Package org.bouncycastle.crypto.generators

Class DSAParametersGenerator

java.lang.Object

org.bouncycastle.crypto.generators.DSAParametersGenerator

public class DSAParametersGenerator
extends Object

Generate suitable parameters for DSA, in line with FIPS 186-2, or FIPS 186-3.

Constructor Summary

Constructors

Constructor	Description
DSAParametersGenerator()
DSAParametersGenerator(Digest digest)

Method Summary

Modifier and Type	Method	Description
DSAParameters	generateParameters()	which generates the p and g values from the given parameters, returning the DSAParameters object.
void	init(int size, int certainty, SecureRandom random)	initialise the key generator.
void	init(DSAParameterGenerationParameters params)	Initialise the key generator for DSA 2.

Methods inherited from class java.lang.Object

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

Constructor Details

DSAParametersGenerator

public DSAParametersGenerator()

DSAParametersGenerator

public DSAParametersGenerator(Digest digest)

Method Details

init

public void init(int size,
 int certainty,
 SecureRandom random)

initialise the key generator.

Parameters:

size - size of the key (range 2^512 -> 2^1024 - 64 bit increments)

certainty - measure of robustness of prime (for FIPS 186-2 compliance this should be at least 80).

random - random byte source.

init

public void init(DSAParameterGenerationParameters params)

Initialise the key generator for DSA 2.

Use this init method if you need to generate parameters for DSA 2 keys.

Parameters:

params - DSA 2 key generation parameters.

generateParameters

public DSAParameters generateParameters()

which generates the p and g values from the given parameters, returning the DSAParameters object.

Note: can take a while...

Returns:

a generated DSA parameters object.