Method and apparatus for encrypting and decrypting product information
US10778427B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 2020 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Jan 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present specification discloses a blockchain-based method and apparatus for encrypting and decrypting product information. A producer may encrypt production information based on a unique secret code of a product. When a distributor is present, the distributor may unidirectionally generate a distribution key according to the unique secret code, and the distributor may further generate a distribution information encryption key according to the distribution key, encrypt distribution information, and generate a next distribution key according to the distribution information encryption key. That is, the product information is encrypted by unidirectionally generating keys successively along the chain. The production information is encrypted and stored based on characteristics that the unique secret code of the product is accessible only to the producer and a buyer and the blockchain is tamper-proof and forgery-proof, so that the production information is highly confidential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.