Research And Application Of Physical Unconable Function

Recent years, with the continuous development of hardware technology and wide application of fingerprint recognition, the concept of physical unclonable function (PUF) is proposed, and it is becoming a hot technology in the field of hardware security by virtue of its good property such as physical unclonable, lightweight and tamper resisitant. The thesis deeply studies the application and implementation of physical unclonable function based on the basic rules of physical unclonable function and network security technology, and then proposes a universal PUF structure, and designs two security protocols based on the proposed PUF structure to solve the problems of those protocols vulnerable to physical clonable attack. Finally the thesis designs and implements a physical unclonable function circuit based on full study of proposed PUF types. The works that have been finished are as follows:(1)The thesis gives a survey of physical unclonable function. To establish an overview description of physical unclonable function, the thesis first introduces the various implementation methods, properties and basic applications of the physical unclonable function, and highlights the optical PUF, the coating PUF, the arbiter PUF and the SRAM PUF implement methods, and highlights several basic applications such as system authentication, random oracle, computable functions and key generator.(2)Former universal PUF structure does not have a general property and does not consider the noise influence. To solve those problems for realizing the deeply use of physical unclonable function, this part proposes a universal PUF structure i.e. the concept of physical unclonable function system. On the basis of that, a detailed definition of the physical unclonable function of three essential properties i.e. properties of robustness, unclonable and unpredictable is given throughout the SRAM PUF instance.(3)To make the security protocol have the properties of physical unclonable, lightweight and universal composable, this part proposes two universal composable security protocols which are oblivious transfer protocol and authenticated key exchange protocol based on former proposed universal PUF structure. The new security protocols with the following functions and features:(a) PUF-based security protocols can resist physical clone attacks.,(b) Security protocols do not use any computable assumptions, but the security properties based on PUFS. Compared to traditional public key encryption scheme, these protocols greatly reduce the cost of computing, storage and communication.(c) Security protocols have the universally composable features. (4)To assess the properties of physical unclonable function, this part gives the detailed design and implementation of a physical unclonable function circuit based on the FPGA. The test results show that PUF circuit designed is fully equipped with the signature uniqueness within programming Xilinx ISE on Spartan3FPGA.