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Learner Reviews & Feedback for Cryptography I by Stanford University

4,064 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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776 - 800 of 839 Reviews for Cryptography I

By Unai E

Sep 8, 2017

Course is very interesting but, in my opinion, it is a bit theoretical. I would like the course were more practical.

By Simone B

Oct 16, 2016

Fantastic course that gives the basic notions of cryptography. Both practical a theoretical tests are very useful.

By cyril m

Jun 9, 2016

Great course, but a bit disappointed by the fact that I'll have to do it all over again to get a certificate.

By Nitin

Apr 14, 2017

The Course has been more about knowing about and implementing them and has been more helpfull in doing so.

By Shashank V

Jan 21, 2018

Exceptional Course .. Especially he lectures were clearly explained. But the exercises were a bit tough.

By Luis J d C

Sep 17, 2021

Need some base for the new students on this subject, or recommend some first steps before this course

By Roland d B

Nov 20, 2016

Very thorough, lot's of math. A bit too academic for my taste, it's not really useful in practice.

By Nathan M

May 14, 2019

Pretty good, though needs more basic understanding. Quite a bit of prereq's for this course!

By Alessandro D C

Apr 28, 2019

(+) Really good training also for beginners.

(-) Sometimes the teacher talks very quickly.

By Deleted A

Apr 3, 2020

given videos is not helping to do the given problems in the quiz (not all, some problems)

By Ratnabh k r

Jun 17, 2018

this course has really helped me to build the basic knowledge in the field of security.

By Adeen A

Jan 8, 2018

Really enjoyed taking this course. Hoping to learn more, Inshaa Allah(God willing).


Oct 13, 2022

good but course content and quiz quesions need modification & rectification.

By Prathamesh P

Aug 31, 2021

It covers theory concepts very greatly, but still lacks in practical solving

By Enrique P

May 22, 2017

Excellent course!

I have learned Cryptography, Python and Number Theory

By Antariksha M

Sep 1, 2019

Great , Enjoyed the complete session ,waiting for the next session :)

By Shubham S (

Jun 10, 2022

it would be nice if modular arithmatic is taught in bit more detail.

By Jason B

Jul 15, 2017

Very good course.. I learned a lot about how cryptography works.

By Rahul K

Mar 4, 2022

Informative and very better way of learning Cryptography...

By suraj s

Sep 30, 2016

Quite good course to increase your cryptography skills...

By Emilson V

Sep 21, 2016

Wonderful course and the teacher is very well prepared.

By Siti H

Apr 27, 2021

its so awesome and lil difficult, but overall is good

By Harish H

Jun 21, 2018

Explanation along with the material is fantastic!


Aug 31, 2016

This is a tough course.but teaching is very good.

By Muayad A

Dec 19, 2018

Well explained and very useful to me. Thank you.