Method of uniforming physical random number and physical number generation device
US7461111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2003 |
| Grant date | Dec 2, 2008 |
| Priority date | — |
| Expiry date | Aug 27, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/588
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of uniforming physical random numbers while concurrently maintaining a random number generating rate and ensuring security. The method sequentially inputs a plurality of physical random numbers to a shift register to hold them there, and shifts them every time a reference pulse signal rises. Physical random numbers held in the shift register are randomly selected and output by a selector based on part of them. Accordingly, physical random numbers input to the shift register are uniformed and then output even thought they have a deviation, thereby eliminating the chance of not outputting random numbers or letting others recognize the deviation of random numbers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.