A High-security Configuration Circuit Design for SoPC

SoPC has gradually take place of FPGA in electronic systems. Protecting the bitstream files designed by users becomes the basis of using digital chips safely. In this paper, a security configuration circuit in SoPC chip is proposed. Through the encryption and authentication algorithms of AES-256 and SHA-256, and the unique readback control circuit, we realized the encryption configuration and bitstream authentication of the SoPC chip. Meanwhile, effectively protects against possible backdoors and loopholes in SoPC. The simulation results show that the circuit can realize encryption configuration and data protection.