Method and device for cryptographically processing data
US7162031B1 · kind B1 · utility
8Cited by
7References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1999 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Dec 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/046
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
For cryptographically processing data, data (X) and a key (K) are fed to a cryptographic process (P), which may be a known process. In order to veil the nature of the process (P), auxiliary values as fed to the process, such as a supplementary key (K*), using which a supplementary process (P*) generates the key proper (K). The combination of the original process (P) and the supplementary process (P*) provides an unknown process, hence, the relationship between the supplementary key (K*) and the processed data (Y) is unknown. As a result, improved cryptographic security results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.