Exploiting OLP, ILP and TLP of RCBCP

Reconfigurable clustered block cipher processor (RCBCP) is a fast and flexible block cipher processor. This paper presents the parallelism exploitation of RCBCP. In this paper, operation-level-parallelism (OLP) is put forward. Based on the characteristics of block cipher processing, OLP, instruction-level parallelism (ILP) and thread-level-parallelism (TLP) of this architecture are systematically exploited. In exploitation of OLP, eight reconfigurable computing cells are designed. In exploitation of ILP, five-stage pipeline is designed, and Bypassing in cluster is adopted to resolve data hazards, and speculation of taken-branch is adopted to resolve branch hazards. In exploitation of TLP, unsymmetrical-multi-thread mode is put forward. Finally, the result shows that RCBCP can obtain high performance, which can meet the future demand of crypto application.