Month: February 2011

SetPrincipalPolicy

Posted on by coder
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using System;
using System.Security;
using System.Security.Principal;
using System.Security.Permissions;

class Program {
    static void Main(string[] args) {
        AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal);
        try {
            ShowMessage();
        } catch (SecurityException exception) {
            Console.WriteLine(exception.Message);
        }
    }

    [PrincipalPermissionAttribute(SecurityAction.Demand,Role = "BUILTINUsers")]
    static void ShowMessage() {
        Console.WriteLine("The current principal is logged in locally ");
        Console.WriteLine("(they are a member of the local Users group)");
    }
}

Configure the AppDomainSetup

Posted on by coder
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using System;

class Test
{
    public static void Main()
    {
        AppDomainSetup setupInfo = new AppDomainSetup();

        setupInfo.ApplicationBase = @"C:MyRootDirectory";
        setupInfo.ConfigurationFile = "MyApp.config";
        setupInfo.PrivateBinPath = "bin;plugins;external";

        AppDomain newDomain = 
            AppDomain.CreateDomain("My New AppDomain", null, setupInfo);
    }
}

SetData, GetData

Posted on by coder
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using System; 
using System.Reflection;
using System.Collections;

class ListModifier{
    public ListModifier()
    {
        ArrayList list = (ArrayList)AppDomain.CurrentDomain.GetData("Pets");
        list.Add("turtle");
    }
}
class MainClass{
      public static void Main(){
          AppDomain domain = AppDomain.CreateDomain("Test");

          ArrayList list = new ArrayList();
          list.Add("dog");
          list.Add("cat");
          list.Add("fish");

          domain.SetData("Pets", list);

          domain.CreateInstance("MainClass","Apress.VisualCSharpRecipes.Chapter03.ListModifier");

          foreach (string s in (ArrayList)domain.GetData("Pets")) {
              Console.WriteLine(s);
          }
      }
}

AppDomain.CreateDomain

Posted on by coder
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using System; 

    class MainClass
    {
        public static void Main()
        {
            AppDomainSetup setupInfo = new AppDomainSetup();

            setupInfo.ApplicationBase = @"C:MyRootDirectory";
            setupInfo.ConfigurationFile = "MyApp.config";
            setupInfo.PrivateBinPath = "bin;plugins;external";

            AppDomain newDomain = AppDomain.CreateDomain("My New AppDomain", null, setupInfo);

        }
    }

ClientCertificates

Posted on by coder
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using System;
using System.Net;
using System.Security.Cryptography.X509Certificates;

class MainClass {
    public static void Main() {
        WebRequest requestA = WebRequest.Create("http://www.yoursite.com");
        requestA.Credentials = new NetworkCredential("userName", "password");
        requestA.PreAuthenticate = true;
        WebRequest requestB = WebRequest.Create("http://www.yoursite.com");
        requestB.Credentials = CredentialCache.DefaultCredentials;
        requestB.PreAuthenticate = true;

        HttpWebRequest requestC = (HttpWebRequest)WebRequest.Create("http://www.yoursite.com");
        X509Certificate cert1 = X509Certificate.CreateFromCertFile("TestCertificate.cer");
        requestC.ClientCertificates.Add(cert1);
        HttpWebRequest requestD = (HttpWebRequest)WebRequest.Create("http://www.yoursite.com");
        X509Store store = new X509Store();
        X509Certificate2Collection certs = store.Certificates.Find(X509FindType.FindBySubjectName,"Joe", false);

        if (certs.Count == 1) {
            requestD.ClientCertificates.Add(certs[0]);
        } else {
            certs = X509Certificate2UI.SelectFromCollection(
                store.Certificates,
                "Select Certificate",
                "Select the certificate to use for authentication.",
                X509SelectionFlag.SingleSelection);

            if (certs.Count != 0) {
                requestD.ClientCertificates.Add(certs[0]);
            }
        }
    }
}

Returns a SHA1 hash of a given plaintext

Posted on by coder
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//---------------------------------------------------------------------
//  This file is part of the Background Motion solution.
// 
//  Copyright (C) Mindscape (TM).  All rights reserved.
//  http://www.mindscape.co.nz
// 
//  THIS CODE AND INFORMATION ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY
//  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
//  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//  PARTICULAR PURPOSE.
//---------------------------------------------------------------------

using System;
using System.Security.Cryptography;
using System.Text;

namespace Mindscape.BackgroundMotion.Core.Utilities
{
  /// <summary>
  /// Helper class which provides functions for assisting with hashing values
  /// </summary>
  public static class Hasher
  {
    /// <summary>
    /// Returns a SHA1 hash of a given plaintext
    /// </summary>
    public static string GetSHA1Hash(string plaintext)
    {
      return BitConverter.ToString(new SHA1CryptoServiceProvider()
        .ComputeHash(Encoding.Default.GetBytes(plaintext)))
        .Replace("-", String.Empty);
    }
  }
}

Encrypt SHA256

Posted on by coder
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//-----------------------------------------------------------------------
// <copyright file="CryptoUtil.cs" company="Pyramid Consulting">
//     Copyright (c) Pyramid Consulting. All rights reserved.
//  khoa.tran - 15-Dec-2007
// </copyright>
//-----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;

namespace Bamboo.Core.Common.Crypto
{
    public class CryptoUtil
    {
        public static byte[] EncryptSHA256(string text)
        {
            SHA256 sha256 = SHA256.Create();
            UTF8Encoding encoding = new UTF8Encoding();
            return sha256.ComputeHash(encoding.GetBytes(text));
        }
    }
}