Announcements Announcements Homework 0 Solutions online Homework 1 Due on Friday Exam 1 Next Friday If you cannot take the exam during class hours, please email me at letting me know what times might work for you. Strongly Connected Components Definition: In a directed graph G, two vertices v and w are in the same […]
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Announcements Announcements • Homework 4 due on Friday – Slight correction to original problem 3. If you downloaded before Monday, you should check out the latest version. • Exam 2 solutions on course webpage Last Time • Greedy Algorithms • Minimum Spanning Tree – Given a weighted graph G, find a collection of edges that
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CSE 101 Exam 1 Solutions Winter 2021 1 Question 1 (Topological Sort, 30 points). Give a topological ordering of the graph below: We compute DFS with pre- and post- orders: We then put the vertices in reverse post-order. Namely: C, B, A, I, G, F, D, H, E, J. Note: Other correct solutions are possible.
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Announcements Announcements Exam 3 on Friday NP-Completeness (Ch 8) NP-Problems Reductions NP-Completeness & NP-Hardness SAT Hamiltonian Cycle Zero-One Equations Knapsack Brute Force Algorithms For almost every problem we have seen there has been a (usually bad) naïve algorithm that just considers every possible answer and returns the best one. Is there a path from s
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Untitled CM30173: Example sheet 2 30th January Questions 1-3 relate to lecture 2. Question 4 relates to lecture 3. 1. Show that the Vernam cipher is vulnerable to a known-plaintext attack. 2. Alice and Bob don’t have a shared key but want to communicate in secret. They try to accomplish this using the one-time pad.
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CM30173/50210: Cryptography Part I \(cont.\) CM30173/50210: Cryptography Part I (cont.) A fundamental assumption Attack models Security One-time pad Part I Introduction to the problem (cont.) CM30173/50210: Cryptography Part I (cont.) A fundamental assumption Attack models Security One-time pad A fundamental assumption Attack models Security One-time pad CM30173/50210: Cryptography Part I (cont.) A fundamental assumption Attack
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CM30173: Cryptography eserved@d =[@let@token art V CM30173: Cryptography Part V RSA security: all about factoring? Multiplicative properties Common modulus Small private exponent Small public exponent RSA in practice RSA security: all about factoring? RSA in practice Part V Public-key cryptography CM30173: CryptographyPart V CM30173: Cryptography Part IV A family of algorithms Basic idea A framework
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\documentclass{article} \usepackage{amsthm, amssymb, amsmath,verbatim} \usepackage[margin=1in]{geometry} \usepackage{enumerate} \newcommand{\R}{\mathbb{R}} \newcommand{\C}{\mathbb{C}} \newcommand{\Z}{\mathbb{Z}} \newcommand{\F}{\mathbb{F}} \newcommand{\N}{\mathbb{N}} \newtheorem*{claim}{Claim} \newtheorem{ques}{Question} \title{CSE 101 Homework 0} \date{Winter 2021} \begin{document} \maketitle This homework is due on gradescope Friday January 8th at 11:59pm pacific time. Remember to justify your work even if the problem does not explicitly say so. Writing your solutions in \LaTeX is recommend
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CM30173: Cryptography\reserved@d =[@let@token art II CM30173: Cryptography Part II The Data Encryption Standard (DES) Feistel ciphers DES Security of DES Modes of operation Electronic codebook mode (ECB) Cipher block chaining mode (CBC) Output feedback mode (OFB) Cipher feedback mode (CFB) Further reading Part II Private-key cryptography: block ciphers CM30173: Cryptography Part II The Data Encryption
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1. (a) Explain how a block of plaintext is encrypted using a substitution-permutation network, describing each of the components and explaining their role. Name a standard cipher for private key encryption based on a substitution-permutation network. [6] (b) Describe in detail how you would mount an attack on an SPN using differential cryptanalysis, explaining the