Secure access scheme for outsourced data based on Trusted Platform Module

Secure access scheme for outsourced data based on Trusted Platform Module

Shang Donglai Peng Yang Yuli

In order to improve the security of packet data access mechanism in cloud computing, this paper improves a tree based key management scheme, which is suitable for data owner-write-user-read/write applications. For malicious users in the scene, the new mechanism introduces the Trusted Platform Module (Trusted Platform module, TPM), which mainly solves the problem that the original scheme is caused by the session key, data encryption/decryption key and User privilege change during the data access process. In addition, it also considers how to ensure the authenticity of the user and the security of the user computing environment. At the same time, the replay attack and type defect attack in the original scheme are found, and the correction scheme is proposed. Finally, the paper uses the π calculus modeling and verifies the security of the new mechanism using the Verification tool Proverif. The results show that the new mechanism enhances the practicability and security of the original scheme.

Secure access scheme for outsourced data based on Trusted Platform Module