Top Description Fields Constructors Methods

org.bouncycastle.crypto.fips

pack-priv Class DesBase

Class Inheritance

extends Object

java.lang.Object
org.bouncycastle.crypto.fips.DesBase

Known Direct Subclasses

org.bouncycastle.crypto.fips.DesEdeEngine

a class that provides a basic DES engine.

Field Summary

Modifier and Type	Field and Description
private static final int[]	bigbyte
protected static final int	BLOCK_SIZE
private static final short[]	bytebit what follows is mainly taken from "Applied Cryptography", by Bruce Schneier, however it also bears great resemblance to Richard Outerbridge's D3DES...
private static final byte[]	pc1
private static final byte[]	pc2
private static final int[]	SP1
private static final int[]	SP2
private static final int[]	SP3
private static final int[]	SP4
private static final int[]	SP5
private static final int[]	SP6
private static final int[]	SP7
private static final int[]	SP8
private static final byte[]	totrot

Constructor Summary

Access	Constructor and Description
public	DesBase() standard constructor.

Method Summary

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

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

bigbyte	back to summary
private static final int[] bigbyte

BLOCK_SIZE	back to summary
protected static final int BLOCK_SIZE

bytebit	back to summary
private static final short[] bytebit what follows is mainly taken from "Applied Cryptography", by Bruce Schneier, however it also bears great resemblance to Richard Outerbridge's D3DES...

pc1	back to summary
private static final byte[] pc1

pc2	back to summary
private static final byte[] pc2

SP1	back to summary
private static final int[] SP1

SP2	back to summary
private static final int[] SP2

SP3	back to summary
private static final int[] SP3

SP4	back to summary
private static final int[] SP4

SP5	back to summary
private static final int[] SP5

SP6	back to summary
private static final int[] SP6

SP7	back to summary
private static final int[] SP7

SP8	back to summary
private static final int[] SP8

totrot	back to summary
private static final byte[] totrot

Constructor Detail

DesBase	back to summary
public DesBase() standard constructor.

Method Detail

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

generateWorkingKey	back to summary
protected int[] generateWorkingKey(boolean encrypting, byte[] key) 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 & Phil Karn. (whoever, and wherever they are!).