导言隐私求交(Private Set Intersection, PSI)可能是被研究最多的具体的多方安全计算(Secure Multiparty Computation, MPC)协议。PSI本质上是一种特殊的多方安全计算协议: 计算双方各自有一个集合,要求双方协…
If polygon A has n edges and polygon B has m edges, then the number of edge-edge intersection tests is nm, so the algorithm has O(nm) time complexity (quadratic in time). The use of BSP trees reduces the number of comparisons since edges of A on one side of a splitting line need...
Practical private set intersection protocols with linear complexity - Cristofaro, Tsudik - 2010 () Citation Context ...ested protocol is linear in the cardinality of the input sets. Finally, and most recently, a private set intersection variant based on blind RSA signature schemes was proposed by...
The intersection is all values that are in this sorted set and each of the other iterables. >>> ss = SortedSet([1, 2, 3, 4, 5]) >>> ss.intersection([4, 5, 6, 7]) SortedSet([4, 5]) Parameters: iterables –iterable arguments Returns: new sorted set intersection...
Private Set Intersection (PSI) is one of important privacy preserving protocols. Usually, previous PSI is executed by 2-parties, a client and a server, where both a client and a server compute jointly the intersection of their private sets in such a way that at the end only the client ...
Private Set Intersection (PSI) is a cryptographic technique that allows two parties to compute the intersection of their sets without revealing anything except the intersection. We use fully homomorphic encryption to construct a fast PSI protocol with a small communication overhead that works ...
It is useful because it can perform mathematical set operations such as union, intersection, and difference. Additionally, sets are faster to search than lists or dictionaries because they are implemented using hash tables, which have a constant average-case time complexity for operations such as ...
This paper considers time-space tradeoffs for various set operations. Denoting the time requirement of an algorithm by T and its space requirement by S, it is shown that TS=Ω(n2) for set complementation and TS=Ω(n32) for set intersection, in the R-way branching program model. In the ...
Protocols for Private Set Intersection (PSI) are important cryptographic primitives that perform joint operations on datasets in a privacy-preserving way. They allow two parties to compute the intersection of their private sets without revealing any additional information beyond the intersection itself. Un...
Protocols for Private Set Intersection (PSI) are important cryptographic techniques to perform joint operations on datasets in a privacy-preserving way. They allow two parties to compute the intersection of their private sets without revealing any additional information beyond the intersection itself, for...