Aiming at the inefficiency in the process of full encryption of video data and the problem of data leakage caused by encrypting only part of the frame,the state secret algorithm SM4 is used to encrypt the I frame,P frame and B frame in H.264 format frame by frame,and the SM4 algorithm is accelerated by NEON technology.Frame by frame encryption has achieved good results in preventing video data leakage.After using NEON,the SM4 encryption time is reduced by about 40% compared that without NEON.
Key words
data breach /
frame-by-frame encryption /
video encryption /
NEON /
SM4
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