Most mainstream wireless encryption technologies have been cracked

WPA2: more powerful wireless encryption technology

It may take some time for the full IEEE 802.11i standard to be launched, and the Wi-Fi Alliance wants to enable the new security standard to be deployed as soon as possible to eliminate users'Wireless NetworkSecurity concerns allow the wireless network market to expand quickly. Therefore, the draft of the fifth draft of the IEEE 802.11i (IEEE 802.11i draft 3) of TKIP is developed as a benchmark.WPA. After IEEE completed and published the IEEE 802.11i Wireless LAN security standard, the Wi-Fi Alliance immediately announced the WPA 2nd version-WPA2. WPA2 supports AES (Advanced Encryption Algorithm) with higher security. However, unlike WPA, WPA2 requires new hardware.

WPA2 is an IEEE 802.11i standard authentication form verified by the WiFi alliance. WPA2 implements the mandatory element of 802.11i, in particular, the Michael algorithm is replaced by the fully-secure CCMP (full code protocol for block Chain messages in counter mode) message authentication code, and the RC4 encryption algorithm is also replaced by AES.

In WPA/WPA2, PTK generation depends on PMK, while PMK can be generated in two ways. One is PSK mode, that is, pre-shared key mode, PSK, also known as the personal mode). In this mode, PMK = PSK; in another mode, the authentication server and the site need to negotiate to generate PMK. The following describes the differences between WPA and WPA2 through the formula:

WPA = IEEE 802.11i draft 3 = IEEE 802.1X/EAP + WEP (selective project)/TKIP

WPA2 = IEEE 802.11i = IEEE 802.1X/EAP + WEP (selective project)/TKIP/CCMP

Currently, WPA2 provides excellent security protection capabilities. As long as your wireless devices support WPA2 encryption, you will experience the safest wireless network life. Even the most popular "primary network card", it is difficult for users to integrate your wireless network.

There is also a stronger encryption mode

Maybe some users have noticed that there is a WPA-PSK (TKIP) + WPA2-PSK (AES) option in the wireless network encryption mode of wireless routing, is it a stronger encryption method than WPA2? The answer is yes. This is indeed the most powerful wireless encryption method at present. However, due to compatibility issues with this encryption mode, it is difficult to connect properly after the configuration is complete, therefore, this encryption method is not recommended for normal users.

Based on the above introduction and the other two technologies introduced in the previous article: WEP and WPA, I believe you have a better understanding of the three encryption methods of wireless networks. For ordinary wireless users, we recommend that you choose WPA-PSK (TKIP) and WPA2-PSK (AES) encryption, they can maximize your wireless network security, this is the best choice at this stage. However, if your wireless network card does not support WPA/WPA2 encryption, the 128-bit WEP encryption method will be your bottom line of security protection, to prevent your wireless network from becoming a "free public WiFi Hotspot", please encrypt your wireless network.