A Strong/Weak Hybrid PUF Circuit Against Model Attack
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A hybrid, model technology, applied in the protection of internal/peripheral computer components, etc., can solve the problems of low randomness of data, inability to continuously generate excitation signals, and low number of responses.
Active Publication Date: 2018-12-25
NINGBO UNIV
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Although this scheme increases the number of excitation corresponding pairs by combining the arbiter PUF and the ring oscillator, there are still problems that the excitation signal cannot be continuously generated, the number of excitation signals is insufficient, the number of generated responses is low, and the uniqueness is poor.
The above-mentioned physical unclonable function circuits all have low randomness of the generated data, which cannot defend against model attacks and low security.
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Embodiment 1
[0028] Embodiment one: if figure 1 , figure 2 , image 3 and Figure 4As shown, a strong / weak hybrid PUF circuit against model attacks includes a control circuit and 128 PUF unit circuits with the same structure. The control circuit has a clock signal input terminal, a word line control signal input terminal, and an enable signal input terminal. , control signal input terminal, data input terminal, clear signal input terminal, number setting signal input terminal, clock signal output terminal, word line control signal output terminal, enable signal output terminal, data output terminal, clear signal output terminal and Set the number signal output terminal, the PUF unit circuit has a clock terminal, a control terminal, an enable terminal, an input terminal, a zero clearing terminal, a number setting terminal and an output terminal; the clock signal output terminal of the control circuit is connected to the clock of 128 PUF unit circuits respectively. The word line control ...
Embodiment 2
[0029] Embodiment 2: This embodiment is basically the same as Embodiment 1, the difference is:
[0030] Such as Figure 5As shown, in this embodiment, the linear feedback shift register includes a first data selector MUX1, a second data selector MUX2, a third data selector MUX3, a fourth data selector MUX4, a fifth data selector MUX5, a Six data selector MUX6, first two-input XOR gate C1, first D flip-flop DFF1, second D flip-flop DFF2, third D flip-flop DFF3, fourth D flip-flop DFF4, fifth D flip-flop DFF5, Sixth D flip-flop DFF6, seventh D flip-flop DFF7, eighth D flip-flop DFF8, ninth D flip-flop DFF9, tenth D flip-flop DFF10, eleventh D flip-flop DFF11, twelfth D flip-flop DFF12 , the thirteenth D flip-flop DFF13, the fourteenth D flip-flop DFF14, the fifteenth D flip-flop DFF15 and the sixteenth D flip-flop DFF16, the first data selector MUX1, the second data selector MUX2, the third data The selector MUX3 and the fourth data selector MUX4 are four-input data selectors,...
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Abstract
The invention discloses a strong / weak hybrid PUF circuit for resisting model attack, comprising a control circuit and N PUF unit circuits with the same structure, wherein a PUF cell circuit includes astorage type random source, a linear feedback shift register, a serial-parallel module and an arbiter PUF, the clock side of the linear feedback shift register and the clock side of the serial-parallel block are connected to the clock signal, the input of the arbiter PUF is connected to an input signal, the output of the arbiter PUF is used to output the PUF output response, the 8-bit parallel output of the storage random source is connected to the 8-bit parallel input of the linear feedback shift register, the serial output terminal of the linear feedback shift register is connected with theserial input terminal of the serial-parallel module, the 16-bit parallel output terminal of the serial-parallel module is connected with the 16-bit parallel control terminal of the arbiter PUF, and the memory random source comprises eight memory cells with the same structure; the serial output terminal of the linear feedback shift register is connected with the serial input terminal of the serial-parallel module. The advantages are good randomness, uniqueness and security.
Description
technical field [0001] The invention relates to a PUF circuit, in particular to a strong / weak hybrid PUF circuit against model attack. Background technique [0002] With the advent of the digital information age, smart home, smart interconnection and digital dependence have become ubiquitous in daily life. Smart devices have become the carrier of smart applications, and the application of smart devices is becoming more and more common. These smart devices store a lot of personal private information, and the security vulnerabilities of smart devices cause personal and social risks. The security vulnerability of smart devices is mainly due to the low security of the hardware authentication key between smart devices, which is easy to be attacked by collecting a large number of keys and performing mathematical modeling. Therefore, the randomness and security of the key become the key elements of hardware authentication between smart devices. Physically unclonable functional ci...
Claims
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