A randomized protocol for signing contracts
Communications of the ACM
STOC '87 Proceedings of the nineteenth annual ACM symposium on Theory of computing
Journal of Cryptology
Complexity and security of distributed protocols
Complexity and security of distributed protocols
How to Solve any Protocol Problem - An Efficiency Improvement
CRYPTO '87 A Conference on the Theory and Applications of Cryptographic Techniques on Advances in Cryptology
Multiparty Computations Ensuring Privacy of Each Party's Input and Correctness of the Result
CRYPTO '87 A Conference on the Theory and Applications of Cryptographic Techniques on Advances in Cryptology
FOCS '95 Proceedings of the 36th Annual Symposium on Foundations of Computer Science
Algorithms for selfish agents mechanism design for distributed computation
STACS'99 Proceedings of the 16th annual conference on Theoretical aspects of computer science
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Secure distributed computing addresses the problem of performing a computation with a number of mutually distrustful participants, in such a way that each of the participants has only limited access to the information needed for doing the computation. In the presence of a third party, completely trusted by all participants the problem is trivially solv able. However, this assumption is in many applications non-realistic. Over the past two decades, a number of solutions requiring no trusted third party have been developed using cryptographic techniques. The disadvantage of these cryptographic solutions is the excessive communication overhead they incur. In this paper, we will show how to overcome these disadvantages and thus enable secure distributed computations in practice. Our approach uses mobile agents employing these cryptographic techniques to provide for a trade-off between communication overhead and trust. The communication overhead problem would be solved if the communicating parties were brought close enough together. Our solution is to use mobile agents to execute the cryptographic protocols. Of course, a mobile agent needs to trust his execution platform, but we show that the trust requirements in this case are much lower than for a classical trusted third party.