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

   1 //
   2 // System.Security.Cryptography.RandomNumberGenerator
   3 //
   4 // author:
   5 //   Duco Fijma (duco@lorentz.xs4all.nl)
   6 //
   7 //   (C) 2002 Duco Fijma
   8 // Copyright (C) 2004-2006 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 using System.Runtime.InteropServices;
  31
  32 namespace System.Security.Cryptography {
  33
  34 #if !NET_2_1
  35         [ComVisible (true)]
  36 #endif
  37         public abstract class RandomNumberGenerator {
  38
  39                 protected RandomNumberGenerator ()
  40                 {
  41                 }
  42
  43                 public static RandomNumberGenerator Create ()
  44                 {
  45                         // create the default random number generator
  46                         return Create ("System.Security.Cryptography.RandomNumberGenerator");
  47                 }
  48
  49                 public static RandomNumberGenerator Create (string rngName)
  50                 {
  51                         return (RandomNumberGenerator) (CryptoConfig.CreateFromName (rngName));
  52                 }
  53
  54                 public abstract void GetBytes (byte[] data);
  55
  56                 public abstract void GetNonZeroBytes (byte[] data);
  57         }
  58 }