won.cryptography.rdfsign

Class WonAssembler

java.lang.Object

won.cryptography.rdfsign.WonAssembler

public class WonAssembler
extends java.lang.Object

Created by ypanchenko on 08.07.2014.

A utility class for assembling the calculated signature inside the GraphCollection into the original Dataset; for removing signature graphs from a Dataset.

Constructor Summary

Constructors

Constructor and Description
WonAssembler()

Method Summary

Modifier and Type	Method and Description
static void	assemble(de.uni_koblenz.aggrimm.icp.crypto.sign.graph.GraphCollection namedSignedGraph, org.apache.jena.query.Dataset graphOrigin) Deprecated.
static void	assemble(de.uni_koblenz.aggrimm.icp.crypto.sign.graph.GraphCollection namedSignedGraph, org.apache.jena.query.Dataset graphOrigin, java.lang.String sigGraphURI) Assumes that namedSignedGraph is GraphCollection containing exactly one named graph that is part of the Dataset graphOrigin, and that for this named graph the signature is already calculated inside the GraphCollection internally (i.e.
static void	removeSignatureGraphs(org.apache.jena.query.Dataset dataset) Removes signature graphs from the Dataset.

Methods inherited from class java.lang.Object

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

Constructor Detail

WonAssembler

public WonAssembler()

Method Detail

assemble

@Deprecated
public static void assemble(de.uni_koblenz.aggrimm.icp.crypto.sign.graph.GraphCollection namedSignedGraph,
                                        org.apache.jena.query.Dataset graphOrigin)
                                 throws java.lang.Exception

Deprecated.

Assumes that namedSignedGraph is GraphCollection containing exactly one named graph that is part of the Dataset graphOrigin, and that for this named graph the signature is already calculated inside the GraphCollection internally (i.e. an Algorithm's methods canonicalize(namedSignedGraph), postCanonicalize(namedSignedGraph), hash(namedSignedGraph, envHashAlgorithm), postHash(namedSignedGraph), sign(namedSignedGraph, privateKey) have already been applied. The method assembles the signature from provided GraphCollection into the origin Dataset by putting signature triples inside the default graph of the Dataset. Intended for the use by WonSigner.

Parameters:

namedSignedGraph - GraphCollection containing one named graph with its calculated signature

graphOrigin - Dataset that contains the graph that has was used to construct the namedSignedGraph

Throws:

java.lang.Exception

assemble

public static void assemble(de.uni_koblenz.aggrimm.icp.crypto.sign.graph.GraphCollection namedSignedGraph,
                            org.apache.jena.query.Dataset graphOrigin,
                            java.lang.String sigGraphURI)
                     throws java.lang.Exception

Assumes that namedSignedGraph is GraphCollection containing exactly one named graph that is part of the Dataset graphOrigin, and that for this named graph the signature is already calculated inside the GraphCollection internally (i.e. an Algorithm's methods canonicalize(namedSignedGraph), postCanonicalize(namedSignedGraph), hash(namedSignedGraph, envHashAlgorithm), postHash(namedSignedGraph), sign(namedSignedGraph, privateKey) have already been applied. The method assembles the signature from provided GraphCollection into the origin Dataset by putting signature triples inside the named graph of the Dataset. Intended for the use by WonSigner.

Parameters:

namedSignedGraph - GraphCollection containing one named graph with its calculated signature

graphOrigin - Dataset that contains the graph that has was used to construct the namedSignedGraph

sigGraphURI - the name (URI) of the graph that should be assigned to the signature graph

Throws:

java.lang.Exception

removeSignatureGraphs

public static void removeSignatureGraphs(org.apache.jena.query.Dataset dataset)

Removes signature graphs from the Dataset. Can be useful to use after verification is done, when the signatures are no longer required for further actions on the signed data of the Dataset.

Parameters:

dataset - from which graphs representing signatures have to be removed