public static byte[] ComputeValueOfElementList(XadesSignedXml xadesSignedXml, ArrayList elementXpaths)
{
XmlElement signatureElement = xadesSignedXml.GetSignatureElement();
List <XmlAttribute> allNamespaces = xadesSignedXml.GetAllNamespaces(signatureElement);
XmlDocument ownerDocument = signatureElement.OwnerDocument;
XmlNamespaceManager xmlNamespaceManager = new XmlNamespaceManager(ownerDocument.NameTable);
xmlNamespaceManager.AddNamespace("ds", "http://www.w3.org/2000/09/xmldsig#");
xmlNamespaceManager.AddNamespace("xades", "http://uri.etsi.org/01903/v1.3.2#");
using (MemoryStream memoryStream = new MemoryStream())
{
foreach (string elementXpath in elementXpaths)
{
XmlNodeList xmlNodeList = signatureElement.SelectNodes(elementXpath, xmlNamespaceManager);
if (xmlNodeList.Count == 0)
{
throw new CryptographicException("Element " + elementXpath + " not found while calculating hash");
}
foreach (XmlNode item in xmlNodeList)
{
XmlElement xmlElement = (XmlElement)item.Clone();
xmlElement.SetAttribute("xmlns:" + XadesSignedXml.XmlDSigPrefix, "http://www.w3.org/2000/09/xmldsig#");
foreach (XmlAttribute item2 in allNamespaces)
{
xmlElement.SetAttribute(item2.Name, item2.Value);
}
byte[] array = ApplyTransform(xmlElement, new XmlDsigC14NTransform());
memoryStream.Write(array, 0, array.Length);
}
}
return(memoryStream.ToArray());
}
}
/// <summary>
/// Obtiene el valor canonicalizado de los elementos especificados en elementXpaths
/// </summary>
/// <param name="xadesSignedXml"></param>
/// <param name="elementXpaths"></param>
/// <returns></returns>
public static byte[] ComputeValueOfElementList(XadesSignedXml xadesSignedXml, ArrayList elementXpaths)
{
XmlDocument xmlDocument;
XmlNamespaceManager xmlNamespaceManager;
XmlNodeList searchXmlNodeList;
var signatureXmlElement = xadesSignedXml.GetSignatureElement();
var namespaces = xadesSignedXml.GetAllNamespaces(signatureXmlElement);
xmlDocument = signatureXmlElement.OwnerDocument;
xmlNamespaceManager = new XmlNamespaceManager(xmlDocument.NameTable);
xmlNamespaceManager.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl);
xmlNamespaceManager.AddNamespace("xades", XadesSignedXml.XadesNamespaceUri);
using (MemoryStream msResult = new MemoryStream())
{
foreach (string elementXpath in elementXpaths)
{
searchXmlNodeList = signatureXmlElement.SelectNodes(elementXpath, xmlNamespaceManager);
if (searchXmlNodeList.Count == 0)
{
throw new CryptographicException("Element " + elementXpath + " not found while calculating hash");
}
foreach (XmlNode xmlNode in searchXmlNodeList)
{
XmlAttribute dsNamespace = xmlDocument.CreateAttribute("xmlns:" + XadesSignedXml.XmlDSigPrefix);
dsNamespace.Value = XadesSignedXml.XmlDsigNamespaceUrl;
xmlNode.Attributes.Append(dsNamespace);
foreach (var attr in namespaces)
{
XmlAttribute attrNamespace = xmlDocument.CreateAttribute(attr.Name);
attrNamespace.Value = attr.Value;
xmlNode.Attributes.Append(attrNamespace);
}
byte[] canonicalizedElement = ApplyTransform((XmlElement)xmlNode, new XmlDsigC14NTransform());
msResult.Write(canonicalizedElement, 0, canonicalizedElement.Length);
}
}
return(msResult.ToArray());
}
}
