Subject Area
Computer Engineering, Electrical, Electronics Engineering
Abstract
In today’s world, the complexity of an IC (Integrated Circuit) has increased as features like testing, debugging, monitoring, and configuration are developed and enhanced. To accomplish this, these integrated circuits contain many embedded instruments, such as BIST (Built-In-Self-Test) controllers, on-chip sensors (which sense temperature or voltage), power management, and built-in monitoring units, among others. The IEEE 1687 working group developed the IEEE 1687 standard, also known as IJTAG (Internal Joint Test Action Group), which introduced an efficient way to access these instruments on integrated circuits. It has a more efficient way of accessing instruments than the previous IEEE 1149.1 standard and better lends itself to design reuse. The IEEE 1687 standard introduces the concept of a SIB (Segment Insertion Bit) to provide access to a segment in the scan chain consisting of one or more additional TDRs (Test Data Registers). A SIB can be accessed easily by an authorized user to access the embedded instruments. However, it is also simple for an unauthorized user to access this network with minimal knowledge. The LSIB (Locking Segment Insertion Bit) and subsequent enhancements, such as traps, honeytraps, and switching LSIBs, have been introduced previously to increase the difficulty experienced by an attacker attempting to access the instruments hidden within the network. vii This thesis will investigate the ability of different LSIB-based designs used to enhance the security of the IEEE 1687 network at a reasonable cost. In particular, the cost disparity in access time between potential attackers and authorized users will be calculated. It also introduces a new variation of SIB-based security: the E-LSIB. A well-considered strategy that balances security and authorized access time will enable test and DFT engineers to make informed decisions based on the security benefits provided.
Degree Date
Summer 2024
Document Type
Thesis
Degree Name
M.S.
Department
Electrical and Computer Engineering
Advisor
Dr. Jennifer Dworak
Second Advisor
Dr. Theodore Manikas
Third Advisor
Dr. Ping Gui
Acknowledgements
My advisor, Parents, All the family members and loved ones, and friends. God and Goddesses
Number of Pages
224
Format
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 License
Recommended Citation
Patil, Parthivi; Patil, Parthivi; and Patil, Parthivi, "HARDWARE SECURITY ENHANCEMENT OF IEEE 1687 NETWORK" (2024). Electrical Engineering Theses and Dissertations. 75.
https://scholar.smu.edu/engineering_electrical_etds/75
ETD release
Notes
I signed the ETD form to hold the thesis for uploading for 2 years.