Structure and method for random code generation
US11907685B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2019 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Sep 12, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/83
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a structure for implementing a Physically Unclonable Function (PUF)-based random number generator and a method for forming the structure. The structure includes same-type, same-design devices in a semiconductor layer. While values of a performance parameter exhibited by some devices (i.e., first devices) are within a range established based on the design, values of the same performance parameter exhibited by other devices (i.e., second devices) is outside that range. A random distribution of the first and second devices is achieved by including randomly patterned dopant implant regions in the semiconductor layer. Each first device is separated from the dopant implant regions such that its performance parameter value is within the range and each second device has a junction with dopant implant region(s) such that its performance parameter value is outside the range or vice versa. A random number generator can be operably connected to the devices to generate a PUF-based random number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.