutput)
|
|
sl@0
|
24 |
{
|
|
sl@0
|
25 |
Process(aInput, aOutput);
|
|
sl@0
|
26 |
}
|
|
sl@0
|
27 |
|
|
sl@0
|
28 |
EXPORT_C void CStreamCipher::Process(const TDesC8& aInput, TDes8& aOutput)
|
|
sl@0
|
29 |
{
|
|
sl@0
|
30 |
TInt outputIndex = aOutput.Size();
|
|
sl@0
|
31 |
|
|
sl@0
|
32 |
// aOutput may already have outputIndex bytes of data in it
|
|
sl@0
|
33 |
// check there will still be enough space to process the result
|
|
sl@0
|
34 |
__ASSERT_DEBUG(aOutput.MaxLength() - outputIndex >= MaxOutputLength(aInput.Length()), User::Panic(KCryptoPanic, ECryptoPanicOutputDescriptorOverflow));
|
|
sl@0
|
35 |
|
|
sl@0
|
36 |
aOutput.Append(aInput);
|
|
sl@0
|
37 |
|
|
sl@0
|
38 |
TPtr8 transformBuf((TUint8*)(aOutput.Ptr()) + outputIndex, aInput.Size(),
|
|
sl@0
|
39 |
aInput.Size());
|
|
sl@0
|
40 |
DoProcess(transformBuf);
|
|
sl@0
|
41 |
}
|
|
sl@0
|
42 |
|
|
sl@0
|
43 |
EXPORT_C TInt CStreamCipher::BlockSize() const
|
|
sl@0
|
44 |
{
|
|
sl@0
|
45 |
return (1);
|
|
sl@0
|
46 |
}
|
|
sl@0
|
47 |
|
|
sl@0
|
48 |
EXPORT_C TInt CStreamCipher::MaxOutputLength(TInt aInputLength) const
|
|
sl@0
|
49 |
{
|
|
sl@0
|
50 |
return aInputLength;
|
|
sl@0
|
51 |
}
|
|
sl@0
|
52 |
|
|
sl@0
|
53 |
EXPORT_C TInt CStreamCipher::MaxFinalOutputLength(TInt aInputLength) const
|
|
sl@0
|
54 |
{
|
|
sl@0
|
55 |
return aInputLength;
|
|
sl@0
|
56 |
}
|
|
sl@0
|
57 |
|