'Symmetric block' diaporamas de présentation

Encrypting the Internet

Encrypting the Internet. Phil Karn 18 April 2000 karn@qualcomm.com http://people.qualcomm.com/karn. Overview. Threat models Cryptography basics Layer tradeoffs Cryptographic protocols on the Internet Crypto politics. Threat Models I.e, What are you worried about?.

928 views • 62 slides

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.

690 views • 51 slides

Chapter 18: System Security

Chapter 18: System Security. Chapter 18: System Security. The Security Problem Program Threats System and Network Threats Cryptography as a Security Tool User Authentication Implementing Security Defenses Firewalling to Protect Systems and Networks Computer-Security Classifications

788 views • 43 slides

Optimal Crossover Designs and the Problem of Correlated Outcomes

Optimal Crossover Designs and the Problem of Correlated Outcomes. Goal of clinical trial. Measure TREATMENT (DRUG) EFFECTS . We assess the accuracy of the measurements by the VARIANCE (of certain BLUE estimators). A small variance is good.

518 views • 27 slides

Blowfish Algorithm

Blowfish Algorithm. The Blowfish Encryption Algorithm. Keyed, symmetric block cipher Designed in 1993 . C an be used as a drop-in replacement for DES . The Blowfish Encryption Algorith m (cont.). As a fast, free alternative to existing encryption algorithms. Variable-length key.

4.91k views • 11 slides

Chapter 20

190 views • 0 slides