Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6883267 | Computers & Electrical Engineering | 2018 | 9 Pages |
Abstract
This study presents an optical secure circuit for physical attack protection. On-chip photodiodes are integrated for optical energy harvesting to operate the optical secure circuit in a standard CMOS process. The aim of the proposed optical secure circuit is to protect the secure contents of the IC against external unpowered attacks. When invasive unpowered physical attacks such as decapsulation are attempted, the photodiodes accumulate charge from ambient light and activate the secure circuit path that shuts down the secure data path. The proposed secure circuit is fabricated using a standard 0.18â¯Âµm 1P6M CMOS process with a small active area of 0.34 mm2 with fully integrated on-chip photodiodes. When the chip is decapsulated and unpowered, the supply voltage of 600â¯mV with the ambient light is generated by the optical harvester, and the security data paths are shut down in 500â¯ns.
Keywords
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Hyungseup Kim, Youngwoon Ko, Yeongjin Mun, Byeoncheol Lee, Dong Kyue Kim, Byong-Deok Choi, Ji-Hoon Kim, Hyoungho Ko,