'Classical substitution ciphers' presentation slideshows

Cryptography and Network Security Chapter 2

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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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Encryption

Encryption. Discrete Math March 7, 2006 Harding University Jonathan White. Outline. Terms Types of Attacks Classical Techniques Substitution: Caesar Monoalphabetic Playfair Shifting: Rail Fence Cipher Rotor Machines (Enigma). Outline (2). Data Encryption Standard (DES) Triple DES

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