org.bouncycastle.crypto.engines
Class RijndaelEngine
java.lang.Object
org.bouncycastle.crypto.engines.RijndaelEngine
- BlockCipher
public class RijndaelEngine
extends java.lang.Object
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.
RijndaelEngine() - default constructor - 128 bit block size.
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RijndaelEngine(int blockBits) - basic constructor - set the cipher up for a given blocksize
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String | getAlgorithmName() - Return the name of the algorithm the cipher implements.
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int | getBlockSize() - Return the block size for this cipher (in bytes).
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void | init(boolean forEncryption, CipherParameters params) - initialise a Rijndael cipher.
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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.
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void | reset() - Reset the cipher.
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RijndaelEngine
public RijndaelEngine()
default constructor - 128 bit block size.
RijndaelEngine
public RijndaelEngine(int blockBits)
basic constructor - set the cipher up for a given blocksize
blockBits
- the blocksize in bits, must be 128, 192, or 256.
getAlgorithmName
public String getAlgorithmName()
Return the name of the algorithm the cipher implements.
- getAlgorithmName in interface BlockCipher
- the name of the algorithm the cipher implements.
getBlockSize
public int getBlockSize()
Return the block size for this cipher (in bytes).
- getBlockSize in interface BlockCipher
- the block size for this cipher in bytes.
init
public void init(boolean forEncryption,
CipherParameters params)
initialise a Rijndael cipher.
- init in interface BlockCipher
forEncryption
- whether or not we are for encryption.params
- the parameters required to set up the cipher.
processBlock
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.
- processBlock in interface BlockCipher
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.
- the number of bytes processed and produced.
reset
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).
- reset in interface BlockCipher