Lecture 1: Introduction to Cryptography by Christof Paar

For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com.
The book chapter "Introduction" for this video is also available for free at the website (click "Sample Chapter").

[@kungisans]

I put youtube on autoplay, and woke up to this lecture...it's quite informative

[@theanswer3sixers]

Prof. Paar I don't have the words to thank you enough for these lectures. I took Crypto as an optional module during my conversion MSc in Computer Science and I felt quite challenged/intimidated by the content. Your lectures helped me enormously and I felt very confident for the final exam where I ended getting a first class mark in a difficult examination. Thank you so much once again!

[@the80386]

whoever made the image stabilizer algorithm, please redo it...when you're not drunk.

[@betlamed]

+zeebazu You know what would be cool? If the anomalies in the stabilisation were an encrypted message.

[@douwehuysmans5959]

Balmer peak bruh

[@Tadesan]

80386 go back to home-school.

[@zackmarshall4217]

hahahaha

[@jfangx]

KZbin is home schooling.

[@mr.shanegao]

Classification 0:00 basics/setup 18:00 substitution cipher 47:00 attacks 53:00

[@SoulWinningButterfly]

You deserve so many more likes ❤❤❤

[@waheedullahasghari5124]

Before and After graduating from my school up to now that am doing my Masters in Information Security, I had never ever attended such lecture from any professor in my entire life, It was really, really AWESOME. I really liked that due to the one who is giving lecture have a good knowledge of the topic, Huge love and thanks from Afghanistan, for sharing such lectures.

[@aryansaeedi7618]

You're the best thing that has ever happened to the U.S.'s education system!! thanks for saving many student's lives, sir!

[@1EddyG]

Great lecture! Approximately 2 hours ago i had no clue such lectures on topics like these even existed! But for the part 1 hour 17 mins it feels like I've attended a lecture on cryptography! I feel great! Tomorrow or day after another lecture (Thumbs Up) !!

[@hassamrajpoot8397]

So ,I downloaded a book for teaching me cryptography yesterday and I woke up today searching for a lecture and surprise surprise , it's the same man who wrote that book . The way he teaches has impressed me more than the book. Thanks.

"Who thinks this is secure and wants to be kicked out of this university", hahaha laughed at that part

[@robberywills3257]

looking at this video really gives me the motivation I need for school. Honestly, thank you for this video.

[@66Narendra99]

Zee Germans are excellent!

[@jerrymahone335]

tell that to Trump

[@Skyscraper21]

Zeeenk yuuuu werie maaaatsch

[@18pritamchandra]

Oh you mean "Zermans"? 😁

[@dingsanghacaspa3575]

Thanks mr christof for releasing this lectures on a platform like this where we can stream free. I am following from Cameroon. You inspire me Alot. Working hard to be like you.🙏

[@fernandoschuindt1665]

Learn Cryptography from a German guy, how cool is that?

[@greywolf271]

Even better would be going back in time and working with Alan Turing. Just when brute force attacks were beginning to shape the world

[@fernandoschuindt1665]

and now you can learn why

[@tabraizahmad7876]

hahahahahahaha

[@mohamedabdelkhalek4298]

I think it will be cooler to learn it from English guy LoL

[@KPater-mf4je]

@@simplepotato24 The ENIGMA was cracked even before Turing, by a team of Polish scientists. The Germans tried to improve the ENIGMA machine, and it wasn't long before the British cracked that as well. Sounds about as strong as a chicken-wire fence.

[@anasacmh]

I'm Iraqi software engineering student in the last year, I have much interest in cryptography, these lectures will be useful to me 😊

[@jsw060943]

Dear Professor Paar, This is my third lecture. I am so impressed with your series, and teaching style that I plan to go through the series. I have even bought your textbook. I am surprised that you did not talk much about the important historical implications of Crypto - the disastrous Zimmerman Telegram in 1917, Enigma, the British poem codes of WWII - that were so easily broken by German cryptanalysts - or the reuse of Soviet one-time codes, which led to revelations about the Soviet spy networks in the US and Britain. While you mention Enigma In your lecture, you don't even mention military or intelligence communication in the use of Crypto. During the war, my father (who had studied in Germany) was in charge of a US Army mobile crypto unit which was tasked to decrypt Wehrmacht radio traffic. The ciphers were changed daily. A Luftwaffe weather plane out of Norway broadcast the weather parameters from the North Pole every morning. The Allies sent a plane up to the North pole to get exactly the same information. Comparing the ciphertext to what was likely to be the plain text, it took my dad's cryptanalysts less than 20 minutes to break the cipher. This was so reliable that when the American Air Corp offered to shoot down the German weather plane, they were persuaded not to do so because of the value of the daily reports to the Allied cryptanalysts.. Thank you for your excellent lectures. I love that you break into German sometimes, and even quote Goethe!

[@KPater-mf4je]

That's interesting -- but it sounds very military-oriented. Might be a good idea for a lecture series on 20th-century military cryptography (don't military academies teach that? I'm not sure). You seem to have a lot of info on the subject, maybe collect more facts on the topic and present it to a lecturer or post it on a blog? It could be a great way for non-CS-students to be introduced to cryptography in a historical context. On Khan Academy, the lecturer sometimes goes into cryptographical history, but also gives visual examples of cryptography (as in, how some basic methods affect pixels in an image). It's a nice change from the usual dry crypto lecture (not talking about Paar's -- his series is great, was recommended to me by a fellow student).

[@blackcanary8531]

@@KPater-mf4je are you learning from khan's academy?

[@gracegrace8723]

I'm fortunate getting in touch with *Ronaldhacks01_ on ||πsta* and he made the recovery of my non spendable Bitcoin back to Spendable successfully. He's Legit,.,.

[@darkdante2k4]

Thank you Professor Parr for these wonderful lecture videos. They help me greatly in my studies!

[@anusaxena971]

Professor Paar, thank you so much for making these extremely interesting lectures. Your lectures make crypto ' within reach' !! In addition you sound a very brilliant person !!

[@egonzalez4294]

When you have to watch this because your educational system sucks :(

[@uselessgamer7839]

sex

[@jayant9151]

@@uselessgamer7839 no

[@jayant9151]

@Shah Reyaz yes

[@KidAFateen]

Shah Reyaz these are awesome

[@giveaway4002]

Sometimes when u r super interested in it.. and it's ur hobby

[@Shinta007]

After this lesson, fell in love with Cryptology. Thanks for educating us!

[@thewitcher5279]

you still love this shit ??

[@sing759]

i used to attend prof christof Paar's lecture once at RWTH Aachen,, he talked about how to decrypt satellite phone which was one of this students work .... so amazing... and I am still watching his 24 playlist lectures till now a day :) thanks Prof Paar

[@mattgraves3709]

This is outstanding. I am following with your textbook as I did/do Algorithms by Robert Sedgewick. I have a feeling, like that instruction, this will prove timeless.

[@stand4reason]

Thank you Dr Christof. Very enlightening, appreciated and helpful in EU-GDPR compliance work

[@nemesisc6122]

Definition of cryptography here: 23:18

[@Integralsouls]

10 freaking years but still the best lectures on cypt. on u tube

[@blake469]

Have you ever heard of "the kindle"??? lol

[@TheMR-777]

I am a Computer Science graduate, currently planning to study abroad, specially in Germany or any other EU state. I always loved the cryptography, and once I learned about DES, and AES, they just blew my mind, and I love the diffusion they cause. I stumbled upon the 7th Lecture of AES, as Galois Fields were a bit of a mystery for me. That just hooked me up, and now I will watch the whole series IA.

[@CryingMG]

Let's not forget that Germany invented the Enigma machine. Lots of brilliant mind there. Great series Mr. Paar. Will watch it all!:)

[@jithunniks]

Thank you Professor for this wonderlful lecture. I could not learn cryptography properly when I was in college. You gave me an opportunity to learn it once more.

[@meganskelton7452]

Thank you so much for releasing these, there are a massive help!

[@noormuhammadmalik6191]

Love these, love the content, love the teaching. It's awesome! Thank you SO MUCH sir!

[@denisehill4115]

I really enjoyed these lectures. Thanks for uploading them.

[@czekiri]

The best course in cryptography : clear and easy to understand as the title of his book says it ! Thaks a lot herr professor !

[@muhammadtariq2571]

A genius professor i have ever seen in cryptography

[@PolkiSaMalutkie]

Very interesting, and well explained! Thanks for posting this series.

[@monicagothers1729]

Thank you so much for your lectures!! Super helpful and love that I can find it on KZbin!!

[@debralegorreta1375]

Thank you for sharing your cryptology lectures with us, Professor Paar. Best regards.

[@adrianabreu1565]

I really believe that you are a great teacher, great job.

[@marwamimouful]

thank you so much Mr.Paar for releasing your course on youtube, this is really helpful :)

[@The4th-Man]

wow.. i love this guy.. thank you Professor.

[@matterwiz1689]

When the lecture is in English and he hits you with that "Außendienstmitarbeiter"

[@haimkupershmidt4849]

Excellent lectures! Danke sehr, Prof. Paar!

[@user-fi2kv7uv9n]

Thank you very much your lectures were both educational and fun to watch. You really made a difference for me

[@vijayakumark5190]

Feel privileged to learn from such great teacher...Vijay from India

[@125_yash6]

Bro try nptel it's good too

[@kirtiseth9783]

Very very good and helpful lectures. Thank You Prof . to make these lecture freely available to the world thanks a lot

[@simonfanuel6692]

helpful in most part and thank you for making it free and open to every everyone.

[@redelization]

fantastic. anyone else with no formal computer science background and thinking about going into this field? I'm graduating history major with a major passion to learn!

[@nicholas123lotr]

Awesome lecture. i'll watch the rest back to back. keep up the good work

[@alexba1771]

Nice, I have seen all of your lectures! THX for this great job

[@aneeshprasobhan]

Thank you, great lecture. Our uni. professor recommended this lecture series.

[@slimjim178]

After working in the field for a long time now, you do a great job delivering the details and your approach is very good. I particularly like your delivery of the material. With Cryptography being such a dry subject it isn't easy to deliver without being a little boring and you pull it off quite nicely sir.

[@PamirTea]

Thank you for the lecture series. I really appreciate it.

[@arrowhead697]

Very informative and engaging lecture! Thanks!

[@PFFF785]

Really nice and useful content, i’m really happy you had this brilliant idea, of recording this nice course! Thank you very much sir!

[@f0restwow]

Well, this class I awesome. I remember getting though my Data Security Class in Masters with this. respect !!

[@firstnamesecondname5341]

Watching this in lockdown 2020 👍

[@hoshanggunner]

Thanks to you, I topped in Cryptography in my college. :D

[@hoshanggunner]

Graham Nichols I went on to be a software engineer in big data. And also did my masters in big data. I’d love to do my PhD under this professor.

[@felipelopezhernandez2666]

Thanks for share your knowledge .! Great course!

[@younglatino134]

Good concepts man just finished watching this and look forward to finishing up the series.

[@jyotiumedbarekar3875]

Thank you so much sir ,the lectures are very useful and nicely explained.

[@etnkishore]

Thankyou very much sir for this wonderful series of lectures

[@thebudkellyfiles]

superb. Thank you. I am hooked on crypto. World class instruction for free!

[@denizokumus1777]

Oscar enjoys these lectures very much.He learnt a lot.

[@smrititiwari8243]

thanks a lot.. I was reading from random sources and this simple yet beatiful lecture cleared all my doubts , I really wanna do all the vedios :)

[@bstemic3623]

Thank you Herr Dr. Parr I enjoyed your lecture.

[@diencai1812]

Watching this in 2022! Thank you for making this available professor

[@kittie4269]

thank you prof. Parr. I have fallen in love with cryptology recently and this really helps grow my knowledge on the subject. -regards, A.C, Sep. 18, 2022.

[@vgdevi5167]

Same here, wha ru studying?

[@lordmushroom723]

I love how excited the professor is, I'd love to sit in that class 😆

[@Teutathis]

His book is the go-to curriculum for learning Cryptography so Id be surprised if he wasn't excited xD

[@asherzyke]

Dear lord, this is a university lecture not a French new wave film, what is with this unsteady camera?!

[@lilxandiego6945]

Benjamin Z. i know but like you can hear him so it’s fine lmao it’s not like you need to see much.

[@yc5117]

"video stabilization"

[@Mindraker1]

The later lectures smooth out.

[@explorewithashokgunturu]

It is so informative and interesting. I really loved it. Thank you sir

[@rayhan3918]

Excellent teaching style. awesome

[@blackolotus]

My favorite professor in university.

[@rosesushmit5861]

Thank you, Mr. Paar. It's too cool. I love it. I'll express something in my native language. "সেরা"

[@TheR4Z0R996]

Beautiful lesson, congratulation prof! :)

[@stefjwin]

Really happy to have found these courses... auch gut wenn ich auf Deutsch lernen kann!

[@D3w10n]

This is really good lecture, I understood everything and I have only the basic knowledge of cryptography.

[@D3w10n]

@@samuelfofana9752 programming

[@MikhailFederov]

I mean he didn't go through any technical details. This is more of a ELI5 intro.

[@jamesthurlow466]

Thanks for uploading this!

[@QuantumEg]

You are awesome watching from Egypt :)

[@caaussie1605]

Thank you. Greetings from Australia 🇦🇺

[@michalbotor]

"alice, bob, and" "ev..." "oscar" o.O

[@sonnyyombo2230]

Thanks so much for this. It is very informative.

[@Alumni275]

THIS IS AWESOME, thank you bro.

[@matrixstuff3512]

Maybe if I'm drunk the video will look normal? But the lecture is excellent, thank you for putting this online!

[@dr.shemalatha7636]

prof. good explanation. concept is clearly understood. from india

[@warunausgoda]

Thank you sir. very very helpful to us .

[@muhammadtariq2571]

Thanks for series of lectures

[@acidpunk7423]

Thank you Professor Parr. Cannot afford classes at the moment and these are a monumental resource.

[@kiit8337]

Can a 12 th pass student understand this ...???

[@spiritemporer9027]

I wish I was in the class I love cryptography

[@imaddinamsif]

thanks for sharing your knowledge.

[@Matt-xw1vv]

Watching at x1.25 speed and feels so much more natural

[@alexlu2844]

Thank you sir. You saved my life :)

[@haryantoharyanto7121]

thanks a ton sir, It's greatly appreciated.

[@ThorstenJohannvorderbrueggen]

Great addition to the book ...

[@vijjibabu1]

Excellent lecture...very engaging...

[@kevint615]

thanks a lot for uploading all the lectures. iam talking a cryptography class at the Arizona state University. your videos are helping a lot and very interesting to listen to. Ein wenig zu viel deutsch zwischendurch incorporated aber es kommt sehr gut rueber. Danke noch mal. subscribed

[@asesorestic]

Thanks for the free lesson. Gracias amigo :)

[@1234szable]

awsome.... waiting for the implementation of cryptographic scheme

[@olaiyabukola1358]

i love d lecture.... so informative

[@QuranRecitation-xo8vm]

i am Cse student from pakistan sir tomorrow is my paper and cryptography include in paper sir this vedio help me a lot thank u so much sir really appreciate the way u teach .....

[@nkurunzizaegide]

Excellent lecture. Thanks

[@brz_tech6011]

Prof single handedly saving my degree

[@weebitch1708]

very good Denglish

[@za_limitless]

The best!