Certificate password in Windows Installer Editor

Hi all, its been a long time since I posted here.

A .WSI or .MSI make use of Digital Signature and using the Signtool.exe with Personal Information Exchange (.pfx) option, compiled it and at the end of compilation process, it prompt for the certificate password. My question, does it stored the certificate password somewhere in the setup file (either EXE or MSI)?

If NO, then it's ok. If YES, where and how to look for the password?

Thank you.