com.ibm.crypto.ibmjcehybrid.provider

Class DSAKeyPairGeneratorHybrid

java.lang.Object

java.security.KeyPairGeneratorSpi

java.security.KeyPairGenerator

com.ibm.crypto.ibmjcehybrid.provider.DSAKeyPairGeneratorHybrid

public final class DSAKeyPairGeneratorHybrid
extends java.security.KeyPairGenerator

This class is a facade for the DSA algorithm key pair generator.

Field Summary

Fields

Modifier and Type	Field and Description
protected static com.ibm.misc.Debug	debug The debug object, null if not instantiated at JVM startup.

Constructor Summary

Constructors

Constructor and Description
DSAKeyPairGeneratorHybrid() Creates an instance of the DSAKeyPairGeneratorHybrid class.

Method Summary

Modifier and Type	Method and Description
java.security.KeyPair	generateKeyPair() Generates an RSA key pair.
protected void	getGenerator() Creates an instance of the KeyPairGenerator.
void	initialize(java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random) Initializes this KeyPairGenerator for given parameters and secure random source.
void	initialize(int strength, java.security.SecureRandom random) Initializes this KeyPairGenerator for given modulus size and secure random source.

Methods inherited from class java.security.KeyPairGenerator

genKeyPair, getAlgorithm, getInstance, getInstance, getInstance, getProvider, initialize, initialize

Methods inherited from class java.lang.Object

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

Field Detail

debug

protected static com.ibm.misc.Debug debug

The debug object, null if not instantiated at JVM startup.

Constructor Detail

DSAKeyPairGeneratorHybrid

public DSAKeyPairGeneratorHybrid()

Creates an instance of the DSAKeyPairGeneratorHybrid class.

Method Detail

initialize

public void initialize(java.security.spec.AlgorithmParameterSpec params,
                       java.security.SecureRandom random)
                throws java.security.InvalidAlgorithmParameterException,
                       java.security.InvalidParameterException

Initializes this KeyPairGenerator for given parameters and secure random source.

Overrides:

initialize in class java.security.KeyPairGenerator

Parameters:

params - the RSAKeyParameterSpec for this object.

random - the SecureRandom object for generating random numbers.

Throws:

java.security.InvalidAlgorithmParameterException - thrown when parameter set is not recognized.

java.security.InvalidParameterException

initialize

public void initialize(int strength,
                       java.security.SecureRandom random)
                throws java.security.InvalidParameterException

Initializes this KeyPairGenerator for given modulus size and secure random source. The private key will be stored in the CLEAR not the hardware or the PKDS, the private key label will be randomly generated and the key will be used for signing purposes.

Overrides:

initialize in class java.security.KeyPairGenerator

Parameters:

strength - the length of the key to be generated.

random - the SecureRandom object for generating a random number.

Throws:

java.security.InvalidParameterException - thrown when a parameter is not recognized.

generateKeyPair

public java.security.KeyPair generateKeyPair()

Generates an RSA key pair.

Overrides:

generateKeyPair in class java.security.KeyPairGenerator

Returns:

a KeyPair contains a pair of generated RSA keys

Throws:

java.lang.IllegalArgumentException - in the key label formal is not valid

getGenerator

protected void getGenerator()

Creates an instance of the KeyPairGenerator.

Throws:

java.lang.RuntimeException - if this method fails to create and to initialize the message digest.