Simplified Data Encryption Standard (DES) Example

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One of the most concise, thorough, and easy to understand explanation of DES available to the public!

mrdcstarchild

Thank you very much. This video is much better than what my professor explained covering the whole week class.

StrifeHale

This is the best approach to understanding is by hand, pen and paper. Thank you

lww

Am confused about S-DES before watching your video. Thank you for your briefly explanation and example.

kefalegetahun

Really the best explaination of DES i could find on YT

CODINGisFUN-xzem

came here to learn how to find IP inverse only for him to give it as homework. bruh.
found the answer though: IP inverse is: 41357286. It's the position number of each digit in IP (26314857)

vaiebhavpatil

i dont understand how permutation works. what is the logic of the bit rearrangement? why is 3 bit going to first position? in 64 bit we say the first 4 ODD bits go to the 4 last vertical boxes of the last column but i cant understand this

ryokag

Very well explained, clear, and concise

videogamepro

Really the best done having an example. I loved it.

zahidulislam

your explanation is amazing and easy to understand ✨

mohammadahmedragab

Nice lesson, thank you very much.
I got one question in S_BOX,
After performing exclusive OR operation which part goes to S0 and which part goes to S1, or we can choose any part for S0 and any part fo S1?

abubakarhaphidh

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