There are all different types of terminology used when you deal with security in the digital world. You will hear the terms digital certificate, X509 certificate, digital signature, public key, private key, public key cryptography, and more. Even for a tech savvy person, it can get confusing knowing what each individual term means and how it provides security features. Most of these items are different parts of digital certificates, while other items have to do with the process to create digital certificates.
Is an X509 Certificate Special Code for Something?
An X509 certificate is not special code for a secret mission or anything else, for that matter. This type of certificate is just the standard used to create all digital certificates. Digital certificates which follow this standard will contain the required items. There are also optional items allowed, and it will depend on the organization, who is issuing the digital certificate, whether they include optional items or leave them out of the certificate.