한국전자거래학회지 (The Journal of Society for e-Business Studies)
- 제9권1호
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- Pages.209-220
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- 2004
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- 2288-3908(pISSN)
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- 2765-3846(eISSN)
효율적 전자상거래를 위한 유한체 서브그룹 기반의 사용자 인증 프로토콜 설계
Design of GE subgroup based User Authentication Protocol For efficient Electric Commerce
초록
If protocol has fast operations and short key length, it can be efficient user authentication protocol. Lenstra and Verheul proposed XTR. XTR have short key length and fast computing speed. Therefore, this can be used usefully in complex arithmetic. In this paper, to design efficient user authentication protocol we used a subgroup of Galois Field to problem domain. Proposed protocol does not use GF(p/sup 6/) that is existent finite field, and uses GF(p²) that is subgroup and solves problem. XTR-ElGamal based user authentication protocol reduced bit number that is required when exchange key by doing with upside. Also, proposed protocol provided easy calculation and execution by reducing required overhead when calculate. In this paper, we designed authentication protocol with y/sub i/ = g/sup b.p/sup 2(i-1)//ㆍv mol q, 1(equation omitted) 3 that is required to do user authentication.