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Class jnfs.security.DSAChallenge

java.lang.Object
   |
   +----jnfs.security.DSAChallenge

public class DSAChallenge

extends Object

implements Challenge

Version:

$Id: DSAChallenge.java,v 1.18 1997/05/20 19:16:20 mjr Exp $

Author:

Michael John Radwin

DSAChallenge(String, SecureRandom)

Creates a challenge with a default number of random bytes.

DSAChallenge(String, SecureRandom, int)

Creates a challenge with length random bytes.

bytes()

Returns a copy of the random bytes associated with this challenge.

equals(Object)

Tests for equality of Challenges.

issueResponse(PrivateKey)

Uses the PrivateKey to sign this challenge and returns a new Response which contains the signed version of this challenge.

user()

Returns the name of the user associated with this challenge.

verifyResponse(Response, PublicKey)

Uses the PublicKey to verify that the Response is a signed version of this challenge.

 public DSAChallenge(String user,
                     SecureRandom rand)

Creates a challenge with a default number of random bytes.

See Also:

generateChallenge

 public DSAChallenge(String user,
                     SecureRandom rand,
                     int length)

Creates a challenge with length random bytes.

See Also:

generateChallenge

 public String user()

Returns the name of the user associated with this challenge.

 public byte[] bytes()

Returns a copy of the random bytes associated with this challenge.

 public boolean equals(Object other)

Tests for equality of Challenges.

Overrides:

equals in class Object

 public synchronized Response issueResponse(PrivateKey privkey) throws InvalidKeyException

Uses the PrivateKey to sign this challenge and returns a new Response which contains the signed version of this challenge. Typically called from the client.

Throws: InvalidKeyException

if the key is invalid.

 public synchronized boolean verifyResponse(Response credentials,
                                            PublicKey pubkey) throws InvalidKeyException

Uses the PublicKey to verify that the Response is a signed version of this challenge. Typically called from the server.

Throws: InvalidKeyException

if the key is invalid.

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