Package org.bouncycastle.crypto.engines

Class 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

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

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      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:
        blockBits - 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
        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