Authenticated Group Key Transfer Protocol Based on Secret Sharing
نویسندگان
چکیده
منابع مشابه
On the Security of an Authenticated Group Key Transfer Protocol Based on Secret Sharing
Group key transfer protocols allow multiple parties to share a common secret key. They rely on a mutually trusted key generation center (KGC) that selects the key and securely distributes it to the authorized participants. Recently, Sun et al. proposed an authenticated group key transfer protocol based on secret sharing that they claim to be secure. We show that this is false: the protocol is s...
متن کاملSecurity and Improvement of an Authenticated Group Key Transfer Protocol Based on Secret Sharing
Recently Harn and Lin proposed a novel authenticated group key transfer protocol that a mutually trusted key generation center (KGC) can broadcast group key information to all group members at once and only authorized group members can recover the group key. This paper presents that Harn and Lin’s protocol can not withstand man-in-the-middle attack and describes the reasons and detailed process...
متن کاملOn The Group Key Transfer Protocol using Secret Sharing ⋆
Recently, some group key transfer protocols are proposed using Shamir’s secret sharing, which are claimed to be secure to resist the insider attack and the outsider attack. In fact, some claims are not really true. In this paper, we review the recently proposed protocol by Yuan et al. and the cryptanalysis presented by Olimid, then give the improved version to guarantee the security and low com...
متن کاملSecurity Analysis on a Group Key Transfer Protocol Based on Secret Sharing
• The insider and outsider attacks against the improved version (Subsection 3.1, Methods 1 and 2; Subsection 3.2 Method 1) are limited by the success of a guessing attack against the hash function. We highlight that the attacks assume the guessing of a random number (not a password, which would have been feasible!). Hence, if the hash function is properly selected, the attacks are infeasible1. ...
متن کاملSecure Key Transfer Protocol Based on Secret Sharing for Group Communications
Group key establishment is an important mechanism to construct a common session key for group communications. Conventional group key establishment protocols use an on-line trusted key generation center (KGC) to transfer the group key for each participant in each session. However, this approach requires that a trusted server be set up, and it incurs communication overhead costs. In this article,...
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ژورنال
عنوان ژورنال: IEEE Transactions on Computers
سال: 2010
ISSN: 0018-9340
DOI: 10.1109/tc.2010.40