A Flexible Data Scheduling Scheme for Block Cipher Processor

In order to improve the performance of block cipher, clustered processor structure is put forward. How to schedule data in multiple clusters will influence the processor performance directly. Based on the analyzing characteristics of block cipher data flow, we propose a data scheduling scheme according to block width and operation mode. The final algorithm mapping and experiment results show that the data scheduling scheme not only meets the data distribution demand of different algorithms, but also reduces the number of instructions that the algorithms need, thus it can enhance the throughput of most algorithms.