Lecture 1: Introduction to Cryptography by Christof Paar
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- เผยแพร่เมื่อ 24 ส.ค. 2024
- 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").
I put youtube on autoplay, and woke up to this lecture...it's quite informative
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!
Classification 0:00
basics/setup 18:00
substitution cipher 47:00
attacks 53:00
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.
whoever made the image stabilizer algorithm, please redo it...when you're not drunk.
+zeebazu You know what would be cool? If the anomalies in the stabilisation were an encrypted message.
Balmer peak bruh
80386 go back to home-school.
hahahaha
TH-cam is home schooling.
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.
Learn Cryptography from a German guy, how cool is that?
Even better would be going back in time and working with Alan Turing. Just when brute force attacks were beginning to shape the world
and now you can learn why
hahahahahahaha
I think it will be cooler to learn it from English guy LoL
@@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.
You're the best thing that has ever happened to the U.S.'s education system!! thanks for saving many student's lives, sir!
I'm Iraqi software engineering student in the last year, I have much interest in cryptography, these lectures will be useful to me 😊
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) !!
"Who thinks this is secure and wants to be kicked out of this university", hahaha laughed at that part
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.🙏
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!
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).
@@KPater-mf4je are you learning from khan's academy?
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,.,.
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
looking at this video really gives me the motivation I need for school. Honestly, thank you for this video.
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.
After this lesson, fell in love with Cryptology. Thanks for educating us!
you still love this shit ??
10 freaking years but still the best lectures on cypt. on u tube
Have you ever heard of "the kindle"??? lol
Zee Germans are excellent!
tell that to Trump
Zeeenk yuuuu werie maaaatsch
Oh you mean "Zermans"? 😁
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 !!
When you have to watch this because your educational system sucks :(
sex
@@uselessgamer7839 no
@Shah Reyaz yes
Shah Reyaz these are awesome
Sometimes when u r super interested in it.. and it's ur hobby
When the lecture is in English and he hits you with that "Außendienstmitarbeiter"
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.
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.
Definition of cryptography here: 23:18
Let's not forget that Germany invented the Enigma machine. Lots of brilliant mind there. Great series Mr. Paar. Will watch it all!:)
The best course in cryptography : clear and easy to understand as the title of his book says it ! Thaks a lot herr professor !
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!
Feel privileged to learn from such great teacher...Vijay from India
Bro try nptel it's good too
Thank you Professor Parr for these wonderful lecture videos. They help me greatly in my studies!
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.
Same here, wha ru studying?
Thanks to you, I topped in Cryptography in my college. :D
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.
Prof. Christof Paar in Cryptography = Prof. Gilbert Strang in Linear Algebra
(I really hope Prof. Paar reads this comment 🥺)
A genius professor i have ever seen in cryptography
I love how excited the professor is, I'd love to sit in that class 😆
His book is the go-to curriculum for learning Cryptography so Id be surprised if he wasn't excited xD
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.
This is really good lecture, I understood everything and I have only the basic knowledge of cryptography.
@@samuelfofana9752 programming
I mean he didn't go through any technical details. This is more of a ELI5 intro.
wow.. i love this guy.. thank you Professor.
Thank you for sharing your cryptology lectures with us, Professor Paar. Best regards.
Watching this in lockdown 2020 👍
Thank you so much for releasing these, there are a massive help!
In the English literature, "Oskar" is "Eve" (for eavesdropper)
In many German lectures it's usually Eve too (at our university, the professors would use either Eve or Eva). Not sure what Oskar would even stand for lol
nobody mentioned Cryptocurrency as an application of cryptography bcoz bitcoin was invented in 2009 and many people didn't aware of it
Another important reason to make your cryptography public, is for obscuration. If you were the only group using that specific cryptographic method, it would be easy to identify your specific messages. This is why the TOR Project was made public. It was invented by the US Navy, but was then made available to the public, in order to obscure their messages. For example, if another country was doing traffic analysis, it would be easy to identify US Navy messages, if the US Navy was the only group using TOR. Now that millions of people are using it, it has become much harder to identify traffic, from any specific source.
I really believe that you are a great teacher, great job.
Dear lord, this is a university lecture not a French new wave film, what is with this unsteady camera?!
Benjamin Z. i know but like you can hear him so it’s fine lmao it’s not like you need to see much.
"video stabilization"
The later lectures smooth out.
"alice, bob, and"
"ev..."
"oscar"
o.O
Thank you Professor Parr. Cannot afford classes at the moment and these are a monumental resource.
Can a 12 th pass student understand this ...???
Oscar enjoys these lectures very much.He learnt a lot.
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 :)
Maybe if I'm drunk the video will look normal?
But the lecture is excellent, thank you for putting this online!
Thank you so much sir ,the lectures are very useful and nicely explained.
Watching this in 2022! Thank you for making this available professor
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 .....
Watching at x1.25 speed and feels so much more natural
My favorite professor in university.
Thank you Dr Christof. Very enlightening, appreciated and helpful in EU-GDPR compliance work
very good Denglish
The best!
prof. good explanation. concept is clearly understood.
from india
That link in the bottom right seems to be drunk.
Brady Kirkpatrick wtf hahaha
How's that possible?
@@prashantlal7483 Whoever edited this film tried to use image stabilization, which produces this effect.
Anthony I think it’s the TH-cam auto stabilizer that makes this so weird. When applying a stabilizer in Premiere Pro text will not be stabilized, only the footage.
@@TheQgamingChannel 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....
Prof single handedly saving my degree
Thank you, Mr. Paar. It's too cool. I love it. I'll express something in my native language. "সেরা"
Thank you very much
your lectures were both educational and fun to watch. You really made a difference for me
Love these, love the content, love the teaching. It's awesome! Thank you SO MUCH sir!
thank you so much Mr.Paar for releasing your course on youtube, this is really helpful :)
Well, this class I awesome. I remember getting though my Data Security Class in Masters with this. respect !!
I really enjoyed these lectures. Thanks for uploading them.
noob question. if there's a secure channel to exchange keys. why not just use that channel to transfer the data?
Good question. The advantages of a secure channel for key exchange is the following:
(1) We only need the channel ONCE, at set up time. If we exchange keys at set up time, we can subsequently exchange messages securely (using cryptography) "forever".
(2) We only need to exchange very little information via the secure channel, often only 128 or 256 bits (= 16 or 32 bytes) for a key. That implies that the channel can be slow, e.g., exchanging a joint password or key by phone or letter. Once we have exchanged the key, we can encrypt large volumes of data with a high data rate over our, hopefully fast, insecure channel.
hope that helps. christof
this is the reason because I love youtube , I was so interested in this topic for a long time and how I coulnt pay for go to this university I think this would be a good way to learn this topic.
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
Very very good and helpful lectures. Thank You Prof . to make these lecture freely available to the world thanks a lot
Thank you. Greetings from Australia 🇦🇺
Thank you for your excellent cryptography lectures. They have been incredibly helpful for my studies. Could you please consider making videos on the new chapters about SHA-3 and post-quantum cryptography from the latest edition of your book?
Oscar. Tricky fellow. Also goes by, "Eve" (eavesdropping)
helpful in most part and thank you for making it free and open to every everyone.
Thank you so much for your lectures!! Super helpful and love that I can find it on TH-cam!!
superb. Thank you. I am hooked on crypto. World class instruction for free!
The cardinality of the text substitution is not 26! but 26! - 1 as you have to remove the alphabet. if you do not want any letter to be substitute by itself you have then 25! instead.
Nice course, thank you.
59:38 there are other tricks, like bigrams and trigrams. (The frequency of not only single but double and triple letters.) So for example in English, "TH" and "THE" occur very frequently, but "ZX" and "QQX" would never occur.
Very interesting, and well explained! Thanks for posting this series.
Excellent lectures! Danke sehr, Prof. Paar!
Thank you Herr Dr. Parr
I enjoyed your lecture.
Do you know professor Thomas Eisenbarth? he currently teaches Cryptography at the Worcester Polytechnic Institute at Massachusetts U.S.A, he got his PhD. in ECE from Ruhr University Bochum. :)
Thomas got his Ph.D. with me several years ago. He is an oustanding researcher and great person!
Excellent teaching style. awesome
This is Satoshi Nakamoto
Nice, I have seen all of your lectures! THX for this great job
Awesome series! I will learn all this and record my own series on cryptography only to use different names than Alice and Bob in the examples... maybe Andrew and Brittany, I don't know.
Thank you, great lecture. Our uni. professor recommended this lecture series.
Really happy to have found these courses... auch gut wenn ich auf Deutsch lernen kann!
Really nice and useful content, i’m really happy you had this brilliant idea, of recording this nice course! Thank you very much sir!
Thanks for the free lesson. Gracias amigo :)
Thank you so much Mr. Paar for these lectures. will you be uploading other classes?
+Jason Todd My tentative plan is record my lecture "Implementation of Cryptographic Schemes" in the winter semester 2016/17. The winter semester in Germany runs from October-early February. Regards, christof
Very informative and engaging lecture! Thanks!
I wish I was in the class I love cryptography
Unfortunately I can't watch this because I get so motion sick. Thankfully, the slides are on his website and I can just have the video playing in the background while writing notes from the slides. Thanks so much for these resources
awsome.... waiting for the implementation of cryptographic scheme
This lecture is comprised of 30% writing on the blackboard, 30% discussing with students, 30% teaching and 10% awful jokes.
How narrow-minded do you have to be to first come up with GnuPG or Secure Shell when asked for examples of cryptography? The right examples are online shopping and internet banking, those cover probably over 99% of computer cryptography. (Measured in economic value)
Loved the lecture, but only 3,439 views? What is everyone watching these days?
Nyan cats, Smack-Cam and Vines.
purpleravenstar all that is so February lol. Everyones into the shovel girl right now haha
Mindless nonsense. Most people are mindless :)
Music videos, HowToBasic, video game videos, makeup tutorials, vlogs, and sports videos. It's unfortunate.
Cat videos probably!
Thankyou very much sir for this wonderful series of lectures