public class

RijndaelEngine

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

Class Overview

an implementation of Rijndael, based on the documentation and reference implementation by Paulo Barreto, Vincent Rijmen, for v2.0 August '99.

Note: this implementation is based on information prior to final NIST publication.

Summary

Public Constructors
RijndaelEngine()
default constructor - 128 bit block size.
RijndaelEngine(int blockBits)
basic constructor - set the cipher up for a given blocksize
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 a Rijndael 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

Public Constructors

public RijndaelEngine ()

default constructor - 128 bit block size.

public RijndaelEngine (int blockBits)

basic constructor - set the cipher up for a given blocksize

Parameters
blockBits the blocksize in bits, must be 128, 192, or 256.

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 a Rijndael cipher.

Parameters
forEncryption whether or not we are for encryption.
params the parameters required to set up the cipher.
Throws
IllegalArgumentException if the params argument is inappropriate.

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.

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).