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| <pre><span class="sourceLineNo">001</span>package org.apache.fulcrum.crypto.provider;<a name="line.1"></a> |
| <span class="sourceLineNo">002</span><a name="line.2"></a> |
| <span class="sourceLineNo">003</span>/*<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * or more contributor license agreements. See the NOTICE file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * distributed with this work for additional information<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * regarding copyright ownership. The ASF licenses this file<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * to you under the Apache License, Version 2.0 (the<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * "License"); you may not use this file except in compliance<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * with the License. You may obtain a copy of the License at<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> *<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * Unless required by applicable law or agreed to in writing,<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * software distributed under the License is distributed on an<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * KIND, either express or implied. See the License for the<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> * specific language governing permissions and limitations<a name="line.18"></a> |
| <span class="sourceLineNo">019</span> * under the License.<a name="line.19"></a> |
| <span class="sourceLineNo">020</span> */<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.Random;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.fulcrum.crypto.CryptoAlgorithm;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>/**<a name="line.26"></a> |
| <span class="sourceLineNo">027</span> * Implements Standard Unix crypt(3) for use with the Crypto Service.<a name="line.27"></a> |
| <span class="sourceLineNo">028</span> *<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a><a name="line.29"></a> |
| <span class="sourceLineNo">030</span> * @version $Id$<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> */<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>public class UnixCrypt implements CryptoAlgorithm <a name="line.32"></a> |
| <span class="sourceLineNo">033</span>{<a name="line.33"></a> |
| <span class="sourceLineNo">034</span><a name="line.34"></a> |
| <span class="sourceLineNo">035</span> /** The seed to use */<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> private String seed = null;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span><a name="line.37"></a> |
| <span class="sourceLineNo">038</span> /** standard Unix crypt chars (64) */<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> private static final char[] SALT_CHARS = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789./"<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> .toCharArray();<a name="line.40"></a> |
| <span class="sourceLineNo">041</span><a name="line.41"></a> |
| <span class="sourceLineNo">042</span> /**<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * Constructor<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> */<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> public UnixCrypt() <a name="line.45"></a> |
| <span class="sourceLineNo">046</span> {<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> }<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span> /**<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * This class never uses anything but UnixCrypt, so it is just a dummy (Fixme:<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * Should we throw an exception if something is requested that we don't support?<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> *<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * @param cipher Cipher (ignored)<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> */<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> public void setCipher(String cipher) <a name="line.55"></a> |
| <span class="sourceLineNo">056</span> {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> /* dummy */<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> }<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> /**<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * Setting the seed for the UnixCrypt algorithm. If a null value is supplied, or<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * no seed is set, then a random seed is used.<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> *<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * @param seed The seed value to use.<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> */<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> public void setSeed(String seed) <a name="line.66"></a> |
| <span class="sourceLineNo">067</span> {<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> this.seed = seed;<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> }<a name="line.69"></a> |
| <span class="sourceLineNo">070</span><a name="line.70"></a> |
| <span class="sourceLineNo">071</span> /**<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * Encrypt the supplied string with the requested cipher<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> *<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * @param value The value to be encrypted<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * @return The encrypted value<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> * @throws Exception An Exception of the underlying implementation.<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> */<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> public String encrypt(String value) throws Exception <a name="line.78"></a> |
| <span class="sourceLineNo">079</span> {<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> if (seed == null) <a name="line.80"></a> |
| <span class="sourceLineNo">081</span> {<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> Random randomGenerator = new Random();<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> int numSaltChars = SALT_CHARS.length;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> StringBuilder sb = new StringBuilder();<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> sb.append(SALT_CHARS[Math.abs(randomGenerator.nextInt() % numSaltChars)])<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> .append(SALT_CHARS[Math.abs(randomGenerator.nextInt() % numSaltChars)]).toString();<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> seed = sb.toString();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> // use commons-codec to do the encryption<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> return org.apache.commons.codec.digest.UnixCrypt.crypt(value, seed);<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> }<a name="line.92"></a> |
| <span class="sourceLineNo">093</span>}<a name="line.93"></a> |
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| </pre> |
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