'Dictionary attacks' presentation slideshows

Authentication Computer Security Peter Reiher January 31, 2017

Authentication Computer Security Peter Reiher January 31, 2017. Outline. Introduction Basic authentication mechanisms. Introduction. Much of security is based on good access control Access control only works if you have good authentication What is authentication?. Authentication.

697 views • 69 slides

Overview

Overview. Key exchange Session vs. interchange keys Classical, public key methods Key generation Cryptographic key infrastructure Certificates Key storage Key escrow Key revocation Digital signatures. Notation. X ? Y : { Z || W } k X , Y

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David Evans cs.virginia/evans

Lecture 19: Authentication. David Evans http://www.cs.virginia.edu/evans. John Daugman, http://www.cl.cam.ac.uk/users/jgd1000/iriscollage.jpg. CS588: Cryptography University of Virginia Computer Science. How do you authenticate?. Something you know Password Something you have

445 views • 44 slides

Authentication and Authorization

Authentication and Authorization. Tjaden, Fundamentals of Secure Computer Systems, Franklin, Beedle & Associates, 2004, Chapters 6, 7 and 9. Smith & Marchesini, The Craft of System Security, Addison-Wesley, 2008, Chapter 9. Overview.

3.11k views • 39 slides

computer and network security

478 views • 35 slides

computer and network security

444 views • 35 slides

Progress on the PORTIA Project

Progress on the PORTIA Project. JOAN FEIGENBAUM http://www.cs.yale.edu/homes/jf March 21, 2005; Rutgers. PORTIA : Privacy, Obligations, and Rights in Technologies of Information Assessment.

501 views • 34 slides

Verifier-Based Password-A uthenticated K ey Exchange

Verifier-Based Password-A uthenticated K ey Exchange. Jeong Ok Kwon December 1 7 th, 2005. sk. sk. data privacy/integrity. Motivation. A fundamental problem in cryptography is how to communicate securely over an insecure channel. Motivation. How can we obtain a secret session key?

442 views • 34 slides

Authentication CS 236 On-Line MS Program Networks and Systems Security Peter Reiher

Authentication CS 236 On-Line MS Program Networks and Systems Security Peter Reiher. Outline. Introduction Basic authentication mechanisms. Introduction. Much of security is based on good access control Access control only works if you have good authentication What is authentication?.

454 views • 30 slides

SEG4110 - Advanced Software Design and Reengineering

SEG4110 - Advanced Software Design and Reengineering. TOPIC M Secure Software Development. Security: A combination of factors. Dependability The software runs as intended under all circumstances, even when under attack Trustworthiness

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563.10.3 CAPTCHA

563.10.3 CAPTCHA. Presented by: Sari Louis SPAM Group: Marc Gagnon, Sari Louis, Steve White University of Illinois Spring 2006. Agenda. Definition Background Applications Types of CAPTCHAs Breaking CAPTCHAs Proposed Approach Conclusion. Definition.

466 views • 19 slides

CompChall: Addressing Password Guessing Attacks IAS, ITCC-2005, April 2005

CompChall: Addressing Password Guessing Attacks IAS, ITCC-2005, April 2005. CompChall: Addressing Password Guessing Attacks By Vipul Goyal OSP Global Mumbai, India Coauthors: Virendra Kumar, Mayank Singh, Ajith Abraham and Sugata Sanyal.

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Wireless Web Services Security

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138 views • 13 slides

vti_encoding:SR|utf8-nl

vti_encoding:SR|utf8-nl. vti_timelastmodified:TR|21 Nov 2002 04:20:00 -0000. vti_extenderversion:SR|5.0.2.2623. vti_backlinkinfo:VX|index.html. vti_author:SR|HPL\Benny Pinkas. vti_modifiedby:SR|HPL\Benny Pinkas. vti_timecreated:TR|21 Nov 2002 04:20:00 -0000.

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Web Server Design Week 12

193 views • 11 slides

Excel Password Remover

Excel Password Recovery is the best Tool for recover password or unlock excel.

102 views • 6 slides

Excel Password Recovery

Excel Password Recovery eSoftTools Provide software to recover excel file.

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eSoftTools Excel Password Recovery

eSoftTools Excel Password Recovery presentation which can help users to recover, remove, & unlock Excel (.xls, .xlsx, .xlsm, .xlsb, .xla, .xlam, .xltm) file password without any data failure. Visit Here:- https://www.esofttools.com/excel-password-recovery.html

71 views • 6 slides

Agenda

Agenda. Last words on buffer overflows Overview of a few more techniques Defenses Attacks on network protocols. Stack-based overflow: more techniques. Injected code can be in The overflowed buffer itself An environment variable Another buffer (which is not overflowed)

65 views • 6 slides