/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.shiro.authc.credential;
import org.apache.shiro.crypto.hash.AbstractHash;
import org.apache.shiro.crypto.hash.Hash;
import org.apache.shiro.crypto.hash.Md5Hash;
/**
* <tt>HashedCredentialsMatcher</tt> implementation that expects the stored <tt>AuthenticationInfo</tt> credentials to be
* MD5 hashed.
*
* <p><b>Note:</b> <a href="http://en.wikipedia.org/wiki/MD5">MD5</a> and
* <a href="http://en.wikipedia.org/wiki/SHA_hash_functions">SHA-1</a> algorithms are now known to be vulnerable to
* compromise and/or collisions (read the linked pages for more). While most applications are ok with either of these
* two, if your application mandates high security, use the SHA-256 (or higher) hashing algorithms and their
* supporting <code>CredentialsMatcher</code> implementations.</p>
*
* @author Les Hazlewood
* @since 0.9
*/
public class Md5CredentialsMatcher extends HashedCredentialsMatcher {
/**
* Creates a new <em>uninitialized</em> {@link Md5Hash Md5Hash} instance, without it's byte array set.
*
* @return a new <em>uninitialized</em> {@link Md5Hash Md5Hash} instance, without it's byte array set.
*/
protected AbstractHash newHashInstance() {
return new Md5Hash();
}
/**
* This implementation merely returns
* <code>new {@link Md5Hash#Md5Hash(Object, Object, int) Md5Hash(credentials,salt,hashIterations)}</code>.
*/
protected Hash hashProvidedCredentials(Object credentials, Object salt, int hashIterations) {
return new Md5Hash(credentials, salt, hashIterations);
}
}