Data type preserving encryption
US7418098B1 · kind B1 · utility
43Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2000 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Sep 17, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0637
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and a system for encryption of a data element in a relational database, wherein each data element includes a string of at least one character. The method includes the steps of: reading the type of a data element which is to be encrypted; interpreting the data type to form a restricting character set for each character of the data element; and encrypting each character of the data element into an encrypted character selected from the restricting character set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.