This lecture is part of my undergraduate security course at the University of Cambridge.
00:00 Intro
01:47 Authentication
04:41 How do passwords work?
05:33 Hashing
06:56 Salting
11:53 Key stretching
12:36 Cracking hashed passwords (other video)
12:42 Jimmy Kimmel
14:17 How passwords fail
19:17 Why are passwords still with us?
22:47 Alternatives to passwords
Other lectures in this series:
Course web page:
Course textbook and exercises:
Capture-the-flag security competitions I co-founded:
My home page: