com.ibm.crypto.hdwrCCA.provider

Class HmacMD5KeyGenerator

java.lang.Object

javax.crypto.KeyGeneratorSpi

com.ibm.crypto.hdwrCCA.provider.HmacMD5KeyGenerator

public final class HmacMD5KeyGenerator
extends javax.crypto.KeyGeneratorSpi

This class generates a secret key for use with the HMAC-MD5 algorithm.

Constructor Summary

Constructors

Constructor and Description
HmacMD5KeyGenerator() Verify the JCE framework in the constructor.

Method Summary

Modifier and Type	Method and Description
protected javax.crypto.SecretKey	engineGenerateKey() Generates an HMAC-MD5 key.
protected void	engineInit(java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random) Initializes this key generator with the specified parameter set and a user-provided source of randomness.
protected void	engineInit(int keysize, java.security.SecureRandom random) Initializes this key generator for a certain keysize, using the given source of randomness.
protected void	engineInit(java.security.SecureRandom random) Initializes this key generator.

Methods inherited from class java.lang.Object

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

Constructor Detail

HmacMD5KeyGenerator

public HmacMD5KeyGenerator()

Verify the JCE framework in the constructor.

Throws:

java.lang.SecurityException - if fails to verify the JCE framework.

Method Detail

engineInit

protected void engineInit(java.security.SecureRandom random)

Initializes this key generator.

Specified by:

engineInit in class javax.crypto.KeyGeneratorSpi

Parameters:

random - the source of randomness for this generator

engineInit

protected void engineInit(java.security.spec.AlgorithmParameterSpec params,
                          java.security.SecureRandom random)
                   throws java.security.InvalidAlgorithmParameterException

Initializes this key generator with the specified parameter set and a user-provided source of randomness.

Specified by:

engineInit in class javax.crypto.KeyGeneratorSpi

Parameters:

params - the key generation parameters

random - the source of randomness for this key generator

Throws:

java.security.InvalidAlgorithmParameterException - if params is inappropriate for this key generator

engineInit

protected void engineInit(int keysize,
                          java.security.SecureRandom random)

Initializes this key generator for a certain keysize, using the given source of randomness.

Specified by:

engineInit in class javax.crypto.KeyGeneratorSpi

Parameters:

keysize - the keysize. This is an algorithm-specific metric specified in number of bits.

random - the source of randomness for this key generator

engineGenerateKey

protected javax.crypto.SecretKey engineGenerateKey()

Generates an HMAC-MD5 key.

Specified by:

engineGenerateKey in class javax.crypto.KeyGeneratorSpi

Returns:

the new HMAC-MD5 key