Key generation method based on infrared focal plane detector blind pixel distribution

Abstract

The invention relates to a key generation method based on infrared focal plane detector blind pixel distribution. After an infrared focal plane array is connected with a readout circuit, the readout circuit collects corresponding data and converts the data to electric signals through uniformly irradiating the receiving surface of the detector on the infrared focal plane array with a temperature object under two different temperatures, blind pixels on the infrared focal plane array are determined through searching for dead and superheated pixels, and a key is formed. The distribution of the blind pixels in the infrared focal plane detector is used as a unique and non-replicable true random number key, on the basis, infrared image encryption can be realized by combining common cryptography,and the method does not need an additional true random number generating device and can achieve better encryption effects with little hardware cost.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a key generation method based on blind element distribution of an infrared focal plane detector. Background technique [0002] With the development of communication technology and infrared thermal imaging technology, images are frequently transmitted between different devices, and image security has become a focus of attention, such as in infrared thermal image monitoring systems and infrared thermal image detection systems. In order to ensure the security of the infrared image content, it is necessary to use computer encryption technology to encrypt the image. Different from the traditional text encryption method, for digital images, it is necessary to convert the encrypted image into one-dimensional binary data, and then perform data encryption processing as a binary stream. However, due to the two-dimensional distribution of digital images, high redundancy between adjacent ...

AI Technical Summary

Problems solved by technology

However, due to the two-dimensional distribution of digital images, high redundancy between adjacent pixels, and large data volume, in order to meet the security requirements after encryption, the algorithm is very complicated and requires a lot of time and hardware resources. The efficiency is low, and the random number seed used for encryption is usually generated in a pseudo-random way, which does not have the unpredictability required by the true random number key, and is easy to be attacked or cracked, and the security is not enough

Moreover, the existing key system is usually an independent system, which has nothing to do with the chip or the device itself, and is easy to be cloned

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