mcs/class/System.Security/System.Security.Cryptography.Xml/EncryptionProperty.cs

   1 //
   2 // EncryptionProperty.cs - EncryptionProperty implementation for XML Encryption
   3 // http://www.w3.org/2001/04/xmlenc#sec-EncryptionProperty
   4 //
   5 // Author:
   6 //      Tim Coleman (tim@timcoleman.com)
   7 //
   8 // Copyright (C) Tim Coleman, 2004
   9
  10 #if NET_1_2
  11
  12 using System.Xml;
  13
  14 namespace System.Security.Cryptography.Xml {
  15         public sealed class EncryptionProperty {
  16
  17                 #region Fields
  18
  19                 XmlElement elemProp;
  20                 string id;
  21                 string target;
  22
  23                 #endregion // Fields
  24
  25                 #region Constructors
  26
  27                 public EncryptionProperty ()
  28                 {
  29                 }
  30
  31                 public EncryptionProperty (XmlElement elemProp)
  32                 {
  33                         LoadXml (elemProp);
  34                 }
  35
  36                 #endregion // Constructors
  37
  38                 #region Properties
  39
  40                 public string Id {
  41                         get { return id; }
  42                 }
  43
  44                 public XmlElement PropertyElement {
  45                         get { return elemProp; }
  46                         set { LoadXml (value); }
  47                 }
  48
  49                 public string Target {
  50                         get { return target; }
  51                 }
  52
  53                 #endregion // Properties
  54
  55                 #region Methods
  56
  57                 public XmlElement GetXml ()
  58                 {
  59                         return GetXml (new XmlDocument ());
  60                 }
  61
  62                 internal XmlElement GetXml (XmlDocument document)
  63                 {
  64                         XmlElement xel = document.CreateElement (XmlEncryption.ElementNames.EncryptionProperty, EncryptedXml.XmlEncNamespaceUrl);
  65
  66                         if (Id != null)
  67                                 xel.SetAttribute (XmlEncryption.AttributeNames.Id, Id);
  68                         if (Target != null)
  69                                 xel.SetAttribute (XmlEncryption.AttributeNames.Target, Target);
  70
  71                         return xel;
  72                 }
  73
  74                 public void LoadXml (XmlElement value)
  75                 {
  76                         if (value == null)
  77                                 throw new ArgumentNullException ("value");
  78
  79                         if ((value.LocalName != XmlEncryption.ElementNames.EncryptionProperty) || (value.NamespaceURI != EncryptedXml.XmlEncNamespaceUrl))
  80                                 throw new CryptographicException ("Malformed EncryptionProperty element.");
  81                         else {
  82                                 if (value.HasAttribute (XmlEncryption.AttributeNames.Id))
  83                                         this.id = value.Attributes [XmlEncryption.AttributeNames.Id].Value;
  84                                 if (value.HasAttribute (XmlEncryption.AttributeNames.Target))
  85                                         this.target = value.Attributes [XmlEncryption.AttributeNames.Target].Value;
  86                         }
  87                 }
  88
  89                 #endregion // Methods
  90         }
  91 }
  92
  93 #endif