(2,2) 비밀분산법에 기반한 그룹키 관리기법의 보안과 개선
Improvements of a Group key Management based on (2,2) Secret Sharing
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In 2014, Wuu et al. proposed a group key management scheme based on (2,2) secret sharing. They asserted that their scheme satisfies security requirements and mutual authentication. But this paper pointed out that their scheme does not satisfy mutual authentication and impersonating attack. In this paper, we describe the reasons and processes that a malicious group member can impersonate the Group Key Distributor. To fill the gaps, we discuss the problems, and propose an improved protocol.
Abstract
In 2014, Wuu et al. proposed a group key management scheme based on (2,2) secret sharing. They asserted that their scheme satisfies security requirements and mutual authentication. But this paper pointed out that their scheme does not satisfy mutual authentication and impersonating attack. In this paper, we describe the reasons and processes that a malicious group member can impersonate the Group Key Distributor. To fill the gaps, we discuss the problems, and propose an improved protocol.
참고문헌 (12)
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- Lih-Chyau Wuu, "Group Key Management based on (2, 2) Secret Sharing", KSII Transactions on Internet and Information Systems, 8(3), pp.1144~1156 (2014), 한국인터넷정보학회[DOI]
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