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org.apache.turbine.services.crypto.provider.OldJavaCrypt |
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1 | package org.apache.turbine.services.crypto.provider; |
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2 | ||
3 | /* |
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4 | * Copyright 2001-2005 The Apache Software Foundation. |
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5 | * |
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6 | * Licensed under the Apache License, Version 2.0 (the "License") |
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7 | * you may not use this file except in compliance with the License. |
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8 | * You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | ||
19 | import java.io.ByteArrayOutputStream; |
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20 | import java.io.OutputStream; |
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21 | ||
22 | import java.security.MessageDigest; |
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23 | ||
24 | import javax.mail.internet.MimeUtility; |
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25 | ||
26 | import org.apache.turbine.services.crypto.CryptoAlgorithm; |
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27 | ||
28 | /** |
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29 | * This is the Message Digest Implementation of Turbine 2.1. It does |
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30 | * not pad the Base64 encryption of the Message Digests correctly but |
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31 | * truncates after 20 chars. This leads to interoperability problems |
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32 | * if you want to use e.g. database columns between two languages. |
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33 | * |
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34 | * If you upgrade an application from Turbine 2.1 and have already used |
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35 | * the Security Service with encrypted passwords and no way to rebuild |
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36 | * your databases, use this provider. It is bug-compatible. |
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37 | * |
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38 | * DO NOT USE THIS PROVIDER FOR ANY NEW APPLICATION! |
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39 | * |
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40 | * Nevertheless it can be used as the default crypto algorithm . |
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41 | * |
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42 | * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a> |
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43 | * @version $Id: OldJavaCrypt.java 264148 2005-08-29 14:21:04Z henning $ |
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44 | */ |
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45 | public class OldJavaCrypt |
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46 | implements CryptoAlgorithm |
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47 | { |
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48 | ||
49 | /** The default cipher */ |
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50 | public static final String DEFAULT_CIPHER = "SHA"; |
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51 | ||
52 | /** The cipher to use for encryption */ |
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53 | 4 | private String cipher = null; |
54 | ||
55 | /** |
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56 | * C'tor |
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57 | */ |
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58 | public OldJavaCrypt() |
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59 | 4 | { |
60 | 4 | this.cipher = DEFAULT_CIPHER; |
61 | 4 | } |
62 | ||
63 | /** |
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64 | * Setting the actual cipher requested. If not |
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65 | * called, then the default cipher (SHA) is used. |
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66 | * |
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67 | * This will never throw an error even if there is no |
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68 | * provider for this cipher. The error will be thrown |
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69 | * by encrypt() (Fixme?) |
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70 | * |
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71 | * @param cipher The cipher to use. |
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72 | */ |
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73 | public void setCipher(String cipher) |
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74 | { |
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75 | 8 | this.cipher = cipher; |
76 | 8 | } |
77 | ||
78 | /** |
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79 | * This class never uses a seed, so this is |
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80 | * just a dummy. |
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81 | * |
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82 | * @param seed Seed (ignored) |
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83 | */ |
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84 | public void setSeed(String seed) |
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85 | { |
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86 | /* dummy */ |
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87 | 0 | } |
88 | ||
89 | /** |
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90 | * Encrypt the supplied string with the requested cipher |
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91 | * |
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92 | * @param value The value to be encrypted |
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93 | * @return The encrypted value |
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94 | * @throws Exception An Exception of the underlying implementation. |
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95 | */ |
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96 | public String encrypt(String value) |
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97 | throws Exception |
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98 | { |
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99 | 4 | MessageDigest md = MessageDigest.getInstance(cipher); |
100 | ||
101 | // We need to use unicode here, to be independent of platform's |
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102 | // default encoding. Thanks to SGawin for spotting this. |
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103 | ||
104 | 4 | byte[] digest = md.digest(value.getBytes("UTF-8")); |
105 | 4 | ByteArrayOutputStream bas = |
106 | new ByteArrayOutputStream(digest.length + digest.length / 3 + 1); |
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107 | 4 | OutputStream encodedStream = MimeUtility.encode(bas, "base64"); |
108 | 4 | encodedStream.write(digest); |
109 | 4 | return bas.toString(); |
110 | } |
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111 | ||
112 | } |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |