Module ibm.crypto.hdwrcca

Package com.ibm.crypto.hdwrCCA.provider

Class HMACSHA256KeyFactory

java.lang.Object

javax.crypto.SecretKeyFactorySpi

com.ibm.crypto.hdwrCCA.provider.HMACSHA256KeyFactory

public final class HMACSHA256KeyFactory
extends SecretKeyFactorySpi

This class builds a secret key for use with the HMACSHA256 algorithm.

Constructor Summary

Constructors

Constructor	Description
HMACSHA256KeyFactory()	Set the HMAC algorithm name and verify the JCE framework.

Method Summary

Modifier and Type	Method	Description
protected SecretKey	engineGenerateSecret(KeySpec keySpec)	Generates a HMAC SecretKey object from the provided key specification (key material).
protected KeySpec	engineGetKeySpec(SecretKey key, Class keySpec)	This method is currently unsupported.
protected SecretKey	engineTranslateKey(SecretKey key)	This method is currently unsupported.

Methods inherited from class java.lang.Object

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

Constructor Details

HMACSHA256KeyFactory

public HMACSHA256KeyFactory()

Set the HMAC algorithm name and verify the JCE framework.

Throws:

SecurityException - if unable to verify the JCE framework.

Method Details

engineGenerateSecret

protected SecretKey engineGenerateSecret(KeySpec keySpec)
                                  throws InvalidKeySpecException

Generates a HMAC SecretKey object from the provided key specification (key material).

Specified by:

engineGenerateSecret in class SecretKeyFactorySpi

Parameters:

keySpec - specification (key material) of the HMAC secret key

Returns:

HMAC secret key

Throws:

InvalidKeySpecException - if the given key specification is inappropriate for this key factory to produce a HMAC secret key.

engineGetKeySpec

protected KeySpec engineGetKeySpec(SecretKey key,
 Class keySpec)

This method is currently unsupported.

Specified by:

engineGetKeySpec in class SecretKeyFactorySpi

Throws:

UnsupportedOperationException - at all times, since this method is unsupported.

engineTranslateKey

protected SecretKey engineTranslateKey(SecretKey key)

This method is currently unsupported.

Specified by:

engineTranslateKey in class SecretKeyFactorySpi

Throws:

UnsupportedOperationException - at all times, since this method is unsupported.