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Authors: Zongbin Liu 1 ; Luning Xia 1 ; Jiwu Jing 1 and Peng Liu 2

Affiliations: 1 Graduate University of Chinese Academy of Sciences, China ; 2 The Pennsylvania State University, United States

Keyword(s): Montgomery, RSA, FPGA.

Related Ontology Subjects/Areas/Topics: Applied Cryptography ; Cryptographic Techniques and Key Management ; Data Engineering ; Databases and Data Security ; Information and Systems Security

Abstract: In this paper we propose a new hardware architecture of modular exponentiation, which is based on the optimized Montgomery multiplication. At CHES 1999, Tenca introduced a new architecture for implementing the Montgomery multiplication which was later improved by Huang et al. at PKC 2008. In this paper we improve the architecture of Huang and the improved one occupies less hardware resource, at the same time we add the final subtraction of the Montgomery algorithm into the architecture in order to do the exponentiation computation. Finally we use this improved architecture to build a RSA coprocessor. Compared with the previous work, the new 1024-bit RSA coprocessor saved nearly 50% of area, and the area utilization is greatly improved. This design is the smallest design as we know in the literature, and we verified the correctness by huge test data.

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Paper citation in several formats:
Liu, Z.; Xia, L.; Jing, J. and Liu, P. (2011). A TINY RSA COPROCESSOR BASED ON OPTIMIZED SYSTOLIC MONTGOMERY ARCHITECTURE. In Proceedings of the International Conference on Security and Cryptography (ICETE 2011) - SECRYPT; ISBN 978-989-8425-71-3; ISSN 2184-3236, SciTePress, pages 105-113. DOI: 10.5220/0003511401050113

@conference{secrypt11,
author={Zongbin Liu. and Luning Xia. and Jiwu Jing. and Peng Liu.},
title={A TINY RSA COPROCESSOR BASED ON OPTIMIZED SYSTOLIC MONTGOMERY ARCHITECTURE},
booktitle={Proceedings of the International Conference on Security and Cryptography (ICETE 2011) - SECRYPT},
year={2011},
pages={105-113},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003511401050113},
isbn={978-989-8425-71-3},
issn={2184-3236},
}

TY - CONF

JO - Proceedings of the International Conference on Security and Cryptography (ICETE 2011) - SECRYPT
TI - A TINY RSA COPROCESSOR BASED ON OPTIMIZED SYSTOLIC MONTGOMERY ARCHITECTURE
SN - 978-989-8425-71-3
IS - 2184-3236
AU - Liu, Z.
AU - Xia, L.
AU - Jing, J.
AU - Liu, P.
PY - 2011
SP - 105
EP - 113
DO - 10.5220/0003511401050113
PB - SciTePress

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