Encrypt password in App.config

Question

I want to encrypt the password in connection string. When I make a connection to DB the connection string is openly stored in App.config and I need to find a way to keep only password encrypted.

Answer 1

Lets say this is your connection string:

<connectionStrings>     <add name="cs" connectionString="Data Source=myServerAddress;Initial Catalog=myDataBase;User Id=myUsername;Password=XXSDFASFDKSFJDKLJFDWERIODFSDFHSDJHKJNFJKSD;"/> </connectionStrings> 

Then you can do something like this:

string myCs = System.Configuration.ConfigurationManager.ConnectionStrings["cs"].ConnectionString;  System.Data.SqlClient.SqlConnectionStringBuilder csb = new System.Data.SqlClient.SqlConnectionStringBuilder(myCs); csb.Password = EncDecHelper.Decrypt(csb.Password); myCs = csb.ToString(); 

You can write EncDecHelper.Decrypt by using samples from here: Encrypt and decrypt a string