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Bouncy Castle Cryptography 1.11 API Specification: Class RijndaelEngine
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Bouncy Castle Cryptography 1.11
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org.bouncycastle.crypto.engines
Class RijndaelEngine

java.lang.Object
  |
  +--org.bouncycastle.crypto.engines.RijndaelEngine
All Implemented Interfaces:
BlockCipher
public class RijndaelEngine
extends java.lang.Object
implements BlockCipher

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.

Constructor Summary
RijndaelEngine()
          default constructor - 128 bit block size.
RijndaelEngine(int blockBits)
          basic constructor - set the cipher up for a given blocksize
 
Method Summary
 java.lang.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.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

RijndaelEngine

public RijndaelEngine()
default constructor - 128 bit block size.

RijndaelEngine

public RijndaelEngine(int blockBits)
basic constructor - set the cipher up for a given blocksize
Parameters:
blocksize - the blocksize in bits, must be 128, 192, or 256.
Method Detail

init

public void init(boolean forEncryption,
                 CipherParameters params)
initialise a Rijndael cipher.
Specified by:
init in interface BlockCipher
Parameters:
forEncryption - whether or not we are for encryption.
params - the parameters required to set up the cipher.
Throws:
java.lang.IllegalArgumentException - if the params argument is inappropriate.

getAlgorithmName

public java.lang.String getAlgorithmName()
Description copied from interface: BlockCipher
Return the name of the algorithm the cipher implements.
Specified by:
getAlgorithmName in interface BlockCipher
Following copied from interface: org.bouncycastle.crypto.BlockCipher
Returns:
the name of the algorithm the cipher implements.

getBlockSize

public int getBlockSize()
Description copied from interface: BlockCipher
Return the block size for this cipher (in bytes).
Specified by:
getBlockSize in interface BlockCipher
Following copied from interface: org.bouncycastle.crypto.BlockCipher
Returns:
the block size for this cipher in bytes.

processBlock

public int processBlock(byte[] in,
                        int inOff,
                        byte[] out,
                        int outOff)
Description copied from interface: BlockCipher
Process one block of input from the array in and write it to the out array.
Specified by:
processBlock in interface BlockCipher
Following copied from interface: org.bouncycastle.crypto.BlockCipher
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 - if there isn't enough data in in, or space in out.
java.lang.IllegalStateException - if the cipher isn't initialised.

reset

public void reset()
Description copied from interface: BlockCipher
Reset the cipher. After resetting the cipher is in the same state as it was after the last init (if there was one).
Specified by:
reset in interface BlockCipher
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