Improvements of a Group key Management based on (2,2) Secret Sharing
نویسندگان
چکیده
منابع مشابه
On 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...
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Running the key-management service of cryptographic systems in the cloud is an attractive cost saving proposition. Supporting key-recovery is an essential component of every key-management service. We observe that to verifiably support key-recovery in a public cloud, it is essential to use publicly verifiable secret-sharing (PVSS) schemes. In addition, a holistic approach to security must be ta...
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• 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 کاملA N Efficient Key Exchange Protocol Based on Secret Sharing
Group key protocols are still an important research issue in the network security, generation and sharing the secret session key is the important factor during the the groupkey transfer protocols. Usually it will be taken care of KGC. KGC encrypts session keys under another secret key shared with each entity during registration. In this paper, we propose an authenticated key transfer protocol b...
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Secret sharing schemes perform an important role in protecting se-cret by sharing it among multiple participants. In 1979, (t; n) threshold secret sharing schemes were proposed by Shamir and Blakley independently. In a (t; n) threshold secret sharing scheme a secret can be shared among n partic-ipants such that t or more participants can reconstruct the secret, but it can not be reconstructed b...
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ژورنال
عنوان ژورنال: Journal of the Korea Society of Computer and Information
سال: 2016
ISSN: 1598-849X
DOI: 10.9708/jksci.2016.21.9.073