part6
Class WeakRedundancy

java.lang.Object
  part6.WeakRedundancy

All Implemented Interfaces:

Redundancy

public class WeakRedundancy

extends java.lang.Object

implements Redundancy

A weak redundancy class.

Constructor Summary

WeakRedundancy()

Method Summary

boolean	ok(java.math.BigInteger x) A method to test if the value x was produced by protect().
java.math.BigInteger	protect(java.math.BigInteger x) A method to add redundancy to a big integer x.
java.math.BigInteger	recover(java.math.BigInteger x) A method to recover a big integer value from a redundant value x produced by protect().

Methods inherited from class java.lang.Object

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

Constructor Detail

WeakRedundancy

public WeakRedundancy()
               throws java.lang.Exception

Throws:

java.lang.Exception

Method Detail

protect

public java.math.BigInteger protect(java.math.BigInteger x)
                             throws java.lang.Exception

Description copied from interface: Redundancy

A method to add redundancy to a big integer x.

Specified by:

protect in interface Redundancy

Throws:

java.lang.Exception

recover

public java.math.BigInteger recover(java.math.BigInteger x)
                             throws java.lang.Exception

Description copied from interface: Redundancy

A method to recover a big integer value from a redundant value x produced by protect().

Specified by:

recover in interface Redundancy

Throws:

java.lang.Exception - if the value x was not created by protect().

ok

public boolean ok(java.math.BigInteger x)
           throws java.lang.Exception

Description copied from interface: Redundancy

A method to test if the value x was produced by protect().

Specified by:

ok in interface Redundancy

Throws:

java.lang.Exception