1results about How to "Increase entropy" patented technology

This application discloses a self-excited random number generation system and method based on a nanophotonic PUF, belonging to the field of hardware anti-counterfeiting technology. The system includes a light source, a filtering unit, an image generation unit, and an image processing unit. The light source outputs an incident beam. The filtering unit performs spatial filtering and collimation amplification on the incident beam, and filters out high-frequency noise and stray light in the incident beam, outputting a uniform beam. The image generation unit includes a spatial light modulator and a nanophotonic PUF. The spatial light modulator is used to receive the uniform beam output by the filtering unit and modulate the uniform beam according to the modulation source data. The nanophotonic PUF generates a speckle image after being excited by the uniform beam. The image processing unit processes the speckle image and generates modulation source data, and simultaneously sends the modulation source data to the image generation unit to modulate the uniform beam to form a self-excited loop. The image processing unit is also used to process the speckle image to form a binary random matrix, and serialize the random matrix into a one-dimensional random bit sequence as a random number. This application not only features high random number entropy, strong unpredictability, and excellent anti-attack capability, but also has the advantages of good system compatibility and independence from external data dependence, making it widely applicable in scenarios such as high-security key generation and encrypted communication.