I learned a lot from this course material. I find it to be an extremely simplified version of the book Applied Cryptography written by Boneh. It's truly a great book, and I will continue with Cryptography II after summarizing this course. Thank you very much for offering this online course through Stanford University. I also want to express my deep appreciation to Dan.

This course was a great in depth introduction to modern cryptography. I had to learn some new mathematical notation to describe groups and I didn't have the time to complete the optional programming exercises. I believe that I now have a better understanding of the framework which relates one time pads, stream ciphers, block ciphers, and public-private key techniques.

I took the course in 2014, whether you are a beginner in cryptography or a regular practitioner, the course won't disappoint you. Another master class from Stanford. The problem sets and programming assignments are of reasonable difficulty. So if you are planning to take a course on cryptography, this is just the one- comprehensive and up to the expectations.

Amazing course. I learned so much in such a little amount of time, and actually did a pretty good job understanding the material. For context, I'm a high school student, so this shouldn't even have been a good idea for me -- yet, I was able to thoroughly digest and implement everything Dan Boneh taught, and I'm grateful for the ability to take this online!

Thank you Coursera and The professor for such an oppotunity to learn Cryptography.

It's very challenging in the begining but the more i learn the more interesting the subject becomes. Professor Dan Boneh is really great at teaching the materials.

I hope that Cryptography II will be opened soon so that i could further my career in the cybersecurity field.

This course has taught me crypto basics in the best possible way. I am eagerly waiting for the second part to enhance my knowledge about this interesting field. The Lectures and they way questions were formed in quizzes made the learning interesting and benefiting. Best wishes to the instructor and Organizer who arranged and compiled the course material.

Very interesting course! Good, balanced presentation of lecture material. Weekly tests make you think well and study the theory more deeply. Despite the fact that there are few questions in the tests, they are not so simple as not to open the textbook. Later I want to finish all optional programming tasks and read recommended books more carefully again.

This course is the real deal. You will have to work hard to pass it. It gives a solid overview of the main cryptographic concepts like pseudo random generators, functions and permutations, block and stream ciphers, public key encryption, and key exchange. If you haven't studied number theory, plan to spend some extra time getting up to speed.

I am happy about the fact, that this course is teaches people very important Cryptography subtleties. This makes me think more about -- what would be the best way to preserve this information, so that it can guide future human generations! Thank you, Professor Dan Boneh! I am looking forward for the Crypto II. Kind Regards, Andrey Arapov

This was a great intro cryptography course for someone with a strong mathematics background like myself! Not fluff, Dan Boneh cuts straight to the point. Every lecture is brilliantly presented and explanations are always thorough and easy to follow. Topics are relevant for real world applications. Amazing course. Can't wait for part 2.

I liked this course very much, because it covers a lot of cryptogrpahy topics in a way accessible to most undegraduates with basic understanding of algebra. I especially liked the links to relevant papers in the end of every module. Dan explains everything in a very simple way.

Thanks for the course! Looking forward to the second part.

Very interesting course, even though I come from engineering background and wanted to explore cryptograpy for fun, managed to understand the concepts and the course built a strong cryptographic foundation. Big thanks to professor Dan Boneh and all the mentors that answered questions in forums. Hopefully see you all in Cryptography II

It's a quite pleasing experience to finish this course.

With the comprehensive analyzing and teaching, you might be able to grasp some basic concepts of modern cryptography such as ciphers, adversaries etc.

For better understanding of some lessons, I suggest you spend more time do the math.

Anyway, I highly recommend this course!

This course is tough, as in it makes you work hard for understanding the concepts and giving your all. This course was definitely lengthy but the hard work put into it makes the accomplishment feel so much better.Thank you, Professor Dan Boneh for this course,will definitely come and rewatch those lectures if I have any doubts.

This is an amazing course and taught the basics of cryptography, including all the math required to understand it. For someone who graduated almost 20 years ago, going through this course provided an amazing and easy to understand intro to cryptography and the associated math. I look forward to the second part of this course.

Its a good course with a good presenter. Having said that this was not entirely easy for me. It started out nicely and then accelerated the math quite a lot. Its not really hard math as such but keeping all the abstraction layers and definitions in mind and getting things to click can (for me) require a pause here and there.

This pretty abstract and complicated subject is explained very well by Dan Boneh. Especially tricky issues such as "when is random random enough" or "how secure is this encryption" are molded into clear and concise mathematical definitions and Professor Boneh explains it clearly without any unnecessary pump or circumstance.

The course is really good. It covers in deep details the building blocks of moder cryptography algorithms. Starting from the basics model till the more complex ones. Besides that, for those who want to learn more about each topic the professor provides a lot of texts and materials. Looking forward for the Cryptography II.

FANTASTIC course!!! No better place to learn Cryptography. Prof. Boneh has amazing ability to explain difficult concepts in an easy way. Don't get me wrong - it's not super easy topic but the way you are guided step by step makes it the best Crypto course on Earth! EXCELLENT JOB!!!!! THANK YOU SO MUCH!!!!!!!!!!!!

This is just about the best course of taken so far. The videos are very informative, the notes are loaded with relevant information and the discussion forum crowns it all as my questions got answered timely. I loved taking this course and I strongly recommend it to anyone interested in learning network security.

Great introduction to the mathematical theory behind cryptography primitives. Sometimes fast-paced and hard to keep up with. I was looking for something more along the lines of applied-cryptography but saw the high rating so I took the course. I will now look at one of the applied-crypto courses offered.

The way material is presented and the cource pace is perfect. After lessons the topics are clear and there will be much more understanding why all those crypto libraries are built like they're built, and how to use them even in case the API is not elegant and is error prone. Can't wait until part II!

I didn't have time to finish but first couple of weeks were great, a lot of math concepts sometimes hard to grasp but I like it, that is why I enrolled, I recommend it for anybody who knows some math and want to know history, how it works and background of cryptography from beginning till this day.

Great intro to crypto, I learned a lot, from easy to more sophisticated things. But all in all, the way of thinking is what I liked the most, building everything on logic. I thought the course was well structured and its homeworks were a great resource to learn more and ask myself more questions.

Extremely well planed. Maintains a balance between introducing the ideas, implementations of various cryptos while still keeping up with all the relevant mathematics behind them. you will come out of this course understanding the cryptography far better than you did before, Highly recommended!