Embedded Syndrome-Based Hashing

Ingo von Maurich, Tim Güneysu

Progress in Cryptology - INDOCRYPT 2012, 13th International Conference on Cryptology in India, Kolkata, India, December 9-12, 2012


We present novel implementations of the syndrome-based hash function RFSB on an Atmel ATxmega128A1 microcontroller and a low-cost Xilinx Spartan-6 FPGA. We explore several trade-offs between speed and area/code size on both platforms and show that RFSB is extremely versatile with applications ranging from lightweight to high performance. Our lightweight microcontroller implementation requires just 732,byte of ROM while still achieving a competitive performance with respect to other established hash functions. Our fastest FPGA implementation is based on embedded block memories available in Xilinx Spartan-6 devices and runs at 0.21 cycles/byte, with a throughput of 5.35 Gbit/s. To the best of our knowledge, this is the first time the RFSB hash function is implemented on either of these wide-spread platforms.

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tags: code-based cryptography, FPGA, Hardware, hash function, microcontroller, RFSB