• Microsoft Enterprise Library 5.0 系列(二) Cryptography Application Block (高级)


    本章介绍的是企业库加密应用程序模块Cryptographyproviders中为对称加密配置Key文件的3种方式:

    1. create a new key  : 使用一串字符串作为Key,然后通过加密保存到一个Key文件中.
    2. use an existing DPAPI-protected key file  : 使用一个现有的Key文件进行配置.
    3. import a password-protected key file   : 对导出的Key文件再进行一次Password加密.

    废话少说,现在就开始看看如何使用它们吧:

    一.  Create a new key 

      1.运行EntLibConfig.exe,选择Blocks菜单 ,单击 Add CryptographySettings .


      2.点击symmetriccryptography provider  区块右上角的加号按钮,然后点击 Add Symmetric Cryptography Providers,在弹出的加密算法中任意选择一个:

      3.在弹出的Key文件生成方案中,我们选择第一个Create a new key,点击Next:

      4.下一步是要你输入Key码,你可以自己手动输入一串自己定制好的Key码,也可以点击右下角的Generate按钮,让计算机为你自动生成一串Key码,在此我是直接点击Generate按钮生成的Key码,然后点击Next:

      5.接着是选择Key文件导出的目录,这里我先保存成桌面的test.key文件,设置好后点击Next:

      6.接着是选择模式,有User模式和Machine模式:   

        (1)User模式:每个应用程序有自己的唯一标识,无法访问其他应用程序的资源.
        (
    2)Machine模式:加密的文件只能使用在本电脑上使用,也就是说用这个模式,在其他电脑你还需要重新生成一个Key文件.
        在本地调试哪个模式都无所谓,我们就选择User模式吧:

      7.再点击Finish,就完成配置啦:

      桌面导出的Key文件:

      8.点击 File 菜单,单击 Save,保存为一个App.config文件,可以先保存到桌面,之后要用到它. 用记事本打开App.config,可以看到如下内容:

    <configuration>

    <configSections>

    <section name="securityCryptographyConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.Configuration.CryptographySettings,Microsoft.Practices.EnterpriseLibrary.Security.Cryptography, Version=5.0.414.0,Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true"/>

    </configSections>

    <securityCryptographyConfiguration>

    <symmetricCryptoProviders>

    <add name="RC2CryptoServiceProvider" type="Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.SymmetricAlgorithmProvider,Microsoft.Practices.EnterpriseLibrary.Security.Cryptography, Version=5.0.414.0,Culture=neutral, PublicKeyToken=31bf3856ad364e35"

    algorithmType
    ="System.Security.Cryptography.RC2CryptoServiceProvider,mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"

    protectedKeyFilename
    ="C:\Users\Administrator\Desktop\test.key"

    protectedKeyProtectionScope
    ="CurrentUser"/>

    </symmetricCryptoProviders>

    </securityCryptographyConfiguration>

    </configuration>

      9.要使用缓存应用程序模块, 需要导入相应的Dll文件,在此我们要导入的是Microsoft.Practices.EnterpriseLibrary.Caching.dll ,将App.config文件添加到项目中,并添加Microsoft.Practices.EnterpriseLibrary.Security.Cryptography引用:

      添加引用:

    using Microsoft.Practices.EnterpriseLibrary.Security.Cryptography;

      10.测试:

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;

    using Microsoft.Practices.EnterpriseLibrary.Security.Cryptography;

    namespace test
    {
    class Program
    {
    staticvoid Main(string[] args)
    {
    string Encrypt = Cryptographer.EncryptSymmetric("RC2CryptoServiceProvider", "HuangCong");

    Console.WriteLine(
    "密文:"+ Encrypt);

    Console.WriteLine(
    "------------------------------------------------");

    Encrypt
    = Cryptographer.DecryptSymmetric("RC2CryptoServiceProvider", Encrypt);
    Console.WriteLine(
    "原文:"+ Encrypt);
    }
    }
    }

      11.运行结果:

    二.  use an existingDPAPI-protected key file: 

    1. 为了不混淆之前的实验,我们先将原来的策略删除,恢复到最初的状态:

    1. 点击symmetric cryptography provider  区块右上角的加号按钮,然后点击 Add Symmetric Cryptography Providers,在弹出的加密算法中我们需要选择和之前一样的加密方法,因为你之前导出的Key文件只针对该算法而导出的:

    1. 又到了Key文件生成方案中,我们选择第二个Use an existing DPAPI-protected key file,点击Next:

    1. 接着就会要我们选择一个已经存在的Key文件作为本策略的Key文件,我们就选择之前刚刚创建好的test.key文件吧:

    1. 接着是选择模式,以前讲过,就不重复了,点击Finish完成配置.

       6.点击 File 菜单,单击 Save更新原有的App.config文件,打开可看到以下内容.

    <configuration>

    <configSections>

    <section name="securityCryptographyConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.Configuration.CryptographySettings,Microsoft.Practices.EnterpriseLibrary.Security.Cryptography, Version=5.0.414.0,Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true"/>

    </configSections>

    <securityCryptographyConfiguration>

    <symmetricCryptoProviders>

    <add name="RC2CryptoServiceProvider" type="Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.SymmetricAlgorithmProvider,Microsoft.Practices.EnterpriseLibrary.Security.Cryptography, Version=5.0.414.0,Culture=neutral, PublicKeyToken=31bf3856ad364e35"

    algorithmType
    ="System.Security.Cryptography.RC2CryptoServiceProvider,mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"

    protectedKeyFilename
    ="C:\Users\Administrator\Desktop\test.key"

    protectedKeyProtectionScope
    ="CurrentUser"/>

    </symmetricCryptoProviders>

    </securityCryptographyConfiguration>

    </configuration>
    1. 测试:
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;

    using Microsoft.Practices.EnterpriseLibrary.Security.Cryptography;

    namespace test
    {
    class Program
    {
    staticvoid Main(string[] args)
    {
    string Encrypt = Cryptographer.EncryptSymmetric("RC2CryptoServiceProvider", "HuangCong");

    Console.WriteLine(
    "密文:"+ Encrypt);

    Console.WriteLine(
    "------------------------------------------------");

    Encrypt
    = Cryptographer.DecryptSymmetric("RC2CryptoServiceProvider", Encrypt);
    Console.WriteLine(
    "原文:"+ Encrypt);
    }
    }
    }
    1. 运行结果:

    三.   Import a password-protected key file 

    1. 为了完成该实验,我们要先导出一个用Password加密过的key文件,则我们可以在刚才的策略工具栏上右键,选择Export Key:

    1. 接着设置的是对Key文件加密的密码和密码保存文件存放目录,在此我设置的密码是123456,存放目录为桌面的test.txt文件:

    1. 点击OK,就可以在桌面看到导出的密码保存文件啦:

    1. 为了不混淆之前的实验,我们先将原来的策略删除,恢复到最初的状态:

    1. 点击symmetric cryptography provider  区块右上角的加号按钮,然后点击 Add Symmetric Cryptography Providers,在弹出的加密算法中任意选择一个,为了做区分,我们仍然要选择原来的加密方法:

    1. Key文件生成方案中,我们选择第三个Import a password-protected key file,点击Next: 

    1. 接着程序要你提供密码保存文件和密码,在这里我们可以导入桌面的test.txt文件,密码输入123456,接着点击Next:

    1. 接着选择新导出的key文件的存放目录,这里我们保存它成桌面的test1.key文件,点击Next:

    1. 接着是选择模式,以前讲过,就不重复了,点击Finish完成配置.

      10. 点击 File 菜单,单击 Save更新原有的App.config文件,打开可看到以下内容:

    <configuration>

    <configSections>

    <section name="securityCryptographyConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.Configuration.CryptographySettings,Microsoft.Practices.EnterpriseLibrary.Security.Cryptography, Version=5.0.414.0,Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true"/>

    </configSections>

    <securityCryptographyConfiguration>

    <symmetricCryptoProviders>

    <add name="RC2CryptoServiceProvider" type="Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.SymmetricAlgorithmProvider,Microsoft.Practices.EnterpriseLibrary.Security.Cryptography, Version=5.0.414.0,Culture=neutral, PublicKeyToken=31bf3856ad364e35"

    algorithmType
    ="System.Security.Cryptography.RC2CryptoServiceProvider,mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"

    protectedKeyFilename
    ="C:\Users\Administrator\Desktop\test1.key"

    protectedKeyProtectionScope
    ="CurrentUser"/>

    </symmetricCryptoProviders>

    </securityCryptographyConfiguration>

    </configuration>
    1. 测试:
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;

    using Microsoft.Practices.EnterpriseLibrary.Security.Cryptography;

    namespace test
    {
    class Program
    {
    staticvoid Main(string[] args)
    {
    string Encrypt = Cryptographer.EncryptSymmetric("RC2CryptoServiceProvider", "HuangCong");

    Console.WriteLine(
    "密文:"+ Encrypt);

    Console.WriteLine(
    "------------------------------------------------");

    Encrypt
    = Cryptographer.DecryptSymmetric("RC2CryptoServiceProvider", Encrypt);
    Console.WriteLine(
    "原文:"+ Encrypt);
    }
    }
    }
    1. 运行结果:

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  • 原文地址:https://www.cnblogs.com/DoNetCShap/p/2295545.html
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