iaik.pkcs.pkcs11.provider.macs

Class Rc5Mac

java.lang.Object

javax.crypto.MacSpi

iaik.pkcs.pkcs11.provider.macs.PKCS11Mac

iaik.pkcs.pkcs11.provider.macs.Rc5Mac

All Implemented Interfaces:

PKCS11EngineClass

public class Rc5Mac
extends PKCS11Mac

This is an implementation of a RC5 MAC class that uses the IAIK PKCS#11 wrapper to access the token.

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.lang.String	MAC_ALGORITHM_NAME The JCA standard name of this signature algorithm.
protected iaik.pkcs.pkcs11.Mechanism	mechanism_ The currently used mechanism (cached).
protected javax.crypto.spec.RC5ParameterSpec	rc5ParameterSpec_ The parameters for the RC5 algorithm.
protected boolean	rc5ParameterSpecChanged_ Indicates that the rc2ParameterSpec_ has been changed.

Fields inherited from class iaik.pkcs.pkcs11.provider.macs.PKCS11Mac

buffer_, currentKeyIsSoftwareKey_, defaultMacLength_, initialized_, key_, keyObject_, params_, pkcs11OperationInitialized_, session_, softwareDelegate_, tokenManager_, updateUsed_, usedMechanismInfos_, usedMechanisms_

Constructor Summary

Constructors

Constructor and Description
Rc5Mac() Default constructor.

Method Summary

Modifier and Type	Method and Description
protected java.lang.String	getAlgorithmName() Get the JCA standard name of this signautre algorithm.
protected iaik.pkcs.pkcs11.Mechanism	getMechanism() Get the current mechanism of this cipher object.
protected int	pkcs11GetMacLength() Returns the length of the calculated MAC value in bytes.
protected void	pkcs11Init(java.security.Key key, java.security.spec.AlgorithmParameterSpec params) Initializes this Mac object with given secret key and algorithm parameter specification.

Methods inherited from class iaik.pkcs.pkcs11.provider.macs.PKCS11Mac

checkKeyObject, engineDoFinal, engineGetMacLength, engineInit, engineReset, engineUpdate, engineUpdate, finalize, finalizePkcs11Operation, getUsedMechanismFeatures, initialize, initializePkcs11Operation, initializeSession, initializeSoftwareDelegate, isSupportedBy, pkcs11DoFinal, pkcs11Prepare, pkcs11Reset, pkcs11Update, pkcs11Update

Methods inherited from class javax.crypto.MacSpi

clone, engineUpdate

Methods inherited from class java.lang.Object

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

Field Detail

MAC_ALGORITHM_NAME

protected static java.lang.String MAC_ALGORITHM_NAME

The JCA standard name of this signature algorithm.

mechanism_

protected iaik.pkcs.pkcs11.Mechanism mechanism_

The currently used mechanism (cached).

rc5ParameterSpec_

protected javax.crypto.spec.RC5ParameterSpec rc5ParameterSpec_

The parameters for the RC5 algorithm.

rc5ParameterSpecChanged_

protected boolean rc5ParameterSpecChanged_

Indicates that the rc2ParameterSpec_ has been changed. The mechanism needs to be updated.

Constructor Detail

Rc5Mac

public Rc5Mac()

Default constructor.

Method Detail

getAlgorithmName

protected java.lang.String getAlgorithmName()

Description copied from class: PKCS11Mac

Get the JCA standard name of this signautre algorithm.

Specified by:

getAlgorithmName in class PKCS11Mac

Returns:

The JCA standard name of this signautre algorithm.

pkcs11GetMacLength

protected int pkcs11GetMacLength()

Returns the length of the calculated MAC value in bytes.

Overrides:

pkcs11GetMacLength in class PKCS11Mac

Returns:

the MAC value length in bytes.

pkcs11Init

protected void pkcs11Init(java.security.Key key,
                          java.security.spec.AlgorithmParameterSpec params)
                   throws java.security.InvalidKeyException,
                          java.security.InvalidAlgorithmParameterException

Description copied from class: PKCS11Mac

Initializes this Mac object with given secret key and algorithm parameter specification.

Overrides:

pkcs11Init in class PKCS11Mac

Parameters:

key - the secret key for initializing this MAC object.

params - the algorithm parameter specification.

Throws:

java.security.InvalidKeyException - if the given key cannot be used for initializing this MAC object

java.security.InvalidAlgorithmParameterException - if the given algorithm parameters do not match to this MAC object

getMechanism

protected iaik.pkcs.pkcs11.Mechanism getMechanism()

Description copied from class: PKCS11Mac

Get the current mechanism of this cipher object. This may change with the mode of operation and padding. This mechanism must also include any required parameter objects. This method can expect that the key_ object is already correctly set. For this key the method must return an appropriate mechanism.

Overrides:

getMechanism in class PKCS11Mac

Returns:

The mechanism this object uses for encryption and decryption. If the currently set combination of mode and padding is unsupported, this method returns null.