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We present an efficient authenticated and fault-tolerant protocol (AFTD) for tree-based key agreement. Our approach is driven by the insight that when a Diffie-Hellman blinded key ...
We consider the problem of threshold secret sharing in groups with hierarchical structure. In such settings, the secret is shared among a group of participants that is partitioned ...
In P2P file sharing systems, free-riders who use others’ resources without sharing their own cause system-wide performance degradation. Existing techniques to counter freerider...
We provide a simple protocol for secret reconstruction in any threshold secret sharing scheme, and prove that it is fair when executed with many rational parties together with a s...
Shien Jin Ong, David C. Parkes, Alon Rosen, Salil ...