Code signing certificate supports initiatives such as. exe，。 Taxi,. dll，。 ocx，。 MSI. Xpi and Xapfiles in Windows 32-bit and 64-bit user modes, and driver file signatures such as SYS and CAT in kernel mode. Code signing certificate can verify the source of the software and the integrity of the code, and users will know that the code program has not been illegally tampered with since its release, thus generating a high degree of trust for software developers, protecting the interests of software developers, and enabling software developers to release software safely and quickly through the Internet. So, first of all, you need to have a code signing certificate owned by your own company.