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

   1 // ==++==
   2 //
   3 //   Copyright (c) Microsoft Corporation.  All rights reserved.
   4 //
   5 // ==--==
   6 // <OWNER>Microsoft</OWNER>
   7 //
   8
   9 //
  10 // AsymmetricSignatureFormatter.cs
  11 //
  12
  13 namespace System.Security.Cryptography {
  14     using System;
  15     using System.Diagnostics.Contracts;
  16
  17 [System.Runtime.InteropServices.ComVisible(true)]
  18     public abstract class AsymmetricSignatureFormatter {
  19         //
  20         // protected constructors
  21         //
  22
  23         protected AsymmetricSignatureFormatter() {
  24         }
  25
  26         //
  27         // public methods
  28         //
  29
  30         abstract public void SetKey(AsymmetricAlgorithm key);
  31         abstract public void SetHashAlgorithm(String strName);
  32
  33         public virtual byte[] CreateSignature(HashAlgorithm hash) {
  34             if (hash == null) throw new ArgumentNullException("hash");
  35             Contract.EndContractBlock();
  36             SetHashAlgorithm(hash.ToString());
  37             return CreateSignature(hash.Hash);
  38         }
  39
  40         abstract public byte[] CreateSignature(byte[] rgbHash);
  41     }
  42 }