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University of Colorado System

Classical Cryptosystems and Core Concepts

Welcome to Introduction to Applied Cryptography. Cryptography is an essential component of cybersecurity. The need to protect sensitive information and ensure the integrity of industrial control processes has placed a premium on cybersecurity skills in today’s information technology market. Demand for cybersecurity jobs is expected to rise 6 million globally by 2019, with a projected shortfall of 1.5 million, according to Symantec, the world’s largest security software vendor. According to Forbes, the cybersecurity market is expected to grow from $75 billion in 2015 to $170 billion by 2020. In this specialization, you will learn basic security issues in computer communications, classical cryptographic algorithms, symmetric-key cryptography, public-key cryptography, authentication, and digital signatures. These topics should prove especially useful to you if you are new to cybersecurity Course 1, Classical Cryptosystems, introduces you to basic concepts and terminology related to cryptography and cryptanalysis. It is recommended that you have a basic knowledge of computer science and basic math skills such as algebra and probability.

Status: Data Integrity
Status: Brute-force attacks
BeginnerCourse12 hours

Featured reviews

SS

4.0Reviewed May 15, 2020

Great Course but theories should be explained more but as for concepts based course its really great

RG

5.0Reviewed Aug 27, 2024

The course contents are designed properly which are very important as a part of security concerns and conceptual understanding.

JF

5.0Reviewed Jun 30, 2020

This course was very interesting and enlightening. The concepts have been explained very well.

SM

4.0Reviewed Oct 21, 2018

Would have absorbed the course material more concretely if the instructor had slowed down on the pace at which concepts were being disseminated.

AH

4.0Reviewed Oct 13, 2020

Although my head started spinning halfway through the course, it was filled with enough fascinating concepts to motivate me to finish.

PC

4.0Reviewed Jan 28, 2021

Introductional but very nice. Grading can maybe be bettered. Seems somehow to investigate if you have "followed" than if you have "understood" but not easy to do much better for an online course.

MW

4.0Reviewed Jul 20, 2018

Very difficult course if you have no previous experience with cryptoanalysis and recent stats, but good because it makes you think!

JV

4.0Reviewed Nov 21, 2018

Excellent lectures. Mostly very easy to follow, but some mathematical points were ran through a bit too quickly and thinly.

FA

4.0Reviewed Aug 14, 2020

This course and the style of lecturing was nice but if there are more problem oriented type class is there then it would be more interesting

FF

5.0Reviewed Jun 26, 2020

Honestly did not expect to enjoy the class as well as I did. Such a wealth of information. Truly worth it.

KM

5.0Reviewed Apr 13, 2020

Everything was crystal clear but have to keep up with everything the professor says can't miss anything.

VS

4.0Reviewed Jun 19, 2020

I was expecting more of the mathematics behind Cryptography. Even though this course didn't provide that, it was good. A good introduction to the field of cryptography.

All reviews

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Aditya Bhushan
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Reviewed May 27, 2021