Dynamic system bus encryption using improved differential transitional encoding
US7248696B2 · kind B2 · utility
15Cited by
30References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2002 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Jan 3, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides data encryption for a differential bus employing transitional coding. The present invention maps, encodes and encrypts input data as a logic status for a given bus transfer cycle. The mapping, encoding and encrypting of the input data changes from bus transfer cycle to bus transfer cycle. The mapping, encoding and encrypting is a function of a pseudo-random number. A logic status is differentially transmitted from a bus transmitter to a bus receiver, to be mapped, decrypted and decoded as the corresponding output data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.