Tokenization using multiple reversible transformations
US9736142B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2016 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Sep 6, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/061
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Technologies for tokenizing data including a computing device to extract plaintext data from an input file to be tokenized. The computing device performs data domain-specific format-preserving encryption on the extracted plaintext data based on a first cryptographic key to generate encrypted data and replaces one or more portions of the encrypted data with corresponding portions of alternative data based on a mapping table that maps encrypted data to alternative data. The computing device further performs data domain-specific format-preserving encryption on the alternative data based on a second cryptographic key to generate a token and stores the token in an output file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.