Privacy transaction method and device, zero knowledge proof system and privacy transaction architecture model

Abstract

The invention provides a private transaction method and device, a zero-knowledge proof system and a private transaction architecture model, relates to the technical field of block chains, and is applied to a private transaction method of a client, and the method comprises the steps: generating zero-knowledge transaction proof information; wherein the zero-knowledge transaction certification information comprises certification parameters of a user account encrypted by a public key of a supervisor; wherein the certification parameters comprise a current private bill of the user account, a to-be-transacted private bill and an updated private bill; uploading the zero-knowledge transaction proof information to a blockchain node of a blockchain system, so that the blockchain node performs validity verification on the zero-knowledge transaction proof information; if the verification is passed, carrying out private transaction with a pre-established private bill pool; the private bill pool isused for storing private bills to be transacted. According to the invention, the bill management cost is reduced, higher safety guarantee can be provided during transaction, and the legality and compliance of the transaction are guaranteed.

Description

technical field

[0001] The present invention relates to the technical field of block chains, in particular to a private transaction method and device, a zero-knowledge proof system and a private transaction architecture model. Background technique

[0002] Data privacy is an important issue today. At present, in blockchain transactions, in order to ensure more privacy of transaction data, zero-knowledge proof transactions are usually used. Existing zero-knowledge-based privacy transaction models, such as the note model taking Zcash as an example, this note model is an encrypted currency that maintains the overall privacy of the sender and receiver through zero-knowledge encryption technology. However, in the existing bill model, a user usually owns multiple bills, so transactions often involve merging or splitting bills, and if you want to know how much privacy a user owns, you need to merge all the bills of the user to know , so the existing zero-knowledge-based private tr...

Images