Authentication

Dec 23, 2012

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Authentication

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Authentication

Authentication. Goal: Bob wants Alice to “prove” her identity to him. Protocol ap1.0: Alice says “I am Alice”. “I am Alice”. Failure scenario??. Authentication. Goal: Bob wants Alice to “prove” her identity to him. Protocol ap1.0: Alice says “I am Alice”. in a network,

568 views • 28 slides

Authentication

509 views • 26 slides

Authentication

Authentication. CS 772 Fall 2007. Overview of Authentication Methods. Process of reliably verifying the identity of someone (or something) Password-based authentication---eavesdropping is a problem Not scalable. Password-based authentication. Off-vs. On-line Password Guessing

365 views • 15 slides

Authentication

CS 99j. Authentication. John C. Mitchell Stanford University. Computer security. Computer security is concerned with the detection and prevention of unauthorized actions by users of a computer system. Authentication. Verify identity Only allow authorized access

273 views • 21 slides

Authentication

Authentication. Classe (abstraite) Authenticator PasswordAuthentication représente un couple password + user Méthode getPasswordAuthentication() à redéfinir pour obtenir un PasswordAuthenitcation Méthode setDefault(Authenticator) définit l'Authenticator pour le système

416 views • 30 slides

Authentication

Authentication. CS461/ECE422 Sp ring 2012. Readings. Chapter 3 from text Rainbow tables http://kestas.kuliukas.com/RainbowTables/ Chapter 10 from Handbook of Applied Cryptography http://www.cacr.math.uwaterloo.ca/hac/about/chap10.pdf. Overview. Basic elements of Authentication

549 views • 41 slides

Authentication

Authentication. IT443 – Network Security Administration Instructor: Bo Sheng. Outline. Authentication Mechanisms Key Distribution Center and Certificate Authorities Session Key. Authentication. Authentication is the process of reliably verifying certain information. Examples

572 views • 45 slides

Authentication

Authentication. Topics today. Background: Hash Functions Password Graphical passwords Challenge-Response Biometrics. Hash Functions. Hash Functions: Main Idea. Hash function H is a lossy compression function H(x ) should look “random” Every bit (almost) equally likely to be 0 or 1.

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AUTHENTICATION

AUTHENTICATION . CS 483 – SD Section By Dr. Daniyal Alghazzawi (7). Introduction. There are two primary parts to access control: Authentication Authorization

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Authentication

Authentication. Computer Security Group 6 João de Melo Feio Pinheiro Gonçalves Rodolfo Paulo Teixeira Tavares da Silva. Authentication. Objectives Allow an application to authenticate an user by means of FEUPnet's services. Protect FEUPnet. Authentication. Research

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Authentication

Authentication. Definitions. Identification - a claim about identity Who or what I am (global or local) Authentication - confirming that claims are true I am who I say I am I have a valid credential Authorization - granting permission based on a valid claim

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Authentication

Authentication. Question: how does a receiver know that remote communicating entity is who it is claimed to be?. Approach 1: peer-peer key-based authentication A, B (only) know secure key for encryption/decryption A sends encrypted msf to B and B decrypts: A to B: msg = encrypt("I am A")

294 views • 18 slides

Authentication

CS461/ECE422 Fall 2009. Authentication. Reading. Chapter 12 from Computer Security Chapter 10 from Handbook of Applied Cryptography http://www.cacr.math.uwaterloo.ca/hac/about/chap10.pdf. Overview. Basics of an authentication system Passwords Storage Selection Breaking them

559 views • 40 slides

AUTHENTICATION

AUTHENTICATION. Over the course of human existence people have had the need to verify their identity, to prove to others that they are who they claim to be. Security of system resources generally follows a three-step process of authentication, authorization, and accounting (AAA). AUTHENTICATION.

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Authentication

Authentication. Nick Feamster CS 6262 Spring 2009. What is Authentication?. Reliably verifying the identity of someone (or something). Examples Voice Pictures Mother’s maiden name Etc. What you know (passwords) What you have (keys) What you are (biometric devices)

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Authentication

Authentication. Building Secure Protocols. Topics. The Authentication Problem Simple Device Authentication Attack and Countermeasures Cryptographic Hash Functions Message Authentication with Secure Hash Functions. Authentication Protocols.

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Authentication

Authentication. Filtering. E-safety. e -safety, Internet & Lightspeed briefings. Why the meeting? Important decisions to be made on the services and infrastructure to schools Transfer of filtering controls if schools wish. e -safety, Internet & Lightspeed briefings.

203 views • 10 slides

Authentication

Authentication. User Authentication - Defined. The rapid spread of e-Business has necessitated the securing of transactions

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Authentication

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