In order to improve the encryption effect of video encryption technology,based on the original advanced encryption standard(AES)encryption algorithm,the analysis and experiment are implemented through three parts of encryption element selec-tion,motion vector encryption scheme design,DCT change coefficient encryption scheme design.After the subsequent simulation ver-ification,the key sensitivity has a great improvement;The RGB histogram of the improved AES algorithm shows that its encryption effect and decryption and restoration effect are good video quality.Through the comparative analysis,the improved AES algorithm has the smallest SSIM and lower PSNR value,that is,the encryption effect is relatively better.After the calculation,the results show that the percentage of encoding time increases by 0.23％,and the percentage of decoding time by 8.56％.The parameters such as NPCR,UACI and correlation coefficient of video frame pixel pairs before and after encryption are tested,respectively,and the im-proved video encryption method has the best security performance compared with previous encryption methods.From the above analy-sis,the improved video encryption has the best effect.
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维普
