Compact Implementation of Threefish and Skein on FPGA

Nuray At; Jean-Luc Beuchat; Ismail San

Paper 2012/126

Compact Implementation of Threefish and Skein on FPGA

Nuray At, Jean-Luc Beuchat, and 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.

Metadata

Available format(s): PDF
Category: Implementation
Publication info: Published elsewhere. Unknown where it was published
Keywords: SHA-3 Skein FPGA
Contact author(s): jeanluc beuchat @ gmail com
History: 2012-03-13: received
Short URL: https://ia.cr/2012/126
License: CC BY

BibTeX

@misc{cryptoeprint:2012/126,
      author = {Nuray At and Jean-Luc Beuchat and Ismail San},
      title = {Compact Implementation of Threefish and Skein on {FPGA}},
      howpublished = {Cryptology {ePrint} Archive, Paper 2012/126},
      year = {2012},
      url = {https://eprint.iacr.org/2012/126}
}