Data encryption and decryption method, device, storage medium and encrypted file
US12341886B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2020 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Dec 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/062
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The application provides a data encryption and decryption method, device, storage medium, and encrypted file, and relates to the technical field of data processing. The method for data encryption includes: obtaining a first key, and performing an obfuscation operation on the first key and data to be encrypted to obtain obfuscation operation result data; obtaining a second key, and obtaining a first signature of the obfuscation operation result data according to the second key; obtaining a third key, and encrypting the first key, the data to be encrypted and the first signature using the third key to obtain a target ciphertext; obtaining a fourth key, and obtaining a second signature of the target ciphertext according to the fourth key; generating an encrypted file including the target ciphertext and the second signature. With the technical solutions of the application, security of data protection can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.