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A Trusted Start-Up Based on Embedded System

—Embedded system is a handheld computing device that suffers from increasing attacks. Therefore, more credible and secure embedded system is demanded. This paper proposes a new trusted embedded system based on TPM (Trusted computing Platform Model) that could resolve the security problem of embedded system when it is boot up. The principle of new embedded system is described as follows: TPM is started up firstly; CPU of embedded system is run idly by bus arbitration device; TPM verifies the integrity measurement value of bootloader and OS kernel in Flash, and notifies the bus arbitration device whether to let the CPU of embedded system boot normally . And the whole verification process of trust chain meets the TCG expects.