'Brute force attack' presentation slideshows

SYMMETRIC CIPHERS

SYMMETRIC CIPHERS. Contents. Classical encryption techniques Block ciphers and the data encryption standard Basic concepts in number theory and finite fields Advanced encryption standard Block cipher operation Pseudorandom number generation and stream ciphers.

1.08k views • 73 slides

693 views • 58 slides

CIS 628 Crypto

655 views • 54 slides

Spyware Spam Phishing

1.11k views • 48 slides

Security today

613 views • 48 slides

An Introduction to Cryptology & Steganography

An Introduction to Cryptology & Steganography. Mgr. Tomas Foltynek , Ph.D. Department of Informatics Faculty of Business and Economics Mendel University in Brno Czech republic. Introduction. Secure communication problem is as old as mankind

640 views • 46 slides

David Evans http://www.cs.virginia.edu/evans

574 views • 44 slides

Cryptography and Network Security Chapter 11

Cryptography and Network Security Chapter 11. Fourth Edition by William Stallings Lecture slides by Lawrie Brown /Mod. & S. Kondakci. Message Authentication. message authentication is concerned with: protecting the integrity of a message validating identity of originator

507 views • 32 slides

Mobile Internet Device Security: Some Introductory Slides

Mobile Internet Device Security: Some Introductory Slides. Educause Security Professionals Atlanta GA, April 12th-14th, 2010

561 views • 31 slides

Mobile Internet Device Security: Some Introductory Slides

Mobile Internet Device Security: Some Introductory Slides. Educause Security Professionals Atlanta GA, April 12th-14th, 2010

495 views • 31 slides

Chapter 6

Chapter 6. Remote Connectivity and VoIP Hacking . Virtual Private Network (VPN) Hacking . Internet. Physical connection Logical connection. Virtual Private Network (VPN). A VPN connects two computers securely over an insecure network (usually the Internet), using tunneling. Internet.

526 views • 29 slides

Security in Wireless Local Area Networks

672 views • 28 slides

Message Authentication and Hash Functions

Message Authentication and Hash Functions Authentication Requirements Authentication Functions Message Authentication Codes Hash Functions Security of Hash Functions and MACs Authentication Requirements Kind of attacks (threats) in the context of communications across a network Disclosure

2.39k views • 27 slides

Web Security Project

359 views • 20 slides

Security and Trust in Mobile Devices

Security and Trust in Mobile Devices. Abdulrhman Alkhanifer Ricardo Figueroa. DEVICES - Introduction. Mobile devices serve as access points to data stored either locally or in some remote server. Currently there are 5.3 billion mobile users around the world (77% of the world population) 1 .

455 views • 19 slides

Customer-centric Energy Usage Data Management and Sharing in Smart Grid Systems

276 views • 16 slides

Steganography

658 views • 15 slides

The Argument Against Security Through Obscurity in the Non-Digital World

The Argument Against Security Through Obscurity in the Non-Digital World. Greg Newby H2K2 Presentation July 13, 2002 gbnewby@ils.unc.edu http://ils.unc.edu/gbnewby . What are we talking about?. Security through obscurity is the bane of most types of computer systems False sense of security

337 views • 15 slides

Computer Forensics BACS 371

276 views • 15 slides

CRYPTOGRAPHIC ALGORITHMS

CRYPTOGRAPHIC ALGORITHMS . -Abdul M. TYPES OF CRYPTOGRAPHIC ALGORITHMS . There are several ways of classifying cryptographic algorithms. For purposes of this presentation, they will be categorized based on the number of keys that are employed for encryption and decryption

518 views • 13 slides