Block chain shared data protection method

Abstract

The invention discloses a block chain shared data protection method, which relates to the technical field of block chains, and comprises the following steps of: extracting the same fields in a plurality of transactions: combining the same fields to obtain a verification code matrix I, a verification code matrix II and a verification code matrix III; verifying the verification code matrix I, the verification code matrix II and the verification code matrix III; and extracting fields of the same transaction from the verified certificate code matrix I, the verified verification code matrix II andthe verified verification code matrix III, and forming a transaction code matrix. According to the scheme, the information in the same transaction is split and packaged and verified together with thesame split information in other multiple transactions, so that the transaction efficiency is not influenced, and the number of transactions needing to be verified can be reduced under the condition ofmore transactions; in addition, the verifier does not know which part of the same transaction is split under the condition that the hash of the complete transaction of the transaction party does notexist, so that the privacy protection of the transaction information can be improved.

Description

technical field

[0001] The invention relates to the technical field of block chains, in particular to a protection method for block chain shared data. Background technique

[0002] At present, most of the on-chain data on the blockchain adopts the transaction hash instead of plaintext to protect the privacy of the on-chain data. The on-chain plaintext is not conducive to the protection of the transaction privacy data of both parties, and the on-chain hash does not store data in essence. On the blockchain network, it is also impossible to realize the data sharing and control sharing permissions on the chain, but only to verify the data. Moreover, the conventional transaction verification is a separate horizontal verification one by one, and the transactions are not related to each other; while the scheme is to integrate multiple transactions into vertical verification, and the transactions are related to each other. For example: suppose multiple transactions are initiated, an...