Secure compression
US11468009B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2019 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Jul 8, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In embodiments, secure compression algorithms are provided that may be employed as a single operation on raw data to produce compressed and encrypted data. In embodiments, the algorithms described herein may be performed using any type of dictionary based encryption. In one embodiment, upon adding a new prefix to a dictionary table, the dictionary table may be permuted to randomize the entries into the table. The randomization may be based upon a permutation value generated by a deterministic pseudo-random generator and/or pseudo-random function. Other embodiments of randomization may be employed to provide secure compression. For example, instead of permuting the entire table upon adding a prefix, the prefix may be randomly added to the table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.