The Research on Bus Scrambling Technology of Cipher SoC Chip

Abstract

This paper provides a complete solution for bus security protection of cipher SoC chip from the technology of bus security protection. The structure has a scrambling transformation on the data bus of whole cipher chip with the word oriented stream cipher algorithm, and has a scrambling transformation on the address bus of memory cells especially the EFlash with more efficient Benes permutation network. Relative to the cipher SoC chip, the scrambling transformation is transparent and can ensure the security of information transferred on the bus, improve the efficiency of bus scrambling, reduce the area overhead at the same time.