Supervisable distributed confidential transaction system and method

Abstract

The invention provides a supervisable distributed confidential transaction method and system. A supervisor generates public parameters by using a non-interactive zero-knowledge proof system generation algorithm, generates public and private key pairs by using an integrated encryption signature method, and uses a private key as a global supervision private key; the participant generates a registration request, and sends a public and private key pair, a secret balance and account public information to the supervisor for registration; the supervisor monitors the transaction of the participant transaction party and confirms whether the transaction amount and the account balance of the transaction initiator are in a reasonable interval; and if the confirmation result is passed, confidential transaction is carried out between the participant transaction parties, confidential transaction records passing validity verification is uploaded, and the account state of each participant transaction party is updated by each participant transaction party. According to the invention, confidentiality protection can be provided for a user, and a supervisor is allowed to implement efficient penetration type global supervision.

Description

technical field [0001] The invention belongs to the technical field of information monitoring, and in particular relates to a supervised distributed confidential transaction system and method. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] In recent years, distributed transaction systems based on blockchain have received unprecedented attention, and two major issues that need to be solved urgently are privacy protection and regulatory auditing. The distributed confidential transaction system uses public key encryption technology to protect the transaction amount, which not only provides confidentiality protection, but also makes it impossible for regulators to effectively supervise confidential transactions. [0004] According to the inventor's knowledge, the currently commonly used solution is to require users to entrust the decryption ...

AI Technical Summary

Problems solved by technology

The distributed confidential transaction system uses public key encryption technology to protect the transaction amount. While providing confidentiality protection, it also makes it impossible for regulators to effectively supervise encrypted transactions

[0004] As far as the inventor knows, the current common solution is to require the user to entrust the decryption private key to the supervisor, but this solution has some disadvantages. First, the supervision relies on the active cooperation of the user, and the supervisor cannot implement penetrating supervision, and the usability is not ideal ; Second, the supervisor needs to manage a large-scale decryption private key database, which leads to low efficiency of global supervision; third, the supervisor implements supervision by mastering the user's private key, which may be corrupted and damage the security of the transaction system

Images