Cryptography: Pseudo-Random Generators and Block Ciphers
Learn about the theoretical instantiations of Pseudo-Random Generators and Block Ciphers, in this free online course.
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This free online course highlights the instantiations of Pseudo-Random Generators (PRGs) and the practical construction of Block Ciphers. You will learn about the concept of one-way functions, how to design PRGs with one-bit and arbitrary expansions, the recent developments in the area of practical instantiations of PRGs, constructions based on Linear Feedback Shift Register(LFSR), Software ciphers and more. The variants of Pseudo-Random Generators will be discussed in the first section of the course.
Next, you will gain insight into a very important building block for the Symmetric-Key Cryptosystem namely Pseudo-Random Functions (PRFs). You will see how to construct Pseudo-Random Generators from Pseudo-Random Functions. Then, you will learn about designing efficient Chosen Plaintext Attack (CPA) Secure Ciphers from Pseudo-Random Functions. You will see some drawbacks of the CPA-Secure Cipher, and you will be shown how to design efficient CPA-Secure Ciphers from Pseudo-Random Permutations via modes of operations; like the Electronic Code Book (ECB) mode, Counter (CTR) mode, and more.
Thereafter, you will learn about the construction of provably-secure Pseudo-Random Functions from provably-secure Pseudo-Random Generators. Lastly, you will gain insight into the practical construction of Block Ciphers and an introduction to the Chosen Ciphertext Attack (CCA) Security Model. You will also see an overview of the Data Encryption Standard(DES) and the Advanced Encryption Standard(AES). This course is a great starting point for anyone who wants to learn about the working principles of Pseudo-Random Generators and Block Ciphers, to improve the security of their computer systems and data. Why wait, start this course today!Start Course Now
Pseudo-random Generators - Learning Outcomes
Provably Secure Instantiation of PRGs
Practical Instantiation of PRGs
CPA Secure Encryption from PRF
Pseudo-random generators - Lesson Summary
Block Ciphers - Learning Outcomes
Modes of Operations of Block Ciphers
Output Feedback Mode and Counter Mode
Theoretical Construction of Block Ciphers
Practical Construction of Block Ciphers
Data Encryption Standard Architecture
Passive and Active Adversary
Block Ciphers - Lesson Summary
Upon successful completion of this course, you should be able to:
- Discuss the theoretical instantiations of Pseudo-Random Generators
- Discuss the practical instantiations of Pseudo-Random Generators
- Outline the limitations of Stream Ciphers
- Identify the variants of Pseudo-Random Functions
- Explain how to construct CPA-Secure Ciphers using Pseudo-Random Functions
- Describe how to construct CPA-Secure Ciphers from Pseudo-Random Functions
- Explain the various modes of constructing CPA-Secure Ciphers
- Discuss the theoretical and practical constructions of Block Ciphers
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