Video Privacy Protection Based On Encrypted Image Retrieval

With the development of science and technology,our lives are becoming more and more intelligent.In the Internet era,we enjoy the convenience,but it also brings the threat of privacy disclosure,even when it is time to take measures to protect the security of personal information.With the increasing popularity of video surveillance system,the personal privacy protection is paid more and more attention.As the information carrier closest to human senses,video information has become an important means for us to obtain various information.However,with the rapid development of Internet,the security problem of video information is increasingly prominent,and the protection of cloud is becoming more and more important The security of video and the optimization of the storage resource occupation of cloud video are very urgent and important work.This paper proposes an effective method for the privacy protection of cloud surveillance video,which can realize the encrypted storage and retrieval of video data without disclosing any privacy of video.When encrypting and storing the video,the video key frame is extracted,and the scale invariant feature transformation and its index plaintext F block are obtained.Under the effect of public key K,the F block is encrypted by AES encryption algorithm to get E block,and the ciphertext e block and scale invariant feature transformation are stored in the cloud.When sift matching is used to find the data of massive video files,under the function of public key K,Block E is restored by AES decryption algorithm to get block F key index plaintext,then find out the similarity between the retrieval information and the key frames in massive video files,and return the location in the video.The experimental results show that it is advisable to store video key frame encrypted information in the cloud.On the one hand,it can reduce the storage resources in the cloud and save a lot of costs.On the other hand,it can improve thesecurity of video information storage and retrieval.AES encrypting block F gets block E,and encrypting Block E is stored in the cloud,which improves the security of information and effectively prevents privacy leakage.Thirdly,video retrieval based on pictures With high efficiency,through the key frame encryption information matching of the video file to achieve the video retrieval function,improve the efficiency of the search.