Construction method of division protocol based on cryptology in distributed computation
A distributed computing and construction method technology, applied in key distribution, can solve the problems of network attack defense and countermeasures, and achieve the correctness and legitimacy of the algorithm, and overcome the huge communication volume and low computational complexity Effect
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[0044] The division protocol construction method in the present invention will be further described below in conjunction with specific embodiments and schematic diagrams.
[0045] Under the condition of secure multi-party computing, the traditional computing method is based on the Byzantine consensus agreement, and the communication volume between members is relatively large. Our computing is based on linear secret sharing.
[0046] Linear Sharing and Refactoring: In Domain G q , given a secret value s, the sender randomly selects t-1 (t≤n) random numbers (r 1 , r 2 ,...,r t-1 ), forming the equation f s (x)=s+r 1 x+…+r t-1 x t-1 . For any member P in secure multi-party computation i (where i∈[1,n], n is the total number of members), with identity ID i , then the shared value of the secret s obtained by the member is c i = f s (ID i ). If there are m(m≥t) members who want to share {s 1 ,s 2 ,...,s m} to restore the original secret value s, then we can solve ...
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