Taiwan semiconductor manufacturing company, ltd. (20240214226). I/O CIRCUIT DESIGN FOR SRAM-BASED PUF GENERATORS simplified abstract

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I/O CIRCUIT DESIGN FOR SRAM-BASED PUF GENERATORS

Organization Name

taiwan semiconductor manufacturing company, ltd.

Inventor(s)

Jui-Che Tsai of Tainan City (TW)

Shih-Lien Linus Lu of Hsinchu (TW)

Cheng Hung Lee of Hsinchu (TW)

Chia-En Huang of Hsinchu County (TW)

I/O CIRCUIT DESIGN FOR SRAM-BASED PUF GENERATORS - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240214226 titled 'I/O CIRCUIT DESIGN FOR SRAM-BASED PUF GENERATORS

The abstract describes an input/output circuit for a physical unclonable function (PUF) generator circuit, which includes a PUF cell array and at least one input/output circuit.

  • The PUF generator comprises a PUF cell array with multiple bit cells arranged in columns and rows.
  • The input/output circuit is connected to neighboring columns of the PUF cell array and includes a sense amplifier (SA) without a cross-coupled pair of transistors.
  • The SA consists of two cross-coupled inverters with no access transistor and an SA enable transistor.
  • The input/output circuit is designed to access and determine logical states of at least two bit cells in neighboring columns to generate a PUF signature.

Potential Applications: - Secure authentication systems - Anti-counterfeiting measures - Secure key generation for encryption

Problems Solved: - Preventing cloning of PUF signatures - Enhancing security in electronic systems

Benefits: - Improved security measures - Reliable authentication processes - Enhanced encryption key generation

Commercial Applications: Title: Secure Authentication Systems Using PUF Technology This technology can be utilized in industries such as cybersecurity, IoT devices, and secure communication systems to enhance security measures and prevent unauthorized access.

Questions about the technology: 1. How does the input/output circuit enhance the security of the PUF generator? 2. What are the potential implications of using this technology in IoT devices?


Original Abstract Submitted

disclosed is an input/output circuit for a physical unclonable function generator circuit. in one embodiment, a physical unclonable function (puf) generator includes: a puf cell array comprising a plurality of bit cells configured in a plurality of columns and at least one row, and at least one input/output (i/o) circuit each coupled to at least two neighboring columns of the puf cell array, wherein the at least one i/o circuit each comprises a sense amplifier (sa) with no cross-coupled pair of transistors, wherein the sa comprises two cross-coupled inverters with no access transistor and a sa enable transistor, and wherein the at least one i/o circuit each is configured to access and determine logical states of at least two bit cells in the at least two neighboring columns; and based on the determined logical states of the plurality of bit cells, to generate a puf signature.

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