To encrypt/ decrypt connection string information stored in the Web.config file.

how to encrypt the connectionStrings section of the Web.config file for an application named SampleApplication:

 At the Windows command line, run the below commands.

                

1-      cd \WINDOWS\Microsoft.Net\Framework\v2.0.

                      ** (choose the .net version, here I select v2.0)

2-      aspnet_regiis -pe "connectionStrings" -app "/MyApplication"

·         The -pe option, passing it the string "connectionStrings" to encrypt the connectionStrings element.

·         The -app option, passing it the name of your application.

The aspnet_regiis.exe tool is located in the %systemroot%\Microsoft.NET\Framework\versionNumber folder.

 

how to grant the NETWORK SERVICE account access to the machine-level "NetFrameworkConfigurationKey" RSA key container

  At the Windows command line, run the below commands.

1-      Cd C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727

2-      aspnet_regiis -pa "NetFrameworkConfigurationKey" "NT Authority\Network Service"

how to decrypt the connectionStrings element of ASP.NET application SampleApplication.

 At the Windows command line, run the below commands.

1-      Cd C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727

2-  aspnet_regiis -pd "connectionStrings" -app "/SampleApplication"