'Weak keys' diaporamas de présentation

802.11i Overview

877 views • 75 slides

802.11i Overview

755 views • 75 slides

Wireless Security By Neeraj Poddar Advanced Cryptography

Wireless Security By Neeraj Poddar Advanced Cryptography . 04/14/2011. A Little Background . The IEEE 802.11 wireless LAN standard was established in 1989 and was originally intended to seek a wireless equivalent to Ethernet. Wide spread popularity in recent years.

502 views • 41 slides

Data Encryption Standard (DES)

Data Encryption Standard (DES). Most widely used block cipher in the world Adopted in 1977 by National Bureau Standards (NBS) Encrypts 64-bit data using 56-bit key Has widespread use Has been considerable controversy over its security. DES. Details of A Single Iteration.

2.15k views • 35 slides

RC4 and WEP

RC4 and WEP. By: Anthony Gervasi & Adam Dickinson. Overview. Discussion of RC4 Algorithm Breaking RC4 as used in WEP (Wired Equivalent Privacy) protocol Response from RSA labs. RC4 Algorithm. Developed by RSA labs Symmetric Stream Cipher

189 views • 18 slides

RC4 and WEP

RC4 and WEP. By: Anthony Gervasi & Adam Dickinson. Overview. Discussion of RC4 Algorithm Breaking RC4 as used in WEP (Wired Equivalent Privacy) protocol Response from RSA labs. RC4 Algorithm. Developed by RSA labs Symmetric Stream Cipher

275 views • 18 slides

Keys & Key Management Chapters 7, 8

Keys & Key Management Chapters 7, 8. Keys Symmetric Length Public Key Length Key Management Generating, Using, Storing Keys Backup Keys Destroying Keys. Symmetric Key Length. Keys Symmetric Length Depends on algorithm DES 56 bits or 112 bits AES 128, 196, or 256

280 views • 14 slides

Blowfish Encryption Algorithm

Blowfish Encryption Algorithm. Joshua Job Gordon Standart. Introduction. Reason Design Requirements and Decisions Design Elements Implementation Cryptanalysis Future Concerns. Reason / Justification. DES Weaknesses S-boxes Too small Not sufficiently random

372 views • 14 slides

Clicker Questions

Clicker Questions. Jan 31. DES is a A: block cipher B: stream cipher C: one-time pad. A Feistel network allows you to A: Encrypt in parallel B: Avoid weak keys C: Reuse same implementation for encryption & decryption. A brute-force search against double-DES takes how many steps?

182 views • 4 slides