3.5 (15,16,17,18,20,21,22)
15. Explain WEP in detail Wired Equivalent Privacy (WEP) is a security protocol used to secure wireless networks. It was designed to provide confidentiality and data integrity for wireless communications, making it as secure as wired networks. WEP was introduced as part of the original IEEE 802.11 standard but has since been deprecated due to its vulnerabilities. WEP uses the RC4 stream cipher for encryption. The RC4 algorithm generates a pseudorandom keystream based on a secret key and combines it with plaintext data using bitwise XOR (exclusive OR) operation to produce ciphertext. WEP supports two key lengths: 64-bit (40 bits key plus 24 bits initialization vector) and 128-bit (104 bits key plus 24 bits initialization vector). WEP employs a shared key authentication mechanism, where all devices on the wireless network use the same encryption key. The key is manually configured on both the access point (AP) and client devices. The shared key is used for both authentication and en...