This abstract class defines an encryption/decryption algortihm.

Inheritance:

Protected Fields

PBYTEArray	key Key for the encryption/decryption
PINDEX	blockSize Size of each encryption block in bytes
BlockChainMode	chainMode Mode for sequential encryption each block

Protected Methods

	PCypher ( PINDEX blockSize, BlockChainMode chainMode ) Create a new encryption object instance.
virtual void	Initialise ( BOOL encoding ) Initialise the encoding/decoding sequence.
virtual void	EncodeBlock ( const void* in, void* out ) Encode an n bit block of memory according to the encryption algorithm.
virtual void	DecodeBlock ( const void* in, void* out ) Dencode an n bit block of memory according to the encryption algorithm.

Inherited from PObject:

Public Methods

Run Time Type functions

I/O functions

Public Members

Comparison functions

Documentation

This abstract class defines an encryption/decryption algortihm. A specific algorithm is implemented in a descendent class.

PCypher( PINDEX blockSize, BlockChainMode chainMode )

Create a new encryption object instance.

Parameters:

- blockSize Size of encryption blocks (in bits)
- chainMode Block chain mode

virtual void Initialise( BOOL encoding ) = 0

Initialise the encoding/decoding sequence.

Parameters:

- encoding Flag for encoding/decoding sequence about to start.

virtual void EncodeBlock( const void* in, void* out ) = 0

Encode an n bit block of memory according to the encryption algorithm.

Parameters:

in - Pointer to clear n bit block.
out - Pointer to coded n bit block.

virtual void DecodeBlock( const void* in, void* out ) = 0

Dencode an n bit block of memory according to the encryption algorithm.

Parameters:

in - Pointer to coded n bit block.
out - Pointer to clear n bit block.

PBYTEArray key

Key for the encryption/decryption

PINDEX blockSize

Size of each encryption block in bytes

BlockChainMode chainMode

Mode for sequential encryption each block

Direct child classes:

PTEACypher

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