How The Standard Works
WAPI, which was initiated to resolve the existing security loopholes (WEP) in WLAN international standard (ISO/IEC 8802-11), was issued to be Chinese national standard in 2003. WAPI works by having a central Authentication Service Unit (ASU) which is known to both the wireless user and the access point and which acts as a central authority verifying both. The WAPI standard (draft JTC1/SC6/N14619) allows selection of the symmetric encryption algorithm, either AES or SMS4, which has been declassified in January 2006 and passed evaluation by independent experts.
Read more about this topic: WLAN Authentication And Privacy Infrastructure
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