diff options
Diffstat (limited to 'mcs/class/System.Security/System.Security.Cryptography.Xml/Signature.cs')
| -rw-r--r-- | mcs/class/System.Security/System.Security.Cryptography.Xml/Signature.cs | 146 |
1 files changed, 146 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..a2aeeb3aee4 --- /dev/null +++ b/mcs/class/System.Security/System.Security.Cryptography.Xml/Signature.cs @@ -0,0 +1,146 @@ +// +// Signature.cs - Signature implementation for XML Signature +// +// Author: +// Sebastien Pouliot (spouliot@motus.com) +// +// (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com) +// + +using System.Collections; +using System.Security.Cryptography; +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; + + 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"); + + XmlDocument document = new XmlDocument (); + XmlElement xel = document.CreateElement (XmlSignature.ElementNames.Signature, XmlSignature.NamespaceURI); + if (id != null) + xel.SetAttribute (XmlSignature.AttributeNames.Id, id); + + XmlNode xn = info.GetXml (); + XmlNode newNode = document.ImportNode (xn, true); + xel.AppendChild (newNode); + + if (signature != null) { + XmlElement sv = document.CreateElement (XmlSignature.ElementNames.SignatureValue, XmlSignature.NamespaceURI); + sv.InnerText = Convert.ToBase64String (signature); + xel.AppendChild (sv); + } + + if (key != null) { + xn = key.GetXml (); + newNode = document.ImportNode (xn, true); + xel.AppendChild (newNode); + } + + if (list.Count > 0) { + foreach (DataObject obj in list) { + xn = obj.GetXml (); + newNode = document.ImportNode (xn, true); + xel.AppendChild (newNode); + } + } + + return xel; + } + + 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 == XmlSignature.ElementNames.Signature) && (value.NamespaceURI == XmlSignature.NamespaceURI)) { + id = GetAttribute (value, XmlSignature.AttributeNames.Id); + + XmlNodeList xnl = value.GetElementsByTagName (XmlSignature.ElementNames.SignedInfo); + if ((xnl != null) && (xnl.Count == 1)) { + info = new SignedInfo (); + info.LoadXml ((XmlElement) xnl[0]); + } + + xnl = value.GetElementsByTagName (XmlSignature.ElementNames.SignatureValue); + if ((xnl != null) && (xnl.Count == 1)) { + signature = Convert.FromBase64String (xnl[0].InnerText); + } + + xnl = value.GetElementsByTagName (XmlSignature.ElementNames.KeyInfo); + if ((xnl != null) && (xnl.Count == 1)) { + key = new KeyInfo (); + key.LoadXml ((XmlElement) xnl[0]); + } + + xnl = value.GetElementsByTagName (XmlSignature.ElementNames.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"); + } + } +}
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