/*
* =============================================================================
*
* Copyright (c) 2007-2010, The JASYPT team (http://www.jasypt.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* =============================================================================
*/
package org.jasypt.util.numeric;
import java.math.BigDecimal;
import org.jasypt.encryption.pbe.StandardPBEBigDecimalEncryptor;
/**
* <p>
* Utility class for easily performing normal-strength encryption of
* BigDecimal objects.
* </p>
* <p>
* This class internally holds a {@link StandardPBEBigDecimalEncryptor}
* configured this way:
* <ul>
* <li>Algorithm: <tt>PBEWithMD5AndTripleDES</tt>.</li>
* <li>Key obtention iterations: <tt>1000</tt>.</li>
* </ul>
* </p>
* <p>
* The required steps to use it are:
* <ol>
* <li>Create an instance (using <tt>new</tt>).</li>
* <li>Set a password (using <tt>{@link #setPassword(String)}</tt> or
* <tt>{@link #setPasswordCharArray(char[])}</tt>).</li>
* <li>Perform the desired <tt>{@link #encrypt(BigDecimal)}</tt> or
* <tt>{@link #decrypt(BigDecimal)}</tt> operations.</li>
* </ol>
* </p>
* <p>
* This class is <i>thread-safe</i>.
* </p>
*
* @since 1.2
*
* @author Daniel Fernández
*
*/
public final class StrongDecimalNumberEncryptor implements DecimalNumberEncryptor {
// The internal encryptor
private final StandardPBEBigDecimalEncryptor encryptor;
/**
* Creates a new instance of <tt>StrongDecimalNumberEncryptor</tt>.
*/
public StrongDecimalNumberEncryptor() {
super();
this.encryptor = new StandardPBEBigDecimalEncryptor();
this.encryptor.setAlgorithm("PBEWithMD5AndTripleDES");
}
/**
* Sets a password.
*
* @param password the password to be set.
*/
public void setPassword(final String password) {
this.encryptor.setPassword(password);
}
/**
* Sets a password, as a char[].
*
* @since 1.8
* @param password the password to be set.
*/
public void setPasswordCharArray(final char[] password) {
this.encryptor.setPasswordCharArray(password);
}
/**
* Encrypts a number
*
* @param number the number to be encrypted.
* @see StandardPBEBigDecimalEncryptor#encrypt(BigDecimal)
*/
public BigDecimal encrypt(final BigDecimal number) {
return this.encryptor.encrypt(number);
}
/**
* Decrypts a number.
*
* @param encryptedNumber the number to be decrypted.
* @see StandardPBEBigDecimalEncryptor#decrypt(BigDecimal)
*/
public BigDecimal decrypt(final BigDecimal encryptedNumber) {
return this.encryptor.decrypt(encryptedNumber);
}
}