A 2-Mpixel CMOS Image Sensor with Device Authentication and Encryption Key Generation based on Physically Unclonable Function

2019 June23-27

Authors Shunsuke Okura*, Ryota Ishiki**, Syohei Takano**, Masayoshi Shirahata**, Takaya Kubota**, Mitsuru Shiozaki**, Kenichiro Ishikawa*, Isao Takayanagi*, and Takeshi Fujino**

*Brillnics Japan Inc.
**Research Organization of Science and Engineering Ritsumeikan University

Proceeding of the 2019 International Image Sensor Workshop, pp. 119-122, 2019

In Internet of Things (IoT) applications, security of sensor information is being discussed seriously.  We have demonstrated a utilization of pixel offset variations in CMOS image sensors (CIS) for Physically Unclonable Function (PUF) to authenticate individual CIS device.  In this paper, we present further application of CIS PUF to generate keys for cryptographic purposes, effectively binding the key to the hardware.