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

   1 //
   2 // XmlSignature.cs: Handles Xml Signature
   3 //
   4 // Author:
   5 //      Sebastien Pouliot (spouliot@motus.com)
   6 //      Atsushi Enomoto (atsushi@ximian.com)
   7 //      Tim Coleman (tim@timcoleman.com)
   8 //
   9 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
  10 // Copyright (C) Tim Coleman, 2004
  11 // (C) 2004 Novell Inc.
  12 //
  13
  14 //
  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:
  22 //
  23 // The above copyright notice and this permission notice shall be
  24 // included in all copies or substantial portions of the Software.
  25 //
  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.
  33 //
  34
  35 using System;
  36 using System.Collections;
  37 using System.Xml;
  38
  39 namespace System.Security.Cryptography.Xml {
  40
  41         // following the design of WSE
  42         internal class XmlSignature {
  43
  44                 public class ElementNames {
  45
  46                         public const string CanonicalizationMethod = "CanonicalizationMethod";
  47                         public const string DigestMethod = "DigestMethod";
  48                         public const string DigestValue = "DigestValue";
  49                         public const string DSAKeyValue = "DSAKeyValue";
  50                         public const string EncryptedKey = "EncryptedKey";
  51                         public const string HMACOutputLength = "HMACOutputLength";
  52                         public const string KeyInfo = "KeyInfo";
  53                         public const string KeyName = "KeyName";
  54                         public const string KeyValue = "KeyValue";
  55                         public const string Manifest = "Manifest";
  56                         public const string Object = "Object";
  57                         public const string Reference = "Reference";
  58                         public const string RetrievalMethod = "RetrievalMethod";
  59                         public const string RSAKeyValue = "RSAKeyValue";
  60                         public const string Signature = "Signature";
  61                         public const string SignatureMethod = "SignatureMethod";
  62                         public const string SignatureValue = "SignatureValue";
  63                         public const string SignedInfo = "SignedInfo";
  64                         public const string Transform = "Transform";
  65                         public const string Transforms = "Transforms";
  66                         public const string X509Data = "X509Data";
  67                         public const string X509IssuerSerial = "X509IssuerSerial";
  68                         public const string X509IssuerName = "X509IssuerName";
  69                         public const string X509SerialNumber = "X509SerialNumber";
  70                         public const string X509SKI = "X509SKI";
  71                         public const string X509SubjectName = "X509SubjectName";
  72                         public const string X509Certificate = "X509Certificate";
  73                         public const string X509CRL = "X509CRL";
  74
  75                         public ElementNames () {}
  76                 }
  77
  78                 public class AttributeNames {
  79
  80                         public const string Algorithm = "Algorithm";
  81                         public const string Encoding = "Encoding";
  82                         public const string Id = "Id";
  83                         public const string MimeType = "MimeType";
  84                         public const string Type = "Type";
  85                         public const string URI = "URI";
  86
  87                         public AttributeNames () {}
  88                 }
  89
  90                 public class AlgorithmNamespaces {
  91                         public const string XmlDsigBase64Transform = "http://www.w3.org/2000/09/xmldsig#base64";
  92                         public const string XmlDsigC14NTransform = "http://www.w3.org/TR/2001/REC-xml-c14n-20010315";
  93                         public const string XmlDsigC14NWithCommentsTransform = "http://www.w3.org/TR/2001/REC-xml-c14n-20010315#WithComments";
  94                         public const string XmlDsigEnvelopedSignatureTransform = "http://www.w3.org/2000/09/xmldsig#enveloped-signature";
  95                         public const string XmlDsigXPathTransform = "http://www.w3.org/TR/1999/REC-xpath-19991116";
  96                         public const string XmlDsigXsltTransform =  "http://www.w3.org/TR/1999/REC-xslt-19991116";
  97 #if NET_2_0
  98                         public const string XmlDsigExcC14NTransform = "http://www.w3.org/2001/10/xml-exc-c14n#";
  99                         public const string XmlDsigExcC14NWithCommentsTransform = "http://www.w3.org/2001/10/xml-exc-c14n#WithComments";
 100                         public const string XmlDecryptionTransform = "http://www.w3.org/2002/07/decrypt#XML";
 101                         public const string XmlLicenseTransform = "urn:mpeg:mpeg21:2003:01-REL-R-NS:licenseTransform";
 102 #endif
 103                 }
 104
 105                 public class Uri {
 106                         public const string Manifest = "http://www.w3.org/2000/09/xmldsig#Manifest";
 107                 }
 108
 109                 public const string NamespaceURI = "http://www.w3.org/2000/09/xmldsig#";
 110                 public const string Prefix = "ds";
 111
 112                 public XmlSignature ()
 113                 {
 114                 }
 115
 116                 public static XmlElement GetChildElement (XmlElement xel, string element, string ns)
 117                 {
 118                         for (int i = 0; i < xel.ChildNodes.Count; i++) {
 119                                 XmlNode n = xel.ChildNodes [i];
 120                                 if (n.NodeType == XmlNodeType.Element && n.LocalName == element && n.NamespaceURI == ns)
 121                                         return n as XmlElement;
 122                         }
 123                         return null;
 124                 }
 125
 126                 public static string GetAttributeFromElement (XmlElement xel, string attribute, string element)
 127                 {
 128                         XmlElement el = GetChildElement (xel, element, XmlSignature.NamespaceURI);
 129                         return el != null ? el.GetAttribute (attribute) : null;
 130                 }
 131
 132                 public static XmlElement [] GetChildElements (XmlElement xel, string element)
 133                 {
 134                         ArrayList al = new ArrayList ();
 135                         for (int i = 0; i < xel.ChildNodes.Count; i++) {
 136                                 XmlNode n = xel.ChildNodes [i];
 137                                 if (n.NodeType == XmlNodeType.Element && n.LocalName == element && n.NamespaceURI == XmlSignature.NamespaceURI)
 138                                         al.Add (n);
 139                         }
 140                         return al.ToArray (typeof (XmlElement)) as XmlElement [];
 141                 }
 142         }
 143 }