A related method, system and related apparatus for accessing encrypted data

Abstract

This application discloses a related method, system and related device for accessing encrypted data. The method includes: the first key management center receives the encrypted data access request including the encrypted ID and the first identity ID and sends it to the authorization center; if the authorization center According to the first identification, it is judged that the second client authorizes the encrypted access authority corresponding to the encrypted identification of the first client, and then sends it to the second key management center; the second key management center obtains the first encrypted data and the encrypted key according to the encrypted identification. Key, and decrypt to obtain the decrypted data, use the first public key to encrypt and decrypt the data to obtain the second encrypted data and send it to the first key management center; the first key management center decrypts the second encrypted data according to the first private key to obtain the decrypted data and send it to the first client. It can be seen that using the authorization judgment of the authorization center improves the flexibility, timeliness and management of encrypted access authorization, effectively protects the original encrypted data, and reduces the risk of leakage caused by the shared encryption key.

Description

technical field [0001] This application relates to the technical field of blockchain information security, in particular to a related method, system and related device for accessing encrypted data. Background technique [0002] At this stage, with the development of science and technology, based on the combination of modern cryptography, distributed consensus protocol, point-to-point network communication technology and smart contract programming language, the blockchain technology realizes data exchange, processing and storage among multiple participants. Its application is becoming more and more widespread, and it has the characteristics of distributed, open and transparent, non-tamperable, collective maintenance, and privacy protection. The mainstream blockchain is divided into three types: public chain, private chain and alliance chain. Among them, the alliance chain is formed through certain interest cooperation, and each participant in the alliance chain has strong dat...

AI Technical Summary

Problems solved by technology

[0004] However, the inventor found through research that in the prior art, relevant nodes obtain encrypted data and encryption keys for private transactions in advance through P2P connection sharing, that is, relevant nodes have encrypted access authorization, and there is leakage of encrypted data and encryption keys Risks, unable to effectively protect encrypted data; and in the process of blockchain data broadcasting, whether the relevant nodes have encrypted access authorization has been fixed, once authorized, it cannot be withdrawn, poor flexibility, timeliness and management

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