Imported Upstream version 4.8.0.309

Former-commit-id: 5f9c6ae75f295e057a7d2971f3a6df4656fa8850

mcs/class/System.IdentityModel/System.ServiceModel.Security.Tokens/WrappedKeySecurityToken.cs

@@ -0,0 +1,176 @@
+//
+// WrappedKeySecurityToken.cs
+//
+// Author:
+//	Atsushi Enomoto <atsushi@ximian.com>
+//
+// Copyright (C) 2006 Novell, Inc.  http://www.novell.com
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+using System;
+using System.Collections.ObjectModel;
+using System.Security.Cryptography;
+using System.Security.Cryptography.Xml;
+using System.Xml;
+using System.IdentityModel.Policy;
+using System.IdentityModel.Tokens;
+
+namespace System.ServiceModel.Security.Tokens
+{
+	public class WrappedKeySecurityToken : SecurityToken
+	{
+		string id;
+		byte [] raw_key;
+		byte [] wrapped_key;
+		string wrap_alg;
+		SecurityToken wrap_token;
+		SecurityKeyIdentifier wrap_token_ref;
+		DateTime valid_from = DateTime.Now.ToUniversalTime ();
+		ReadOnlyCollection<SecurityKey> keys;
+		ReferenceList reference_list;
+		byte [] keyhash;
+
+		public WrappedKeySecurityToken (
+			string id,
+			byte [] keyToWrap,
+			string wrappingAlgorithm,
+			SecurityToken wrappingToken,
+			SecurityKeyIdentifier wrappingTokenReference)
+		{
+			if (id == null)
+				throw new ArgumentNullException ("id");
+			if (keyToWrap == null)
+				throw new ArgumentNullException ("keyToWrap");
+			if (wrappingAlgorithm == null)
+				throw new ArgumentNullException ("wrappingAlgorithm");
+			if (wrappingToken == null)
+				throw new ArgumentNullException ("wrappingToken");
+
+			raw_key = keyToWrap;
+			this.id = id;
+			wrap_alg = wrappingAlgorithm;
+			wrap_token = wrappingToken;
+			wrap_token_ref = wrappingTokenReference;
+			Collection<SecurityKey> l = new Collection<SecurityKey> ();
+			foreach (SecurityKey sk in wrappingToken.SecurityKeys) {
+				if (sk.IsSupportedAlgorithm (wrappingAlgorithm)) {
+					wrapped_key = sk.EncryptKey (wrappingAlgorithm, keyToWrap);
+					l.Add (new InMemorySymmetricSecurityKey (keyToWrap));
+					break;
+				}
+			}
+			keys = new ReadOnlyCollection<SecurityKey> (l);
+			if (wrapped_key == null)
+				throw new ArgumentException (String.Format ("None of the security keys in the argument token supports specified wrapping algorithm '{0}'", wrappingAlgorithm));
+		}
+
+		internal byte [] RawKey {
+			get { return raw_key; }
+		}
+
+		// It is kind of compromised solution to output
+		// ReferenceList inside e:EncryptedKey and might disappear
+		// when non-wrapped key is represented by another token type.
+		internal ReferenceList ReferenceList {
+			get { return reference_list; }
+			set { reference_list = value; }
+		}
+
+		public override DateTime ValidFrom {
+			get { return valid_from; }
+		}
+
+		public override DateTime ValidTo {
+			get { return DateTime.MaxValue.AddDays (-1); }
+		}
+
+		public override string Id {
+			get { return id; }
+		}
+
+		public override ReadOnlyCollection<SecurityKey> SecurityKeys {
+			get { return keys; }
+		}
+
+		public string WrappingAlgorithm {
+			get { return wrap_alg; }
+		}
+
+		public SecurityToken WrappingToken {
+			get { return wrap_token; }
+		}
+
+		public SecurityKeyIdentifier WrappingTokenReference {
+			get { return wrap_token_ref; }
+		}
+
+		public byte [] GetWrappedKey ()
+		{
+			return (byte []) wrapped_key.Clone ();
+		}
+
+		internal void SetWrappedKey (byte [] value)
+		{
+			wrapped_key = (byte []) value.Clone ();
+		}
+
+		[MonoTODO]
+		public override bool CanCreateKeyIdentifierClause<T> ()
+		{
+			/*
+			foreach (SecurityKeyIdentifierClause k in WrappingTokenReference) {
+				Type t = k.GetType ();
+				if (t == typeof (T) || t.IsSubclassOf (typeof (T)))
+					return true;
+			}
+			*/
+			return false;
+		}
+
+		[MonoTODO]
+		public override T CreateKeyIdentifierClause<T> ()
+		{
+			/*
+			foreach (SecurityKeyIdentifierClause k in WrappingTokenReference) {
+				Type t = k.GetType ();
+				if (t == typeof (T) || t.IsSubclassOf (typeof (T)))
+					return (T) k;
+			}
+			*/
+			throw new NotSupportedException (String.Format ("WrappedKeySecurityToken cannot create '{0}'", typeof (T)));
+		}
+
+		public override bool MatchesKeyIdentifierClause (SecurityKeyIdentifierClause keyIdentifierClause)
+		{
+			LocalIdKeyIdentifierClause lkic = keyIdentifierClause as LocalIdKeyIdentifierClause;
+			if (lkic != null && lkic.LocalId == Id)
+				return true;
+
+			InternalEncryptedKeyIdentifierClause khic = keyIdentifierClause as InternalEncryptedKeyIdentifierClause;
+			if (keyhash == null)
+				keyhash = SHA1.Create ().ComputeHash (wrapped_key);
+			if (khic != null && khic.Matches (keyhash))
+				return true;
+
+			return false;
+		}
+	}
+}