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Learner Reviews & Feedback for Cryptography I by Stanford University

3,859 ratings

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


Jan 13, 2020

Provides a comprehensive introduction to cryptographic history, current technology, best practices and known attacker techniques. A great deal of material is covered in a relatively compact program.


Mar 10, 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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776 - 799 of 799 Reviews for Cryptography I

By Johanna C

Oct 5, 2019

Hard but worth it!


May 2, 2022

best explanation

By Heet S

Jun 20, 2018

Excellent course

By xukai

Nov 19, 2018


By 周泽全

Jan 11, 2018


By Jiang

Nov 18, 2017

very well


Jul 21, 2021


By Farhodjon A

Sep 7, 2017



Aug 25, 2020


By Anuj P

Nov 18, 2019


By Rudiyard C J

Dec 3, 2018


By pranjul s

Oct 22, 2017



Aug 30, 2016

The course is clear and goes at a sustained but correct pace. I really like the fact to show the weakness to understand what are the requirements of a secure PRF, PRP & co!

Optional programming assignments are really interesting unfortunately they take too much time to do and lack of guidance as it could be the case for the famous ML course. At least the first exercises should provide a development environment to get familiar with: hex, crypto libs, dictionary research, stats algorithms implementation ...

The first two weeks lack of in-video tests.

By Diego J H

Sep 16, 2017

The course was very good, but the pace was too fast, so eventually became the problem because it is

very difficult to follow. Anyway, it opened a new world to me and I'm willing to review many topics covered in this course

By Shahbaz H

Jul 24, 2018

Very nice course , sometimes along there was some difficulty occurs but the support staff n teacher helps me a lot.Some practical implementation also missing from course.

By 黃筑渝

Sep 30, 2019

a little bit hard for no computer basic people

By 王尔雅

Jul 2, 2022

so hard.

By Агеенко Г М

Feb 20, 2021

Не выдали сертификат. Лекции полезные.

By Щанкин С

Mar 21, 2022

very little practice

By Preet D

Jan 8, 2022

The Course instructor is good no doubt but the main quandary I faced was it went from 0 to 100 to expeditious what I betoken is that at start the fundamentals was thought but suddenly the caliber of course went very advance and that led me to leave this course incomplete


Oct 28, 2021

For me there is no benefits from this course.

Same explanation and same slides, when I was in college.

By Luís C D A J

Sep 7, 2016

Mentiroso, na descrição mostra que tem legenda para português porém o curso não tem legenda pt-br

By Remigiusz U

Aug 1, 2022

There is persistent problem with grading !!!

By Deleted A

Dec 1, 2021

​this is not fulfill my well understanding