hcrypto.analyzer
Class FreqGaIndividual

java.lang.Object
  |
  +--hcrypto.analyzer.GaIndividual
        |
        +--hcrypto.analyzer.FreqGaIndividual

All Implemented Interfaces:

java.lang.Comparable

public class FreqGaIndividual

extends GaIndividual

implements java.lang.Comparable

Fields inherited from class hcrypto.analyzer.GaIndividual

cipher, ciphertext, decrypt, fitness, key, sKey

Constructor Summary

FreqGaIndividual(GaIndividual i)
Copy constructor

FreqGaIndividual(java.lang.String text, java.lang.String initKey)
This constructor takes an initial distribution for the key as a parameter.

Method Summary

void	calcFitness() This method should be implemented in the subclass.
void	cross(GaIndividual i) Implement a cross algorithm.
java.lang.String	displayCrossData()
int	mutate(double rate) This version of mutate swaps two random characters in the key.
java.lang.String	toString()

Methods inherited from class hcrypto.analyzer.GaIndividual

compareTo, getFitness, getKey, swap

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Comparable

compareTo

Constructor Detail

FreqGaIndividual

public FreqGaIndividual(java.lang.String text,
                        java.lang.String initKey)

This constructor takes an initial distribution for the key as a parameter.

Parameters:

text - -- A string giving the text to be decrypted.

initKey - -- A string giving the initial values for the key.

FreqGaIndividual

public FreqGaIndividual(GaIndividual i)

Copy constructor

Method Detail

cross

public void cross(GaIndividual i)

Implement a cross algorithm.

Overrides:

cross in class GaIndividual

Following copied from class: hcrypto.analyzer.GaIndividual

Parameters:

i1 - an Individual parent

i2 - an Individual parent

mutate

public int mutate(double rate)

This version of mutate swaps two random characters in the key. The mutation is done with frequency equal to rate. The resulting mutant is discarded if it does not improve the fitness of the individual.

Overrides:

mutate in class GaIndividual

Parameters:

rate - is the mutation rate

calcFitness

public void calcFitness()

Description copied from class: GaIndividual

This method should be implemented in the subclass.

Overrides:

calcFitness in class GaIndividual

displayCrossData

public java.lang.String displayCrossData()

Overrides:

displayCrossData in class GaIndividual

toString

public java.lang.String toString()

Overrides:

toString in class GaIndividual