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CAESDecryptor Class Reference

class CAESDecryptor : public CRijndael

Concrete class for AES decryption.

Inherits from

CAESDecryptor
- CRijndael
  - CBlockTransformation
    - CBase

Public Member Functions
TInt	BlockSize()
IMPORT_C CAESDecryptor *	NewL(const TDesC8 &)
IMPORT_C CAESDecryptor *	NewLC(const TDesC8 &)
void	Transform(TDes8 &)

Protected Member Functions
	CAESDecryptor(void)
void	SetKey(const TDesC8 &)

Private Member Functions
	CAESDecryptor(const CAESDecryptor &)
const CAESDecryptor &	operator=(const CAESDecryptor &)

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()
	CBlockTransformation::GetExtension(TUint,TAny &,TAny )
	CRijndael::CRijndael(void)
	CRijndael::ConstructL(const TDesC8 &)
	CRijndael::KeySize(void)const
	CRijndael::Reset(void)
	CRijndael::~CRijndael(void)

Inherited Attributes
	CRijndael::iK
	CRijndael::iKey
	CRijndael::iRounds

Constructor & Destructor Documentation

CAESDecryptor(void)

CAESDecryptor

(

void

)

[protected]

Parameters

void

CAESDecryptor(const CAESDecryptor &)

CAESDecryptor

(

const CAESDecryptor &

)

[private]

Parameters

const CAESDecryptor &

Member Functions Documentation

BlockSize()

TInt

BlockSize

(

)

const [virtual]

Gets the block size in bytes.

NewL(const TDesC8 &)

IMPORT_C CAESDecryptor *

NewL

(

const TDesC8 &

aKey

)

[static]

Creates an instance of this class.

leave: KErrKeyNotWeakEnough If the key size is larger than that allowed by the cipher strength restrictions of the crypto library. See TCrypto::IsSymmetricWeakEnoughL()

Parameters

const TDesC8 & aKey

The key to be used for decryption. The key length must be either KAESKeySize128 (=16), KAESKeySize192 (=24) or KAESKeySize256 (=32) bytes.

NewLC(const TDesC8 &)

IMPORT_C CAESDecryptor *

NewLC

(

const TDesC8 &

aKey

)

[static]

Creates an instance of this class and leaves it on the cleanup stack.

leave: KErrKeyNotWeakEnough If the key size is larger than that allowed by the cipher strength restrictions of the crypto library. See TCrypto::IsSymmetricWeakEnoughL()

Parameters

const TDesC8 & aKey

The key to be used for decryption. The key length must be either KAESKeySize128 (=16), KAESKeySize192 (=24) or KAESKeySize256 (=32) bytes.

SetKey(const TDesC8 &)

void

SetKey

(

const TDesC8 &

aKey

)

[protected, virtual]

Parameters

const TDesC8 & aKey

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 CAESDecryptor &)

const CAESDecryptor &

operator=

(

const CAESDecryptor &

)

[private]

Parameters

const CAESDecryptor &