'56 bit des key' presentation slideshows

Additional Notes to explain DES and AES

Additional Notes to explain DES and AES. Textbook: Fundamentals of Secure Computer Systems , Brett C. Tjaden, Franklin, Beedle & Associates, 2004, ISBN: 1-887902-66-X. This is a very readable and inexpensive book. Overview. Modern symmetric-key cryptosystems Data Encryption Standard (DES)

630 views • 53 slides

Overview

Overview. Modern symmetric-key cryptosystems: The Data Encryption Standard (DES) Adopted in 1976 Block size = 64 bits Key length = 56 bits The Advanced Encryption Standard (AES) Adopted in 2000 (to replace DES) Block sizes = 128, 192, or 256 bits Key lengths = 128, 192, or 256 bits.

796 views • 50 slides

Confidentiality Using Conventional Encryption

Where should cryptographic functionality be located? How can we make communications confidential? How do we distribute keys? What is the role of random numbers?. Confidentiality Using Conventional Encryption. Networks are vulnerable to active and passive attacks

492 views • 33 slides

Foundations of Network and Computer Security

274 views • 17 slides

Foundations of Network and Computer Security

276 views • 16 slides