AI engineering glossary · Computing foundations
What is X.509 (digital certificate)?
Digital certificate (also called SSL certificate, X.509): An electronic document, signed by a trusted authority, that ties a public key to the identity of a website or organisation. Browsers check it to be sure they are talking to the real server.
Digital certificate: an example
When a website's certificate has expired, browsers show a warning before letting you continue.
Related terms
More Computing foundations terms
Where you learn it
Digital certificate is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.