Recovering encrypted transaction information in blockchain confidential transactions
US11232442B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2020 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Feb 14, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Implementations of the present disclosure include receiving a content of a confidential transaction of a client node, by a consensus node of a blockchain network, wherein the content of the confidential transaction includes one or more commitment values of the confidential transaction generated by the client node by applying a cryptographic commitment scheme to transaction data of the confidential transaction, and encrypted transaction information generated by encrypting the transaction data using a secret key of the client node, wherein a secret key is obtained by the client node according to a threshold secret sharing scheme with a plurality of client nodes, and one or more zero-knowledge proofs of the transaction data; verifying that the confidential transaction is valid based on the content of the confidential transaction; and storing the encrypted transaction information on a blockchain of the blockchain network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.