Very Simple: ed&v=jETwvEDaJeQĨ What is WPA? Wi-Fi Protected Access(WPA) is a security protocol and security certification program developed to secure wireless computer networks. Step 5: Decipher the public/private key by matching the packets for similarities. Step 4: Begin packet sniffing and allow the program to get a good sample of the WEP encrypted packets. Step 3: Make sure there is traffic on the network.
NETWORK WEP VS WPA HOW TO
The IV is part of the RC4 encryption key: The fact that an eavesdropper knows 24-bits of every packet key, combined with a weakness in the RC4 key schedule, leads to a successful analytic attack that recovers the key after intercepting and analyzing only a relatively small amount of traffic.ħ How to crack WEP? Step 1: You need some basic computer skills, I mean, COME ON!!! Step 2: Get a packet sniffing program. The IV is static: Reuse of the same IV produces identical key streams for the protection of data, and because the IV is short, it guarantees that those streams will repeat after a short time. The 24-bit string used to initialize the key stream generated by the RC4 algorithm, is a relatively small field when used for cryptographic purposes. In Shared Key Authentication, the WEP key is used for authentication in a four step challenge-response handshake.ĥ Open System & Shared Key AuthenticationĦ What’s wrong with WEP? The IV is too small and in clear text: It’s a 24-bit field sent in the clear text portion of a message. At this point, the client must have the correct keys. Subsequently WEP keys can be used for encrypting data frames.
Any client can authenticate with the Access Point and then attempt to associate. In Open System Authentication, the WLAN client need not provide its credential to the Access Point during Authentication. 128-bit WEP uses 104-bit key, which is also concatenated to a 24-bit Initialization Vector.Ĥ WEP Authentication Two Methods of Authentication: Open System Authentication and Shared Key Authentication. It is used to prevent a sequence of text that is identical to a previous sequence from producing the same exact cipher-text when encrypted. (IV): A continuously changing number used in combination with a secret key to encrypt data. Standard 64-bit WEP uses a 40-bit key, which is concatenated with a 24-bit Initialization Vector (IV) to form the RC4 key. Each byte of data will be encrypted using a different packet key. WEP has been demonstrated to have numerous flaws and has been deprecated in favor of newer standards such as WPA and WPA2.ģ How does WEP work? WEP uses RC4 algorithm to encrypt the packets of information. Its intention was to provide data confidentiality comparable to that of a traditional wired network. WEP is a weak security algorithm for IEEE wireless networks. Presentation on theme: "Wireless Protocols WEP, WPA & WPA2."- Presentation transcript:Ģ What is WEP? Wired Equivalent Privacy (WEP) was included as the privacy component of the original IEEE standard ratified in September 1999.