Method and system for time window encryption tokenization of data
US10747889B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2018 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Dec 29, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/42
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A first raw value of a first field from the first set of fields is encrypted to generate a first token using a symmetric key encryption mechanism based on a first cryptographic key associated with a first time window after which the first cryptographic key is no longer valid for tokenization of raw fields of raw log records. After the first time window has elapsed, a second raw value of a second field from the second set of fields is encrypted to generate a second token using the symmetric key encryption mechanism based on a second cryptographic key that is different from the first cryptographic key. The second cryptographic key is associated with a third time window that occurs after the first time window and after which the second cryptographic key is no longer valid for tokenization of raw fields of raw log records.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.