University of Colorado System
Cryptographic Hash and Integrity Protection
University of Colorado System

Cryptographic Hash and Integrity Protection

This course is part of Applied Cryptography Specialization

Taught in English

Some content may not be translated

Sang-Yoon Chang

Instructor: Sang-Yoon Chang

8,007 already enrolled

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Course

Gain insight into a topic and learn the fundamentals

4.5

(74 reviews)

Intermediate level
Some related experience required
8 hours (approximately)
Flexible schedule
Learn at your own pace

Details to know

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Assessments

5 quizzes

Course

Gain insight into a topic and learn the fundamentals

4.5

(74 reviews)

Intermediate level
Some related experience required
8 hours (approximately)
Flexible schedule
Learn at your own pace

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This course is part of the Applied Cryptography Specialization
When you enroll in this course, you'll also be enrolled in this Specialization.
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There are 4 modules in this course

Cryptographic hash function is a fundamental building block in modern cryptography and is used for digital signature, message authentication, anomaly detection, pseudo-random number generator, password security, and so on. This module define cryptographic hash functions and contrast it with ordinary hash functions. It also describes the iterative structure for hash implementation to support the hash requirements.

What's included

7 videos2 readings1 quiz1 peer review

Building on the previous module defining cryptographic hash functions, this module review its uses and applications. We will first describe hash chain, which chains multiple hash functions in sequence, and apply hash chain for generating one-time passwords using a scheme called S/Key. Then, we will use hash functions to construct a binary tree and describe hash tree, also known as Merkle tree. Lastly, we will review the applications of hash function and hash tree for decentralized digital currency in the forms of cryptocurrency or bitcoins.

What's included

5 videos3 readings2 quizzes

Message authentication is to protect the message integrity and to perform sender authentication. This module describes message authentication code (MAC) which is based on symmetric keys. It contrasts MAC with hash functions or general encryption/decryption techniques and quantify the brute force attack difficulty for MAC and discuss the security requirements for MAC. The module also reviews two MAC implementations in Data Authentication Algorithm (DAA) and Cipher-Based MAC (CMAC), which are based on the use of block ciphers.

What's included

7 videos1 reading1 quiz

Like physical signatures in paper transactions, digital signature provides sender authentication and non-repudiation. This module describes how to use public-key pair to ensure the source of the packet. Then, it describes the purpose of digital signatures and the corresponding requirements. Lastly, we review a digital signature construction, which is the basis for many digital signature implementations such as RSA signature and Digital Signature Standard (DSS).

What's included

5 videos1 reading1 quiz2 peer reviews

Instructor

Instructor ratings
4.6 (10 ratings)
Sang-Yoon Chang
University of Colorado System
6 Courses49,669 learners

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4.5

74 reviews

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SC
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Reviewed on Jun 1, 2021

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Reviewed on Jun 7, 2023

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Reviewed on May 25, 2020

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