Encrypt decrypt data within your configuration file

Posted Date: 16 Nov 2008	Resource Type: Code Snippets	Category: C# Syntax
Author: MASNSN	Member Level: Gold
Rating:	Points: 10

using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

using System.Security.Cryptography;

using System.Configuration;

using System.Windows.Forms;

namespace EncryptConfigurationFile

{

class ConfigurationSectionEncryptor

{

private ConfigurationSectionEncryptor() { }

///

/// This static method helps encrypt the given data set

///

/// String : The configuration file path

public static void Encrypt(string ConfigurationFilePath)

{

//Create a new ExeConfigurationFileMap

ExeConfigurationFileMap oFile = new ExeConfigurationFileMap();

//Precise its path

oFile.ExeConfigFilename = ConfigurationFilePath;

//Create a new configuration object related to the configuration file

Configuration oConfiguration = ConfigurationManager.OpenMappedExeConfiguration(oFile, ConfigurationUserLevel.None);

//Create a section and set it as the targeted section

ConnectionStringsSection oSection = oConfiguration.GetSection("connectionStrings") as ConnectionStringsSection;

//if the section is already encrypted dont ecrypt it again

if (oSection != null && !oSection.SectionInformation.IsProtected)

{

//The section ecryption

oSection.SectionInformation.ProtectSection("RsaProtectedConfigurationProvider");

//Update the configuration file

oConfiguration.Save();

MessageBox.Show("Connection string encrypted");

}

}

///

/// This static method helps encrypt the given data set

///

/// String : The configuration file path

public static void Decrypt(string ConfigurationPath)

{

//Create a new ExeConfigurationFileMap

ExeConfigurationFileMap oFile = new ExeConfigurationFileMap();

//Precise its path

oFile.ExeConfigFilename = Application.StartupPath + @"\EncryptConfigurationFile.exe.config";

//Create a new configuration object related to the configuration file

Configuration oConfiguration = ConfigurationManager.OpenMappedExeConfiguration(oFile, ConfigurationUserLevel.None);

//Create a section and set it as the targeted section

ConnectionStringsSection oSection = oConfiguration.GetSection("connectionStrings") as ConnectionStringsSection;

if (oSection != null && oSection.SectionInformation.IsProtected)

{

oSection.SectionInformation.UnprotectSection();

oConfiguration.Save();

MessageBox.Show("Connection string decrypted");

}

}

}

}

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