com.ibm.atp.auth
Class Challenge

java.lang.Object
  com.ibm.atp.auth.ByteSequence
      com.ibm.atp.auth.Challenge

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable

public final class Challenge

extends ByteSequence

The Challenge class is random byte sequence which is a challenge for authentication.

Version:

1.00 $Date: 2001/07/28 06:33:42 $

Author:

ONO Kouichi

See Also:

Serialized Form

Field Summary

static int	LENGTH The length of byte sequence.
(package private) static long	serialVersionUID serial version UID

Fields inherited from class com.ibm.atp.auth.ByteSequence

Constructor Summary

Challenge()
Constructor creates a secure random generator, and generate byte sequence as a challenge for authentication.

Challenge(Challenge challenge)
Constructor creates byte sequence as a copy of given byte sequence as a challenge for authentication.

Challenge(java.lang.String str)
Constructor creates byte sequence as a copy of given hexadecimal string of encoded bytes as a challenge for authentication.

Method Summary

byte[]	challenge() Returns current byte sequence as a challenge for authentication.
java.lang.String	toString() Returns a hexadecimal string representation of the byte sequence.

Methods inherited from class com.ibm.atp.auth.ByteSequence

append, append, append, append, clone, copy, copy, copy, equals, equals, equals, length, sequence

Methods inherited from class java.lang.Object

finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

serialVersionUID

static final long serialVersionUID

serial version UID

See Also:

Constant Field Values

LENGTH

public static final int LENGTH

The length of byte sequence.

See Also:

Constant Field Values

Constructor Detail

Challenge

public Challenge()

Constructor creates a secure random generator, and generate byte sequence as a challenge for authentication.

Challenge

public Challenge(Challenge challenge)

Constructor creates byte sequence as a copy of given byte sequence as a challenge for authentication.

Parameters:

challenge - a byte sequence to be copied as a challenge

Challenge

public Challenge(java.lang.String str)

Constructor creates byte sequence as a copy of given hexadecimal string of encoded bytes as a challenge for authentication.

Parameters:

str - a string of encoded byte sequence to be copied as a challenge

Method Detail

challenge

public final byte[] challenge()

Returns current byte sequence as a challenge for authentication.

Returns:

current byte sequence as a challenge for authentication.

toString

public java.lang.String toString()

Returns a hexadecimal string representation of the byte sequence. The series of hexadecimal strings are the contents of byte sequence.

Overrides:

toString in class ByteSequence

Returns:

a hexadecimal string representation of the byte sequence

See Also:

ByteSequence.toString()