Source Code Cross Referenced for MessageDigestPasswordEncoder.java in  » Security » acegi-security » org » acegisecurity » providers » encoding » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » Security » acegi security » org.acegisecurity.providers.encoding 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package org.acegisecurity.providers.encoding;
002:
003:        import org.apache.commons.codec.binary.Base64;
004:        import org.apache.commons.codec.binary.Hex;
005:
006:        import java.security.MessageDigest;
007:        import java.security.NoSuchAlgorithmException;
008:
009:        /**
010:         * Base for digest password encoders.
011:         * <p>This class can be used stand-alone, or one of the subclasses can be used for compatiblity and convenience.
012:         * When using this class directly you must specify a
013:         * <a href="http://java.sun.com/j2se/1.4.2/docs/guide/security/CryptoSpec.html#AppA">
014:         * Message Digest Algorithm</a> to use as a constructor arg</p>
015:         *
016:         * <p>The encoded password hash is normally returned as Hex (32 char) version of the hash bytes.
017:         * Setting the <tt>encodeHashAsBase64</tt> property to <tt>true</tt> will cause the encoded pass to be returned
018:         * as Base64 text, which will consume 24 characters.
019:         * See {@link BaseDigestPasswordEncoder#setEncodeHashAsBase64(boolean)}
020:         * </p>
021:         * <p>
022:         * This PasswordEncoder can be used directly as in the following example:<br/>
023:         * <pre>
024:         * &lt;bean id="passwordEncoder" class="org.acegisecurity.providers.encoding.MessageDigestPasswordEncoder"&gt;
025:         *     &lt;constructor-arg value="MD5"/&gt;
026:         * &lt;/bean&gt;
027:         * </pre>
028:         * </p>
029:         *
030:         * @author Ray Krueger
031:         * @since 1.0.1
032:         */
033:        public class MessageDigestPasswordEncoder extends
034:                BaseDigestPasswordEncoder {
035:
036:            private final String algorithm;
037:
038:            /**
039:             * The digest algorithm to use
040:             * Supports the named <a href="http://java.sun.com/j2se/1.4.2/docs/guide/security/CryptoSpec.html#AppA">
041:             * Message Digest Algorithms</a> in the Java environment.
042:             *
043:             * @param algorithm
044:             */
045:            public MessageDigestPasswordEncoder(String algorithm) {
046:                this (algorithm, false);
047:            }
048:
049:            /**
050:             * Convenience constructor for specifying the algorithm and whether or not to enable base64 encoding
051:             *
052:             * @param algorithm
053:             * @param encodeHashAsBase64
054:             * @throws IllegalArgumentException if an unknown
055:             */
056:            public MessageDigestPasswordEncoder(String algorithm,
057:                    boolean encodeHashAsBase64) throws IllegalArgumentException {
058:                this .algorithm = algorithm;
059:                setEncodeHashAsBase64(encodeHashAsBase64);
060:                //Validity Check
061:                getMessageDigest();
062:            }
063:
064:            /**
065:             * Encodes the rawPass using a MessageDigest.
066:             * If a salt is specified it will be merged with the password before encoding.
067:             *
068:             * @param rawPass The plain text password
069:             * @param salt The salt to sprinkle
070:             * @return Hex string of password digest (or base64 encoded string if encodeHashAsBase64 is enabled.
071:             */
072:            public String encodePassword(String rawPass, Object salt) {
073:                String saltedPass = mergePasswordAndSalt(rawPass, salt, false);
074:
075:                MessageDigest messageDigest = getMessageDigest();
076:
077:                byte[] digest = messageDigest.digest(saltedPass.getBytes());
078:
079:                if (getEncodeHashAsBase64()) {
080:                    return new String(Base64.encodeBase64(digest));
081:                } else {
082:                    return new String(Hex.encodeHex(digest));
083:                }
084:            }
085:
086:            /**
087:             * Get a MessageDigest instance for the given algorithm.
088:             * Throws an IllegalArgumentException if <i>algorithm</i> is unknown
089:             *
090:             * @return MessageDigest instance
091:             * @throws IllegalArgumentException if NoSuchAlgorithmException is thrown
092:             */
093:            protected final MessageDigest getMessageDigest()
094:                    throws IllegalArgumentException {
095:                try {
096:                    return MessageDigest.getInstance(algorithm);
097:                } catch (NoSuchAlgorithmException e) {
098:                    throw new IllegalArgumentException("No such algorithm ["
099:                            + algorithm + "]");
100:                }
101:            }
102:
103:            /**
104:             * Takes a previously encoded password and compares it with a rawpassword after mixing in the salt and
105:             * encoding that value
106:             *
107:             * @param encPass previously encoded password
108:             * @param rawPass plain text password
109:             * @param salt salt to mix into password
110:             * @return true or false
111:             */
112:            public boolean isPasswordValid(String encPass, String rawPass,
113:                    Object salt) {
114:                String pass1 = "" + encPass;
115:                String pass2 = encodePassword(rawPass, salt);
116:
117:                return pass1.equals(pass2);
118:            }
119:
120:            public String getAlgorithm() {
121:                return algorithm;
122:            }
123:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.