'Plaintext letter' presentation slideshows

Network Security

937 views • 81 slides

Cryptography and Network Security Chapter 2

833 views • 66 slides

Cryptography and Network Security

Cryptography and Network Security. Sixth Edition by William Stallings . Chapter 2. Classical Encryption Techniques.

858 views • 43 slides

Cryptography and Network Security Chapter 2

520 views • 43 slides

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.

652 views • 43 slides

Cryptography and Network Security Chapter 2

498 views • 41 slides

Cryptography and Network Security

523 views • 41 slides

Cryptography and Network Security Chapter 2

485 views • 41 slides

Cryptography and Network Security Chapter 2

710 views • 41 slides

552 views • 40 slides

Cryptography and Network Security

495 views • 39 slides

Information Systems Security 3

473 views • 39 slides

551 views • 39 slides

Cryptography and Network Security

475 views • 39 slides

Cryptography and Network Security

400 views • 30 slides

467 views • 30 slides

Cryptology

590 views • 28 slides

Cryptology

Cryptology . Terminology plaintext - text that is not encrypted. ciphertext - the output of the encryption process. key - the information required to convert between plaintext and ciphertext . cryptanalysis - the art of breaking ciphers. cryptography - the art of designing ciphers.

315 views • 17 slides

Classical Techniques: Substitution

Classical Techniques: Substitution. Substitute a character, digit or symbol for each character in the plaintext Discussed: The Caesar cipher Monoalphabetic cipher Playfair cipher Polyalphabetic cipher. Caesar Cipher. 2000 years ago, by Julius Caesar

556 views • 15 slides

CPSC 3730 Cryptography

CPSC 3730 Cryptography. Chapter 2 Classical Encryption Techniques. Fig 2.1 Model of Conventional Encryption. Brute Force Attack/ Key Search. Table 2.2 Average Time Required for Exhaustive Key Search. Caesar Cipher (substitution technique).

220 views • 9 slides