The video tutorial discusses the standards X.509 and PKCS, which are essential for managing digital certificates. It explains the hierarchy of certificate authorities, including root and intermediate authorities, and the importance of keeping root certificates secure. The role of registration authorities in handling certificate registrations is also covered. Finally, the concept of certificate chaining is introduced, illustrating how certificates are structured and verified.

Describe the function of intermediate certificate authorities.

What is a registration authority and how does it differ from a certificate authority?