class/System.IdentityModel/System.IdentityModel.Tokens/SecurityKey.cs

   1 //
   2 // SecurityKey.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2005 Novell, Inc.  http://www.novell.com
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 using System;
  29 using System.Collections.Generic;
  30 using System.Xml;
  31 using System.IdentityModel.Policy;
  32 using System.Security.Cryptography.Xml;
  33
  34 namespace System.IdentityModel.Tokens
  35 {
  36         enum AlgorithmSupportType
  37         {
  38                 Symmetric,
  39                 Asymmetric,
  40                 Unsupported,
  41         }
  42
  43         public abstract class SecurityKey
  44         {
  45                 internal static AlgorithmSupportType GetAlgorithmSupportType (string algorithm)
  46                 {
  47                         switch (algorithm) {
  48                         case SecurityAlgorithms.HmacSha1Signature:
  49                         case SecurityAlgorithms.Psha1KeyDerivation:
  50                         case SecurityAlgorithms.Aes128Encryption:
  51                         case SecurityAlgorithms.Aes128KeyWrap:
  52                         case SecurityAlgorithms.Aes192Encryption:
  53                         case SecurityAlgorithms.Aes192KeyWrap:
  54                         case SecurityAlgorithms.Aes256Encryption:
  55                         case SecurityAlgorithms.Aes256KeyWrap:
  56                         case SecurityAlgorithms.TripleDesEncryption:
  57                         case SecurityAlgorithms.TripleDesKeyWrap:
  58                         case SecurityAlgorithms.DesEncryption:
  59                                 return AlgorithmSupportType.Symmetric;
  60                         case SecurityAlgorithms.DsaSha1Signature:
  61                         case SecurityAlgorithms.RsaV15KeyWrap:
  62                         case SecurityAlgorithms.RsaOaepKeyWrap:
  63                         case SecurityAlgorithms.RsaSha1Signature:
  64                         case SecurityAlgorithms.RsaSha256Signature:
  65                                 return AlgorithmSupportType.Asymmetric;
  66                         default:
  67                                 return AlgorithmSupportType.Unsupported;
  68                         }
  69                 }
  70
  71                 [MonoTODO]
  72                 protected SecurityKey ()
  73                 {
  74                 }
  75
  76                 public abstract int KeySize { get; }
  77
  78                 public abstract byte [] DecryptKey (string algorithm, byte [] keyData);
  79
  80                 public abstract byte [] EncryptKey (string algorithm, byte [] keyData);
  81
  82                 public abstract bool IsAsymmetricAlgorithm (string algorithm);
  83
  84                 public abstract bool IsSupportedAlgorithm (string algorithm);
  85
  86                 public abstract bool IsSymmetricAlgorithm (string algorithm);
  87         }
  88 }