What are advantages and disadvantages of WAPI authentication

WLAN authentication and Privacy Infrastructure (WAPI) has three independent elements: STA, AP, and Authentication Service Unit (ASU), to ensure authentication security. Encryption keys are generated after negotiation. WAPI authentication uses the SMS4 algorithm and supports 802.1X authentication applying to a large-scale network.

WAPI applies to scenarios requiring high security level. In WAPI authentication, the ASU server must check certificates, which requires support from STAs. Currently, a few STAs support WAPI. STA hardware needs to be upgraded to support WAPI. Software application is not widely used because of its low efficiency.

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