Encryption and data dependent permutations: Implementation cost and performance evaluation

Abstract

Recently, Data Dependent Permutations (DDP) have attracted the interest of cryptographers and ciphers designers. SPECTR-H64 and CIKS-1 are latest published powerful encryption algorithms, based on DDP transformations. In this paper, the implementation cost in different hardware devices (FPGA and ASIC) for DDP is introduced. In addition, the performance of these data transformation components is presented. Detailed analysis is shown, in terms of covered area, frequency, and throughput for DDP VLSI integration. Furthermore, two different architectures for hardware implementation of CIKS-1 and SPECTR-H64 are proposed. The first, based on full rolling technique minimizes the area resources. The second uses a pipelined development design and has high-speed performance. Both architectures have been implemented in FPGA and ASIC devices. © Springer-Verlag Berlin Heidelberg 2003.