FPGA + processor architecture-based information security system and working method thereof

Abstract

The invention discloses an FPGA + processor architecture-based information security system and a working method thereof. The system comprises an FPGA, a general processor and a memory, wherein the FPGA is interconnected with a processor and a FLASH; the memory is used for power-on configuration of the FPGA and storage of software programs, and the stored software comprises an encryption bootstrapprogram and an encryption application program; the FPGA is used for decrypting the encrypted bootstrap program stored in the memory, and is also used for generating a ciphertext for decrypting and encrypting the application program by the processor through the encryption software running the application program key; and the processor is used for running the bootstrap program decrypted by the FPGAand running the decrypted application program. According to the embodiment of the invention, the problem that core data and key application program codes are easy to steal due to lack of information security confidentiality measures in the existing embedded computer is solved.

Description

technical field [0001] The present invention relates to but not limited to the technical field of embedded computer information security, especially an information security system based on FPGA+processor architecture and its working method. Background technique [0002] Cryptography technology is the leading force to ensure information security, and the research and application of cryptographic algorithms is the core research field of information security technology. Currently published national secret algorithms include: SM1 symmetric algorithm, SM2 asymmetric algorithm, SM3 hash (Hash) algorithm, SM4 block encryption algorithm. [0003] At present, some new FPGA chips integrate bit stream decryption logic to provide a high degree of design security. Without knowing the encryption key, would-be pirates cannot analyze the externally intercepted bitstream to understand or clone the design. For example, the 7 series FPGA produced by Xilinx can guarantee that the design canno...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides an information security system based on FPGA+processor architecture and its working method, so as to solve the problem that existing embedded computers lack security measures for information security, and core data and key application program codes are easy to be stolen.

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