Wep updater

WEP vs WPA vs WPA2 | Difference between WEP,WPA,WPA2This page compares WEP vs WPA vs WPA2 and mentions difference between WEP, WPA and WPA2.It describes WEP encryption and WEP decryption block diagram, mentions WEP drawbacks and 802.1x authentication used in WPA.It provides link to AES encryption used in WPA2 algorithm.Wireless security has been a concern since long due to open air transmission medium used by it.Inspite of many security mechanisms incorporated in wireless, it can never be 100% secure mode ofdata transmission. There are various wireless networks based on different standard based technologiessuch as zigbee, GSM, WLAN, Zwave, bluetooth etc. WEP, WPA and WPA2 are encryption algorithms used in WLAN wirelessnetwork or wifi network.WEP Encryption and WEP DecryptionFollowing are the features of WEP (Wired Equivalent Privacy): • WEP is symmetric as same keys are used for encryption and decryption. • It uses 40 bit key for encryption (non-standard versions can use 128 bit or 256 bit) and 24 bit pattern for IV (Initialization Vector). • It uses RC4 stream cipher to provide confidentiality and CRC polynomial of 32 bit size for data integrity. • The WEP encryption and WEP decryption process uses simple XOR as explained below. Figure:1 WEP Encryption Process Block DiagramThe fig-1 depicts WEP encryption procedure.There are two processes being applied to plaintext in WEP.One process encrypts the plaintext while the other protects the data from any modification by intruders.Following are the steps involved in WEP encryption process: • Encrypt the plaintext using 64 bit key. Here 64 total bits consists of 40 bit secret key and 24 bitinitialization vector (IV). • As shown RC4 uses key value as initial seed and generates PN key sequence. • The PN key sequence is XORed with data. The resulting encrypted bytes have same length as input data bytes. • The 4 bytes IV value is added with ciphertext before transmission. • RC4 algorithm is applied on plain text, ICV and key sequence in order to generate cipher text.This is done to prevent data modification by unauthorized person. Figure:2 WEP Decryption Process Block DiagramFollowing are the steps involved in WEP decryption process: • IV value from incoming message is used to generate key sequence.It is used to decrypt the incoming message. • RC4 algorithm is applied to cipher text with key sequence to produce originalplaintext as well as ICV. • New ICV is determined based on received plaintext. • The algorithm is verified for correctness by comparing new ICV with the one decoded from received data. • If both new ICV and decoded matches received message is considered to be correct otherwiseit will be discarded. Drawbacks of WEP Encryption AlgorithmFollowing are the drawbacks of WEP encryption: • Analysis of captured traffic

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Wireless security is extremely important. The vast majority of us connect a mobile device to a router at some point during each day, be that a smartphone, tablet, laptop, or otherwise. Furthermore, Internet of Things devices connect to the internet using Wi-Fi.They're always on, always listening, and always in dire need of additional security.That's where Wi-Fi encryption steps in. There are several different ways to protect your Wi-Fi connection. But how do you know which Wi-Fi security standard is best? Here's how. Wi-Fi Security Types The most common Wi-Fi security types are WEP, WPA, WPA2, and the most recent standard, WPA3. WEP vs. WPA: What is WPA? Wired Equivalent Privacy (WEP) is the oldest and least secure Wi-Fi encryption method. It is laughable how terrible WEP is at protecting your Wi-Fi connection, and all good security advice suggests that you should not use WEP Wi-Fi encryption. Furthermore, if you're using an older router that only supports WEP, you should upgrade that, too, for both security and better connectivity. Why is it bad? Crackers figured out how to break WEP encryption, and it is easily done using freely available tools. In 2005, the FBI gave a public demonstration using free tools to raise awareness. Unfortunately, almost anyone can do it. As such, the Wi-Fi Alliance officially retired the WEP Wi-Fi encryption standard in 2004. By now, you should be using a version of WPA—ideally, the most recent version! Handily, there are ways you can figure out which type of Wi-Fi encryption your current connection is using. WPA and WPA2 Wi-Fi Protected Access (WPA) is the evolution of the insecure WEP standard. WPA launched in 2003 but was only a stepping stone to WPA2, which launched in 2004. When it became apparent WEP was woefully insecure, the Wi-Fi Alliance developed WPA to