'Key lengths' presentation slideshows

COSC 4607: Computer Security Lecture 9

COSC 4607: Computer Security Lecture 9. Cryptography. Contents. Basic concepts Cipher Schemes Data Encryption Standard-DES Public Key Systems-RSA Digital Signature Cryptography Analysis. Some basic definitions.

689 views • 51 slides

Computer Networks

Computer Networks. NYUS FCSIT Spring 2008 Milos STOLIC, Bs.C. Teaching Assistant stolic@unys.edu.mk. Network Security. Chapter 8. Need for Security. Some people who cause security problems and why. An Introduction to Cryptography. The encryption model (for a symmetric-key cipher).

585 views • 46 slides

Computer Networks

Computer Networks. NYUS FCSIT Spring 2008 Milos STOLIC, Bs.C. Teaching Assistant stolic@unys.edu.mk. Network Security. Chapter 8. Need for Security. Some people who cause security problems and why. An Introduction to Cryptography. The encryption model (for a symmetric-key cipher).

463 views • 46 slides

Contents

Contents. WEP (Wired Equivalent Privacy) No key management Authentication methods Encryption and integrity checking WPA (WiFi Protected Access) IEEE 802.1X authentication framework Practical example using SSL/TLS SIM/AuC authentication. WLAN security solutions. 1. 2. 3.

522 views • 36 slides

268 views • 26 slides

OS 2200 Security Update

450 views • 25 slides

Chapter 3, Part 2

Chapter 3, Part 2. AES. AES - History. 1997: NIST requests proposals for a new Advanced Encryption Standard (AES) to replace DES NIST required that the algorithm be: A symmetric-key cryptosystem A block cipher Capable of supporting a block size of 128 bits

357 views • 22 slides

CIS 105 Survey of Computer Information Systems

CIS 105 Survey of Computer Information Systems. Essential Concepts and Terminology Study Unit 11. Identity Theft. . Fraudulent use of another person's identifying information, commonly to establish a credit card account. . Privacy. .

334 views • 21 slides

MANAGEMENT 514

MANAGEMENT 514. Information Security Policy in Depth: Excerpt http://www.sans.org/info/66343. Information Security Policy. Learn Policy by Writing, Analyzing and Reviewing Policy Fragments With a Series of Guided Labs and Exercises.

338 views • 19 slides

Encrypted E-mail Web Application

Encrypted E-mail Web Application. Presented by: Aqila Dissanayake & Tarik EL-amsy. Motivations. When you send an email, do you realize that it can easily be read: By anyone who works for your Internet Service Provider By anyone who works for the recipient's internet service provider

292 views • 16 slides

Future USG Guidelines and Recommendations

318 views • 8 slides

Overview

Overview. Basic Communication Scenario for Cryptography Possible Attacks (a) Ciphertext only (b) Known plaintext (c) Chosen plaintext (d) Chosen ciphertext. Basic Communication Scenario for Cryptography. Symmetric vs. Public Key Algorithms. Symmetric key algorithms

169 views • 8 slides

EAP GPSK

EAP GPSK. Charles Clancy Hannes Tschofenig IETF 72 Dublin, Ireland 1 August 2008. EAP-GPSK. Minor changes since the last revision Address Pasi's review Single issue remains: MAC input vs output length

231 views • 2 slides