Coverage report

  %line %branch
org.apache.turbine.services.crypto.provider.UnixCrypt
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 1  
 package org.apache.turbine.services.crypto.provider;
 2  
 
 3  
 /*
 4  
  * Copyright 2001-2005 The Apache Software Foundation.
 5  
  *
 6  
  * Licensed under the Apache License, Version 2.0 (the "License")
 7  
  * you may not use this file except in compliance with the License.
 8  
  * You may obtain a copy of the License at
 9  
  *
 10  
  *     http://www.apache.org/licenses/LICENSE-2.0
 11  
  *
 12  
  * Unless required by applicable law or agreed to in writing, software
 13  
  * distributed under the License is distributed on an "AS IS" BASIS,
 14  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15  
  * See the License for the specific language governing permissions and
 16  
  * limitations under the License.
 17  
  */
 18  
 
 19  
 import org.apache.turbine.services.crypto.CryptoAlgorithm;
 20  
 
 21  
 /**
 22  
  * Implements Standard Unix crypt(3) for use with the Crypto Service.
 23  
  *
 24  
  * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
 25  
  * @version $Id: UnixCrypt.java 264148 2005-08-29 14:21:04Z henning $
 26  
  */
 27  
 public class UnixCrypt
 28  
         implements CryptoAlgorithm
 29  
 {
 30  
 
 31  
     /** The seed to use */
 32  2
     private String seed = null;
 33  
 
 34  
     /** standard Unix crypt chars (64) */
 35  2
     private static final char[] SALT_CHARS =
 36  
             (("abcdefghijklmnopqrstuvwxyz"
 37  
             + "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789./").toCharArray());
 38  
 
 39  
     /**
 40  
      * C'tor
 41  
      */
 42  
     public UnixCrypt()
 43  2
     {
 44  2
     }
 45  
 
 46  
     /**
 47  
      * This class never uses anything but
 48  
      * UnixCrypt, so it is just a dummy
 49  
      * (Fixme: Should we throw an exception if
 50  
      * something is requested that we don't support?
 51  
      *
 52  
      * @param cipher    Cipher (ignored)
 53  
      */
 54  
     public void setCipher(String cipher)
 55  
     {
 56  
         /* dummy */
 57  2
     }
 58  
 
 59  
     /**
 60  
      * Setting the seed for the UnixCrypt
 61  
      * algorithm. If a null value is supplied,
 62  
      * or no seed is set, then a random seed is used.
 63  
      *
 64  
      * @param seed     The seed value to use.
 65  
      */
 66  
     public void setSeed(String seed)
 67  
     {
 68  6
         this.seed = seed;
 69  6
     }
 70  
 
 71  
     /**
 72  
      * encrypt the supplied string with the requested cipher
 73  
      *
 74  
      * @param value       The value to be encrypted
 75  
      * @return The encrypted value
 76  
      * @throws Exception An Exception of the underlying implementation.
 77  
      */
 78  
     public String encrypt(String value)
 79  
             throws Exception
 80  
     {
 81  6
         if (seed == null)
 82  
         {
 83  2
             java.util.Random randomGenerator = new java.util.Random();
 84  2
             int numSaltChars = SALT_CHARS.length;
 85  
 
 86  2
             seed = (new StringBuffer())
 87  
                     .append(SALT_CHARS[Math.abs(randomGenerator.nextInt())
 88  
                     % numSaltChars])
 89  
                     .append(SALT_CHARS[Math.abs(randomGenerator.nextInt())
 90  
                     % numSaltChars])
 91  
                     .toString();
 92  
         }
 93  
 
 94  
         /* UnixCrypt seems to be a really widespread name... */
 95  6
         return new cryptix.tools.UnixCrypt(seed).crypt(value);
 96  
     }
 97  
 
 98  
 }

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