MacStream.cs :  » PDF » iTextSharp » Org » BouncyCastle » Crypto » IO » C# / CSharp Open Source

Home
C# / CSharp Open Source
1.2.6.4 mono .net core
2.2.6.4 mono core
3.Aspect Oriented Frameworks
4.Bloggers
5.Build Systems
6.Business Application
7.Charting Reporting Tools
8.Chat Servers
9.Code Coverage Tools
10.Content Management Systems CMS
11.CRM ERP
12.Database
13.Development
14.Email
15.Forum
16.Game
17.GIS
18.GUI
19.IDEs
20.Installers Generators
21.Inversion of Control Dependency Injection
22.Issue Tracking
23.Logging Tools
24.Message
25.Mobile
26.Network Clients
27.Network Servers
28.Office
29.PDF
30.Persistence Frameworks
31.Portals
32.Profilers
33.Project Management
34.RSS RDF
35.Rule Engines
36.Script
37.Search Engines
38.Sound Audio
39.Source Control
40.SQL Clients
41.Template Engines
42.Testing
43.UML
44.Web Frameworks
45.Web Service
46.Web Testing
47.Wiki Engines
48.Windows Presentation Foundation
49.Workflows
50.XML Parsers
C# / C Sharp
C# / C Sharp by API
C# / CSharp Tutorial
C# / CSharp Open Source » PDF » iTextSharp 
iTextSharp » Org » BouncyCastle » Crypto » IO » MacStream.cs
using System;
using System.IO;

namespace Org.BouncyCastle.Crypto.IO{
  public class MacStream
    : Stream
  {
    protected readonly Stream stream;
    protected readonly IMac inMac;
    protected readonly IMac outMac;

    public MacStream(
      Stream  stream,
      IMac  readMac,
      IMac  writeMac)
    {
      this.stream = stream;
      this.inMac = readMac;
      this.outMac = writeMac;
    }

    public virtual IMac ReadMac()
    {
      return inMac;
    }

    public virtual IMac WriteMac()
    {
      return outMac;
    }

    public override int Read(
      byte[]  buffer,
      int    offset,
      int    count)
    {
      int n = stream.Read(buffer, offset, count);
      if (inMac != null)
      {
        if (n > 0)
        {
          inMac.BlockUpdate(buffer, offset, n);
        }
      }
      return n;
    }

    public override int ReadByte()
    {
      int b = stream.ReadByte();
      if (inMac != null)
      {
        if (b >= 0)
        {
          inMac.Update((byte)b);
        }
      }
      return b;
    }

    public override void Write(
      byte[]  buffer,
      int    offset,
      int    count)
    {
      if (outMac != null)
      {
        if (count > 0)
        {
          outMac.BlockUpdate(buffer, offset, count);
        }
      }
      stream.Write(buffer, offset, count);
    }

    public override void WriteByte(byte b)
    {
      if (outMac != null)
      {
        outMac.Update(b);
      }
      stream.WriteByte(b);
    }

    public override bool CanRead
    {
      get { return stream.CanRead; }
    }

    public override bool CanWrite
    {
      get { return stream.CanWrite; }
    }

    public override bool CanSeek
    {
      get { return stream.CanSeek; }
    }

    public override long Length
    {
      get { return stream.Length; }
    }

    public override long Position
    {
      get { return stream.Position; }
      set { stream.Position = value; }
    }

    public override void Close()
    {
      stream.Close();
    }

    public override void Flush()
    {
      stream.Flush();
    }

    public override long Seek(
      long    offset,
      SeekOrigin  origin)
    {
      return stream.Seek(offset,origin);
    }

    public override void SetLength(
      long length)
    {
      stream.SetLength(length);
    }
  }
}

www.java2v.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.