关键词: 无线局域网鉴别和保密基础结构（WAPI）, 平台完整性认证, 可信计算, 可信平台模块

Abstract: WAPI is the national standard designed by China for the WLAN.On the basis of thoroughly researches on the WAI security access of WAPI，this paper proposes an improved WAI based on TPM by using integrity measurement，which is called TWAI.The scheme ensures the security and dependability of every communicating section by the functions of TPM such as local protection and platform attestation.Then this paper analyzes the security with CK model and the trustworthiness.The result indicates that TWAI can achieve the goals such as integrity protection of entitys and two-way authentication，which enhances the security of WAI.

Key words: WLAN Authentication and Privacy Infrastructure（WAPI）, platform integrity authentication, trusted computing, Trusted Platform Module（TPM）