Video lectures for Alfred Menezes's introductory course on the fundamental building blocks used in cryptography. Lecture playlist: Topics covered: Encrypt-and-MAC, Encrypt-then-MAC, security definition for authenticated encryption Course web page: The slides are available on the course web page. Other cryptography courses: Slides 00:00 Introduction 00:55 Slide 189: Authenticated encryption (AE) 01:32 Slide 190: Encrypt-and-MAC 02:58 Slide 191: Encrypt-then-MAC 03:42 Slide 192: Special-purpose AE schemes 04:35 Slide 193: Authenticated encryption security 06:46 Coming up