Completeness theorems for non-cryptographic fault-tolerant distributed computation
STOC '88 Proceedings of the twentieth annual ACM symposium on Theory of computing
Multiparty unconditionally secure protocols
STOC '88 Proceedings of the twentieth annual ACM symposium on Theory of computing
Verifiable secret sharing and multiparty protocols with honest majority
STOC '89 Proceedings of the twenty-first annual ACM symposium on Theory of computing
Perfectly secure message transmission
Journal of the ACM (JACM)
Reaching Agreement in the Presence of Faults
Journal of the ACM (JACM)
On sharing secrets and Reed-Solomon codes
Communications of the ACM
Communications of the ACM
Distributed Algorithms
Constant phase efficient protocols for secure message transmission in directed networks
Proceedings of the twenty-sixth annual ACM symposium on Principles of distributed computing
Protocols for secure computations
SFCS '82 Proceedings of the 23rd Annual Symposium on Foundations of Computer Science
Proceedings of the twenty-seventh ACM symposium on Principles of distributed computing
Brief announcement: perfectly secure message transmission in directed networks re-visited
Proceedings of the 28th ACM symposium on Principles of distributed computing
CANS'07 Proceedings of the 6th international conference on Cryptology and network security
Truly efficient 2-round perfectly secure message transmission scheme
EUROCRYPT'08 Proceedings of the theory and applications of cryptographic techniques 27th annual international conference on Advances in cryptology
ACNS'11 Proceedings of the 9th international conference on Applied cryptography and network security
Secure message transmission in asynchronous directed graphs
INDOCRYPT'11 Proceedings of the 12th international conference on Cryptology in India
Hi-index | 0.00 |
We re-visit the problem of perfectly secure message transmission (PSMT) in a directed network under the presence of a threshold adaptive Byzantine adversary, having unbounded computing power. Specifically, we derive the lower bounds on communication complexity of (a) two phase PSMT protocols and (b) three or more phase PSMT protocols in directed networks. Moreover, we show that our lower bounds are asymptotically tight, by designing communication optimal PSMT protocols in directed networks, which are first of their kind. We re-visit the problem of perfectly reliable message transmission (PRMT) as well. Any PRMT protocol that sends a message containing l field elements by communicating O(l) field elements, is referred as communication optimal PRMT or PRMT with constant factor overhead. Here, we characterize the class of directed networks over which communication optimal PRMT or PRMT with constant factor overhead is possible. Moreover, we design a communication optimal PRMT over a directed network that satisfies the conditions stated in our characterization.