Presentation 1998/12/11
Finite Fields for Software Implementation of Elliptic Curve Cryptosystems
Qiao Guopei, Kwok-Yan Lam,
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Abstract(in English) This paper identified a family of finite fields over which efficient elliptic curve cryptosystems can be obtained. Most reported elliptic curve cryptosystems are defined over finite fields of characteristic two i. e. GF (2^n). It is widely believed that elliptic curves defined over such finite fields can have more efficient implementation hardware. Furthermore, the fastest software implementation reported to date is also based on curves defined over such fields. In this paper, we show that GF (2^n) is not the most suitable field for software implementation. We identified a family of finite fields of the form GF (2^n-s), where 2^n-s is a large prime and s is a random single precision integer, which is more suitable for software implementation of elliptic curve cryptosystems. Experimental results on some popular software implementation platforms including DEC Alpha, SUN SPARC and Intel Pentium show that we can achieve faster software implementation of the group addition and scalar multiplication of elliptic curve over finite field GF (2^n-s) than over the field GF (2^n).
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Keyword(in English) Public Key Cryptography / Elliptic curve / Elliptic Curve Cryptosystems / Fast software encryption
Paper # ISEC98-60
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Committee ISEC
Conference Date 1998/12/11(1days)
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Registration To Information Security (ISEC)
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Finite Fields for Software Implementation of Elliptic Curve Cryptosystems
Sub Title (in English)
Keyword(1) Public Key Cryptography
Keyword(2) Elliptic curve
Keyword(3) Elliptic Curve Cryptosystems
Keyword(4) Fast software encryption
1st Author's Name Qiao Guopei
1st Author's Affiliation Department Computer Science National University of Singapore()
2nd Author's Name Kwok-Yan Lam
2nd Author's Affiliation Department Computer Science National University of Singapore
Date 1998/12/11
Paper # ISEC98-60
Volume (vol) vol.98
Number (no) 465
Page pp.pp.-
#Pages 9
Date of Issue