The research and design of reconfigurable cipher processing architecture targeted at block cipher

The design of a cipher processing system adopts reconfigurable computing technology, which can support multiple cryptographic algorithms in the cipher application. Therefore, it can achieve crypto algorithms processing with efficiency and flexibility, and it also solves the hidden trouble in the cipher processing system. This paper has analyzed processing structure characteristics of popular block cipher algorithms, and proposed a reconfigurable cipher processing architecture (RCPA) combining the design method of reconfigurable processing architecture. And a prototype has been implemented successfully based on RCPA. The prototype is realized using Altera´s FPGA. Synthesis, placement and routing of RCPA have accomplished under 0.18 mum CMOS technology. The results prove that RCPA can achieve relatively high performance in block cipher algorithms processing.