Method of time-delay encryption with keyword search and system using the same
US11784815B2 · kind B2 · utility
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Key dates
| Filing date | Aug 6, 2021 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Jun 17, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3239
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for increasing the difficulty for attackers to launch keyword guessing attacks, which uses a time-delay encryption with a keyword search based on a public key that generates searchable ciphertexts and/or files ciphertexts for keywords of at least one file that uploaded by time-delay encryption from a cloud server. A system for implementing the method is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.