Perfectly-Secure Key Distribution for Dynamic Conferences

@inproceedings{Blundo1992PerfectlySecureKD,
  title={Perfectly-Secure Key Distribution for Dynamic Conferences},
  author={Carlo Blundo and Alfredo De Santis and Amir Herzberg and Shay Kutten and Ugo Vaccaro and Moti Yung},
  booktitle={CRYPTO},
  year={1992}
}
In this paper we analyze perfectly secure key distribution schemes for dynamic conferences. In this setting, any member of a group of t users can compute a common key using only his private initial piece of information and the identities of the other t&1 users in the group. Keys are secure against coalitions of up to k users; that is, even if k users pool together their pieces they cannot compute anything about a key of any conference comprised of t other users. First we consider a… CONTINUE READING

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