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// Copyright (c) 2002 Graz University of Technology. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. The end-user documentation included with the redistribution, if any, must
// include the following acknowledgment:
//
// "This product includes software developed by IAIK of Graz University of
// Technology."
//
// Alternately, this acknowledgment may appear in the software itself, if and
// wherever such third-party acknowledgments normally appear.
//
// 4. The names "Graz University of Technology" and "IAIK of Graz University of
// Technology" must not be used to endorse or promote products derived from
// this software without prior written permission.
//
// 5. Products derived from this software may not be called "IAIK PKCS Wrapper",
// nor may "IAIK" appear in their name, without prior written permission of
// Graz University of Technology.
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE LICENSOR BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package iaik.pkcs.pkcs11.parameters;
import iaik.pkcs.pkcs11.TokenRuntimeException;
import iaik.pkcs.pkcs11.Util;
import iaik.pkcs.pkcs11.wrapper.Constants;
import iaik.pkcs.pkcs11.wrapper.Functions;
/**
* This class encapsulates parameters for general block ciphers in CBC mode.
* Those are all Mechanism.*_CBC and Mechanism.*_CBC_PAD mechanisms. This class
* also applies to other mechanisms which require just an initialization vector
* as parameter.
*
* @author Karl Scheibelhofer
* @version 1.0
* @invariants (initializationVector_ <> null)
*/
public class InitializationVectorParameters implements Parameters {
/**
* The initialization vector.
*/
protected byte[] initializationVector_;
/**
* Create a new InitializationVectorParameters object with the given
* initialization vector.
*
* @param initializationVector
* The initialization vector.
* @preconditions (initializationVector <> null)
* @postconditions
*/
public InitializationVectorParameters(byte[] initializationVector) {
initializationVector_ = Util.requireNonNull("initializationVector",
initializationVector);
}
/**
* Create a (deep) clone of this object.
*
* @return A clone of this object.
* @preconditions
* @postconditions (result <> null)
* and (result instanceof InitializationVectorParameters)
* and (result.equals(this))
*/
@Override
public java.lang.Object clone() {
InitializationVectorParameters clone;
try {
clone = (InitializationVectorParameters) super.clone();
clone.initializationVector_
= (byte[]) this.initializationVector_.clone();
} catch (CloneNotSupportedException ex) {
// this must not happen, because this class is cloneable
throw new TokenRuntimeException(
"An unexpected clone exception occurred.", ex);
}
return clone;
}
/**
* Get this parameters object as a byte array.
*
* @return This object as a byte array.
* @preconditions
* @postconditions (result <> null)
*/
@Override
public Object getPKCS11ParamsObject() {
return initializationVector_;
}
/**
* Get the initialization vector.
*
* @return The initialization vector.
* @preconditions
* @postconditions (result <> null)
*/
public byte[] getInitializationVector() {
return initializationVector_;
}
/**
* Set the initialization vector.
*
* @param initializationVector
* The initialization vector.
* @preconditions (initializationVector <> null)
* @postconditions
*/
public void setInitializationVector(byte[] initializationVector) {
initializationVector_ = Util.requireNonNull("initializationVector",
initializationVector);
}
/**
* Returns the string representation of this object. Do not parse data from
* this string, it is for debugging only.
*
* @return A string representation of this object.
*/
@Override
public String toString() {
StringBuilder buffer = new StringBuilder();
buffer.append(Constants.INDENT);
buffer.append("Initialization Vector (hex): ");
buffer.append(Functions.toHexString(initializationVector_));
return buffer.toString();
}
/**
* Compares all member variables of this object with the other object.
* Returns only true, if all are equal in both objects.
*
* @param otherObject
* The other object to compare to.
* @return True, if other is an instance of this class and all member
* variables of both objects are equal. False, otherwise.
* @preconditions
* @postconditions
*/
@Override
public boolean equals(java.lang.Object otherObject) {
if (this == otherObject) {
return true;
}
if (!(otherObject instanceof InitializationVectorParameters)) {
return false;
}
InitializationVectorParameters other
= (InitializationVectorParameters) otherObject;
return Functions.equals(this.initializationVector_,
other.initializationVector_);
}
/**
* The overriding of this method should ensure that the objects of this
* class work correctly in a hashtable.
*
* @return The hash code of this object.
* @preconditions
* @postconditions
*/
@Override
public int hashCode() {
return Functions.hashCode(initializationVector_);
}
}
