Cryptology ePrint Archive: Report 2022/050

High-Speed and Unified ECC Processor for Generic Weierstrass Curves over GF(p) on FPGA

Asep Muhamad Awaludin and Harashta Tatimma Larasati and Howon Kim

Abstract: In this paper, we present a high-speed, unified elliptic curve cryptography (ECC) processor for arbitrary Weierstrass curves over GF(p), which to the best of our knowledge, outperforms other similar works in terms of execution time. Our approach employs the combination of the schoolbook long and Karatsuba multiplication algorithm for the elliptic curve point multiplication (ECPM) to achieve better parallelization while retaining low complexity. In the hardware implementation, the substantial gain in speed is also contributed by our n-bit pipelined Montgomery Modular Multiplier (pMMM), which is constructed from our n-bit pipelined multiplier-accumulators that utilizes digital signal processor (DSP) primitives as digit multipliers. Additionally, we also introduce our unified, pipelined modular adder-subtractor (pMAS) for the underlying field arithmetic, and leverage a more efficient yet compact scheduling of the Montgomery ladder algorithm. The implementation for 256-bit modulus size on the 7-series FPGA: Virtex-7, Kintex-7, and XC7Z020 yields 0.139, 0.138, and 0.206 ms of execution time, respectively. Furthermore, since our pMMM module is generic for any curve in Weierstrass form, we support multi-curve parameters, resulting in a unified ECC architecture. Lastly, our method also works in constant time, making it suitable for applications requiring high speed and SCA-resistant characteristics.

Category / Keywords: implementation / Elliptic Curves Cryptography, high speed implementation, Montgomery multiplication, FPGA

Original Publication (with minor differences): MDPI Sensors
DOI:
10.3390/s21041451

Date: received 14 Jan 2022

Contact author: asep muhamad11 at pusan ac kr

Available format(s): PDF | BibTeX Citation

Version: 20220118:153656 (All versions of this report)

Short URL: ia.cr/2022/050


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