Dive into the world of X.509 certificates in this comprehensive 22-minute video. Explore the fundamentals of certificate authorities (CAs), learn how to create your own CA, and understand the process of signing server certificates. Gain insights into the workings of LetsEncrypt, private and public key mechanisms, and the concept of certificate chains or chains of trust. Follow along as the instructor demonstrates creating a custom CA and certificates using the XCA tool. Discover when and how to effectively use self-signed CAs. With time-stamped sections covering various aspects of certificates, from basics to practical applications, acquire essential knowledge for managing digital security and authentication.