mcs/class/referencesource/System.IdentityModel.Selectors/infocard/common/managed/InfoCardCryptoHelper.cs

   1 //------------------------------------------------------------
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.
   3 //------------------------------------------------------------
   4
   5 namespace Microsoft.InfoCards
   6 {
   7     using System.IdentityModel.Tokens;
   8     using System.Security.Cryptography;
   9     using System.Security.Cryptography.Xml;
  10
  11     // copied from IdentityModel\CryptoHelper.cs and they need to be kept in sync.  After V1, we need to rethink how we can have
  12     // a single place to ask this question.  Perhaps even add it as an extensibility
  13
  14     internal static class InfoCardCryptoHelper
  15     {
  16
  17         internal static bool IsAsymmetricAlgorithm(string algorithm)
  18         {
  19             switch (algorithm)
  20             {
  21                 case SecurityAlgorithms.DsaSha1Signature:
  22                 case SecurityAlgorithms.RsaSha1Signature:
  23                 case SecurityAlgorithms.RsaSha256Signature:
  24                 case SecurityAlgorithms.RsaOaepKeyWrap:
  25                 case SecurityAlgorithms.RsaV15KeyWrap:
  26                     return true;
  27                 default:
  28                     return false;
  29             }
  30         }
  31
  32         internal static bool IsSymmetricAlgorithm(string algorithm)
  33         {
  34             switch (algorithm)
  35             {
  36                 case SecurityAlgorithms.HmacSha1Signature:
  37                 case SecurityAlgorithms.HmacSha256Signature:
  38                 case SecurityAlgorithms.Aes128Encryption:
  39                 case SecurityAlgorithms.Aes192Encryption:
  40                 case SecurityAlgorithms.Aes256Encryption:
  41                 case SecurityAlgorithms.TripleDesEncryption:
  42                 case SecurityAlgorithms.Aes128KeyWrap:
  43                 case SecurityAlgorithms.Aes192KeyWrap:
  44                 case SecurityAlgorithms.Aes256KeyWrap:
  45                 case SecurityAlgorithms.TripleDesKeyWrap:
  46                 case SecurityAlgorithms.Psha1KeyDerivation:
  47                 case SecurityAlgorithms.Psha1KeyDerivationDec2005:
  48                     return true;
  49                 default:
  50                     return false;
  51             }
  52         }
  53
  54     }
  55 }