Package org.bouncycastle.crypto.engines

Class RC564Engine

java.lang.Object
org.bouncycastle.crypto.engines.RC564Engine
All Implemented Interfaces:
BlockCipher
public class RC564Engine extends Object implements BlockCipher
The specification for RC5 came from the RC5 Encryption Algorithm publication in RSA CryptoBytes, Spring of 1995. https://www.rsasecurity.com/rsalabs/cryptobytes.

This implementation is set to work with a 64 bit word size.

  • Constructor Summary

    Constructors
    Constructor
    Description
    RC564Engine()
    Create an instance of the RC5 encryption algorithm and set some defaults

  • Method Summary

    Modifier and Type
    Method
    Description
    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 RC5-64 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 Details

    • RC564Engine

      public RC564Engine()
      Create an instance of the RC5 encryption algorithm and set some defaults

  • Method Details

    • 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.

    • init

      public void init(boolean forEncryption, CipherParameters params)
      initialise a RC5-64 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.

    • 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