PUF Optimization Method and Device Based on Nanomaterials and Fluid Chaotic Effect

Abstract

The present application relates to a PUF optimization method and device based on nanomaterials and fluid chaotic effect. The method includes: synthesizing nanomaterials with regulated morphology, size and surface properties, dispersing the nanomaterials into a solution, adjusting the water / oil interface, temperature and solution concentration, controlling the anisotropic encapsulation process of the liquid-nano-liquid interface, generating the physical fingerprint of the PUF based on the synergistic effect of the nanomaterials and the fluid chaotic effect, and optimizing the randomness of the PUF by adjusting the distribution of the nanomaterials. Using this method can improve the stability, randomness and uniqueness of the PUF.

Description

Technical Field

[0001] This application relates to the technical field of physically unclonable functions, and particularly to a PUF optimization method and device based on nanomaterials and fluid chaotic effects. Background Art

[0002] Physically unclonable function (PUF), as a key technology to ensure chip security, plays an important role in many fields. However, with the continuous expansion of application scenarios and the increasing improvement of security requirements, a series of problems have gradually emerged in existing PUF technologies, seriously restricting their further development and application. PUF is a technology that generates unique identifiers based on the physical differences of chips. With its unique advantages of utilizing the natural physical differences in chip manufacturing and avoiding the risks of key leakage and tampering, it has been widely used in high-security demand fields such as integrated circuits, information security, copyright protection, and Internet of Things device authentication. In the authentication of Internet of Things devices, PUF technology assigns a unique "fingerprint" to each device, ensuring the authenticity and security of the device identity, effectively preventing the device from being forged and illegally accessed, and guaranteeing the safe and stable operation of the entire Internet of Things system.

[0003] Existing PUF technologies perform poorly in terms of environmental adaptability. Taking delay line PUF and oscillator PUF based on physical differences in the chip manufacturing process as examples, when facing extreme environments such as high temperature, high humidity, and vibration, the physical properties of the materials in the chip will change due to environmental factors. For example, temperature changes will cause fluctuations in the conductivity and capacitance values of the materials, which will directly affect the delay time or oscillation frequency in the circuit, resulting in unstable "fingerprints" generated by PUF and unable to provide reliable security protection for the system. There are also deficiencies in its uniqueness and randomness. In the process of large-scale chip production, due to the similarity of manufacturing processes, the "fingerprints" generated based on physical differences between different chips are prone to similarity; moreover, under different time and environmental conditions, the "fingerprints" of the same chip may also show a high degree of similarity, which makes it easy for attackers to bypass the security mechanism by using the coincidence or similarity of "fingerprints" when the PUF system faces security attacks, greatly reducing the security of the system. The anti-interference ability of existing PUF technologies is weak. When facing external physical attacks such as side-channel attacks, thermal attacks, and electromagnetic attacks, the internal physical parameters of the system are extremely vulnerable to interference and change, thus destroying the normal generation process of "fingerprints", making it difficult for the PUF system to resist various complex attacks and unable to meet the strict security requirements of high-security demand scenarios. Summary of the Invention

[0004] Based on this, it is necessary to provide a PUF optimization method and device based on nanomaterials and fluid chaotic effects that can face complex and extreme environments for the above technical problems.

[0005] A PUF optimization method based on nanomaterials and fluid chaotic effect, the method comprising:

[0006] Synthesizing nanomaterials with regulated morphology, size and surface properties, and dispersing the nanomaterials into a solution;

[0007] Adjusting the water / oil interface, temperature and solution concentration to control the anisotropic encapsulation process of the liquid-nano-liquid interface, wherein nanoparticles are introduced at the interface to stimulate the non-linear dynamic behavior of the fluid chaotic effect;

[0008] Based on the synergistic effect of nanomaterials and fluid chaotic effect, generating the physical fingerprint of the PUF, and optimizing the randomness of the PUF by adjusting the distribution of the nanomaterials.

[0009] In one embodiment, it further comprises: real-time monitoring of environmental factors and dynamically adjusting the parameters of the PUF using a feedback mechanism.

[0010] In one embodiment, the nanomaterials include: gold nanoparticles, magnetic nanoparticles and fluorescent nanoparticles.

[0011] In one embodiment, it further comprises: synthesizing nanomaterials with regulated morphology, size and surface properties by surfactant and functional group modification technology.

[0012] In one embodiment, it further comprises: by adjusting the water / oil interface, temperature and solution concentration, changing the interfacial properties of the liquid and nanoparticles, and controlling the anisotropic encapsulation process of the liquid-nano-liquid interface.

[0013] In one embodiment, it further comprises: by adjusting the water / oil interface, temperature and solution concentration, precisely regulating the fluid flow rate, viscosity and density using a microfluidic chip, and changing the interfacial properties of the liquid and nanoparticles.

[0014] In one embodiment, it further comprises: real-time monitoring of environmental temperature, humidity and vibration, and dynamically adjusting the fluid flow rate, viscosity and density of the microfluidic chip using a feedback mechanism to adjust the nanomaterial distribution and fluid chaotic effect of the PUF.

[0015] A PUF optimization device based on nanomaterials and fluid chaotic effect, the device comprising:

[0016] A nanomaterial synthesis module for synthesizing nanomaterials with regulated morphology, size and surface properties, and dispersing the nanomaterials into a solution;

[0017] A fluid chaotic effect introduction module is used to regulate the water / oil interface, temperature, and solution concentration, and control the anisotropic encapsulation process of the liquid-nano-liquid interface. Among them, nanoparticles are introduced on the interface to stimulate the non-linear dynamic behavior of the fluid chaotic effect;

[0018] An optimization module is used to generate the physical fingerprint of the PUF based on the synergistic effect of nanomaterials and the fluid chaotic effect, and optimize the randomness of the PUF by adjusting the distribution of the nanomaterials.

[0019] The above PUF optimization method and device based on nanomaterials and the fluid chaotic effect are different from the traditional technology of selecting a certain type of parameter as the PUF from the hardware system. In this application, the anisotropy of the non-linear dynamic behavior of the fluid chaotic effect excited by nanomaterials at the water / oil interface is used as the PUF, enabling the PUF to maintain stability in extreme environments such as high temperature, high humidity, and vibration. Secondly, due to the adjustable characteristics of nanomaterials, more randomness can be introduced during the generation of the PUF, thereby optimizing the performance of the PUF. Moreover, the synergistic effect of nanomaterials and the fluid chaotic effect helps to enhance the robustness of the PUF system against external physical attacks. Description of the Drawings

[0020] Figure 1 It is a schematic flow chart of the PUF optimization method based on nanomaterials and the fluid chaotic effect in an embodiment;

[0021] Figure 2 It is a structural block diagram of the PUF optimization device based on nanomaterials and the fluid chaotic effect in an embodiment;

[0022] Figure 3 It is an internal structure diagram of a computer device in an embodiment. Detailed Description of the Invention

[0023] In order to make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] In one embodiment, as Figure 1 shown, a PUF optimization method based on nanomaterials and the fluid chaotic effect is provided, including the following steps:

[0025] Step 102, synthesize nanomaterials with regulated morphology, size, and surface characteristics, and disperse the nanomaterials into a solution.

[0026] In this step, the morphology, size, and surface properties of the nanomaterials can be regulated through chemical synthesis methods. The functionality of the nanomaterials is further enhanced using surface modification techniques to improve their performance in the PUF system. The synthesized nanomaterials are dispersed in an appropriate solution to provide a basis for the introduction of the fluid chaotic effect.

[0027] Step 104: Adjust the water / oil interface, temperature, and solution concentration to control the anisotropic encapsulation process of the liquid-nano-liquid interface.

[0028] In this process, nanoparticles are introduced at the interface to stimulate the nonlinear dynamic behavior of the fluid chaotic effect, thereby increasing the complexity and anti-interference ability of the system. Through the nonlinear behavior in the fluid chaotic effect, the generation process of the PUF is further optimized, enabling the system to maintain high stability under extreme environments.

[0029] Step 106: Based on the synergistic effect of the nanomaterials and the fluid chaotic effect, generate the physical fingerprint of the PUF, and optimize the randomness of the PUF by adjusting the distribution of the nanomaterials.

[0030] In the above PUF optimization method based on the nanomaterials and the fluid chaotic effect, different from selecting a certain type of parameter from the hardware system as the PUF in traditional technologies, this application uses the anisotropy of the nanomaterials at the water / oil interface by stimulating the nonlinear dynamic behavior of the fluid chaotic effect as the PUF, enabling the PUF to maintain stability under extreme environments such as high temperature, high humidity, and vibration. Secondly, due to the adjustable properties of the nanomaterials, the PUF can introduce more randomness during the generation process, thereby optimizing the performance of the PUF. Moreover, the synergistic effect of the nanomaterials and the fluid chaotic effect helps to enhance the robustness of the PUF system when subjected to external physical attacks.

[0031] In one embodiment, environmental factors are monitored in real time, and the parameters of the PUF are dynamically adjusted using a feedback mechanism.

[0032] Specifically, environmental factors such as temperature, humidity, and vibration are monitored in real time, and the parameters of the PUF system are dynamically adjusted using a feedback mechanism to ensure its stability under extreme environments. Through the regulation of the fluid chaotic effect and the nanomaterials, the robustness of the system in environmental changes is enhanced, avoiding performance fluctuations caused by environmental factors in existing PUF technologies.

[0033] Specifically, the environmental temperature, humidity, and vibration can be monitored in real time, and the fluid flow rate, viscosity, and density of the microfluidic chip are dynamically adjusted using a feedback mechanism to adjust the nanomaterial distribution and fluid chaotic effect of the PUF.

[0034] In one embodiment, the nanomaterials include: gold nanoparticles, magnetic nanoparticles, and fluorescent nanoparticles. Other nanomaterial particles can also be used and are not listed one by one here.

[0035] In one embodiment, through surfactant and functional group modification techniques, nanomaterials with regulated morphology, size, and surface properties are synthesized. Thus, highly uniform nanomaterials are synthesized to solve the problem of interfacial non-uniformity.

[0036] In one embodiment, by adjusting the water / oil interface, temperature, and solution concentration, the interfacial properties of the liquid and nanoparticles are changed to control the anisotropic encapsulation process of the liquid-nanoparticle-liquid interface.

[0037] In addition, by adjusting the water / oil interface, temperature, and solution concentration, and using a microfluidic chip to precisely control the fluid flow rate, viscosity, and density, the interfacial properties of the liquid and nanoparticles are changed.

[0038] In this embodiment, a microfluidic chip is introduced to study the influence of fluid chaotic effects on the self-assembly behavior of nanoparticles and to reveal how it increases the unpredictability and robustness of the PUF system.

[0039] In summary, the working principle of the synergistic effect of the nanomaterials and fluid chaotic effects in this application is as follows:

[0040] 1. Nanoparticle synthesis module: Different types of nanoparticles (such as gold nanoparticles, magnetic nanoparticles, etc.) are generated through chemical synthesis methods.

[0041] 2. Liquid-nanoparticle-liquid interface regulation module: By changing the interfacial properties of the liquid and nanoparticles, the anisotropic encapsulation of the interface is controlled, thereby enhancing the uniqueness and randomness of PUF generation.

[0042] 3. Fluid chaotic effect module: Through the non-linear characteristics of fluid chaotic behavior, the anti-interference ability of the PUF is enhanced, and its stability in extreme environments is improved.

[0043] It should be understood that although Figure 1 the steps in the flowchart of Figure 1 are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise clearly stated in this article, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover,

[0044] In one embodiment, as Figure 2As shown, a PUF optimization device based on nanomaterials and fluid chaotic effect is provided, including: a nanomaterial synthesis module 202, a fluid chaotic effect introduction module 204, and an optimization module 206, where:

[0045] The nanomaterial synthesis module 202 is used to synthesize nanomaterials with regulated morphology, size, and surface properties, and disperse the nanomaterials into a solution;

[0046] The fluid chaotic effect introduction module 204 is used to adjust the water / oil interface, temperature, and solution concentration, and control the anisotropic encapsulation process of the liquid-nano-liquid interface. Among them, nanoparticles are introduced on the interface to stimulate the non-linear dynamic behavior of the fluid chaotic effect;

[0047] The optimization module 206 is used to generate the physical fingerprint of the PUF based on the synergistic effect of nanomaterials and fluid chaotic effect, and optimize the randomness of the PUF by adjusting the distribution of nanomaterials.

[0048] In one embodiment, it further includes: a feedback module, which is used to monitor environmental factors in real time and dynamically adjust the parameters of the PUF using a feedback mechanism.

[0049] In one embodiment, the nanomaterials include: gold nanoparticles, magnetic nanoparticles, and fluorescent nanoparticles.

[0050] In one embodiment, the nanomaterial synthesis module 202 is further used to synthesize nanomaterials with regulated morphology, size, and surface properties through surfactant and functional group modification techniques.

[0051] In one embodiment, the fluid chaotic effect introduction module 204 is further used to change the interfacial properties of the liquid and nanoparticles by adjusting the water / oil interface, temperature, and solution concentration, and control the anisotropic encapsulation process of the liquid-nano-liquid interface.

[0052] In one embodiment, the fluid chaotic effect introduction module 204 is further used to precisely regulate the fluid flow rate, viscosity, and density by adjusting the water / oil interface, temperature, and solution concentration, and change the interfacial properties of the liquid and nanoparticles.

[0053] In one embodiment, the feedback module is further used to monitor the environmental temperature, humidity, and vibration in real time, and dynamically adjust the fluid flow rate, viscosity, and density of the microfluidic chip using a feedback mechanism to adjust the nanomaterial distribution and fluid chaotic effect of the PUF.

[0054] For the specific limitations of the PUF optimization device based on nanomaterials and fluid chaotic effect, reference can be made to the limitations of the PUF optimization method based on nanomaterials and fluid chaotic effect in the above text, which will not be elaborated here. Each module in the above PUF optimization device based on nanomaterials and fluid chaotic effect can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0055] In one embodiment, a computer device is provided. The computer device can be a terminal, and its internal structure diagram can be as Figure 3 shown. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, it implements a PUF optimization method based on nanomaterials and fluid chaotic effect. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer covered on the display screen, or a button, a trackball, or a touchpad set on the shell of the computer device, or an external keyboard, a touchpad, or a mouse, etc.

[0056] Those skilled in the art can understand that Figure 3 the structure shown in

[0057] is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0058] In one embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the steps of the method in the above embodiment.

[0059] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the various embodiments provided in the present application can include non-volatile and / or volatile memories. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM), etc.

[0060] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0061] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A PUF optimization method based on nanomaterials and fluid chaotic effect, characterized in that, The method includes: Synthesizing nanomaterials with regulated morphology, size, and surface properties, and dispersing the nanomaterials into a solution; Adjusting the water / oil interface, temperature, and solution concentration to control the anisotropic encapsulation process at the liquid-nano-liquid interface, wherein nanoparticles are introduced at the interface to stimulate the nonlinear dynamic behavior of the fluid chaotic effect; Based on the synergistic effect of the nanomaterials and the fluid chaotic effect, generating the physical fingerprint of the PUF, and optimizing the randomness of the PUF by adjusting the distribution of the nanomaterials.

2. The method according to claim 1, wherein The method further includes: Real-time monitoring of environmental factors and dynamically adjusting the parameters of the PUF using a feedback mechanism.

3. The method according to claim 1, wherein The nanomaterials include: gold nanoparticles, magnetic nanoparticles, and fluorescent nanoparticles.

4. The method according to claim 1, characterized in that Synthesizing nanomaterials with regulated morphology, size, and surface properties includes: Synthesizing nanomaterials with regulated morphology, size, and surface properties through surfactant and functional group modification techniques.

5. The method according to claim 2, wherein Adjusting the water / oil interface, temperature, and solution concentration to control the anisotropic encapsulation process at the liquid-nano-liquid interface includes: Changing the interfacial properties of the liquid and nanoparticles by adjusting the water / oil interface, temperature, and solution concentration to control the anisotropic encapsulation process at the liquid-nano-liquid interface.

6. The method according to claim 5, wherein Changing the interfacial properties of the liquid and nanoparticles by adjusting the water / oil interface, temperature, and solution concentration includes: Changing the interfacial properties of the liquid and nanoparticles by precisely regulating the fluid flow rate, viscosity, and density using a microfluidic chip by adjusting the water / oil interface, temperature, and solution concentration.

7. The method according to claim 6, wherein Real-time monitoring of environmental factors and dynamically adjusting the parameters of the PUF using a feedback mechanism includes: Real-time monitoring of environmental temperature, humidity, and vibration, and dynamically adjusting the fluid flow rate, viscosity, and density of the microfluidic chip using a feedback mechanism to adjust the nanomaterial distribution and fluid chaotic effect of the PUF.

8. A PUF optimization device based on nanomaterials and fluid chaotic effect, characterized in that, The device includes: A nanomaterial synthesis module for synthesizing nanomaterials with regulated morphology, size, and surface properties and dispersing the nanomaterials into a solution; A fluid chaotic effect introduction module for adjusting the water / oil interface, temperature, and solution concentration to control the anisotropic encapsulation process at the liquid-nano-liquid interface, wherein nanoparticles are introduced at the interface to stimulate the nonlinear dynamic behavior of the fluid chaotic effect; An optimization module for generating the physical fingerprint of the PUF based on the synergistic effect of the nanomaterials and the fluid chaotic effect, and optimizing the randomness of the PUF by adjusting the distribution of the nanomaterials.

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