'Monoalphabetic cipher' presentation slideshows

825 views • 61 slides

Modern Block Ciphers

Modern Block Ciphers. CSE 651: Introduction to Network Security. Summary. Block Ciphers (Chapter 3) Feistel Cipher Structure (Chapter 3) DES: Data Encryption Standard (Ch. 3) 3DES (Ch 6.1) AES: Advanced Encryption Standard (Ch. 5.2). Monoalphabetic Substitution Cipher.

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Cryptography and Network Security Chapter 2

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Cryptography and Network Security Chapter 2

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Cryptography and Network Security Chapter 2

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Cryptography and Network Security

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Cryptography and Network Security Chapter 2

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Cryptography and Network Security Chapter 2

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Cryptography and Network Security

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Information Systems Security 3

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Cryptography and Network Security

Cryptography and Network Security. Third Edition by William Stallings Lecture slides by Lawrie Brown. Basic Terminology. plaintext - the original message ciphertext - the coded message cipher - algorithm for transforming plaintext/ciphertext

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554 views • 39 slides

Cryptography and Network Security

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CSCE 715: Network Systems Security

CSCE 715: Network Systems Security. Chin-Tser Huang huangct@cse.sc.edu University of South Carolina. Cryptography. Study of schemes used for encryption Can be characterized by type of encryption operations used substitution / transposition / product number of keys used

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Cryptography Network Systems Security

Cryptography Network Systems Security. Mort Anvari. Cryptography. Can be characterized by type of encryption operations used substitution / transposition / product number of keys used single-key or shared / two-key or public way in which plaintext is processed block / stream.

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Cryptography and Network Security (CS435)

Cryptography and Network Security (CS435). Part Two (Classic Encryption Techniques) . Symmetric Encryption. or conventional / private-key / single-key sender and recipient share a common key all classical encryption algorithms are private-key and by far most widely used.

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University of Palestine

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Monoalphabetic Cipher

Monoalphabetic Cipher. Rather than just shifting the alphabet Could shuffle (jumble) the letters arbitrarily Each plaintext letter maps to a different random cipher text letter hence key is 26 letters long Plain: abcdefghijklmnopqrstuvwxyz Cipher: DKVQFIBJWPESCXHTMYAUOLRGZN

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