2 // Transform.cs - Transform implementation for XML Signature
5 // Sebastien Pouliot <sebastien@ximian.com>
6 // Atsushi Enomoto <atsushi@ximian.com>
7 // Tim Coleman <tim@timcoleman.com>
9 // (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
10 // Copyright (C) Tim Coleman, 2004
11 // (C) 2004 Novell (http://www.novell.com)
15 // Permission is hereby granted, free of charge, to any person obtaining
16 // a copy of this software and associated documentation files (the
17 // "Software"), to deal in the Software without restriction, including
18 // without limitation the rights to use, copy, modify, merge, publish,
19 // distribute, sublicense, and/or sell copies of the Software, and to
20 // permit persons to whom the Software is furnished to do so, subject to
21 // the following conditions:
23 // The above copyright notice and this permission notice shall be
24 // included in all copies or substantial portions of the Software.
26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 using System
.Collections
;
37 using System
.Runtime
.InteropServices
;
38 using System
.Security
.Policy
;
41 namespace System
.Security
.Cryptography
.Xml
{
43 public abstract class Transform
{
46 private XmlResolver xmlResolver
;
50 // FIXME: enable it after CAS implementation
52 xmlResolver
= new XmlSecureResolver (new XmlUrlResolver (), (Evidence
) new Evidence ());
54 xmlResolver
= new XmlUrlResolver ();
60 public string Algorithm
{
65 public abstract Type
[] InputTypes
{
69 public abstract Type
[] OutputTypes
{
75 public XmlResolver Resolver
{
76 set { xmlResolver = value; }
82 public XmlElement Context
{
83 get { throw new NotImplementedException (); }
84 set { throw new NotImplementedException (); }
88 public Hashtable PropagatedNamespaces
{
89 get { throw new NotImplementedException (); }
90 set { throw new NotImplementedException (); }
94 #endregion // Properties
98 public virtual byte[] GetDigestedOutput (HashAlgorithm hash
)
100 return hash
.ComputeHash ((Stream
) GetOutput (typeof (Stream
)));
104 protected abstract XmlNodeList
GetInnerXml ();
106 public abstract object GetOutput ();
108 public abstract object GetOutput (Type type
);
110 public XmlElement
GetXml ()
112 XmlDocument document
= new XmlDocument ();
113 document
.XmlResolver
= GetResolver ();
114 XmlElement xel
= document
.CreateElement (XmlSignature
.ElementNames
.Transform
, XmlSignature
.NamespaceURI
);
115 xel
.SetAttribute (XmlSignature
.AttributeNames
.Algorithm
, algo
);
116 XmlNodeList xnl
= this.GetInnerXml ();
118 foreach (XmlNode xn
in xnl
) {
119 XmlNode importedNode
= document
.ImportNode (xn
, true);
120 xel
.AppendChild (importedNode
);
126 public abstract void LoadInnerXml (XmlNodeList nodeList
);
128 public abstract void LoadInput (object obj
);
130 internal XmlResolver
GetResolver ()
135 #endregion // Methods