A Supervisable Blockchain System and Method

Abstract

The invention relates to a supervisory blockchain system and method. The system comprises a certificate authority (CA), a key distribution center (KDC), a supervision department and a common node, wherein the CA performs identity authentication for the common node to generate registration information about the node, and the registration information is opened to a blockchain network and waits to be written into a blockchain to complete the registration of the node; the KDC prepares supervision rules, defines a complete attribute set of the supervision department, and distributes keys to the supervision department according to specific attributes of the supervision department; the supervision department acquires the keys from the KDC, monitors network transactions of the blockchain, and adopts the own keys to decrypt the node registration information in the blockchain and acquire the real identity of the node when an abnormal account occurs; and the common node interacts with the CA, performs identity authentication, and joins the blockchain to operate after completing the registration. According to the system and method disclosed by the invention, a supervisory blockchain is constructed by using ABE, signatures and other cryptography techniques, different supervision departments are allowed to supervise data of the blockchain system according to different functions, and thus the occurrence of illegal acts and the like can be prevented.

Description

technical field [0001] The invention belongs to the technical field of computer applications, and specifically relates to a supervisable block chain system and method, allowing different supervision centers to supervise the behavior of block chain system users according to different functions. Background technique [0002] Blockchain originated from Bitcoin, and its essence is a distributed storage technology with the properties of decentralization, anonymity, traceability, and non-tampering. Using blockchain technology, a new trust system can be established without a central trust agency. Therefore, it can be applied to scenarios such as financial services, sharing economy, medical health, and social management. However, in the traditional blockchain, all user account information and transaction content are public. Even if any user can read these public data, the pseudonym system adopted by the blockchain to ensure anonymity will pose a great threat to social stability. ...

AI Technical Summary

Problems solved by technology

It can be seen from the above step 6 that the invention also allows the authorized supervision center to decrypt and view the transaction ciphertext, which plays a certain role in supervision, but there is a serious problem: all transaction data exists in the form of ciphertext, which will make the supervision work of the supervision center difficult. It will become extremely complicated, especially the monitoring center may not be able to detect abnormal behaviors in time and deal with them accordingly

Once the regulatory work loses its timeliness, the efforts to crack down on illegal and criminal activities will be greatly weakened

In addition, this invention distinguishes users by attributes, but in fact there is not only one user with the same attribute, and it is impossible to know exactly who generated a transaction, that is, it is impossible to confirm its true identity when illegal and criminal acts occur. very difficult

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