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Dynamic multi-key obfuscation puf structure and its authentication method

An authentication method and multi-key technology, applied in the field of dynamic multi-key obfuscation PUF structure and its authentication, can solve the problems of affecting the stability of strong PUF, ineffective resistance to heuristic machine learning attacks, high hardware overhead, etc. The effect of small hardware implementation overhead

Active Publication Date: 2022-04-01
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they are not effective against evolutionary strategy-based heuristic machine learning attacks such as CMA-ES, and the added obfuscation structure leads to high hardware overhead
In addition, some of these defense technologies such as XOR Arbiter PUF will also affect the stability of strong PUF

Method used

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  • Dynamic multi-key obfuscation puf structure and its authentication method
  • Dynamic multi-key obfuscation puf structure and its authentication method
  • Dynamic multi-key obfuscation puf structure and its authentication method

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Embodiment Construction

[0036] Such as figure 1Shown is the structural representation of the dynamic multi-key obfuscation PUF structure of the present invention: this dynamic multi-key obfuscation PUF structure provided by the present invention includes PUF, non-volatile memory (NVM), true random number generator (TRNG) and register (Register); both the register and the non-volatile memory are connected to the PUF, and the true random number generator is connected to the register; the non-volatile memory is used to store the incentives generated during the authentication process; the true random number generator is used Used to generate random numbers; the register is used to store the obfuscated key generated during the authentication process.

[0037] Such as figure 2 Shown is the method flowchart of the registration phase of the authentication method of the dynamic multi-key confusion PUF structure of the present invention: the registration phase mainly includes the following steps

[0038] S1...

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Abstract

The invention discloses a dynamic multi-key obfuscation PUF structure, including PUF, nonvolatile memory, true random number generator and register; the nonvolatile memory stores the excitation generated in the authentication process; the true random number generator generates Random number; the register stores the obfuscated key generated during the authentication process. The invention also discloses an authentication method for the dynamic multi-key obfuscation PUF structure, including a registration stage and an authentication stage. The dynamic multi-key obfuscated PUF structure and its authentication method provided by the present invention can resist various types of machine learning attack methods, avoid restrictions on the number of available stimulus-response pairs, and are applicable to all existing strong PUFs It does not affect the stability of the PUF, and at the same time removes hardware such as an error correction unit and a hash circuit, thereby greatly reducing the hardware implementation cost of the PUF.

Description

technical field [0001] The invention specifically relates to a dynamic multi-key obfuscation PUF structure and an authentication method thereof. Background technique [0002] The Internet of Things (IoT) is the network of connected physical devices, vehicles, household appliances and other items with embedded electronics, software, sensors and other items. Connectivity enables these objects to connect and exchange data. According to IHS forecasts, the number of IoT devices installed worldwide will increase from 15.4 billion in 2015 to 30.7 billion in 2020, and this number will reach 75.4 billion by 2025. [0003] In the early stages of IoT development, the main focus is on basic theory and applied research. However, with the rapid development of the Internet of Things, security issues have attracted much attention and become particularly serious. In 2017, the Internet of Things Security Research Report pointed out that the total cost of global IoT security was US$348 milli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32
CPCH04L9/3278
Inventor 张吉良
Owner HUNAN UNIV