Invasive attacks, such as microprobing or focused-ion-beam (FIB) circuit editing are serious threats to security-related semiconductors. To ensure that there is security against invasive attacks, an effective countermeasure is to use a protective layer as a secure shield. Previous secure shield methods can be classified into one of two categories; detection circuits based on the delay difference or block ciphers. For the former, timing asymmetries caused by the capacitance of the probe are detected. The main drawback of this method is that it is highly vulnerable to chip editing by FIB equipment. FIB circuit editing can easily cripple the detection circuits of the secure shield. In contrast, the cryptographically secure shield based on the block cipher can provide strong protection against FIB circuit editing. However, it is prone to microprobing attacks because of its inability to detect the capacitance load of the probe. In this article, we propose a robust secure shield architecture against invasive attacks, including both probe attempts and the FIB circuit editing. The proposed method is based on the detection circuits with low hardware overhead and fast-analysis time and includes protection circuits to prevent information from being leaked.
|Number of pages||12|
|Journal||IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems|
|Publication status||Published - 2020 Oct|
Bibliographical noteFunding Information:
Manuscript received February 28, 2019; revised May 26, 2019 and July 31, 2019; accepted September 17, 2019. Date of publication September 30, 2019; date of current version September 18, 2020. This work was supported by the National Research Foundation of Korea grant funded by the Korea Government (MSIT) under Grant 2019R1A2C3011079. This article was recommended by Associate Editor S. Ghosh. (Corresponding author: Sungho Kang.) The authors are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea (e-mail: firstname.lastname@example.org; email@example.com; firstname.lastname@example.org; email@example.com). Digital Object Identifier 10.1109/TCAD.2019.2944580
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All Science Journal Classification (ASJC) codes
- Computer Graphics and Computer-Aided Design
- Electrical and Electronic Engineering