## org.jgroups.auth
Class MD5Token

    java.lang.Object
      org.jgroups.auth.AuthToken
          org.jgroups.auth.MD5Token

All Implemented Interfaces:
  java.io.Serializable, Streamable

    public class MD5Token

extends AuthToken

This is an example of using a preshared token that is encrypted using an MD5/SHA hash for authentication purposes. All members of the group have to have the same string value in the JGroups config.

Configuration parameters for this example are shown below:

- token_hash (required) = MD5(default)/SHA
- auth_value (required) = the string to encrypt

Author:
  Chris Mills
See Also:
  `AuthToken`, Serialized Form

Field Summary

Fields inherited from class org.jgroups.auth.AuthToken
`auth, log`

Constructor Summary
`MD5Token()`
`MD5Token(java.lang.String authvalue)`
`MD5Token(java.lang.String authvalue, java.lang.String hash_type)`

Method Summary
`boolean` `authenticate(AuthToken token, Message msg)` This method should be implemented to perform the actual authentication of joining members.
`java.lang.String` `getAuthValue()`
`java.lang.String` `getHashType()`
`java.lang.String` `getName()` Used to return the full package and class name of the implementation.
`void` `readFrom(java.io.DataInputStream in)` Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed
`void` `setAuthValue(java.lang.String auth_value)`
`void` `setHashType(java.lang.String hash_type)`
`void` `writeTo(java.io.DataOutputStream out)` Write the entire state of the current object (including superclasses) to outstream.

Methods inherited from class org.jgroups.auth.AuthToken
`init, setAuth`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### MD5Token

    public MD5Token()

### MD5Token

    public MD5Token(java.lang.String authvalue)

### MD5Token

    public MD5Token(java.lang.String authvalue,
                    java.lang.String hash_type)

Method Detail

### getHashType

    public java.lang.String getHashType()

### setHashType

    public void setHashType(java.lang.String hash_type)

### getAuthValue

    public java.lang.String getAuthValue()

### setAuthValue

    public void setAuthValue(java.lang.String auth_value)

### getName

    public java.lang.String getName()

  Description copied from class: `AuthToken`
  Used to return the full package and class name of the implementation. This is used by the AUTH protocol to create an instance of the implementation.

  Specified by:
    `getName` in class `AuthToken`
  Returns:
    a java.lang.String object of the package and class name

### authenticate

    public boolean authenticate(AuthToken token,
                                Message msg)

  Description copied from class: `AuthToken`
  This method should be implemented to perform the actual authentication of joining members.

  Specified by:
    `authenticate` in class `AuthToken`
  Parameters:
    `token` - the token sent by the joiner
    `msg` - the Message object containing the actual JOIN_REQ
  Returns:
    true if authenticaion passed or false if it failed.

### writeTo

    public void writeTo(java.io.DataOutputStream out)
                 throws java.io.IOException

  Description copied from interface: `Streamable`
  Write the entire state of the current object (including superclasses) to outstream. Note that the output stream must not be closed

  Throws:
    `java.io.IOException`

### readFrom

    public void readFrom(java.io.DataInputStream in)
                  throws java.io.IOException,
                         java.lang.IllegalAccessException,
                         java.lang.InstantiationException

  Description copied from interface: `Streamable`
  Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed

  Throws:
    `java.io.IOException`
    `java.lang.IllegalAccessException`
    `java.lang.InstantiationException`

Copyright © 1998-2009 Bela Ban / Red Hat. All Rights Reserved.