[Resource Topic] 2012/126: Compact Implementation of Threefish and Skein on FPGA

Welcome to the resource topic for 2012/126

Title:
Compact Implementation of Threefish and Skein on FPGA

Authors: Nuray At, Jean-Luc Beuchat, Ismail San

Abstract:

The SHA-3 finalist Skein is built from the tweakable 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 coprocessor 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.

ePrint: https://eprint.iacr.org/2012/126

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