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Learner Reviews & Feedback for Cryptography I by Stanford University

4,239 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.


Dec 15, 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.

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851 - 875 of 875 Reviews for Cryptography I


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 Suraj k

Mar 30, 2023


By Jiang

Nov 18, 2017

very well


Jul 21, 2021


By Deepika j

Oct 13, 2022


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 Adarsh P

Apr 2, 2023

certificate does not show the name of learner

By iacopo g

May 11, 2023

I needed support books

By 王尔雅

Jul 2, 2022

so hard.

By Daniel C

Sep 29, 2022

Aulas muito longas

Formador fala muito rápido

By Агеенко Г М

Feb 20, 2021

Не выдали сертификат. Лекции полезные.

By Щанкин С

Mar 21, 2022

very little practice

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 Deleted A

Dec 1, 2021

this is not fulfill my well understanding