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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;
import sun.security.pkcs11.wrapper.CK_PBE_PARAMS;
/**
* This class encapsulates parameters for the Mechanism.PBA_* and
* Mechanism.PBA_SHA1_WITH_SHA1_HMAC mechanisms.
*
* @author Karl Scheibelhofer
* @version 1.0
* @invariants (initializationVector_ == null)
* or ((initializationVector_ <> null)
* and (initializationVector_.length == 8))
* and (password_ <> null)
* and (salt_ <> null)
*/
@SuppressWarnings("restriction")
public class PBEParameters implements Parameters {
/**
* The 8-byte initialization vector (IV), if an IV is required.
*/
protected char[] initializationVector_;
/**
* The password to be used in the PBE key generation.
*/
protected char[] password_;
/**
* The salt to be used in the PBE key generation.
*/
protected char[] salt_;
/**
* The number of iterations required for the generation.
*/
protected long iterations_;
/**
* Create a new PBEDeriveParameters object with the given attributes.
*
* @param initializationVector
* The 8-byte initialization vector (IV), if an IV is required.
* @param password
* The password to be used in the PBE key generation.
* @param salt
* The salt to be used in the PBE key generation.
* @param iterations
* The number of iterations required for the generation.
* @preconditions (initializationVector == null)
* or ((initializationVector <> null)
* and (initializationVector.length == 8))
* and (password <> null)
* and (salt <> null)
* @postconditions
*/
public PBEParameters(char[] initializationVector,
char[] password,
char[] salt,
long iterations) {
if ((initializationVector != null)
&& (initializationVector.length != 8)) {
throw new IllegalArgumentException(
"Argument \"initializationVector\" must be null or must have"
+ " length 8, if it is not null.");
}
initializationVector_ = initializationVector;
password_ = Util.requireNonNull("password", password);
salt_ = Util.requireNonNull("salt", salt);
iterations_ = iterations;
}
/**
* Create a (deep) clone of this object.
*
* @return A clone of this object.
* @preconditions
* @postconditions (result <> null)
* and (result instanceof PBEParameters)
* and (result.equals(this))
*/
@Override
public java.lang.Object clone() {
PBEParameters clone;
try {
clone = (PBEParameters) super.clone();
clone.initializationVector_
= (char[]) this.initializationVector_.clone();
clone.password_ = (char[]) this.password_.clone();
clone.salt_ = (char[]) this.salt_.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 an object of the CK_PBE_PARAMS class.
*
* @return This object as a CK_PBE_PARAMS object.
* @preconditions
* @postconditions (result <> null)
*/
@Override
public Object getPKCS11ParamsObject() {
CK_PBE_PARAMS params = new CK_PBE_PARAMS();
params.pInitVector = initializationVector_;
params.pPassword = password_;
params.pSalt = salt_;
params.ulIteration = iterations_;
return params;
}
/**
* Get the 8-byte initialization vector (IV), if an IV is required.
*
* @return The 8-byte initialization vector (IV), if an IV is required.
* @preconditions
* @postconditions (result == null)
* or ((result <> null)
* and (result.length == 8))
*/
public char[] getInitializationVector() {
return initializationVector_;
}
/**
* Get the password to be used in the PBE key generation.
*
* @return The password to be used in the PBE key generation.
* @preconditions
* @postconditions (result <> null)
*/
public char[] getPassword() {
return password_;
}
/**
* Get the salt to be used in the PBE key generation.
*
* @return The salt to be used in the PBE key generation.
* @preconditions
* @postconditions (result <> null)
*/
public char[] getSalt() {
return salt_;
}
/**
* Get the number of iterations required for the generation.
*
* @return The number of iterations required for the generation.
* @preconditions
* @postconditions
*/
public long getIterations() {
return iterations_;
}
/**
* Set the 8-byte initialization vector (IV), if an IV is required.
*
* @param initializationVector
* The 8-byte initialization vector (IV), if an IV is required.
* @preconditions (initializationVector == null)
* or ((initializationVector <> null)
* and (initializationVector.length == 8))
* @postconditions
*/
public void setInitializationVector(char[] initializationVector) {
if ((initializationVector != null)
&& (initializationVector.length != 8)) {
throw new IllegalArgumentException(
"Argument \"initializationVector\" must be null or must have "
+ "length 8, if it is not null.");
}
initializationVector_ = initializationVector;
}
/**
* Set the password to be used in the PBE key generation.
*
* @param password
* The password to be used in the PBE key generation.
* @preconditions (password <> null)
* @postconditions
*/
public void setPassword(char[] password) {
password_ = Util.requireNonNull("password", password);
}
/**
* Set the salt to be used in the PBE key generation.
*
* @param salt
* The salt to be used in the PBE key generation.
* @preconditions (salt <> null)
* @postconditions
*/
public void setSalt(char[] salt) {
salt_ = Util.requireNonNull("salt", salt);;
}
/**
* Set the number of iterations required for the generation.
*
* @param iterations
* The number of iterations required for the generation.
* @preconditions
* @postconditions
*/
public void setIterations(long iterations) {
iterations_ = iterations;
}
/**
* 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: ");
buffer.append((initializationVector_ != null)
? new String(initializationVector_) : null);
buffer.append(Constants.NEWLINE_INDENT);
buffer.append("Password: ");
buffer.append((password_ != null) ? new String(password_) : null);
buffer.append(Constants.NEWLINE_INDENT);
buffer.append("Salt: ");
buffer.append((salt_ != null) ? new String(salt_) : null);
buffer.append(Constants.NEWLINE_INDENT);
buffer.append("Iterations (dec): ");
buffer.append(iterations_);
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 PBEParameters)) {
return false;
}
PBEParameters other = (PBEParameters) otherObject;
return Functions.equals(this.initializationVector_,
other.initializationVector_)
&& Functions.equals(this.password_, other.password_)
&& Functions.equals(this.salt_, other.salt_)
&& (this.iterations_ == other.iterations_);
}
/**
* 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_)
^ Functions.hashCode(password_)
^ Functions.hashCode(salt_)
^ ((int) iterations_);
}
}
