class/corlib/System.Security.Cryptography/HMACSHA384.cs

   1 //
   2 // HMACSHA384.cs: HMAC implementation using SHA384
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
   8 // Copyright (C) 2004-2005, 2007 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 !MOONLIGHT
  31
  32 using System.Runtime.InteropServices;
  33
  34 using Mono.Security.Cryptography;
  35
  36 namespace System.Security.Cryptography {
  37
  38         [ComVisible (true)]
  39         public class HMACSHA384 : HMAC {
  40
  41                 static bool legacy_mode;
  42                 private bool legacy;
  43
  44                 static HMACSHA384 ()
  45                 {
  46                         legacy_mode = (Environment.GetEnvironmentVariable ("legacyHMACMode") == "1");
  47                 }
  48
  49                 public HMACSHA384 ()
  50                         : this (KeyBuilder.Key (8))
  51                 {
  52                         ProduceLegacyHmacValues = legacy_mode;
  53                 }
  54
  55                 public HMACSHA384 (byte[] key)
  56                 {
  57                         ProduceLegacyHmacValues = legacy_mode;
  58                         HashName = "SHA384";
  59                         HashSizeValue = 384;
  60                         Key = key;
  61                 }
  62
  63                 // this property will appear in the next .NET service pack
  64                 // http://blogs.msdn.com/shawnfa/archive/2007/01/31/please-do-not-use-the-net-2-0-hmacsha512-and-hmacsha384-classes.aspx
  65                 public bool ProduceLegacyHmacValues {
  66                         get { return legacy; }
  67                         set {
  68                                 legacy = value;
  69                                 BlockSizeValue = legacy ? 64 : 128;
  70                         }
  71                 }
  72         }
  73 }
  74
  75 #endif