Compact implementation of threefish and Skein on FPGA

AT N., Beuchat J., SAN İ.

2012 5th International Conference on New Technologies, Mobility and Security, NTMS 2012, İstanbul, Turkey, 7 - 10 May 2012 identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/ntms.2012.6208693
  • City: İstanbul
  • Country: Turkey
  • Anadolu University Affiliated: Yes


The SHA-3 finalist Skein is built from the tweak able Threefish block cipher. In order to have a better understanding of the computational efficiency of Skein (resource sharing, memory access scheme, scheduling, etc.), we design a low-area processor for Threefish and describe how to implement Skein on our architecture. We harness the intrinsic parallelism of Threefish to design a pipelined ALU and interleave several tasks in order to achieve a tight scheduling. From our point of view, the main advantage of Skein over other SHA-3 finalists is that the same coprocessor allows one to encrypt or hash a message. © 2012 IEEE.