Package org.bouncycastle.crypto.engines

Class RijndaelEngine

java.lang.Object
org.bouncycastle.crypto.engines.RijndaelEngine
All Implemented Interfaces:
BlockCipher
public class RijndaelEngine extends 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 Details

    • 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:
      blockBits - the blocksize in bits, must be 128, 192, or 256.

  • Method Details

    • 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:
      IllegalArgumentException - if the params argument is inappropriate.

    • getAlgorithmName

      public String getAlgorithmName()
      Description copied from interface: BlockCipher
      Return the name of the algorithm the cipher implements.
      Specified by:
      getAlgorithmName in interface 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
      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
      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.

    • 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