Security device including a physically unclonable functional unit and method of operating the same
By using controllers and multiple PUF units in security devices, combined with sorting lists and window control technology, the problem of reduced reliability of PUF unit key generation in the prior art is solved, and a higher reliability of security keys is achieved.
CN112087298BActive Publication Date: 2025-03-28SAMSUNG ELECTRONICS CO LTD
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Patent Information
- Application Number
- CN202010536150.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2019-06-12
- Filing Date
- 2020-06-12
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2040-06-12
AI Technical Summary
Technical Problem
There is a problem of reduced reliability when existing security devices based on physically uncloned functional (PUF) units generate keys due to environmental factors (such as PVT changes).
Method used
By introducing a controller and multiple PUF units into the security device, using sorting list and window control technology, the target PUF units and the reference PUF units are selected from the multiple PUF units, read the read data and determine the target bits to generate the security key.
Benefits of technology
Improve the reliability of security keys, reduce key errors caused by changes in environmental factors, and enhance the stability and reliability of security equipment.
✦ Generated by Eureka AI based on patent content.
Abstract
An operating method of a security device, the security device comprising a plurality of physically unclonable function (PUF) units, the method comprising: selecting a target PUF unit among the plurality of PUF units, selecting at least two reference PUF units among the plurality of PUF units based on a sorted list, reading a plurality of read-out data from the target PUF unit and the at least two reference PUF units, and determining a target bit corresponding to the target PUF unit based on the plurality of read-out data to output the determined target bit.
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