SshDssKeyPair


1   /*
2    *  SSL-Explorer
3    *
4    *  Copyright (C) 2003-2006 3SP LTD. All Rights Reserved
5    *
6    *  This program is free software; you can redistribute it and/or
7    *  modify it under the terms of the GNU General Public License
8    *  as published by the Free Software Foundation; either version 2 of
9    *  the License, or (at your option) any later version.
10   *  This program is distributed in the hope that it will be useful,
11   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   *  GNU General Public License for more details.
14   *
15   *  You should have received a copy of the GNU General Public
16   *  License along with this program; if not, write to the Free Software
17   *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18   */
19              
20  package com.sslexplorer.security.pki.dsa;
21  
22  import java.security.KeyPair  ;
23  import java.security.KeyPairGenerator  ;
24  import java.security.NoSuchAlgorithmException  ;
25  import java.security.interfaces.DSAPrivateKey  ;
26  import java.security.interfaces.DSAPublicKey  ;
27  
28  import com.sslexplorer.security.pki.InvalidKeyException;
29  import com.sslexplorer.security.pki.SshKeyPair;
30  import com.sslexplorer.security.pki.SshPrivateKey;
31  import com.sslexplorer.security.pki.SshPublicKey;
32  import com.sslexplorer.security.pki.Utils;
33  
34  
35  /**
36   *
37   *
38   * @author $author$
39   */
40  public class SshDssKeyPair extends SshKeyPair {
41      /**
42       *
43       *
44       * @param encoded
45       *
46       * @return
47       *
48       * @throws InvalidKeyException
49       */
50      public SshPrivateKey decodePrivateKey(byte[] encoded)
51          throws InvalidKeyException {
52          return new SshDssPrivateKey(encoded);
53      }
54  
55      /**
56       *
57       *
58       * @param encoded
59       *
60       * @return
61       *
62       * @throws InvalidKeyException
63       */
64      public SshPublicKey decodePublicKey(byte[] encoded)
65          throws InvalidKeyException {
66          return new SshDssPublicKey(encoded);
67      }
68  
69      /**
70       *
71       *
72       * @param bits
73       */
74      public void generate(int bits) {
75          try {
76              // Initialize the generator
77              KeyPairGenerator   keyGen = KeyPairGenerator.getInstance("DSA");
78              keyGen.initialize(bits, Utils.getRND());
79  
80              KeyPair   pair = keyGen.generateKeyPair();
81  
82              // Get the keys
83              DSAPrivateKey   prvKey = (DSAPrivateKey  ) pair.getPrivate();
84              DSAPublicKey   pubKey = (DSAPublicKey  ) pair.getPublic();
85  
86              // Set the private key (the public is automatically generated)
87              setPrivateKey(new SshDssPrivateKey(prvKey));
88          } catch (NoSuchAlgorithmException   nsae) {
89          }
90      }
91  }
92
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