A TCM-Enabled Access Control Scheme

Trusted Cryptography Supporting Platform is a computer platform with high dependable and available software and hardware, within which security mechanism is reliable and robust because some encryption/decryption, authentication techniques are adopted upon the operating system based on the trusted platform module in a chip or ARM board. USB disk is a popular, flexible, removable storage device but it also brings some new information security risks at the same time. In this paper, a TCM (Trusted Cryptography Module)enabled transparent file encryption/decryption strategy is proposed with which a Minifilter driver subroutine are programmed under Microsoft’s latest Minifilter framework and files of USB disk can be transparently encrypted or decrypted. With the TSM/SDK (TCM Service Module/ Software Development Kit) , the file encryption/decryption procedures are better kept in safety by invocating TCM’s hash component, random function component and encryption/decryption component. Hence, the removable storage’s data (files) are of high security because TCM is an individual hardware, the encryption/decryption operations are running within TCM and the key is stored in TCM.