Enhanced Anti-Counterfeiting Using Dynamic Encryption with Dual Physically Unclonable Functions

Area of Science:

• Materials Science
• Optoelectronics
• Information Security

Background:

• Physical unclonable functions (PUFs) are crucial for securing information by leveraging unique physical properties.
• Existing PUF technologies face challenges in achieving high security and preventing counterfeiting.

Purpose of the Study:

• To develop an advanced optical PUF tag with a multilayered encryption strategy.
• To enhance information security and anticounterfeiting performance through novel techniques.

Main Methods:

• Utilized Raman spectroscopy to detect multiple peaks from microwires (MWs) of various materials.
• Implemented dual encryption using distinctive Raman peaks (Ga2O3 and ZnO) for key generation.
• Employed Raman mapping for unique key generation and dynamic assignment (Key A/B).

Main Results:

• Each PUF tag generated two unique keys based on Raman mapping.
• High consistency was observed between keys from the same tag.
• Significant differences were found between keys from different tags, confirming uniqueness.

Conclusions:

• The developed optical PUF tag offers a robust dual-encryption strategy.
• Dynamic key assignment further bolsters security levels against unauthorized access.
• This approach significantly enhances information security and anticounterfeiting capabilities.