Journal of KIISE:Computer Systems and Theory (한국정보과학회논문지:시스템및이론)

Korean Institute of Information Scientists and Engineers (한국정보과학회)
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Parallel Modular Multiplication Algorithm to Improve Time and Space Complexity in Residue Number System

RNS상에서 시간 및 공간 복잡도 향상을 위한 병렬 모듈러 곱셈 알고리즘

  • Published : 2003.10.01
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Abstract

In this paper, we present a novel method of parallelization of the modular multiplication algorithm to improve time and space complexity on RNS (Residue Number System). The parallel algorithm executes modular reduction using new table lookup based reduction method. MRS (Mixed Radix number System) is used because algebraic comparison is difficult in RNS which has a non-weighted number representation. Conversion from residue number system to certain MRS is relatively fast in residue computer. Therefore magnitude comparison is easily Performed on MRS. By the analysis of the algorithm, it is known that it requires only 1/2 table size than previous approach. And it requires 0(ι) arithmetic operations using 2ㅣ processors.

본 논문에서는 RNS 시스템 상에서 시간 및 공간 복잡도 향상을 위한 병렬 모듈러 곱셈 알고리즘을 제안한다. 모듈러 감소를 위해서 새로운 테이블 참조 방식을 사용한다. 테이블 참조시 RNS 시스템이 비 가중치 시스템이므로 대수 비교를 비교하기 위해서 MRS 시스템을 이용한다. 제안한 곱셈 알고리즘은 RNS 컴퓨터 상에서 상대적으로 계간하기 쉬운 MRS 시스템을 사용함으로써 대수 비교를 효율적으로 수행할 수 있다. 기존의 RNS 시스템 상에서 테이블 감소를 이용한 모듈러 곱셈 알고리즘과 비교시 전체 테이블의 크기를 1/2로 줄일 수 있고, 산술 연산도 2ㅣ 개의 프로세서를 사용하여 0(ι) 만에 수행할 수 있다.

Keywords

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