Multi-party secure computing implementation method based on block chain technology

Abstract

The invention discloses a multi-party security computing implementation method based on a blockchain technology. The method specifically comprises the following steps: step 1, compiling an intelligentcontract, wherein the intelligent contract comprises node information of each contract party, tasks of each contract party for executing the intelligent contract and task execution relationships among the tasks; step 2, publishing the intelligent contract: publishing the intelligent contract on the block chain; 3, determining an executable state: after the intelligent contract is authorized by related nodes of each contract party of the intelligent contract, determining the intelligent contract as the executable state; step 4, executing the intelligent contract, wherein different contract parties have own unique business accounts, log in node servers of nodes through node accounts of the nodes and execute tasks of the intelligent contract on the blockchain; and step 5, carrying out verification and recording of an execution result, wherein the nodes which do not participate in the intelligent contract carry out verification and state recording of the contract execution result. According to the invention, the problems of data security and privacy in the data cooperation process are solved.

Description

technical field [0001] The invention belongs to the technical field of block chains, and specifically refers to a method for implementing multi-party secure computing based on block chain technology. Background technique [0002] Multi-party secure computing means that in a distributed network, multiple users need to cooperate to complete a task. Each user holds some private data as the input of the task, and hopes to jointly complete the calculation of these data. At the same time, each user is required to Except for the calculation results, it is not possible to know any input information from other users. Secure multi-party computing is to solve the problem of completing collaborative computing between a group of distrusting parties under the premise of protecting privacy. Secure multi-party computing must ensure the independence of inputs and the correctness of calculations, while not disclosing each input data to participants other members of the calculation. It is ma...

AI Technical Summary

Problems solved by technology

There are two problems in this way: first, the synergy efficiency is very low

All the data of the smart contract is stored in all task nodes or accounting nodes. The security of the data depends entirely on the normal execution of the node engine. Once the node engine fails or has a loophole, the data is easily leaked; in addition, the smart contract saves the multi-party collaborative State data and final results, and the data in these smart contracts is still sensitive information. For the existing technology, all participants can obtain it at will, and the security is very low

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