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http://dx.doi.org/10.13089/JKIISC.2003.13.5.129

Dual Signature Scheme to provide efficient message decryption  

김근옥 (성균관대학교 전기전자 및 컴퓨터 공학부 정보통신 보호연구실)
남정현 (성균관대학교 전기전자 및 컴퓨터 공학부 정보통신 보호연구실)
김승주 (한국정보보호진흥원)
원동호 (성균관대학교 정보통신공학부)
Abstract
A representative payment broker system is SET and one of its signature shcemes is a dual digital signature scheme. A dual digital signature scheme expose neither user's payment information(credit card number etc.) to merchandiser, nor user's order information to bank So it keeps user's Privacy safe. The digital signature scheme like this is being necessary as E-commerce is revitalized. But a dual digital signature of SET is not appropriate for wireless environments because it needs so many computations and communications. In this paper, we propose a signcryption scheme that generates a polynomial using a payment information for merchandiser and an order information for bank in order to reduce communications. We analyze the problem of existing signcryption schemes and dual digital signature schemes. Also we analyze the security properties of the proposed scheme.
Keywords
dual signature; signcryption; polynomial;
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