'Key letters' diaporamas de présentation

Cryptography: Basics

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Cryptography: Basics

488 views • 48 slides

Introduction to Cryptography

Introduction to Cryptography. Lecture 8. Polyalphabetic Substitutions. Definition: Let be different substitution ciphers. Then to encrypt the message apply .

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Information Assurance Management

Information Assurance Management. Cryptography Foundations Week 10-2. Substitution and Transposition Ciphers. Substitution cipher - one character in plaintext is substituted for another Four types: Monoalphabetic cipher - one plaintext character is substituted with a cipher test character

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