NETWORK SECURITY - DES (DATA ENCRYPTION STANDARD) ALGORITHM

DES algorithm follows the Feistel Structure
Most of the Block cipher algorithms follows Feistel Structure
BLOCK SIZE - 64 bits Plain Text
No. of Rounds - 16 Rounds
Key Size - 64 bits
Sub Key Size - 48 bits
No. of Sub Keys - 16 Sub Keys
Cipher Text - 64 bits
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[@kikoooooo4130]

Very clear in depth explanation of DES, thank you for your time and effort sir. I appreciate it.

[@sundeepsaradhi]

Hi kikooOOoo thanks for watching my sessions and supporting our channel

[@ikkurthimohammaadh4700]

@@sundeepsaradhi sir I want your help in cryptography and network security

[@ikkurthimohammaadh4700]

@@sundeepsaradhi please reply me

[@Cartoonlovers2076]

Tq very much .....very helpful sir

[@soubarnobanerjee8257]

The best tutorial I've found for DES. Thanks a lot with lots of respect sir!!

[@sundeepsaradhi]

hi Banerjee thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@kibugashaw24]

The best tutorial I've found for DES. Thanks a lot with lots of respect sir

[@fatimarizvi98]

Highly appreciate your Hardwork Sir! There should be not dislike for this man he is teaching with heart. Respect from Pakistan :)

[@michalbotor]

thank you for this in-depth explanation of the des algorithm. i hate it when there are these "explanation" videos that use some analogies, wave their hands, have all these flashy and well-made but distracting animations, and avoid maths as if it were fire, and in the end leave you as clueless about the thing that you came to understand as you were before you started to watch the video. i very much prefer your style: a smart man with a marker in his hand, a white board on his wall, and a few printed diagrams and tables, throwing all that detailed, well-thought explanation of the complicated topic at hand at you, forcing you to think, and rewatch, and think again, and feel dumb sometimes, but in the end, once you're done with the topic, it doesn't just make you feel like you've learnt something, you know you've learnt something, because you can feel the pain of it sinking in your head. and it is so satisfying. now i actually know how this des algorithm works! thanks!

[@ajaykudva1645]

Thank you sir for your time. Teachers like you deserve a good teaching position in colleges with handsome salary. I will really help me in my exams. Thanks again!

[@akshaysingh1914]

Awesome lecture no words for it , I confused with my book (forouzan ) to understand it , sir you play a very important role in my concept .I found your cryptography lecture is awesome now I can read my book again for better understanding , thank you sir keep doing...such great job.

[@nivasanbabusrinivasan1086]

I'm learning this in my course at the moment. I have to say, I did not understand at all what my lecturer was talking about, but your explanations were so much more clear and in-depth.

[@anualexander1256]

Sir, I am from Kerala. I am saying this from the bottom of my heart, you are literally great and respected for your effort for making such an easy and understandable thing to all the beloved students.

[@ShaileshBhise]

All Videos of Sundeep Saradhi are really helpful in study. Great Efforts Sir. Really Thankful to you from bottom of my heart...

[@sundeepsaradhi]

hi shailesh thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@subashiniselvarajan8468]

Really useful. The first time I understood DES algorithm in so many years

[@bandalokesh678]

Super sir Mind pothunondiiiii lopala.... 😱😱

[@AshishSingh-vv2ro]

Excellent sir very clear explanation of DES. Thank you sir

[@ravalil6218]

Thank you sir ...to I wrote exam very well because of you sir thank you very much sir...

[@callum-abbas326]

thanks after 4 lectures of 90minutes each what i lean is nothing and all things i learn in 1 hour video thankssssssss......

[@snj4444]

Clear and well explained. Keep this going Prof. Heartfully appreciate it. Great Work !

[@baala3]

Wow clear explanation of DES in youtube 👏

[@RamKumar-dm6es]

NO one explained as good as you Sir ....Awesome content

[@sundeepsaradhi]

Hi Ram That's very nice to see your comment and thanks for your support towards our channel share our channel with your friends and keep following our channel

[@karm_yogi-r]

A very clear and Detailed description of DES!!. Amazing!

[@sundeepsaradhi]

hi shivam thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@TheVinitarantino]

Well done! Nice explanation: easy and understandable.

[@sundeepsaradhi]

hi vinicius Thanks for your interest towards our channel and your support towards our channel.

[@TheAthenan]

It's an amazing video for learning DES.Thank you very much :)

[@sundeepsaradhi]

hi karadeniz thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@kuda9703]

thank you sir, i have a computer security presentation tomorrow on DES algorithm. i am done with your explanation

[@sundeepsaradhi]

hi Kuda thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@srigowri4871]

awsome explation sir i got a clear idea on DES algorithm

[@sundeepsaradhi]

Hi sri Thanks for your interest towards our channel and share my sessions with your friends and keep following our channel and don't forget to subscribe to our channel.

[@learningtech3605]

Understandable explaination I liked this lecture very much

[@rudrakh]

This is the best tutorial for DES on the internet, if seen strictly on the basis of clarity in the course material. Sir it would be awesome if you could share the slides/block diagrams you were pointing to in the lecture.

[@sundeepsaradhi]

hi Rudrakh thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@srijanidebnath3691]

Thank You Very Much for your great effort Sir and explain all the steps elaborately.

[@ANKAMJANAKIRAM]

Sir, I saw many playlists of you sirr..... But this is the masterpiece 👌

[@kazimhussain9366]

Very clear and thorough explanation. You saved my exam. Love from Pakistan!!❤️️❤️️

[@bathalaradhika7744]

Well explained and best video for DES

[@abhinavakrishnageepalem4535]

Best explanation on DES,, thank you so much sir

[@sundeepsaradhi]

hi krishna thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@j.kanishkhajai8819]

you are god level sir. Excellent explanation. May God bless you.

[@velvijaykum]

You are a great teacher indeed. A very clear explanation. Much appreciated. Thank you.

[@AYUSHNIGAM97]

Best DES explanation on KZbin

[@sundeepsaradhi]

hi Ayush thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@devikayannam1642]

It is very much helpful sir.And you have given a very good and depth explanation .Thank you so much for your effort.🙂🙂

[@wiilcomando4439]

Sir I'm foriegn and I get more Benefit for this lesson and also More lessons I saw so keep doing it I will be with U sir drop more vedios About CSE we are waiting for U 👏👏

[@eugenesri3248]

very clear explanations sir..

[@seethalag9204]

Thank you so much, sir! That's a perfect explanation. . The best explanation for DES!

[@sundeepsaradhi]

Hi seethu Thanks for your interest towards our channel and share my sessions with your friends and keep following our channel and don't forget to subscribe to our channel.

[@ShivamPanchbhai]

28:12 🤣🤣🤣🤣 subscribed !!!

[@bonsuadjei-arthur2091]

Its open and clear. I think this is a clean elaboration of this algorithm.

[@Tech_Vloger_from_village]

Very clear in deapth explanation of DES 👍

[@yusuftahir3881]

sir , thank you very much for taking your time to explain it.

[@sundeepsaradhi]

hi tahir thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@nagendrakumardvs5633]

Very Detailed Explanation, very nice

[@harikakoormala7476]

thankyou sir,very helpful..for my xms as i can write on my own after understanding the concepts..

[@puneethsatwikvemula561]

The best and complete explanation I found on youtube, thanks for the effort sir!

[@maheshkurtkoti5241]

I am really impressed how clearly you explained each and every steps sir. thank you very much.. S-Boxes are very important for security.

[@areefa6268]

Explained it very well

[@smexify_7]

Hard work in presentation, knowledge. 👍

[@sundeepsaradhi]

hi Rishabh thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@ashishjoshi222]

Appreciate your patience while teaching !!

[@EhrarH_]

Cleared my all doubts and your explanation is very clear and easy.Thank you so much sir

[@aliazlanaziz]

Thank you so much sir for your dedication

[@preetyt7153]

Vera very very useful amazing sir ....thnx a lot,🙏

[@nehasehta7762]

It is simply the best explanation of DES😆👍👍

[@sundeepsaradhi]

hi neha thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@amruthainukonda2522]

Excellent explanation👏 very clear...thankyou so much for your help

[@studytopass9064]

thanks for making such a detailed video! Appreciate your efforts so much sir!

[@gowthamselvaraj7793]

Your explanation was always easy and interesting❤❤❤...and better than our lectures😂😂

[@hasibahmad3660]

Profound and precise explanation

[@theOptimisticCoder]

Best video for DES explanation.

[@naveenminhas6669]

very nice and clear explanation. Now I will be able to implement it.

[@souravray7448]

you know what are you saying sir . wonderful .

[@bansipatel9083]

Thanks, You Very much Sir, for this wonderfully detailed lecture about DES you cleared my every doubt from DES. Thank You, Sir.

[@Nariman-q4j]

Thanks so much sir Very good representation

[@trymee3856]

Sir, you teach better than my teacher in my school XD. Thank you! your videos really helped me to understand DES better. My school slides are useless. LOL thank you

[@rinkeshranpariya887]

Well and deeply explained tutorials ... Thank-you sir

[@alexrr9264]

Best explanation of DES. Thank you very much sir, you've made my life much easier.

[@RiyanshikaVideo]

Very clear explanation of DES algorithm. Sir it would be great if you can post a video of DES algorithm.

[@sundeepsaradhi]

hi Ankita thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@natsudragneel8305]

Fantastic and nice explanation and the presentation was also nice which helped better to understand such a tough content

[@haneeshmondrety1979]

Great Job Your efforts helps lot of people

[@adhithyaamal]

Well explained sir, thank you

[@rohitprasadkushwaha5694]

very nice explanation and depth wise ,i appeciate you sir

[@athisii_ekhe6167]

Great explanation. Thank you.

[@theAmanMathur]

thank you sir i was little confused when i read the book and ur explaination helped me a lot..

[@sundeepsaradhi]

hi aman thanks for watching my sessions. Thanks for your interest and support towards our channel. Keep following our channel.

[@sriganeshbalasubramanian1506]

Thank you so much sir. U are a great teacher 🙏🙏🙏🙏🙏🙏

[@sridevalpally5145]

Excellent explanation!

[@sundeepsaradhi]

Hi Thanks for your support towards our channel share our channel with your friends and keep following our channel

[@gajulachaitanya5597]

Excellent sir

[@sundeepsaradhi]

hi chaitanya thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@sp3ct3r71]

thnQ for this crystal clear video..

[@tarunsingh1929]

Best way to study cns thankyou ....

[@damarakularajesh2224]

Thank u so much sir for doing this video it really helps to me for exams

[@aminhoney3644]

Good Detail explanation

[@gwalaniarun]

You deserve bharat ratan...aap mahan ho

[@hafizarslan8741]

Thank you very good explanation.

[@ruchirdixit4780]

Great video sir..thank u very much!!

[@georgeofsindrila]

Thank you sir, very good explanation of even the smallest procedures.

[@thanusha7354]

great explanation sir !! Thanks a lot :)

[@DeepakKumar-si7nm]

ALL CLEAR SIR THANK YOU VERY MUCH SIR

[@manchuparkaviks2403]

Best explanation so far!

[@prashanths4455]

Sir, I am saying this from the bottom of my heart, you are literally great and respect for your effort, making this DES such an easy and understandable thing to all the beloved students. Thank you very much Sir.

[@drssmanikandasaran6058]

Dear Sundeep Saradhi Kanthety Nice Lecture on DES and understandable... if you also post the decryption it may help more to the followers... Anyway I have some clarifications on the DES Encryption 1. Permutation: in what transposition cipher the permutation is carried out? 2. is there any order or formula to fill the s-boxes? 3. differentiate permutation and inverse permutation? 4. why it is 8 s-boxes? Any reason. For question 1 and 2, if there is no proper method or technique is to be followed means... How this can be noted for Decryption in receiver side... Hope you understand my questions...

[@sundeepsaradhi]

Hi Actually due to security issues there is no explanation of decryption process. Comming to s-boxes all are filled in random from 0 to 15. Without repetition. Permutation and inverse permutation are predefined in algorithm so we have to follow the same while implementing.

[@vidyalakshmi2770]

Great video ..I was literally struggling to understand DES , but then came across your video. Great effort sir, hats off!

[@manojsheoran9356]

thankx sir for explain DES ....its help us ....exam is soon in November

[@shewangizawbogale3036]

this is very Nice

[@ExploreWithVikasMadaan]

Wonderful work, thank you sir for sharing your knowledge on this topic in detail...

[@aravind1772]

all doubts resolved...thanks sir...plz upload more videos for information security

[@sundeepsaradhi]

Hi aravind r thanks for watching my sessions and definitely soon I will upload all the concepts of network security. Keep following our channel.

[@moxin1926]

Very well explained

[@saikumarallu417]

U worked hard sir .... Nice explanation

[@madeel7036]

Great Job at explaining it .... I really appreciate the hard work you put in ..

[@aryashailesh12]

Best tutorial on DES... Thank you sir

[@sricham4718]

such a great video thank you sir

[@jonathanlau8306]

thank you sir!goodluck to my MidTerms!

[@kishanikandasamy]

Great Work ..Thank you

[@sumeetsondhi87]

mind blowing.. excellent... saluate to u sir

[@SDIVYAMIS]

You were so sweet enough to spend this much time for us. thank you very much sir !