Abstract
Nowadays surveillance systems have been widely deployed in various places and generate massive amount of video data every day. This raises threats of unauthorized access and potential privacy leakage as the recorded videos usually contain rich identifiable information such as facial biometrics. In order to mitigate the threats, many existing methods perform symmetric encryption on the entire frames in the videos. Unfortunately, these methods could introduce additional computation cost and storage. Moreover, as surveillance systems could be a part of distributed system, the key management is critical and challenging. In this paper, we propose a novel method which incorporates background subtraction technique and RSA encryption algorithm. Rather than encrypting the entire frames of the videos, the proposed detect the regions around moving objects in the frames of video and then perform RSA encryption on the detected regions. And RSA encryption technique has its advantages of key distribution and management. Our experimental results show that the proposed method only involve moderate computation cost and storage.
Highlights
The appearance of computer vision allows us to acquire a video from camera vision and to process them
We propose a novel method which incorporates background subtraction technique and RSA encryption algorithm
This raises threats of unauthorized access and potential privacy leakage as rich identifiable information is usually contained in the recorded videos
Summary
The appearance of computer vision allows us to acquire a video from camera vision and to process them. Surveillance systems are widely deployed in many places and generate massive amount of video data every day This raises threats of unauthorized access and potential privacy leakage as rich identifiable information is usually contained in the recorded videos. We propose a new combination method to encrypt the region of around moving objects in video and to prevent unauthorized access to the data application on RGB standard. The identified moving objects are encrypted and encoded by asymmetric encryption algorithms which have advantages of secure and convenient key distribution and key management. Among the asymmetric encryption algorithms, RSA is typical and popular asymmetric encryption It uses a pair of public key, and a private key to encrypt and decrypt messages when communicating. Any messages that are encrypted by using the public key can only be decrypted by applying the same algorithm, but by using the matching private key. Our experimental results show that the proposed method achieves reasonable performance in encrypting and decrypting video of surveillance at moderate computational costs
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