Security and Networks: Exercise 3 Deadline: 26 March, 12:00pm noon 1 Protocol Analysis You have learnt that someone is using their own cryptographic protocols to send messages. You need to analyse the protocols, and find flaws in them that will let you read the messages without the client key. You can log into the Alice […]
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Codes versus Ciphers Symmetric Cryptography Public Key Cryptography Hashes, MACs and Authenticated Encryption How Public Key Cryptography works Saving a Key We can read and write the bytes of a key to a file. This is a bad idea. We want to protect read access to private keys, and make sure the publics ones are
Computer Security and Networks: Additional Exercise This final exercise looks at reverse engineering applications and buffer overflow attacks. These powerful exploits will allow you to take complete control of the VM. For this exercise you should log into the new VM as the Bob user: bobpark, password: redfiveworldequal. In Bob’s home directory you will find
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The Internet and Sockets The Internet and Sockets 147 / 180 The Internet and Sockets It¡¯s quite hard to explain what the Internet actually is ¡°The Internet is not something that you just dump something on. It¡¯s not a big truck. It¡¯s a series of tubes.¡± Ted Stevens, US Senator 148 / 180 The Internet
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Web Technologies Web Technologies 181 / 183 Web Technologies Webserver 101 Check open ports: nmap localhost Webserver on the VM is apache (very common) Database server on the VM is mysql (very common) 182 / 183 Web Technologies Webserver 101 Standard files in /var/www/html cd /var/www/html ls -la Have small demo website (not on VM;
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Modeling and Verifying Security Protocols with the Applied Pi Calculus and ProVerif This article may be used only for the purpose of research, teaching, and/or private study. Commercial use or systematic downloading (by robots or other automatic processes) is prohibited without ex- plicit Publisher approval. Contents 1 Introduction 2 1.1 Verifyingsecurityprotocols …………….. 2 1.2 StructureofProVerif
Binary analysis and application security Data can be Code • Lots of the attacks we have seen trick a program into accept data that is really code, e.g., – SQL injection – XSS – Buffer overflow (next lecture) • This is a very common way to attack systems. “Little Bobby Tables” Code is Data •
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A Quick Guide to Web Systems Eike Ritter March 15, 2021 This document gives a very brief introduction to the technologies you need to know for the web security part of the “ Security and Networks” module. HTML & JavaScript Basic webpages are usually written in HTML and JavaScript, I hope that you are familiar
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APPLYING GOF DESIGN PATTERNS The shift of focus (to patterns) will have a profound and enduring effect on the way we write programs. —Ward Cunningham (co-author of the Manifesto for Agile Software Development) and (co-author of Design Patterns: Elements of Reusable Object-Oriented Software) Software Modelling and Design Copyright By PowCoder代写 加微信 powcoder SWEN30006 Software Modelling
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Computer Architecture ELEC3441 Instruction Set Architecture (1) 2nd Semester, 2020-21 Dr. Hayden Kwok-Hay So Department of Electrical and Electronic Engineering Review: ISA n Instruction set architecture defines the user observable behavior a processor • Acontractbetweenhardwareandsoftware n Usually includes: • Observablestateofaprocessor • Asetofmachineinstructions • Semanticsoftheinstructionandprocessor execution HKU EEE ELEC3441 – HS 2 Computer Architecture: HW/SW Interface