com.sun.mdm.index.util
Class Sigger

java.lang.Object
  com.sun.mdm.index.util.Sigger

All Implemented Interfaces:

java.io.Serializable

public class Sigger

extends java.lang.Object

implements java.io.Serializable

Signature calculator calculates a signature for a given SystemObject. Signature can be calculated using either "MD5" or "SHA" algorithm. This implementation relys on Java 1.4 security features. And requires at least the default provider, or additional registered provider that supports "MD5" or "SHA" MAC algorithm

See Also:

Serialized Form

Constructor Summary

Sigger()
Creates new Sigger

Method Summary

protected byte[]	calculateSignature(java.lang.String algo, ObjectNode omega) calculates the checksum for match fields.
byte[]	calculateSignatureMD5(ObjectNode omega) calculates the signature using MD5 MAC algorithm
byte[]	calculateSignatureSHA(ObjectNode omega) calculates the signature using SHA MAC algorithm
protected void	traverse(ObjectNode obj, java.security.MessageDigest md) Traverse the ObjectNode

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Sigger

public Sigger()

Creates new Sigger

Method Detail

calculateSignature

protected byte[] calculateSignature(java.lang.String algo,
                                    ObjectNode omega)
                             throws SystemObjectException

calculates the checksum for match fields. concatenates each match field value in sorted order by field name

Parameters:

algo - MD5 or SHA

omega - SBR object

Returns:

a byte array containing the checksum

Throws:

SystemObjectException - if accessing the ObjectNode failed

calculateSignatureMD5

public byte[] calculateSignatureMD5(ObjectNode omega)
                             throws SystemObjectException

calculates the signature using MD5 MAC algorithm

Parameters:

omega - input object

Returns:

byte array containing the signature

Throws:

SystemObjectException - if accessing the ObjectNode failed

calculateSignatureSHA

public byte[] calculateSignatureSHA(ObjectNode omega)
                             throws SystemObjectException

calculates the signature using SHA MAC algorithm

Parameters:

omega - input object

Returns:

byte array containing the signature

Throws:

SystemObjectException - if accessing the ObjectNode failed

traverse

protected void traverse(ObjectNode obj,
                        java.security.MessageDigest md)
                 throws SystemObjectException

Traverse the ObjectNode

Parameters:

obj - the ObjectNode to traverse

md - the MessageDigest to use

Throws:

SystemObjectException - if traversing the ObjectNode failed