Security enhancement of customer replaceable unit monitor (CRUM)
US9886571B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2016 |
| Grant date | Feb 6, 2018 |
| Priority date | — |
| Expiry date | Jul 6, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0876
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A component subsystem and a method for authenticating the component subsystem. The component subsystem may be installed in a host device. The method can include an authentication protocol, wherein the host device sends a test voltage value to the component subsystem which, in turn, generates a test voltage based on the test voltage value. The test voltage is applied to a test cell that includes a wordline, a bitline, and a memory film. A response voltage is read from the bitline and compared to an expected value. If the response voltage matches the expected value, host device and/or component subsystem functionality is enabled. If the response voltage does not match the expected value, the host device and/or component subsystem functionality is disabled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.