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CModeCBCDecryptor Class Reference

class CModeCBCDecryptor : public CBlockChainingMode

Concrete subclass of CBlockChainingMode implementing CBC mode block chaining for decryption.

Inherits from

Public Member Functions
~CModeCBCDecryptor (void)
IMPORT_C CModeCBCDecryptor * NewL ( CBlockTransformation *, const TDesC8 &)
IMPORT_C CModeCBCDecryptor * NewLC ( CBlockTransformation *, const TDesC8 &)
void Transform ( TDes8 &)
Protected Member Functions
CModeCBCDecryptor ()
void ConstructL ( CBlockTransformation *, const TDesC8 &)
Private Member Functions
const CModeCBCDecryptor & operator= (const CModeCBCDecryptor &)
Inherited Functions
CBase::CBase()
CBase::Delete(CBase *)
CBase::Extension_(TUint,TAny *&,TAny *)
CBase::operator new(TUint)
CBase::operator new(TUint,TAny *)
CBase::operator new(TUint,TLeave)
CBase::operator new(TUint,TLeave,TUint)
CBase::operator new(TUint,TUint)
CBase::~CBase()
CBlockChainingMode::BlockSize()const
CBlockChainingMode::CBlockChainingMode()
CBlockChainingMode::KeySize()const
CBlockChainingMode::Reset()
CBlockChainingMode::SetIV(const TDesC8 &)
CBlockChainingMode::~CBlockChainingMode()
CBlockTransformation::GetExtension(TUint,TAny *&,TAny *)
Private Attributes
TPtr8 iIVBak
HBufC8 * iIVBakBuf
Inherited Attributes
CBlockChainingMode::iBT
CBlockChainingMode::iIV
CBlockChainingMode::iIVBuf
CBlockChainingMode::iRegister
CBlockChainingMode::iRegisterBuf

Constructor & Destructor Documentation

CModeCBCDecryptor()

CModeCBCDecryptor ( ) [protected]

~CModeCBCDecryptor(void)

~CModeCBCDecryptor ( void ) [virtual]

Parameters

void

Member Functions Documentation

ConstructL(CBlockTransformation *, const TDesC8 &)

void ConstructL ( CBlockTransformation * aBT,
const TDesC8 & aIV
) [protected]

Parameters

CBlockTransformation * aBT
const TDesC8 & aIV

NewL(CBlockTransformation *, const TDesC8 &)

IMPORT_C CModeCBCDecryptor * NewL ( CBlockTransformation * aBT,
const TDesC8 & aIV
) [static]

Creates an object of this class for CBC mode decryption.

Parameters

CBlockTransformation * aBT An appropriate CBlockTransformation derived decryptor.
const TDesC8 & aIV Initialization vector, the length of this descriptor must be the same as the underlying cipher's block size.

NewLC(CBlockTransformation *, const TDesC8 &)

IMPORT_C CModeCBCDecryptor * NewLC ( CBlockTransformation * aBT,
const TDesC8 & aIV
) [static]

Creates an object of this class for CBC mode decryption.

The returned pointer is put onto the cleanup stack.

Parameters

CBlockTransformation * aBT An appropriate CBlockTransformation derived decryptor.
const TDesC8 & aIV Initialization vector, the length of this descriptor must be the same as the underlying cipher's block size.

Transform(TDes8 &)

void Transform ( TDes8 & aBlock ) [virtual]

Transforms the supplied block, returning the new value using the same parameter. aBlock.Size() must be the same length as BlockSize() .

Parameters

TDes8 & aBlock On input, the data to be transformed; on return, the data after transformation.

operator=(const CModeCBCDecryptor &)

const CModeCBCDecryptor & operator= ( const CModeCBCDecryptor & ) [private]

Parameters

const CModeCBCDecryptor &

Member Data Documentation

TPtr8 iIVBak

TPtr8 iIVBak [private]

HBufC8 * iIVBakBuf

HBufC8 * iIVBakBuf [private]

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All rights reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License v1.0.