Linear intrasummed multiple-bit feedback shift register
US6463448B1 · kind B1 · utility
9Cited by
11References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1999 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Sep 30, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y25/00
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A linear intrasummed multiple-bit feedback shift register is presented which comprises a multi-stage multi-bit feedback shift register and further includes an adder situated before the input to each stage and which is used to modify the shifted signals according to predefined constants. The additional intrastage summing increases the complexity of the feedback function and makes it more difficult to determine the specific structure from a limited stream of output bits, thus increasing the security of the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.