public class

NullEngine

extends Object
implements BlockCipher
java.lang.Object
   ↳ org.bouncycastle.crypto.engines.NullEngine

Class Overview

The no-op engine that just copies bytes through, irrespective of whether encrypting and decrypting. Provided for the sake of completeness.

Summary

Constants
int BLOCK_SIZE
Public Constructors
NullEngine()
Standard constructor.
Public Methods
String getAlgorithmName()
Return the name of the algorithm the cipher implements.
int getBlockSize()
Return the block size for this cipher (in bytes).
void init(boolean forEncryption, CipherParameters params)
Initialise the cipher.
int processBlock(byte[] in, int inOff, byte[] out, int outOff)
Process one block of input from the array in and write it to the out array.
void reset()
Reset the cipher.
[Expand]
Inherited Methods
From class java.lang.Object
From interface org.bouncycastle.crypto.BlockCipher

Constants

protected static final int BLOCK_SIZE

Constant Value: 1 (0x00000001)

Public Constructors

public NullEngine ()

Standard constructor.

Public Methods

public String getAlgorithmName ()

Return the name of the algorithm the cipher implements.

Returns
  • the name of the algorithm the cipher implements.

public int getBlockSize ()

Return the block size for this cipher (in bytes).

Returns
  • the block size for this cipher in bytes.

public void init (boolean forEncryption, CipherParameters params)

Initialise the cipher.

Parameters
forEncryption if true the cipher is initialised for encryption, if false for decryption.
params the key and other data required by the cipher.
Throws
IllegalArgumentException

public int processBlock (byte[] in, int inOff, byte[] out, int outOff)

Process one block of input from the array in and write it to the out array.

Parameters
in the array containing the input data.
inOff offset into the in array the data starts at.
out the array the output data will be copied into.
outOff the offset into the out array the output will start at.
Returns
  • the number of bytes processed and produced.
Throws
DataLengthException
IllegalStateException

public void reset ()

Reset the cipher. After resetting the cipher is in the same state as it was after the last init (if there was one).