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Learner Reviews & Feedback for Cryptography I by Stanford University

2,727 ratings
541 reviews

About the Course

Cryptography is an indispensable tool for protecting information in computer systems. In this course you will learn the inner workings of cryptographic systems and how to correctly use them in real-world applications. The course begins with a detailed discussion of how two parties who have a shared secret key can communicate securely when a powerful adversary eavesdrops and tampers with traffic. We will examine many deployed protocols and analyze mistakes in existing systems. The second half of the course discusses public-key techniques that let two parties generate a shared secret key. Throughout the course participants will be exposed to many exciting open problems in the field and work on fun (optional) programming projects. In a second course (Crypto II) we will cover more advanced cryptographic tasks such as zero-knowledge, privacy mechanisms, and other forms of encryption....

Top reviews


Dec 16, 2017

This course gives is perfect to start learning cryptography, explanations are detailed, topics carefully selected combining theory with real world examples and making emphasis in important details.


Mar 11, 2017

Cutting edge cryptography topics. Good explanations and slides, but pause button is highly recommended. Can be a bit too mathematical for the general public, and not very formal for mathematicians.

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201 - 225 of 527 Reviews for Cryptography I

By Henri R

Sep 10, 2018

Really Good; keep up the work

By Le H

Nov 09, 2016


By Geoff E

Jan 09, 2017

A great introduction to cryptography. The material is all contained in the lecture videos making it easy to work through. The notation becomes a little hard to keep track of following week 4 but that's probably my fault for not committing it to memory thoroughly enough

By Капустина А И

Nov 19, 2016

Cryptography I is most interesting and useful course. I like it very much.

By Jhon A A C

Jun 08, 2017

Excelent !!!

By Georgios K

Nov 08, 2017

Challenging, yet very informative. Dr. Boneh is extremely good at explaining the concepts of basic Cryptography. I especially liked the "proofs by images". Will be definitely going for Crypto 2 as soon as I have time available for it.

By Vivient R

Mar 01, 2017

Thank you very much for anyone that make this course very interactive and fun. Special thank's for Prof. Dan Boneh as Instructor in this course.

By Marko D

Jan 08, 2017

The course gives fundamentals of Cryptography. But I would say that it dig very deep with fundamentals so I would highly recommend this course if you need/want to understand Cryptoraphy

By Vladlen L

Dec 17, 2016

One of the best introduction in Cryptography and Number Theory. Thanks to Author for clear explained information!


Jan 28, 2017

while i do my ms agree ,i found this course on the right time

By Ritwik B

Jan 28, 2017


By Filip R

Nov 20, 2016

The course is very well structured and gives overview of whole flow and systematically prepares us to understand each of the part. I am really looking forward to Crypto II, where will be described more things about certificate and new exchange protocols. Thank you.

By Gabriel M F d S

Jan 25, 2017

não terminei mas gostei do que vi

By Sujan B

Aug 02, 2017

It gives a depth knowlegde on security.☺

By matt s

Dec 13, 2016

great introduction to crypto.

Enjoyable and well designed course. Challenging material and practical exercises.

By Salman N

Jan 14, 2017

the real MVP!

By 李培春

Mar 02, 2018

Great course!!

By John S

May 16, 2017

Great course.

The material is explained masterfully. The exercises are interesting, challenging and effectively strengthen the knowledge acquired from the lectures. One of the best courses I've taken both in university and online.

By Nathan B

Oct 10, 2016

Amazing content and great material to study

By Satvik C

Jan 22, 2017

There is no reason why this course deserves anything less than 5 stars.

Everthying is nicely explained and there is so much to learn.

By Joseph M

Dec 16, 2017

A difficult, but rewarding course. Much more theoretical than I was expecting, and I would suggest a strong Maths background for anybody considering taking the course.

By Istvan S

Sep 04, 2017

This is a fabulous course. Professor Boneh did an admirable job teaching the basics of modern Cryptography. Modern Cryptography was born at Stanford University founded by Martin Hellman and two students. It used at first intuitive ideas linking complexity theory to cryptography. The old cryptography, that is cryptography at around the Second World War was a a rigorous theory based on Information Theory and founded by Claude Shannon. Modern cryptography was based on the idea that if a cryptographic system cannot be broken in billions of years, then it is for all practical purposes just as secure as a theoretically unbreakable system. In the last 30 years or so the proper definitions were found to make this intuitive idea precise, making modern cryptography a rigorous science. Professor Boneh presents this rigorous theory in this course.

By Ed K

Feb 15, 2018

This was an excellent introduction to a topic that is difficult to understand at the detail level.

By Rahul C

Mar 16, 2017

very systematic and thorough application of crypto

By Ivan M

Oct 19, 2016

Very stimulating, very accurate, good balance between theory and practical examples. Many thanks to the teacher !!!