Design of a scalable RSA and ECC crypto-processor

Authors:
Ming-Cheng Sun;Chih-Pin Su;Chih-Tsun Huang;Cheng-Wen Wu
Affiliations:
National Tsing Hua University, Hsinchu, Taiwan, ROC;National Tsing Hua University, Hsinchu, Taiwan, ROC;National Tsing Hua University, Hsinchu, Taiwan, ROC;National Tsing Hua University, Hsinchu, Taiwan, ROC
Venue:
ASP-DAC '03 Proceedings of the 2003 Asia and South Pacific Design Automation Conference
Year:
2003

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Abstract

In this paper, we propose a scalable word-based crypto-processor that performs modular multiplication based on modified Montgomery algorithm for finite fields GF(P) and GF(2m). The unified crypto-processor supports scalable keys of length up to 2048 bits for RSA and 512 bits for elliptic curve cryptography (ECC). Further extension of the key length can be done easily by enlarging the memory module or using the external memory resource. With the proposed parity prediction technique, our pipelined crypto-processor achieves a 512-bit RSA encryption ratè of 276 Kbps and a 160-bit ECC encryption rate of 73.3 Kbps for a 220MHz clock rate.