In this video we will be understanding the following 1. What is DES - Data Encryption Standard 2. Algorithm behind DES 3. DES is explained with an example.
Пікірлер: 79
@erickulee9183 Жыл бұрын
Look! Everyone on here. From this video, I realized if you don't understand any form of instruction, complex or simple (math, science, logic, etc) it is not your fault. The burden of you understanding a section of instructions or lesson lies largely on the person teaching. Thank God for the internet. If something is not too from your instructor, try learning it from other sources until it is clear. It worked for me. Cryptography has been like a mystery over my years in cyber security. THIS VIDEO right here proves my theory. "It wasn't my fault". @Satish CJ! You've made my years! 🤣 For the rest of my life, I can explain DES to anyone in my sleep! Sorry, this is a long comment.... but AMAZING.
@SatishCJ Жыл бұрын
Glad to know the video helped. I understand it's a long comment.. but it's the best comment I have had so far. Thanks for the nice feedback
@muhammedozen26992 жыл бұрын
That's literally the best tutorial on DES I've ever seen on youtube. So practical and very detailed. thank you so much sir. I highly appreciate your work
@kensenior820 Жыл бұрын
In my opinion, this video is much easier to follow and much more detailed than other explanations of DES available online. Thank you.
@QuickFlicksx Жыл бұрын
Best Ever Tuotorial on DES, best ever literally! - idk why is this so underrated....
@monasharon2347 Жыл бұрын
Sir this is the best video for DES!! Thanks a lot for helping me at the last min of exam preparation :,-)♡
@SatishCJ Жыл бұрын
Glad to know the video helped. Thanks for the nice feedback
@VoidExistence10 ай бұрын
I thought the comments exaggerated, but this video is *actually* better than the ones by million sub channels. Extremely easy to follow and very practical. Sir kindly never stop making these, you're a blessing
@SatishCJ10 ай бұрын
Thanks for the inspiring feedback. Glad to know you liked the lecture
@dongdau11512 жыл бұрын
This is the best tutorial on DES. Thank you sir, really helpful explanations.
@Lamadora808 Жыл бұрын
... this is exactly what I needed to help me understand DES, thank you for sharing this video.
@dananjayafdo78552 жыл бұрын
man I appreciate ur time to made this vdo series, no matter how many views u got or what, this information r valuable.cheers!
@siddaramannas66 Жыл бұрын
one of the best lecture on DES on youtube. Thank you sir.
@SatishCJ Жыл бұрын
Wow, thank you!
@bhuvanb22043 ай бұрын
Great Video. Made it very easy to understand
@SatishCJ3 ай бұрын
Glad it helped!
@shreyatarwey7520 Жыл бұрын
This video is soo helpful, You need much more reach and appreciation than this, You literally helped me out a lott!!! Great work thankssssssss
@josiah481211 ай бұрын
Sir your patience is remarkable, thank you for this!
@SatishCJ11 ай бұрын
Glad to know the video helped. Thanks for the feedback
@chickduck75222 жыл бұрын
Thank you for the effort you put into detailing every step ! I have to code an implementation as part of a school project and it is very very helpful !
@hemangisatam6750 Жыл бұрын
Thank you sir ...very well explained ...one of the best video on DES algorithm
@SatishCJ Жыл бұрын
You are most welcome. Thanks for the feedback
@nadarjanjeyakumar50633 ай бұрын
Sir. Very nice. Patience in explaining step by step. Long video, but I deserved the time for explanation.
@gavazzaangelo10 ай бұрын
Sir, thank you so much for all the effort and didactics you put on this work. I was trying to find a video that I could understand DES for days and this one saved my assignment and my student life! lol greetings from Brazil!
@SatishCJ10 ай бұрын
Glad to know the video helped.Thanks for the nice feedback
@natarajanyuvaraj5265 Жыл бұрын
Neat explanation. Grateful I found this first among all other videos.
@SatishCJ Жыл бұрын
Great to hear!.. Thanks for the nice feedback!!
@vishaalclips5 ай бұрын
Thanks a lot for this Sir, very well done lecture :)
@SatishCJ5 ай бұрын
Most welcome! Thanks for the nice feedback 👍
@Ramadeviramadevi-hy3vq Жыл бұрын
Such a wonderful explanation with an example. Thank you so much
@SatishCJ Жыл бұрын
Glad it was helpful!. Thanks for the nice feedback!!
@user-sy5kp8pe4c4 ай бұрын
This tutorial was awesome!!
@SatishCJ4 ай бұрын
Glad you liked it
@suryaveeraraghavalu8250Ай бұрын
superb
@user-nz4vf8mk3n3 ай бұрын
I enjoyed this. However, I'd like to ask the following questions: 1. How were the values in the S-box table generated? 2. How do you carryout the decryption processes. Thank you.
@aaronl84437 ай бұрын
sir you are very clear on this ty!
@SatishCJ7 ай бұрын
Glad it was helpful!
@akheelakhanum61836 ай бұрын
explained in a very simple way sir.. thnks a lot
@SatishCJ6 ай бұрын
You are most welcome
@kandi2440 Жыл бұрын
Really outstanding DES tutorial.
@SatishCJ Жыл бұрын
Thanks for the nice feedback
@ssambadenis94012 жыл бұрын
Geniusly Executed. Thank you , This has been very helpful
@anandrajam75562 жыл бұрын
Very very helpful video, thx for this
@loganathavishnubalaji97132 жыл бұрын
Thanks for your good lecture. Pls post more videos about cybersecurity
@kyrostsa11803 жыл бұрын
very helpful video!
@thebigvusi33773 жыл бұрын
You’re the best man 🙏🏻🔥
@mimirizaldo24124 ай бұрын
Thank you sir!! You've saved me from tutorial hell
@SatishCJ4 ай бұрын
Glad I could help!
@2105avalanche2 жыл бұрын
Thank you sir, Very helpful explanations
@mmllllmm56719 ай бұрын
THANK YOU SOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO MUCH ❤❤❤❤❤❤❤❤
@miras650811 ай бұрын
there is a mistake in the video. when generating the 56th key from a 64-bit key, the 21st bit will be 0, not 1
@SatishCJ11 ай бұрын
If that is a mistake.. Thanks for pointing it out. I might have missed it while scanning a big string of 0's and 1's. Really glad that you are able to spot such errors. Thanks for the correction
@miras650811 ай бұрын
oh, sorry, it’s not a mistake, the key is correct. it is a typo in PC1 table. on the last row instead of 21, there should be 12 ^^
@miras650811 ай бұрын
and because the value of 12 and 21 bits are different, I thought it’s an omission in calculations
@ipsitoarko98722 жыл бұрын
Thank you so much sir!
@estifanoscheka2091 Жыл бұрын
Thank you!
@ameypatil26722 жыл бұрын
Really helpful!!
@raghava85612 жыл бұрын
Amazing!
@seriousname-uh6lq4 ай бұрын
in 8:53 the second part of the key+ should be 1110011 instead of 0110011
@premagrawal5658 Жыл бұрын
the permutation table is provided in the exam or do we have to carry the tables with us.....and is this permutation tables is common for all problems or different
@tesfalegntadesse37372 жыл бұрын
Is the value of PC-1 table and pc-2 table constant or given?????? additionally the value of iteration to left shifts is it constant ??? please i need your help to understand!
@maryjanedizon92752 жыл бұрын
Exactly, I also wanted to know. And, searching through the web and some books, he uses the same tables. So, I guess these tables are the convention. There's also a Wikipedia article on this: en.wikipedia.org/wiki/DES_supplementary_material#Initial_permutation_(IP)
@jubinm007 Жыл бұрын
Sir could you please explain the design principle of s box & p box
@emannadeem290 Жыл бұрын
bestest
@anubhav57094 ай бұрын
BBS WALO YAHA ATTENDENCE LAGAO
@user-qs4oc8yv8f2 жыл бұрын
I need help in speck lightweight encryption and key generation thank you so much
@dhadithanujachowdary64223 жыл бұрын
Sir,These pc tables are of pre-defined or else we can take of our own
@hemanthreddy2485 Жыл бұрын
Aced it.
@deepikavarma96952 жыл бұрын
sir should we learn all pc tables???this is my doubt sir
@inoculati0n2 жыл бұрын
Question: if there are 64 bits in the key and only 56bits on the PC1 matrix, do the remaining 8 bits on the key just not get used?
@nathansimon713 Жыл бұрын
yes they are not used
@saigeeta19932 жыл бұрын
Sir please share DES notes
@STUDYTALK1102 Жыл бұрын
How to write pc 2
@assemabujahal625 Жыл бұрын
Sir, I need the powerpoint file, please
@dennisnjeru39952 жыл бұрын
What are the steps for DES decryption?
@ak.karimzai Жыл бұрын
same to encryption just you need to encrypt decrypted text with same key, in which you encrypted
@mohammadshornab7104 Жыл бұрын
Sir, who invented this? Please let me know 😡
@guganshankar47222 жыл бұрын
That's literally the best tutorial on DES I've ever seen on youtube. So practical and very detailed. thank you so much sir. I highly appreciate your work