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cryptix.sasl.srp
Class IALG  

java.lang.Object
  cryptix.sasl.srp.IALG

All Implemented Interfaces:

java.lang.Cloneable

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public final class IALG

extends java.lang.Object

implements java.lang.Cloneable

A Factory class that returns IALG (Integrity Algorithm) instances that operate as described in the draft-burdis-cat-sasl-srp-04.

Since:

draft-burdis-cat-sasl-srp-04

Version:

$Revision: 1.1 $

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Field Summary
private  java.lang.String	algorithm
private static org.apache.log4j.Category	cat
private  javax.crypto.Mac	hmac

 

Constructor Summary
private	IALG(java.lang.String algorithm, javax.crypto.Mac hmac)           Trivial private constructor to enforce Singleton pattern.

 

Method Summary
java.lang.Object	clone()           This method may be called to create a new copy of the Object.
byte[]	doFinal()
static IALG	getInstance(java.lang.String algorithm, javax.crypto.SecretKey K)           Returns an instance of a SASL-SRP IALG implementation.
void	update(byte[] data)

 

Methods inherited from class java.lang.Object

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

 

Field Detail

cat

private static org.apache.log4j.Category cat

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algorithm

private java.lang.String algorithm

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hmac

private javax.crypto.Mac hmac

Constructor Detail

IALG

private IALG(java.lang.String algorithm,
             javax.crypto.Mac hmac)

Trivial private constructor to enforce Singleton pattern.

Method Detail

getInstance

public static IALG getInstance(java.lang.String algorithm,
                               javax.crypto.SecretKey K)
                        throws javax.security.sasl.SaslException

Returns an instance of a SASL-SRP IALG implementation.

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clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Description copied from class: java.lang.Object

This method may be called to create a new copy of the Object. The typical behavior is as follows:

• o == o.clone() is false
• o.getClass() == o.clone().getClass() is true
• o.equals(o) is true

However, these are not strict requirements, and may be violated if necessary. Of the three requirements, the last is the most commonly violated, particularly if the subclass does not override Object.equals(Object)>Object.equals(Object) 55 .

If the Object you call clone() on does not implement java.lang.Cloneable (which is a placeholder interface), then a CloneNotSupportedException is thrown. Notice that Object does not implement Cloneable; this method exists as a convenience for subclasses that do.

Object's implementation of clone allocates space for the new Object using the correct class, without calling any constructors, and then fills in all of the new field values with the old field values. Thus, it is a shallow copy. However, subclasses are permitted to make a deep copy.

All array types implement Cloneable, and override this method as follows (it should never fail):

 public Object clone()
 {
   try
     {
       super.clone();
     }
   catch (CloneNotSupportedException e)
     {
       throw new InternalError(e.getMessage());
     }
 }
 

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update

public void update(byte[] data)

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doFinal

public byte[] doFinal()

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