Difference between WEP and WPA

WEP is a technology that encrypts group information in the "RC4" way between the Access Point and the client. It is easy to study and learn passwords. The encryption key used by WEP includes a 40-bit (or 104-bit) Universal key pre-determined by both sending and receiving sides, and a 24-bit, known as an IV key, that the sender determines for each group's information. However, in order to notify the communication object of the IV key, the IV key is directly embedded into the group information and sent out without being encrypted. If wireless eavesdropping is used to collect and parse group information containing a specific IV key, even the secret's universal key may be calculated.

 

WPA is a new technology that inherits the basic principles of WEP and solves the disadvantages of WEP. Because the algorithm for generating encryption keys is enhanced, even if the group information is collected and parsed, it is almost impossible to calculate a general key. WPA encryption is Wi-Fi Protected Access. Its encryption feature makes it more difficult to intrude than WEP. Therefore, if there is a high requirement on data security, you must use the WPA encryption method (Windows XP SP2 already supports the WPA encryption method ). WPA is currently the best infinite security encryption system. It includes two methods: Pre-shared key and radius key: 1) and pre-shared key: TKIP and AES, 2). the radius key is authenticated by the RADIUS server and can dynamically select TKIP, AES, and WEP.