iaik.pkcs.pkcs11.parameters

Class CbcEncryptDataParameters

java.lang.Object

iaik.pkcs.pkcs11.parameters.CbcEncryptDataParameters

All Implemented Interfaces:

Parameters, java.lang.Cloneable

Direct Known Subclasses:

AesCbcEncryptDataParameters, DesCbcEncryptDataParameters

public abstract class CbcEncryptDataParameters
extends java.lang.Object
implements Parameters

This class encapsulates parameters CBC key derivation algorithms.

Version:

1.0

Author:

Karl Scheibelhofer

Field Summary

Fields

Modifier and Type	Field and Description
protected int	blockSize_ This is the block size in byte of the underlying cipher, e.g.
protected byte[]	data_ The data to be used in the key derivation.
protected byte[]	iv_ The initialization vector for CBC mode of the cipher.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CbcEncryptDataParameters(int blockSize, byte[] iv, byte[] data) Create a new CbcEncryptDataParameters object with the given IV and data.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone() Create a (deep) clone of this object.
boolean	equals(java.lang.Object otherObject) Compares all member variables of this object with the other object.
int	getBlockSize() Get the block size of the underlying cipher in bytes.
byte[]	getData() Get the data for key derivation.
byte[]	getInitializationVector() Get the initialization vector for CBC mode.
int	hashCode() The overriding of this method should ensure that the objects of this class work correctly in a hashtable.
void	setData(byte[] data) Set the key derivation data.
void	setInitializationVector(byte[] iv) Set the initialization vector for CBC mode.
java.lang.String	toString() Returns the string representation of this object.

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface iaik.pkcs.pkcs11.parameters.Parameters

getPKCS11ParamsObject

Field Detail

blockSize_

protected int blockSize_

This is the block size in byte of the underlying cipher, e.g. 8 for DES and Triple DES and 16 for AES.

iv_

protected byte[] iv_

The initialization vector for CBC mode of the cipher.

data_

protected byte[] data_

The data to be used in the key derivation. It must have a length that is a multiple of the block-size of the underlying cipher.

Constructor Detail

CbcEncryptDataParameters

protected CbcEncryptDataParameters(int blockSize,
                                   byte[] iv,
                                   byte[] data)

Create a new CbcEncryptDataParameters object with the given IV and data.

Parameters:

blockSize - The block size of the cipher.

iv - The initialization vector which's length must be block size.

data - The key derivation data which's length must be multiple of the block size.

Preconditions:

(blockSize < 0) and (iv != null) and (iv.length == blockSize) and (data != null) and (data.length%blockSize == 0)

Method Detail

clone

public java.lang.Object clone()

Create a (deep) clone of this object.

Overrides:

clone in class java.lang.Object

Returns:

A clone of this object.

Postconditions:

(result != null) and (result instanceof DesCbcEncryptDataParameters) and (result.equals(this))

getBlockSize

public int getBlockSize()

Get the block size of the underlying cipher in bytes.

Returns:

The block size in bytes.

getInitializationVector

public byte[] getInitializationVector()

Get the initialization vector for CBC mode.

Returns:

The initialization vector.

Postconditions:

(result != null) and (result.length == getBlockSize())

setInitializationVector

public void setInitializationVector(byte[] iv)

Set the initialization vector for CBC mode.

Parameters:

iv - The initialization vector.

Preconditions:

(iv != null) and (iv.length == getBlockSize())

getData

public byte[] getData()

Get the data for key derivation.

Returns:

The data.

Postconditions:

(result != null) and (result.length%getBlockSize() == 0)

setData

public void setData(byte[] data)

Set the key derivation data.

Parameters:

data - The key derivation data.

Preconditions:

(data != null) and (data.length%getBlockSize() == 0)

toString

public java.lang.String toString()

Returns the string representation of this object. Do not parse data from this string, it is for debugging only.

Overrides:

toString in class java.lang.Object

Returns:

A string representation of this object.

equals

public boolean equals(java.lang.Object otherObject)

Compares all member variables of this object with the other object. Returns only true, if all are equal in both objects.

Overrides:

equals in class java.lang.Object

Parameters:

otherObject - The other object to compare to.

Returns:

True, if other is an instance of this class and all member variables of both objects are equal. False, otherwise.

hashCode

public int hashCode()

The overriding of this method should ensure that the objects of this class work correctly in a hashtable.

Overrides:

hashCode in class java.lang.Object

Returns:

The hash code of this object.