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1
7 package org.jboss.security.plugins;
8
9 import java.io.File  ;
10 import java.io.IOException ;
11 import java.io.RandomAccessFile ;
12 import java.io.ByteArrayOutputStream ;
13
14 import javax.crypto.spec.PBEParameterSpec;
15 import javax.crypto.spec.PBEKeySpec;
16 import javax.crypto.Cipher;
17 import javax.crypto.SecretKeyFactory;
18 import javax.crypto.SecretKey;
19
20 import org.jboss.logging.Logger;
21
22
41 public class FilePassword
42 {
43 private File passwordFile;
44
45 public FilePassword(String file)
46 {
47 passwordFile = new File (file);
48 }
49
50 public char[] toCharArray()
51 throws IOException
52 {
53 RandomAccessFile raf = new RandomAccessFile (passwordFile, "rws");
54 try
55 {
56 char[] password = decode(raf);
57 return password;
58 }
59 catch(Exception e)
60 {
61 Logger log = Logger.getLogger(FilePassword.class);
62 log.error("Failed to decode password file: "+passwordFile, e);
63 throw new IOException (e.getMessage());
64 }
65 }
66
67 static char[] decode(RandomAccessFile passwordFile)
68 throws Exception
69 {
70 byte[] salt = new byte[8];
71 passwordFile.readFully(salt);
72 int count = passwordFile.readInt();
73 ByteArrayOutputStream baos = new ByteArrayOutputStream ();
74 int b;
75 while( (b = passwordFile.read()) >= 0 )
76 baos.write(b);
77 passwordFile.close();
78 byte[] secret = baos.toByteArray();
79
80 PBEParameterSpec cipherSpec = new PBEParameterSpec(salt, count);
81 PBEKeySpec keySpec = new PBEKeySpec("78aac249a60a13d5e882927928043ebb".toCharArray());
82 SecretKeyFactory factory = SecretKeyFactory.getInstance("PBEwithMD5andDES");
83 SecretKey cipherKey = factory.generateSecret(keySpec);
84 Cipher cipher = Cipher.getInstance("PBEwithMD5andDES");
85 cipher.init(Cipher.DECRYPT_MODE, cipherKey, cipherSpec);
86 byte[] decode = cipher.doFinal(secret);
87 return new String (decode, "UTF-8").toCharArray();
88 }
89 static void encode(RandomAccessFile passwordFile, byte[] salt, int count,
90 byte[] secret)
91 throws Exception
92 {
93 PBEParameterSpec cipherSpec = new PBEParameterSpec(salt, count);
94 PBEKeySpec keySpec = new PBEKeySpec("78aac249a60a13d5e882927928043ebb".toCharArray());
95 SecretKeyFactory factory = SecretKeyFactory.getInstance("PBEwithMD5andDES");
96 SecretKey cipherKey = factory.generateSecret(keySpec);
97 Cipher cipher = Cipher.getInstance("PBEwithMD5andDES");
98 cipher.init(Cipher.ENCRYPT_MODE, cipherKey, cipherSpec);
99 byte[] encode = cipher.doFinal(secret);
100 passwordFile.write(salt);
101 passwordFile.writeInt(count);
102 passwordFile.write(encode);
103 passwordFile.close();
104
105 }
106
113 public static void main(String [] args) throws Exception
114 {
115 if( args.length != 4 )
116 {
117 System.err.println(
118 "Write a password in opaque form to a file for use with the FilePassword accessor"
119 +"Usage: FilePassword salt count password password-file"
120 +" salt : an 8 char sequence for PBEKeySpec"
121 +" count : iteration count for PBEKeySpec"
122 +" password : the clear text password to write"
123 +" password-file : the path to the file to write the password to"
124 );
125 }
126 byte[] salt = args[0].substring(0, 8).getBytes();
127 int count = Integer.parseInt(args[1]);
128 byte[] passwordBytes = args[2].getBytes("UTF-8");
129 RandomAccessFile passwordFile = new RandomAccessFile (args[3], "rws");
130 encode(passwordFile, salt, count, passwordBytes);
131 }
132 }
133 |
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