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We propose a protocol to securely compute the solution to the (single source) Shortest Path Problem, based on Dijkstra's algorithm and Secure Multiparty Computation. Our protocol improves state of the...
We study the problem of securely building single-commodity multi-markets auction mechanisms. We introduce a novel greedy algorithm and its corresponding privacy preserving implementation using secure ...
We present novel security requirements for second price auctions and a simple, efficient and practical protocol that provably maintains these requirements. Novel requirements are needed because common...
We consider generic Garbled Circuit (GC)-based techniques for Secure Function Evaluation (SFE) in the semi-honest model. We describe efficient GC constructions for addition, subtraction, multiplicat...
We consider enhancing a sealed-bid single-item auction with privacy concerns, our assumption being that bidders primarily care about monetary payoff and secondarily worry about exposing information ...
In this note, we describe a correction to the cryptosystem proposed in [1, 2]. Although the correction is small and does not af- fect the performance of the protocols from [1, 2], it is necessary as...
We argue that threshold trust is not an option in most of the reallife electronic auctions.We then propose two new cryptographic Vickrey auction schemes that involve, apart from the bidders and the ...

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