ID-based signcryption with improved security

곽병옥; Lee， Sang-ho; Jeong Yoon Su

Zheng’s signcryption scheme is a new encryptical scheme of which can save more expense than those of the current signature encryption by using digital signature and symmetric key encryption logically. The current signcryption schemes have a problem that is to be exposed the secret key of the receiver in the case of checking repudiation of origin by the third party. To solve this problem, a solution suggested in this paper is to use multi-purpose ID-based signcryption scheme with anonymity and unlinkability. This solution is safe and more efficient than current signcryption schemes because the suggested scheme keeps the security of the random oracle model as using Weil-pairing in encryption, and follows a formal proof of semantic security of the decisional Diffie-Hellman problem.

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* 2021년 이후 발행 논문의 참고문헌은 현재 구축 중입니다.

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