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学生对 University of Colorado System 提供的 Symmetric Cryptography 的评价和反馈

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275 个评分

课程概述

Welcome to Symmetric Cryptography! Symmetric cryptography relies on shared secret key to ensure message confidentiality, so that the unauthorized attackers cannot retrieve the message. The course describes substitution and transposition techniques, which were the bases for classical cryptography when the message is encoded in natural language such as English. Then, we build on product ciphers (using both substitution and transposition/permutation) to describe modern block ciphers and review the widely used cipher algorithms in DES, 3-DES, and AES. Lastly, we enable the use of block ciphers to support variable data length by introducing different modes of block cipher operations in ECB, CBC, CFB, OFB, and CTR modes. This course is cross-listed and is a part of the two specializations, the Applied Cryptography specialization and the Introduction to Applied Cryptography specialization....

热门审阅

SB

Nov 29, 2020

This course helps in clearing all the topics in which i have doubt. I have learned new concepts from this.

AJ

May 22, 2020

A great learning experience. I teach Cryptography in my Institution and this course helped me gain additional insights on the course.

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51 - Symmetric Cryptography 的 53 个评论（共 53 个）

创建者 Ivon S

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May 22, 2019

is very difficult to understand.

创建者 Matt B

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Jan 10, 2025

This course is objectively terrible. There is no support. The pseudo-code assignments are complete black boxes graded by AI. The Feistel / DES lectures are incomprehensible. There are errors in the quiz answers. The quizzes ask questions which the lectures do not prepare you to answer. I would strongly advise all people to think about a different course. I wish I hadn't enrolled in either this course or this specialization. What a waste of time.

创建者 Parth S

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Oct 27, 2019

The instructor is not teaching the stuff that comes in the quizzes which makes the quizzes very difficult to pass and he is not able to develop interest in the subject.