mcs/class/referencesource/mscorlib/system/security/cryptography/hmacsha1.cs

   1 // ==++==
   2 //
   3 //   Copyright (c) Microsoft Corporation.  All rights reserved.
   4 //
   5 // ==--==
   6 // <OWNER>[....]</OWNER>
   7 //
   8
   9 //
  10 // HMACSHA1.cs
  11 //
  12
  13 namespace System.Security.Cryptography {
  14     [System.Runtime.InteropServices.ComVisible(true)]
  15     public class HMACSHA1 : HMAC {
  16         //
  17         // public constructors
  18         //
  19
  20         public HMACSHA1 () : this (Utils.GenerateRandom(64)) {}
  21
  22         public HMACSHA1 (byte[] key) : this (key, false) {}
  23
  24         public HMACSHA1 (byte[] key, bool useManagedSha1) {
  25             m_hashName = "SHA1";
  26 #if FEATURE_CRYPTO && !FULL_AOT_RUNTIME
  27             if (useManagedSha1) {
  28 #endif // FEATURE_CRYPTO
  29                 m_hash1 = new SHA1Managed();
  30                 m_hash2 = new SHA1Managed();
  31 #if FEATURE_CRYPTO && !FULL_AOT_RUNTIME
  32             } else {
  33                 m_hash1 = new SHA1CryptoServiceProvider();
  34                 m_hash2 = new SHA1CryptoServiceProvider();
  35             }
  36 #endif // FEATURE_CRYPTO
  37
  38             HashSizeValue = 160;
  39             base.InitializeKey(key);
  40         }
  41     }
  42 }