Package com.trilead.ssh2.crypto.cipher

Class DES

java.lang.Object
com.trilead.ssh2.crypto.cipher.DES
All Implemented Interfaces:
BlockCipher
Direct Known Subclasses:
DESede
public class DES extends Object implements BlockCipher
DES.

  • Constructor Summary

    Constructors
    Constructor
    Description
    DES()
    standard constructor.

  • Method Summary

    Modifier and Type
    Method
    Description
    protected void
    desFunc(int[] wKey, byte[] in, int inOff, byte[] out, int outOff)
    the DES engine.
    protected int[]
    generateWorkingKey(boolean encrypting, byte[] key, int off)
    generate an integer based working key based on our secret key and what we processing we are planning to do.
    String
    getAlgorithmName()
     
    int
    getBlockSize()
     
    void
    init(boolean encrypting, byte[] key)
    initialise a DES cipher.
    void
    reset()
     
    void
    transformBlock(byte[] in, int inOff, byte[] out, int outOff)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • DES

      public DES()
      standard constructor.

  • Method Details

    • init

      public void init(boolean encrypting, byte[] key)
      initialise a DES cipher.
      Specified by:
      init in interface BlockCipher
      Parameters:
      encrypting - whether or not we are for encryption.
      key - the parameters required to set up the cipher.
      Throws:
      IllegalArgumentException - if the params argument is inappropriate.

    • getAlgorithmName

      public String getAlgorithmName()

    • getBlockSize

      public int getBlockSize()
      Specified by:
      getBlockSize in interface BlockCipher

    • transformBlock

      public void transformBlock(byte[] in, int inOff, byte[] out, int outOff)
      Specified by:
      transformBlock in interface BlockCipher

    • reset

      public void reset()

    • generateWorkingKey

      protected int[] generateWorkingKey(boolean encrypting, byte[] key, int off)
      generate an integer based working key based on our secret key and what we processing we are planning to do. Acknowledgements for this routine go to James Gillogly invalid input: '&' Phil Karn. (whoever, and wherever they are!).

    • desFunc

      protected void desFunc(int[] wKey, byte[] in, int inOff, byte[] out, int outOff)
      the DES engine.