Optical PUF system based on chaotic signals

Abstract

The invention relates to the field of semiconductor optoelectronics, in particular to an optical PUF (physical unclonable function) system based on chaotic signals, which is applied to the fields of safety verification, key generation and the like. By using the initial value sensitivity and the high bandwidth characteristic of the chaotic signal, the problems of low safety and small information amount of the current optical physical unclonable function system are solved. A silicon waveguide structure is adopted, integration with other semiconductor functional devices is facilitated, and therefore a safety verification system with a compact structure and a random number generator are expected to be achieved.

Description

technical field [0001] The invention relates to the field of semiconductor optoelectronics, in particular to an optical PUF system based on chaotic signals. Background technique [0002] With the rise of Internet of Things technology, the application prospect of Physical Unclonable Function (PUF) is becoming increasingly prominent. PUF has uniqueness, unclonability, unpredictability and robustness. These characteristics make PUF widely used in true random number generation, high-speed encryption Key generation and identity authentication and other fields. [0003] At present, there are two main implementation methods of PUF, that is, the electrical and physical unclonable function proposed by using the randomness of the integrated circuit manufacturing process error and the optical implementation method proposed by using the complexity of optical diffraction. Compared with electrical PUF, optical PUF is more secure, and the faster transmission speed of photons makes it more...

AI Technical Summary

Problems solved by technology

Although this structure has higher security and complexity than electronic PUF, the amount of information is still relatively small, only 0.022Tbit / mm3

Images