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Ethical Standards I

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Updated: Jul 30, 2025

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

Published on: June 23, 2018

Highly Trustworthy In-Sensor Cryptography for Image Encryption and Authentication.

Bangjie Shao¹, Tianqing Wan¹, Fuyou Liao^1,2

¹Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong 999077, People's Republic of China.

|May 15, 2023

Summary

This summary is machine-generated.

This study introduces in-sensor cryptography, integrating image capture and key generation in one device for enhanced Internet of Things security. This novel approach ensures highly trustworthy cryptography by binding security keys directly to captured images.

Keywords:

cryptography in-sensor computing physically unclonable function two-dimensional (2D) semiconductor vision sensor

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Area of Science:

Materials Science
Cryptography
Internet of Things Security

Background:

Secure image transmission over the Internet of Things (IoT) is critical.
Current methods separate image capture and security modules, creating vulnerabilities during data transmission.
Need for integrated, highly secure solutions for IoT image data.

Purpose of the Study:

To develop in-sensor cryptography for simultaneous image capture and security key generation.
To enhance the trustworthiness and security of image data in IoT environments.
To create a robust system resistant to passive attacks and unauthorized modifications.

Main Methods:

Utilized a 256 molybdenum disulfide (MoS2) phototransistor array.
Harvested electronic and optoelectronic binary keys using the array's intrinsic properties.
Implemented a physically unclonable function (PUF) for key generation.
Upgraded keys to multiple-state ternary and double-binary formats.

Main Results:

Achieved in-sensor cryptography by integrating image capture and key generation.
Generated keys inherently bound to captured images, ensuring high trustworthiness.
Demonstrated keys with high uniformity, uniqueness, randomness, and coding capacity.
Validated the system for secure image encryption and authentication.

Conclusions:

In-sensor cryptography offers a paradigm shift for secure IoT image transmission.
The MoS2 phototransistor array enables robust and unique key generation.
This technology provides enhanced protection against data interception and tampering.