Slide 1 Review What is security: history and definition Security policy, mechanisms and services Security models Slide 2 Outline Overview of Cryptography Classical Symmetric…

Slide 1 Computer Science CSC 774Dr. Peng Ning1 CSC 774 Advanced Network Security Topic 2. Review of Cryptographic Techniques Slide 2 Computer Science CSC 774Dr. Peng Ning2…

Slide 1 3.1 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 3 Traditional Symmetric-Key Ciphers Slide 2 3.2 ❏ To define…

Slide 1 WEEK 5-6 Cryptography & Public Key Infrastructure Slide 2 Cryptography Overview Is – A tremendous tool – The basis for many security mechanisms Is not –…

Slide 1 3.1 SERVICES AND MECHANISMS SERVICES AND MECHANISMS The International Telecommunication Union- Telecommunication Standardization Section (ITU-T) provides some security…

* Cryptography vs. Steganography Cryptography conceals the contents of communication between two parties Anonymous communication conceals who is communicating Steganography…

Plain E&F Template Advanced Information Security 1 Introduction to ECC Dr. Turki F. Al-Somani 2015 1 Page ‹#› Copyright ã 1995-1999 SCRA See first page for copyright…

Section 2.5: Polyalphabetic Substitutions Practice HW (not to hand in) From the Barr Text p. 118 # 1-6 In the monoalphabetic ciphers (shift, affine, substitution) we have…

Section 2.4 Transposition Ciphers Practice HW (not to hand in) From Barr Text p. 105 # 1 - 6 Transposition Ciphers are ciphers in which the plaintext message is rearranged…

NETWORK Authors Hari Thiruvengada Varun Lalchandani SECURITY... Contents Introduction. Encryption and Protocols. Kerberos. Network Security Issues and Protocols. Intrusion…