i have been trying to sign a message using multple receiver certificate.
my rational behind this is i wanna sign the original message using my own
private key and then i send the document for another person to sign the document.

i wonder if there is any standard practise by people in doing muliple signing?

i have gone thru the CAPICOM documentation and there is a cosign function?
how does it actually work and what is the end result of the function call?

i would be grateful if anyone can tell me more about my question.
thank you.