org.jgroups.auth
Class MD5Token

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

All Implemented Interfaces:

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

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.DataInput 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)
int	size() The size of the marshalled AuthToken
void	writeTo(java.io.DataOutput 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.DataOutput out)
             throws java.lang.Exception

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.lang.Exception

readFrom

public void readFrom(java.io.DataInput in)
              throws java.lang.Exception

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.lang.Exception

size

public int size()

Description copied from class: AuthToken

The size of the marshalled AuthToken

Specified by:

size in class AuthToken