ostore.security.thresh
Class Dealer

java.lang.Object
  |
  +--ostore.security.thresh.Dealer

public class Dealer

extends Object

A Key Dealer for an RSA based (k,l) Threshold Signature Scheme
Reference: "Practical Threshold Signatures",
Victor Shoup (sho@zurich.ibm.com), IBM Research Paper RZ3121, 4/30/99

Version:

$Id: Dealer.java,v 1.7 2002/08/02 19:39:56 geels Exp $

Author:

Steve Weis

Constructor Summary

Dealer(String provider, int keysize)
Create a new instance of a key dealer

Method Summary

void	generateKeys(int k, int l) Generate a group public key and l shares for a (k,l) threshold signatures scheme
ostore.security.thresh.GroupKey	getGroupKey() Returns the group key
ThresholdPublicKey	getPublicKey()
KeyShare[]	getShares() Returns the initialized secret key shares
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

Dealer

public Dealer(String provider,
              int keysize)

Create a new instance of a key dealer

Parameters:

provider - - the provider to use for RSA KeyPair generator

keysize - - the size of the group key

Method Detail

generateKeys

public void generateKeys(int k,
                         int l)
                  throws ThresholdSigException

Generate a group public key and l shares for a (k,l)
threshold signatures scheme

Parameters:

k - - k valid signatures will verify

l - - l members of the group will receive shares

Throws:

ThresholdSigException

getGroupKey

public ostore.security.thresh.GroupKey getGroupKey()
                                            throws ThresholdSigException

Returns the group key

ThresholdSigException

getPublicKey

public ThresholdPublicKey getPublicKey()
                                throws ThresholdSigException

ThresholdSigException

getShares

public KeyShare[] getShares()
                     throws ThresholdSigException

Returns the initialized secret key shares

ThresholdSigException

main

public static void main(String[] args)