mcs/class/corlib/System.Security.Cryptography/ProtectedData.cs

   1 //
   2 // ProtectedData.cs: Protect (encrypt) data without (user involved) key management
   3 //
   4 // Author:
   5 //      Sebastien Pouliot (spouliot@motus.com)
   6 //
   7 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
   8 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 #if NET_2_0
  31
  32 using System;
  33
  34 namespace System.Security.Cryptography {
  35
  36         // References:
  37         // a.   Windows Data Protection
  38         //      http://msdn.microsoft.com/library/en-us/dnsecure/html/windataprotection-dpapi.asp?frame=true
  39
  40         public sealed class ProtectedData {
  41
  42                 private ProtectedData ()
  43                 {
  44                 }
  45
  46                 // FIXME: interop could be important under windows - if one application protect some data using
  47                 // mono and another one unprotects it using ms.net
  48
  49                 [MonoTODO ("interop with MS implementation ?")]
  50                 public static byte[] Protect (byte[] userData, byte[] optionalEntropy, DataProtectionScope scope)
  51                 {
  52                         if (userData == null)
  53                                 throw new ArgumentNullException ("userData");
  54
  55                         // on Windows this is supported only under 2000 and later OS
  56                         throw new PlatformNotSupportedException ();
  57                 }
  58
  59                 [MonoTODO ("interop with MS implementation ?")]
  60                 public static byte[] Unprotect (byte[] encryptedData, byte[] optionalEntropy, DataProtectionScope scope)
  61                 {
  62                         if (encryptedData == null)
  63                                 throw new ArgumentNullException ("encryptedData");
  64
  65                         // on Windows this is supported only under 2000 and later OS
  66                         throw new PlatformNotSupportedException ();
  67                 }
  68         }
  69 }
  70
  71 #endif