How does AES encryption work? Advanced Encryption Standard

Explanation and animation showing how the AES block cipher algorithm works

[teleport]

Tried to litterly find explanation how it works and only you explained the best way possible

[abuk]

- You should really mention more that the matrix multiplication (in mix columns) is not in normal arithmetic, but in Galois's finite field (2^8) arithmetic. Not just say "go look it up", because result with normal matrix multiplication are different.
- And during key schedule you use Rcon(4) in first iteration, which is wrong. You should use number of iteration for the lookup, so Rcon(1). Visualize the XOR with only first byte, in order to be less confusive. Another iteration for next subkey is Rcon(2) in lookup table and so on. -- yeah, having rcon lookup table would also be better, rather than created vectors from the table.
- Other things you are talking about are really clear and i am glad you dedicated time for making this helpful video, thanks!

[alexandrospanag]

Dear professor, thank you from Greece! Your guides are awesome and very in-depth and explanatory! Have a good day and thank you for the amazing content!

[francisonojeharho]

This is the best explanation to AES encryption standard out here

[tridibroyarjo]

Sir, I did love your video and I am just too young to understand your valuable speech as a 12 Years old. But still, I keep a large interest in Computer Science and Encryption Algorithms. Your lectures are really very much helpful. Thank you, sir!

[rithviksaranumasaravanan]

I was trying to understand this AES-256 concept for my startup and thank you sir prof, You help is invaluable.

[jericovillanueva]

Thanks! Really helped alot. Learned more in this 12 mins than my whole semester

[Isabellaa-msdk]

the only video that has really helped me understand AES!! thank you so much

[michellemassaad]

hey professor i am 13 and i am trying to learn how to encrypt using the AES algorithm, this helped a lot to understand the process thank you

[inuniform]

Uh, well, with all due respect… NSA (part of DoD, obv) did not call for replacements to the DES or run the worldwide competition to select the algorithm to be selected to be designated as the Advanced Encryption Algorithm and incorporated into the Advanced Encryption Standard (FIPS 197). That completion was run by NIST, part of the Commerce Department. Now, NSA did decide that, at higher key lengths, when the algorithm is properly implemented, it would be sufficient to classified data up to TS. IMHO….

[enaxorgil]

Easiest explanation I've come across by far. Thanks Sir 💕

[italian_taco]

I am 12 trying to understand AES, this helped! Thank you!

[mikewashington]

Great video. I used the AES algorithm to encrypt and decrypt the contents of a hidden file that stored the password and username of sFTP server used to retrieve data.

[nursyazwani_]

much more understandable and clear explanation rather than my classmate presentation

[ItsMohamedytb]

Hi, thanks for the awseome video . i have on question at 9:41 . why you started rotating the bytes from the second row not from the first one .. is this how the AES works or i'm missing something ?


Edit: in case someone is interested for the answer i searched and found that the first rows keep unchanged 🙂 have a good day everybody.

[adedejiemmanuel]

Thanks for this lesson. I have a question, what cipher mode is applicable in the AES encryption?
By cipher mode, I meant something like ECB, CBC, CTM, GCM, etc.

[qin]

Best video after I struggled on whole YouTube video

[supertran]

I think there’s a mix up at 10:50, not XOR but just adding across

[jarenkilo]

Thank you Shared! This short video really helped to understand the concept in simple way.

[himanshujain]

Best ever explanation of AES!
You deserve infinite likes
Thank you so much ❤️ Sir!