Abstract
Elliptic curve cryptosystems are expected to be a next standard of public-key cryptosystems. A security level of elliptic curve cryptosystems depends on a difficulty of a discrete logarithm problem on elliptic curves. The security level of a elliptic curve cryptosystem which has a public-key of 160-bit is equivalent to that of a RSA system which has a public-key of 1024-bit. We propose an elliptic curve cryptosystem LSI architecture embedding word-based Montgomery multipliers. A Montgomery multiplication is an efficient method for a finite field multiplication. We can design a scalable architecture for an elliptic curve cryptosystem by selecting structure of word-based Montgomery multipliers. Experimental results demonstrate effectiveness and efficiency of the proposed architecture. In the hardware evaluation using 0.18 μ m CMOS library, the high-speed design using 126 Kgates with 20 × 8-bit multipliers achieved operation times of 3.6 ms for a 160-bit point multiplication.
Original language | English |
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Pages (from-to) | 243-249 |
Number of pages | 7 |
Journal | IEICE Transactions on Electronics |
Volume | E89-C |
Issue number | 3 |
DOIs | |
Publication status | Published - 2006 |
Keywords
- Elliptic curve cryptosystem
- LSI design
- Montgmery multiplier
- Public-key cryptosystem
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering