2 // ProtectedMemory.cs: Protect (encrypt) memory without (user involved) key management
5 // Sebastien Pouliot (spouliot@motus.com)
7 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
8 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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34 namespace System.Security.Cryptography {
37 // a. Windows Data Protection
38 // http://msdn.microsoft.com/library/en-us/dnsecure/html/windataprotection-dpapi.asp?frame=true
40 public sealed class ProtectedMemory {
42 private ProtectedMemory ()
47 public static void Protect (byte[] userData, MemoryProtectionScope scope)
50 throw new ArgumentNullException ("userData");
51 if (userData.Length % 16 != 0)
52 throw new CryptographicException ("not a multiple of 16 bytes");
54 // on Windows this is supported only under XP and later OS
55 throw new PlatformNotSupportedException ();
59 public static void Unprotect (byte[] encryptedData, MemoryProtectionScope scope)
61 if (encryptedData == null)
62 throw new ArgumentNullException ("encryptedData");
63 if (encryptedData.Length % 16 != 0)
64 throw new CryptographicException ("not a multiple of 16 bytes");
66 // on Windows this is supported only under XP and later OS
67 throw new PlatformNotSupportedException ();