Abstract: In order to obtain a practical remote attestation mechanism for platform configurations, an improved RAMT(remote attestation based on Merkle hash tree) method was proposed using chameleon hashes and software group. And the relevant proof was given. hhe problems of the existing methods were analyzed. And the architecture of improved scheme, its process of integrity measurement and attestation were discussed in detail. The advantages of new scheme were also discussed. Compared with RAMT, the scalability and the ability to protect privacy are enhanced, and the efficiency of the remote attestation is improved highly.

Key words: Trusted computing, Rremote attestation, Chameleon hash, Software group