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Computer and Network Security

Computer and Network Security. Rabie A. Ramadan Lecture 2. Grading Security Services and Mechanisms Symmetric Cipher Model Substitution techniques Transposition Techniques Stream and Block Ciphers. Table of Contents. Security Attacks. Security Attacks. Confidentiality. Integrity.

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659 views • 43 slides

CRYPTOGRAPHY v/s CRYPTANALYSIS

CRYPTOGRAPHY v/s CRYPTANALYSIS. By Raghuveer Mohan Hardik Barot Neethi Varun Neethi Sekar. Topics Covered. Introduction Short History Transposition Substitution Frequency Analysis Vigenere Cipher Enigma Machine Conclusion. INTRODUCTION. Motivation Threat of enemy interception

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408 views • 20 slides

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Plain text letter - PowerPoint PPT Presentation

Computer and Network Security

CRYPTOGRAPHY v/s CRYPTANALYSIS