de.uni_koblenz.aggrimm.icp.crypto.sign.graph

Class MSG

java.lang.Object

de.uni_koblenz.aggrimm.icp.crypto.sign.graph.MSG

public class MSG
extends Object

MSG = Minimum self-contained graph A MSG consists of a set of N triples with N>=1 (there should not be any empty MSGs). These triples have in common that they contain the same blank nodes (in subject and/or object position). A MSG can consist of just one triple in case it has no blank nodes or in case it has blank nodes which are not part of any other triple. A set of triples can be split into a set of MSGs using the method NamedGraph.SplitIntoMSGs(). MSGs can have a hash, signature and certificate. MSGs are currently only used by the algorithm of Tummarello. All other algorithms do not split sets of triples into MSGs.

Author:

Peter Schauß

Constructor Summary

Constructors

Constructor and Description
MSG()
MSG(ArrayList<Triple> triples) Create new MSG with a vector of triples in it
MSG(Triple t) Create new MSG with one triple in it

Method Summary

Modifier and Type	Method and Description
void	addTriple(Triple t) Adds a triple to this MSG
void	addTriples(ArrayList<Triple> list) Adds a list of triples to this MSG
boolean	containsTriple(String[] triple) Checks if MSG contains a certain triple (specified by String array with size 3)
boolean	equals(Object o) Checks if this MSG is equal to another MSG
String	getCertificate()
BigInteger	getHash()
String	getSignature()
ArrayList<Triple>	getTriples()
void	setCertificate(String certificate)
void	setHash(BigInteger hash)
void	setSignature(String signature)
void	setTriples(ArrayList<Triple> triples)
String	toString() Converts MSG to a string (used for printing and debugging)

Methods inherited from class java.lang.Object

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

Constructor Detail

MSG

public MSG()

MSG

public MSG(Triple t)

Create new MSG with one triple in it

Parameters:

t - triple which will be in the MSG

MSG

public MSG(ArrayList<Triple> triples)

Create new MSG with a vector of triples in it

Parameters:

triples - vector of triples which will be in the MSG

Method Detail

getTriples

public ArrayList<Triple> getTriples()

setTriples

public void setTriples(ArrayList<Triple> triples)

getHash

public BigInteger getHash()

setHash

public void setHash(BigInteger hash)

getSignature

public String getSignature()

setSignature

public void setSignature(String signature)

getCertificate

public String getCertificate()

setCertificate

public void setCertificate(String certificate)

addTriple

public void addTriple(Triple t)

Adds a triple to this MSG

Parameters:

t - triple to add

addTriples

public void addTriples(ArrayList<Triple> list)

Adds a list of triples to this MSG

Parameters:

list - list of triples to add

containsTriple

public boolean containsTriple(String[] triple)

Checks if MSG contains a certain triple (specified by String array with size 3)

Parameters:

triple - triple as string array

Returns:

true if MSG contains this triple, false otherwise

toString

public String toString()

Converts MSG to a string (used for printing and debugging)

Overrides:

toString in class Object

Returns:

string representation

equals

public boolean equals(Object o)

Checks if this MSG is equal to another MSG

Overrides:

equals in class Object

Parameters:

o - MSG to compare with

Returns:

true if equal, false otherwise