mcs/class/Mono.Security/Mono.Math.Prime/ConfidenceFactor.cs

   1 //
   2 // Mono.Math.Prime.ConfidenceFactor.cs - Confidence factor for prime generation
   3 //
   4 // Authors:
   5 //      Ben Maurer
   6 //
   7 // Copyright (c) 2003 Ben Maurer. All rights reserved
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32
  33 namespace Mono.Math.Prime {
  34         /// <summary>
  35         /// A factor of confidence.
  36         /// </summary>
  37 #if INSIDE_CORLIB
  38         internal
  39 #else
  40         public
  41 #endif
  42         enum ConfidenceFactor {
  43                 /// <summary>
  44                 /// Only suitable for development use, probability of failure may be greater than 1/2^20.
  45                 /// </summary>
  46                 ExtraLow,
  47                 /// <summary>
  48                 /// Suitable only for transactions which do not require forward secrecy.  Probability of failure about 1/2^40
  49                 /// </summary>
  50                 Low,
  51                 /// <summary>
  52                 /// Designed for production use. Probability of failure about 1/2^80.
  53                 /// </summary>
  54                 Medium,
  55                 /// <summary>
  56                 /// Suitable for sensitive data. Probability of failure about 1/2^160.
  57                 /// </summary>
  58                 High,
  59                 /// <summary>
  60                 /// Use only if you have lots of time! Probability of failure about 1/2^320.
  61                 /// </summary>
  62                 ExtraHigh,
  63                 /// <summary>
  64                 /// Only use methods which generate provable primes. Not yet implemented.
  65                 /// </summary>
  66                 Provable
  67         }
  68 }