A credible verification method and system for public chain node workload proof

Abstract

The invention discloses a trusted verification method and system for proof of work (POW) of a public chain node. Software guard extensions SGX are utilized; a POW mechanism of a blockchain public chain is completed; two verification links are additionally increased; the characteristics of an enclave are utilized; therefore, legal POW needs to be signed through the enclave; otherwise, the POW cannot be received by other nodes of the public chain; therefore, the workload in a public chain network only can be completed on a specific hardware platform; and thus, the security and the stability of the public chain are ensured.

Description

technical field [0001] The invention belongs to the technical field of block chains, and in particular relates to a credible verification method and system for proof of workload of public chain nodes. Background technique [0002] In the operation of the blockchain public chain network, in the system that adopts the workload proof (Proof of Work), for each node, it is reported that the work it is doing is running on the client machine. On the one hand, this kind of decentralized setting can remove the influence of institutions and individuals, but on the other hand, the ability to manage users has declined, which is reflected in the fact that improper behavior of users cannot be well prohibited. Improper behavior mainly includes false reporting of workload and acceleration of heterogeneous devices: false reporting of workload refers to the fact that in order to improve the effect of computing work, the program of proof of work may be modified and simplified by a third party;...

AI Technical Summary

Problems solved by technology

[0004] False reporting of workload has three main impacts: (1) It affects the incentive mechanism. Unfair workload proof by one party can make it seize the right to bookkeeping and affect the enthusiasm of other users to follow the rules; (2) False reporting of workload will The generation speed and difficulty of blocks in the network are greatly accelerated, and it may even cause the collapse of the public chain network; (3) The program modified by the third party has caused unfairness and increased insecurity

[0005] The impact of heterogeneous device acceleration is mainly: (1) The heterogeneous devices used by users may be unsafe, which will affect the stability of the public chain; (2) Heterogeneous acceleration makes the network computing power often concentrated in a few In a large mining farm, it violates the original intention of blockchain decentralization, and the concentration of computing power also increases the probability of 51% attacks

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