In asp.net 2.0, you can easily encrypt sensitive information in the web.config file. For example, if you have permission to operate the server,
You can use the following method to encrypt sensitive information in web.config, such as encrypting the database connection string.
aspnet_regiis -pe "connectionStrings" -app "/application name"
If you do not have permission, you can dynamically implement Configuration in the program
config = Configuration.GetWebConfiguration(Request.ApplicationPath);
ConfigurationSection section = config.Sections["connectionStrings"];
section.ProtectSection ("DataProtectionConfigurationProvider");
config.Update();