1 files changed, 171 insertions, 0 deletions
diff --git a/mcs/class/System.Security/System.Security.Cryptography.Xml/Signature.cs b/mcs/class/System.Security/System.Security.Cryptography.Xml/Signature.cs
new file mode 100644
index 00000000000..1712a31f5b1
--- /dev/null
+++ b/mcs/class/System.Security/System.Security.Cryptography.Xml/Signature.cs
@@ -0,0 +1,171 @@
+//
+// Signature.cs - Signature implementation for XML Signature
+//
+// Author:
+//	Sebastien Pouliot (spouliot@motus.com)
+//
+// (C) 2002 Motus Technologies Inc. (http://www.motus.com)
+//
+
+using System.Collections;
+using System.Security.Cryptography;
+using System.Text;
+using System.Xml;
+
+namespace System.Security.Cryptography.Xml {
+
+public class Signature {
+
+	private ArrayList list;
+	private SignedInfo info;
+	private KeyInfo key;
+	private string id;
+	private byte[] signature;
+
+	static private string xmldsig = "http://www.w3.org/2000/09/xmldsig#";
+
+	public Signature() 
+	{
+		list = new ArrayList ();
+	}
+
+	public string Id {
+		get { return id; }
+		set { id = value; }
+	}
+
+	public KeyInfo KeyInfo {
+		get { return key; }
+		set { key = value; }
+	}
+
+	public IList ObjectList {
+		get { return list; }
+		set { list = ArrayList.Adapter (value); }
+	}
+
+	public byte[] SignatureValue {
+		get { return signature; }
+		set { signature = value; }
+	}
+
+	public SignedInfo SignedInfo {
+		get { return info; }
+		set { info = value; }
+	}
+
+	public void AddObject (DataObject dataObject) 
+	{
+		list.Add (dataObject);
+	}
+
+	public XmlElement GetXml () 
+	{
+		if (info == null)
+			throw new CryptographicException ("SignedInfo");
+		if (signature == null)
+			throw new CryptographicException ("SignatureValue");
+
+		StringBuilder sb = new StringBuilder ();
+		sb.Append ("<Signature");
+		if (id != null) {
+			sb.Append (" Id = \"");
+			sb.Append (id);
+			sb.Append ("\"");
+		}
+		sb.Append (" xmlns=\"");
+		sb.Append (xmldsig);
+/*		if (info != null) {
+			sb.Append ("\">");
+			sb.Append (info.GetXml ().OuterXml);
+			sb.Append ("</Signature>");
+		}
+		else*/
+			sb.Append ("\" />");
+
+		XmlDocument doc = new XmlDocument ();
+		doc.LoadXml (sb.ToString ());
+
+		XmlNode xn = null;
+		XmlNode newNode = null;
+
+		if (info != null) {
+			// this adds the xmlns=xmldsig
+			xn = info.GetXml ();
+			newNode = doc.ImportNode (xn, true);
+			doc.DocumentElement.AppendChild (newNode);
+		}
+
+		if (signature != null) {
+			XmlElement sv = doc.CreateElement ("SignatureValue", xmldsig);
+			sv.InnerText = Convert.ToBase64String (signature);
+			doc.DocumentElement.AppendChild (sv);
+		}
+
+		if (key != null) {
+			xn = key.GetXml ();
+			newNode = doc.ImportNode (xn, true);
+			doc.DocumentElement.AppendChild (newNode);
+		}
+
+		if (list.Count > 0) {
+			foreach (DataObject obj in list) {
+				xn = obj.GetXml ();
+				newNode = doc.ImportNode (xn, true);
+				doc.DocumentElement.AppendChild (newNode);
+			}
+		}
+
+		return doc.DocumentElement;
+	}
+
+	private string GetAttribute (XmlElement xel, string attribute) 
+	{
+		XmlAttribute xa = xel.Attributes [attribute];
+		return ((xa != null) ? xa.InnerText : null);
+	}
+
+	public void LoadXml (XmlElement value) 
+	{
+		if (value == null)
+			throw new ArgumentNullException ("value");
+
+		if ((value.LocalName == "Signature") && (value.NamespaceURI == xmldsig)) {
+			id = GetAttribute (value, "Id");
+
+			XmlNodeList xnl = value.GetElementsByTagName ("SignedInfo");
+			if ((xnl != null) && (xnl.Count == 1)) {
+				info = new SignedInfo ();
+				info.LoadXml ((XmlElement) xnl[0]);
+			}
+
+			xnl = value.GetElementsByTagName ("SignatureValue");
+			if ((xnl != null) && (xnl.Count == 1)) {
+				signature = Convert.FromBase64String (xnl[0].InnerText);
+			}
+
+			xnl = value.GetElementsByTagName ("KeyInfo");
+			if ((xnl != null) && (xnl.Count == 1)) {
+				key = new KeyInfo ();
+				key.LoadXml ((XmlElement) xnl[0]);
+			}
+
+			xnl = value.GetElementsByTagName ("Object");
+			if ((xnl != null) && (xnl.Count > 0)) {
+				foreach (XmlNode xn in xnl) {
+					DataObject obj = new DataObject ();
+					obj.LoadXml ((XmlElement) xn);
+					AddObject (obj);
+				}
+			}
+		}
+
+		// if invalid
+		if (info == null)
+			throw new CryptographicException ("SignedInfo");
+		if (signature == null)
+			throw new CryptographicException ("SignatureValue");
+	}
+}
+
+}
+\ No newline at end of file