Unified low cost crypto architecture accelerating RSA/SHA-1 for security processor

This paper proposes a novel unified low cost hardware architecture which can accelerate both RSA and SHA-1. And a scalable and unified crypto function unit is presented to support high performance cryptographic computation in the RISC-like processor. To evaluate the effectiveness of our solution, a low power crypto-processor is proposed to integrate the unified function unit, and the execution time of the 1024 bit RSA is 190 ms and SHA-1 encryption rate reaches 64 Mbps. According to the synthesis results based on SMIC 0.13 um library, the unified crypto function unit can achieve 196 MHz work frequency with the utilization of only 2.6 thousand gates.