public void TestGetDigesterInstance()
{
IDigester dig = pr.GetDigesterInstance("http://www.w3.org/2000/09/xmldsig#sha1", emptyDic);
Assert.IsNotNull(dig, "Digester instance is null");
Assert.IsTrue(dig is Digesters.SHA1Digester, "Digester has incorect type");
}
/// <summary>
/// Creates SignedInfo node according to Xml spec at http://www.w3.org/TR/xmldsig-core/#sec-SignedInfo
/// </summary>
/// <param name="doc">XmlDocument used to create new attribute and nodes</param>
/// <param name="canonicalizer">InstantiationVO containing the instance and
/// property values of the canonicalizer to load</param>
/// <param name="signer">InstantiationVO containing the instance and property
/// values of the signer to load</param>
/// <param name="references">List of references to sign</param>
/// <returns>SignedInfo node according to Xml spec at http://www.w3.org/TR/xmldsig-core/#sec-SignedInfo
/// </returns>
private XmlNode CreateSignedInfoNode(XmlDocument doc, InstantiationVO canonicalizer, InstantiationVO signer,
IList <IReference> references)
{
//Create SignedInfo node
XmlNode signedInfoNode = doc.CreateNode(XmlNodeType.Element, "SignedInfo", null);
//Create CanonicalizationMethod node and add it to SignedInfo node
XmlNode canonMethodNode = CreateCanonicalizationMethodNode(doc, canonicalizer.Key);
signedInfoNode.InnerXml += canonMethodNode.OuterXml;
//Create SignatureMethod node and add it to SignedInfo node
XmlNode signMethodNode = CreateSignatureMethod(doc, signer.Key);
signedInfoNode.InnerXml += signMethodNode.OuterXml;
//Process all the references
foreach (IReference reference in references)
{
//Get instance of reference loader.
IReferenceLoader referenceLoader = null;
switch (reference.Protocol)
{
case "http":
referenceLoader = registry.GetReferenceLoaderInstance("http", emptyDic);
break;
case "soap":
referenceLoader = reference.SoapRefLoader;
break;
}
//Load reference data using the reference loader.
byte[] uriData = referenceLoader.LoadReferenceData(reference.ReferenceURI);
XmlNode dummyNode = doc.CreateElement("dummy");
//Apply Transforms if necessary
if (reference.TransformerInstanceDefinitions.Count > 0)
{
//Create Transforms node
XmlNode transformsNode = doc.CreateNode(XmlNodeType.Element, "Transforms", null);
foreach (InstantiationVO transfInstVO in reference.TransformerInstanceDefinitions)
{
//Get Transformer instance
ITransformer transfInst =
registry.GetTransformerInstance(transfInstVO.Key, transfInstVO.Params);
//Create Transform node and add Algorithm attribute
XmlNode transformNode = doc.CreateNode(XmlNodeType.Element, "Transform", null);
XmlAttribute attr = doc.CreateAttribute("Algorithm");
attr.Value = transfInstVO.Key;
transformNode.Attributes.Append(attr);
//Add Transform node to Transforms node
transformsNode.InnerXml += transformNode.OuterXml;
//Do the transform
uriData = transfInst.Transform(uriData);
}
//Add Transforms node to the dummy node
dummyNode.InnerXml += transformsNode.OuterXml;
}
//Get instance of digester
IDigester digester = registry.GetDigesterInstance(reference.DigesterInstanceDefinition.Key,
reference.DigesterInstanceDefinition.Params);
//Produce a digest for the reference data bytes
byte[] digestedData = digester.Digest(uriData);
//Create Reference node with appropriate data set
XmlNode refNode = CreateReferenceNode(doc, Convert.ToBase64String(digestedData),
reference.ReferenceURI, reference.DigesterInstanceDefinition.Key);
//Add Transforms node to the dummy node
refNode.InnerXml = dummyNode.InnerXml + refNode.InnerXml;
//Add reference node to SignedInfo node
signedInfoNode.InnerXml += refNode.OuterXml;
}
return(signedInfoNode);
}