A string designating the script extension type (.vbs, .js, or .wsf). This provides a mechanism by which the operating system can determine the type of script file being verified.
A string containing the script to be signed.
A string designating the author's certificate name.
Optional. A string designating the name of the certificate store. Typically certificates that contain private keys — i.e., certificates you can use for code signing — are in a certificate store called "my". The default value is "my".