Wired Equivalent Privacy (WEP): The first ‘confidentiality’ algorithm for the wireless IEEE 802.11 standard. PRESENTED BY: Samuel Grush and Barry Preston.

Slides:

Advertisements

Similar presentations

1 Intercepting Mobile Communications: The Insecurity of …or “Why WEP Stinks” Dustin Christmann.

Advertisements

Encryption/Decyprtion using RC4 Vivek Ramachandran.

Your Wireless Network has No Clothes CS 395T William A. Arbaugh, Narendar Shankar, Y.C. Justin Wan.

WEP 1 WEP WEP 2 WEP  WEP == Wired Equivalent Privacy  The stated goal of WEP is to make wireless LAN as secure as a wired LAN  According to Tanenbaum:

Wireless Security Ryan Hayles Jonathan Hawes. Introduction  WEP –Protocol Basics –Vulnerability –Attacks –Video  WPA –Overview –Key Hierarchy –Encryption/Decryption.

Security flaws of the WEP-Protocol by Bastian Sopora, Seminar Computer Security 2006.

Chalmers University of Technology Wireless security Breaking WEP and WPA.

WEP Weaknesses Or “What on Earth does this Protect” Roy Werber.

COMP4690, HKBU1 Security of COMP4690: Advanced Topic.

Intercepting Mobiles Communications: The Insecurity of Danny Bickson ACNS Course, IDC Spring 2007.

How To Not Make a Secure Protocol WEP Dan Petro.

W i reless LAN Security Presented by: Pallavi Priyadarshini Student ID

Wired Equivalent Privacy (WEP)

Security in Wireless LAN Layla Pezeshkmehr CS 265 Fall 2003-SJSU Dr.Mark Stamp.

Vulnerability In Wi-Fi By Angus U CS 265 Section 2 Instructor: Mark Stamp.

RC4 1 RC4 RC4 2 RC4  Invented by Ron Rivest o “RC” is “Ron’s Code” or “Rivest Cipher”  A stream cipher  Generate keystream byte at a step o Efficient.

Wireless Security Presentation by Paul Petty and Sooner Brooks-Heath.

The Final Nail in WEP’s Coffin Andrea Bittau, Mark Handley – University College London Joshua Lackey - Microsoft CPS372 Gordon College.

15 November Wireless Security Issues Cheyenne Hollow Horn SFS Presentation 2004.

WIRELESS NETWORK SECURITY. Hackers Ad-hoc networks War Driving Man-in-the-Middle Caffe Latte attack.

Security – Wired Equivalent Privacy (WEP) By Shruthi B Krishnan.

Module-8 Wireless LAN Security ,Vulnerabilities and Attack Methods

WLAN security S Wireless Personal, Local, Metropolitan, and Wide Area Networks1 Contents WEP (Wired Equivalent Privacy) No key management Authentication.

Mobile and Wireless Communication Security By Jason Gratto.

Wireless security & privacy Authors: M. Borsc and H. Shinde Source: IEEE International Conference on Personal Wireless Communications 2005 (ICPWC 2005),

Investigators have published numerous reports of birds taking turns vocalizing; the bird spoken to gave its full attention to the speaker and never vocalized.

CSC-682 Advanced Computer Security

CWNA Guide to Wireless LANs, Second Edition Chapter Eight Wireless LAN Security and Vulnerabilities.

A History of WEP The Ups and Downs of Wireless Security.

Chapter Network Security Architecture Security Basics Legacy security Robust Security Segmentation Infrastructure Security VPN.

Slide 1 Stream Ciphers uBlock ciphers generate ciphertext Ciphertext(Key,Message)=Message  Key Key must be a random bit sequence as long as message uIdea:

COEN 350 Mobile Security. Wireless Security Wireless offers additional challenges: Physical media can easily be sniffed. War Driving Legal? U.S. federal.

Wireless Insecurity By: No’eau Kamakani Robert Whitmire.

Intercepting Mobile Communications: The Insecurity of Nikita Borisov Ian Goldberg David Wagner UC Berkeley Zero-Knowledge Sys UC Berkeley Presented.

Wireless Security Presented by: Amit Kumar Singh Instructor : Dr. T. Andrew Yang.

Stream Cipher July 2011.

Implementing the RC4 Algorithm

WEP Protocol Weaknesses and Vulnerabilities

COEN 350 Mobile Security. Wireless Security Wireless offers additional challenges: Physical media can easily be sniffed. War Driving Legal? U.S. federal.

WEP AND WPA by Kunmun Garabadu. Wireless LAN Hot Spot : Hotspot is a readily available wireless connection.  Access Point : It serves as the communication.

CWNA Guide to Wireless LANs, Second Edition Chapter Eight Wireless LAN Security and Vulnerabilities.

WEP Case Study Information Assurance Fall or Wi-Fi IEEE standard for wireless communication –Operates at the physical/data link layer –Operates.

無線網路安全 WEP. Requirements of Network Security Information Security Confidentiality Integrity Availability Non-repudiation Attack defense Passive Attack.

Intercepting Mobiles Communications: The Insecurity of ► Paper by Borisov, Goldberg, Wagner – Berkley – MobiCom 2001 ► Lecture by Danny Bickson.

Security Technologies built into std. Presented by T.R.Santhosh.

WEP – Wireless Encryption Protocol A. Gabriel W. Daleson CS 610 – Advanced Security Portland State University.

 Advisor: Dr. Quincy Wu  Speaker: Hui - Hsiung Chung  Date:

Encryption Protocols used in Wireless Networks Derrick Grooms.

1 Wireless Threats 1 – Cracking WEP Cracking WEP in Chapter 5 of Wireless Maximum Security by Peikari, C. and Fogie, S.

Wireless Security Rick Anderson Pat Demko. Wireless Medium Open medium Broadcast in every direction Anyone within range can listen in No Privacy Weak.

Wireless Security John Himmelein Erick Andrew Christian Adam Varun Bapna.

How To Not Make a Secure Protocol WEP Dan Petro.

IEEE Security Specifically WEP, WPA, and WPA2 Brett Boge, Presenter CS 450/650 University of Nevada, Reno.

Wired Equivalent Privacy (WEP) Chris Overcash. Contents What is WEP? What is WEP? How is it implemented? How is it implemented? Why is it insecure? Why.

University of Malawi, Chancellor College

WLAN Security1 Security of WLAN Máté Szalay

COEN 350 Mobile Security. Wireless Security Wireless offers additional challenges: Physical media can easily be sniffed. War Driving Legal? U.S. federal.

EECS  Wired Equivalent Privacy (WEP) ◦ first security protocol defined in  Wi-Fi Protected Access (WPA) ◦ defined by Wi-Fi Alliance 

Wireless LAN Security Daniel Reichle Seminar Security Protocols and Applications SS2003.

หัวข้อบรรยาย Stream cipher RC4 WEP (in)security LFSR CSS (in)security.

1. Introduction In this presentation, we will review ,802.1x and give their drawbacks, and then we will propose the use of a central manager to replace.

Wireless Security Ian Bodley.

ANALYSIS OF WIRED EQUIVALENT PRIVACY

IEEE i Dohwan Kim.

CSE 4905 WiFi Security I WEP (Wired Equivalent Privacy)

Inaugural meeting (for Hasheem: that means ‘the first meeting’

Intercepting Mobile Communications: The Insecurity of

The RC4 Algorithm Network Security.

By: Anthony Gervasi & Adam Dickinson

Presentation transcript:

Wired Equivalent Privacy (WEP): The first ‘confidentiality’ algorithm for the wireless IEEE standard. PRESENTED BY: Samuel Grush and Barry Preston

WEP Components 1) Secret Key and Plaintext 2) Initialization Vector (IV) 3) RC4 Stream Cipher 1) Key Scheduling Algorithm (KSA) Seeded by IV+Secret Key Passes 'State' Array to PRGA 2) Pseudo-Random Generation Algorithm (PRGA) Uses 'State' Array to generate a keystream, while also mixing the Array. 4) Plaintext is combined with its checksum. 5) Bitwise-XOR [when encrypting] Plaintext is bitwise-XOR'd with keystream data to generate cyphertext. KSAPRGA Packet ciphertext IV XOR CRC-32 ICV Seed plaintext Secret Key Initialization Vector (IV)

WEP Decryption CRC-32 Seed KSA PRGAPacket ciphertext IV Secret Key XOR plaintext Received ICV ≟

Key Scheduling Algorithm

Pseudo-Random Generation Algorithm

Weaknesses The Initialization Vector (IV) 24-bit length limits the IV's entropy to 2² ⁴, or about 16.7 million combinations. ● Certain characters in the header are known or can be predicted, leading to a lessened effective entropy. ● The 'Shared Key' authentication system of WEP exposes the beginning of the keystream.