Securing Stream Ciphers (HMAC) - Computerphile

Bit flipping a stream cipher could help you hit the Jackpot! But not with HMAC. Dr Mike Pound explains.

Correction : "pseudo" is spelled incorrectly on the graphic.

This video was filmed and edited by Sean Riley.

[ZehEduardo]

I want to meet this man. I feel like I could hear him talking from hours and not get bored.

[markusdemedeiros]

Dr. Pound! This guy could read me his shopping list and I would still watch it

[StreuB]

....I honestly get the feeling that Dr. Pound is wildly more intelligent that we realize or he portrays and he always seems like he has to hold back just a bit so he doesn't inadvertently say too much. Like, there is a line that shouldn't be crossed with regard to explaining things and he is constantly dancing with that line and at times has to stop for a moment and think "Ok, right, where am I?....oh, right, ok we can go further" lol

Anyone else get that??

Hes awesome man.

[gatoradeee]

This bloke is a well-rounded pundit of computer science--vision, cryptography, algorithms, all the good stuff.

[SmallSparrowsChannel]

Absolutely love these computerphile videos. To the team: please do not stop making more videos!

[amaarquadri]

The encryption related Computerphile videos are some of my favorite.

[OnlyUseMeEquip]

make a 2 hour video with this guy, i could listen to him all day

[jamesvanden]

HE'S BACK! ALL ABOARD THE TRAIN TO POUND TOWN...

[jony]

Great video. I love Mike Pound - he is my favorite person on computerphile

[Xero]

Switching off is probably not what anyone has ever done that clicked on a Computerphile video, especially with Mike.😁

[friewire]

I have an exam in computer security coming up soon. These videos are golden

[bhexric]

I didn't even know HMACs existed until I came across them at work - it's good to know a bit more about them.

[kingofshorekishore]

its said if you can explain something in simple words, you dont understand the concept. But you sir are just a marvel. Thanks alot.

[brandonbirchall]

Love this series, but could you please cover Elliptic curve Cryptography? I feel like this channel explains everything the best, so it would be much appreciated.

[rogervanbommel]

Well, do not forget AES CBC is weird, it’s a block cipher, though because of the XOR chaining you can also do this there

[y__h]

Someday you should do a video on AEAD, which is more modern than plain old Stream cipher.

[dlovegrove]

I feel like these videos always just scratch the surface and don't go in depth too often. I really would like to see some in depth content for the loyal subscribers!

[КириллРагузин-рв]

The seccond method can actually be just as secure if it is guaranteed that none of the valid messages can be a simple concatenation of 2 or more other valid messages. The easiest way to guarantee it is just to always put a total message length block somewhere inside the protected message. This method is a little bit faster than the HMAC.

[a-hj]

This video seemed to end without much of a conclusion...

[lynxtouch]

You're helping me so much studying for my Security+ exam!!!!