com.fasteasytrade.JRandTest.Algo
Class SkipjackRandom

java.lang.Object
  com.fasteasytrade.JRandTest.IO.FileRandomStream
      com.fasteasytrade.JRandTest.IO.FileAlgoRandomStream
          com.fasteasytrade.JRandTest.Algo.SkipjackRandom

All Implemented Interfaces:

AlgoRandomStream, RandomStream

public class SkipjackRandom

extends FileAlgoRandomStream

Skipjack algorithm as a random stream based on Skipjack encryption algorithm.

Author:

Zur Aougav

Field Summary

(package private) Skipjack	algo
(package private) byte[]	inputAlgoBuffer inputAlgoBuffer is filled with zeros to Skipjack.
(package private) byte[]	outAlgoBuffer The buffer is used as an output to Skipjack.
(package private) int	outAlgoBufferIx

Fields inherited from class com.fasteasytrade.JRandTest.IO.FileAlgoRandomStream

maxCount, privateKey, privateKeyLength, publicKey, publicKeyLength

Fields inherited from class com.fasteasytrade.JRandTest.IO.FileRandomStream

actualSize, buffer, count, countLastRead, filename, open, SIZE

Constructor Summary

SkipjackRandom()

SkipjackRandom(String keyFileName)

Method Summary

static void	main(String[] args)
boolean	openInputStream() open the input stream.
byte	readByte() read one byte from a file.
int	readInt() Processing is similar to readByte.
long	readLong() Processing is similar to readByte.
void	setup() setup will be implemented by each subclass
void	setupKeys() set up length and new arrays to public and private keys will be implemented by each algorithm

Methods inherited from class com.fasteasytrade.JRandTest.IO.FileAlgoRandomStream

getFilename, setFilename, setPrivateKey, setPrivateKeyFromFile, setPublicKey, setPublicKeyFromFile

Methods inherited from class com.fasteasytrade.JRandTest.IO.FileRandomStream

closeInputStream, finalize, isOpen

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.fasteasytrade.JRandTest.IO.RandomStream

closeInputStream, isOpen

Field Detail

algo

Skipjack algo

inputAlgoBuffer

byte[] inputAlgoBuffer

inputAlgoBuffer is filled with zeros to Skipjack.

outAlgoBuffer

byte[] outAlgoBuffer

The buffer is used as an output to Skipjack.

outAlgoBufferIx

int outAlgoBufferIx

Constructor Detail

SkipjackRandom

public SkipjackRandom()

SkipjackRandom

public SkipjackRandom(String keyFileName)

Method Detail

setupKeys

public void setupKeys()

Description copied from interface: AlgoRandomStream

set up length and new arrays to public and private keys

will be implemented by each algorithm

Specified by:

setupKeys in interface AlgoRandomStream

Overrides:

setupKeys in class FileAlgoRandomStream

See Also:

AlgoRandomStream.setupKeys()

setup

public void setup()

Description copied from class: FileAlgoRandomStream

setup will be implemented by each subclass

Specified by:

setup in interface AlgoRandomStream

Overrides:

setup in class FileAlgoRandomStream

See Also:

makes only once a new SHA1 object and an IV vector.

openInputStream

public boolean openInputStream()
                        throws Exception

Description copied from interface: RandomStream

open the input stream.

Specified by:

openInputStream in interface RandomStream

Overrides:

openInputStream in class FileRandomStream

Throws:

Exception

See Also:

if filename exists (not null), we open file and later will encrypt it. Else, algorithm will generate random data (as PRNG).

readByte

public byte readByte()
              throws Exception

Description copied from interface: RandomStream

read one byte from a file.

first time ( if !isOpen() ) open file/stream, and return byte

at end of file close stream and returns -1

Specified by:

readByte in interface RandomStream

Overrides:

readByte in class FileAlgoRandomStream

Throws:

Exception

See Also:

RandomStream.readByte()

readInt

public int readInt()
            throws Exception

Description copied from interface: RandomStream

Processing is similar to readByte.

Specified by:

readInt in interface RandomStream

Overrides:

readInt in class FileAlgoRandomStream

Throws:

Exception

See Also:

RandomStream.readInt()

readLong

public long readLong()
              throws Exception

Description copied from interface: RandomStream

Processing is similar to readByte.

Specified by:

readLong in interface RandomStream

Overrides:

readLong in class FileAlgoRandomStream

Throws:

Exception

See Also:

RandomStream.readLong()

main

public static void main(String[] args)