Electronic device with encryption/decryption cells
US7319758B2 · kind B2 · utility
2Cited by
11References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2000 |
| Grant date | Jan 15, 2008 |
| Priority date | — |
| Expiry date | Apr 5, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S40/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In an electronic component including a two-way bus through which data elements travel between peripherals and a central processing unit at the rate of a clock signal, the central processing unit and at least one of the peripherals each includes a data encryption/decryption cell. Each data encryption/decryption cell uses the same secret key. The secret key is produced locally at each clock cycle in each cell from a random signal synchronous with the clock signal, and is applied to each of the cells by a one-way transmission line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.