Cryptology ePrint Archive: Report 2015/1081

NEON PQCryto: Fast and Parallel Ring-LWE Encryption on ARM NEON Architecture

Reza Azarderakhsh, Zhe Liu, Hwajeong Seo, and Howon Kim

Abstract: Recently, ARM NEON architecture has occupied a significant share of tablet and smartphone markets due to its low cost and high performance. This paper studies efficient techniques of lattice-based cryptography on ARM processor and presents the first implementation of ring-LWE encryption on ARM NEON architecture. In particular, we propose a vectorized version of Iterative Number Theoretic Transform (NTT) for high-speed computation. We present a 32-bit variant of SAMS2 technique, original proposed in CHESí15, for fast reduction. A combination of proposed and previous optimizations results in a very efficient implementation. For 128-bit security level, our ring-LWE implementation requires only 145; 200 clock cycles for encryption and 32; 800 cycles for decryption. These result are more than 17:6 times faster than the fastest ECC implementation on ARM NEON with same security level.

Category / Keywords: implementation /

Date: received 7 Nov 2015

Contact author: rxaeec at rit edu

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Version: 20151109:092225 (All versions of this report)

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