org.spongycastle.crypto.signers

Class RandomDSAKCalculator

java.lang.Object

org.spongycastle.crypto.signers.RandomDSAKCalculator

All Implemented Interfaces:

DSAKCalculator

public class RandomDSAKCalculator
extends java.lang.Object
implements DSAKCalculator

Constructor Summary

Constructors

Constructor and Description
RandomDSAKCalculator()

Method Summary

Modifier and Type	Method and Description
void	init(java.math.BigInteger n, java.math.BigInteger d, byte[] message) Deterministic initialiser.
void	init(java.math.BigInteger n, java.security.SecureRandom random) Non-deterministic initialiser.
boolean	isDeterministic() Return true if this calculator is deterministic, false otherwise.
java.math.BigInteger	nextK() Return the next valid value of K.

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomDSAKCalculator

public RandomDSAKCalculator()

Method Detail

isDeterministic

public boolean isDeterministic()

Description copied from interface: DSAKCalculator

Return true if this calculator is deterministic, false otherwise.

Specified by:

isDeterministic in interface DSAKCalculator

Returns:

true if deterministic, otherwise false.

init

public void init(java.math.BigInteger n,
                 java.security.SecureRandom random)

Description copied from interface: DSAKCalculator

Non-deterministic initialiser.

Specified by:

init in interface DSAKCalculator

Parameters:

n - the order of the DSA group.

random - a source of randomness.

init

public void init(java.math.BigInteger n,
                 java.math.BigInteger d,
                 byte[] message)

Description copied from interface: DSAKCalculator

Deterministic initialiser.

Specified by:

init in interface DSAKCalculator

Parameters:

n - the order of the DSA group.

d - the DSA private value.

message - the message being signed.

nextK

public java.math.BigInteger nextK()

Description copied from interface: DSAKCalculator

Return the next valid value of K.

Specified by:

nextK in interface DSAKCalculator

Returns:

a K value.