org.wildfly.security.evidence.PasswordGuessEvidence Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source.
* Copyright 2015 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.wildfly.security.evidence;
import static org.wildfly.common.Assert.checkNotNullParam;
import java.util.Arrays;
import javax.security.auth.Destroyable;
/**
* A piece of evidence that is comprised of a password guess.
*/
public final class PasswordGuessEvidence implements Evidence, Destroyable {
private final char[] guess;
private boolean destroyed;
/**
* Construct a new instance.
*
* @param guess the non {@code null} password guess
*/
public PasswordGuessEvidence(final char[] guess) {
this.guess = checkNotNullParam("guess", guess);
}
/**
* Get the password guess.
*
* @return the password guess
*/
public char[] getGuess() {
return guess;
}
public void destroy() {
if (! destroyed) {
destroyed = true;
Arrays.fill(guess, '\0');
}
}
public boolean isDestroyed() {
return destroyed;
}
}