SHA: Secure Hashing Algorithm - Computerphile

Secure Hashing Algorithm (SHA1) explained. Dr Mike Pound explains how files are used to generate seemingly random hash strings.

This video was filmed and edited by Sean Riley.

[realeques]

Mike Pound is by far my favorite person on this channel... he has the most interesting subjects, shines with crazy knowledge while still keeping the video fresh and dynamic.

[Timber]

I could sit and watch videos from this guy all day long, so informative and laid back

[DanMcB]

This is too much work, can’t we just trust each other?

[Sicaoisdead]

Love how these videos get STRAIGHT to the point.

[themysteriousfox]

As a CS student im super grateful for these vids, you guys explain it better than a lot of professors.

[krishnanmuru-girthy]

Been watching a whole bunch of Mike's videos as a complement to my introductory module on Security and Authentication. One of the best teachers I have come across!

[canyakar]

I've been trying to understand the concept for 3 days from the slides my teacher covered and the book she shared and ended up with complicated mind, this video gave me a pure understanding in 10 mins. Great job!

[JimmyGeniusEllis]

I am at a hackathon in Chicago Illinois at Illinois Institute of technology and I have to use sha-1 on some facts before I pass then to an api so I can make a project for the Hackathon. You did a wonderful job telling me what she-1 was so I could understand the cryptic api documentation. Thank you very much.

[CJBurkey]

This is my favorite guy on this channel. I just love stuff like this.

[jony]

Mike Pound is the best! I love hearing him explain things – keep em coming!

[sara-nq]

Roses are red
Violets are blue
Unexpected { on line 32

[Hari-]

pound for pound Mike pound is the best narrator on computerphile

[xXParzivalXx]

Hmm, so far this is fairly straightforward, but the interesting part would be how exactly these compression functions work. Will there be a follow-up video on that?

[andysmith]

Thanks, Dr Pound (if you read this). I find your demeanour easy to engage with, and you set me off on the journey of understanding fully (with much work!).

[seraph]

Mike you are my favourite person to appear on this channel. I enjoy your clear explanations and like the quite recent toppics like google deep dream, dijkstra and so on.

[ellenasman]

I've always loved your videos and now I study computer science and can watch your videos for studying, it's amazing

[michaelcrosby]

Me: Explain SHA
Dr. Pound: Explains it
Me confused: Explain it to me like I'm 12
Dr. Pound: Explains it like I'm 12
Me still: Explain it to me like I'm 5...

[_aullik]

How does the padding work if a block is 511 bits long?

[joinedupjon]

Thought I was following until 9:35
He describes a way of padding that will produce the same padding string for messages with the same length - then says it's important that messages with the same length don't have the same padding string. Did something important end up on the editing room floor?

[donovanlay]

The washing machine example really helped seal in this topic I was trying to understand and helped me on my final project. Thank you!!!