Techniques for improving random number generation security
US9417846B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2015 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Dec 7, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/588
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for improving random number generation (RNG) security for a data processing system includes a storage subsystem of a processing unit receiving a first deliver a random number (DARN) operation. The storage subsystem issues the first DARN operation with a first value, retrieved from a first base address register (BAR), on a first bus. The processing unit receives (from a first RNG unit) at least one of a first data and a first indication (that indicate whether the first RNG unit is functional) when a second value stored in a second BAR of the first RNG unit is the same as the first value. In response to the first and second values not being the same or the first RNG unit not being functional, the storage subsystem issues the first DARN operation with the first value on a second bus that is coupled to a second RNG unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.