'Data encryption standard' diaporamas de présentation

Information Security Frank Yeong-Sung Lin Department of Information Management National Taiwan University

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Lecture 22 Network Security

Lecture 22 Network Security. CPE 401 / 601 Computer Network Systems. slides are modified from Dave Hollinger. Terminology. Authentication : identifying someone (or something) reliably. Proving you are who you say you are. Authorization : permission to access a resource. Terminology.

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Security

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Distributed Systems

Distributed Systems. Session 10: Security Christos Kloukinas Dept. of Computing City University London. Session 10 - Outline. 1 Motivation 2 Styles of Attacks 3 Cryptography 4 Authentication 5 Security Systems 6 Summary. Security in Distributed Systems. Non-Repudiation. Auditing.

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Ch3b Encryption

Ch3b Encryption. Uses of Encryption. Electronic Funds transfer trillion dollars a day. Automated teller machine passwords Pin's. Credit card numbers on the internet. Bank records. Your password. Cable TV signals. Cellular phone calls. Encryption.

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Data Encryption Standard

Data Encryption Standard. CS-471/971. Category of Standard : Computer Security. Explanation : The Data Encryption Standard (DES) specifies a FIPS approved cryptographic algorithm as required by FIPS 140-1.

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Tracking technologies 14 MARCH

COMP 381. Tracking technologies 14 MARCH. Wireless Technologies. RFID Infrared: 5m, line of sight Bluetooth: 10m WiFi: 30m Cellphone: 10k GPS: reach satellite, line of sight. GPS. Global Positioning System U.S . space-based system World-wide services positioning navigation timing.

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Public Key Infrastructure and Authentication

Public Key Infrastructure and Authentication. Mark Norman DCOCE Oxford University Computing Services. DCOCE. Der-kot-chee Digital Certificate Operation in a Complex Environment. Authentication.

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Rotor Machines

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Enterprise Network Management Chapter 2 SNMPv3 and Network Management Jiun January 2005

Enterprise Network Management Chapter 2 SNMPv3 and Network Management Jiun January 2005. SNMPv3 Structure. SNMPv3 entity consists of two main components: An SNMP engine A collection of SNMP applications. SNMPv3 Engine. The SNMPv3 engine is made up of four subcomponents:

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Network Security Principles, Symmetric Key Cryptography, Public Key Cryptography

Network Security Principles, Symmetric Key Cryptography, Public Key Cryptography. Modified by Xiuzhen Cheng Originally provided by Professor Rick Han (rhan@cs.colorado.edu) at the University of Colorado at Boulder. Network Security. Classic properties of secure systems: Confidentiality

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Cryptology

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Overview of Computer Security

Overview of Computer Security City University of Hong Kong Division of Computer Studies Y K Choi What is security? (a general definition) Defined by Ron Kurtus, http://www.school-for-champions.com/security/whatis.htm ,

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DATA ENCRYPTION STANDARD (DES)

DATA ENCRYPTION STANDARD (DES). Outline. History Encryption Key Generation Decryption Strength of DES Ultimate. History. In 1971, IBM developed an algorithm, named LUCIFER which operates on a block of 64 bits , using a 128-bit key.

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Chapter 3 Encryption Algorithms & Systems (Part D)

Chapter 3 Encryption Algorithms & Systems (Part D). Outline. NP-completeness & Encryption Symmetric (secret key) vs Asymmetric (public key) Encryptions Popular Encryption Algorithms Merkle-Hellman Knapsacks RSA Encryption El Gamal Algorithms DES Hashing Algorithms Key Escrow & Clipper.

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Experiments in Attacking FPGA- B ased Embedded Systems using Differential Power Analysis

Experiments in Attacking FPGA- B ased Embedded Systems using Differential Power Analysis. Sun Song, Jackey Z. Yan , Joseph Zambreno Dept. of Electrical and Computer Engineering Iowa State University { sunsong , zijunyan , zambreno }@ iastate.edu. Problem Statement.

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Encryption: Protecting Your Data While in Transit

Encryption: Protecting Your Data While in Transit. Based on Chapter 18 of William Stallings, Data and Computer Communication, 6 th Ed. Kevin Bolding Electrical Engineering Seattle Pacific University. Living in a Glass House. Public networks are public .

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Data Encryption Standard

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Information Security

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Chapter 20

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