Method and apparatus for tokenization of sensitive sets of characters
US8578176B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 2008 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Sep 26, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0891
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A method and system for secure handling of sensitive sets of characters in a distributed hierarchical system are disclosed, comprising at least one local server on a lower hierarchic level and at least one central server at a higher hierarchic level. The method comprises the steps: receiving a sensitive set of characters in said local server; replacing a part of said sensitive set of characters with a token to form a tokenized set of characters, said token belonging to a subset of possible tokens assigned to the local server by the central server; transferring at least one of said sensitive set of characters and said tokenized set of characters to the central server; and canceling said sensitive set of characters from said local server within a limited time from said transferring, while maintaining said tokenized set of characters in a local database connected to said local server.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.