基于幻方变换的HEVC熵编码加密方案

doi:10.11959/j.issn.1000-0801.2018015

Abstract

Abstract:

In view of the multimedia information security,based on the entropy module on high efficiency video coding (HEVC/H.265),combined with the magic square,a real time and high efficiency encryption technique for high-definition video streaming was proposed.The algorithm which had an effective use of transform coefficient sparsity enabled coefficient group (CG) of transform block (TB) scrambling,and used a selective encryption on syntax elements in CG's entropy.The experiments prove that the investigated scheme has high security,which can guarantee the standard compliance and the demand of video encryption while having a low impact on encoding-rate performance.

Key words: high efficiency video coding, magic square matrix, entropy coding, transform coefficient

CLC Number:

TP391

Bowen XU,Xiaodong WANG,Lei GUO,Jian WANG. A video encryption in HEVC entropy coding based on magic square[J]. Telecommunications Science, 2018, 34(3): 95-104.

Figures/Tables 14

References 15

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序列	帧数	帧率(f·s^-1)	分辨率
Traffic	60	30	2 560 dpi×1 600 dpi
Kimono	60	24	1 920 dpi×1 080 dpi
Johnny	60	60	1 280 dpi×720 dpi
ChinaSpeed	60	30	1 024 dpi×768 dpi
BaksetballDrill	60	50	832 dpi×480 dpi
BasketballPass	60	50	416 dpi×240 dpi
BlowingBubbles	60	50	416 dpi×240 dpi

序列	QP22/dB		QP27/dB		QP32/dB		QP37/dB
序列	未加密	加密	未加密	加密	未加密	加密	未加密	加密
Traffic	43.35	9.96	40.16	8.03	37.12	9.08	34.10	7.55
Kimono	43.01	8.35	41.66	9.30	39.82	7.02	37.40	6.33
Johnny	44.04	10.70	41.88	10.38	39.59	10.97	37.00	10.20
ChinaSpeed	45.18	6.11	41.31	5.20	37.52	3.77	33.82	3.71
BaksetballDrill	41.77	12.15	38.41	7.60	35.46	9.28	32.83	9.60
BasketballPass	42.86	9.54	39.34	11.82	35.91	9.58	32.78	10.47
BlowingBubbles	42.71	10.41	37.55	10.45	33.52	9.23	29.33	6.81
平均	43.28	9.60	40.04	8.97	36.99	8.42	33.89	7.81

序列	QP22	QP27	QP32	QP37	平均
Traffic	+0.76%	+1.14%	+1.43%	+1.69%	+1.25%
Kimono	+1.89%	+2.36%	+2.42%	+2.52%	+2.30%
Johnny	+0.92%	+0.90%	+1.10%	+1.24%	+1.04%
ChinaSpeed	+3.46%	+2.74%	+1.82%	+0.44%	+2.11%
BaksetballDrill	+0.83%	+1.04%	+1.02%	+1.01%	+0.97%
BasketballPass	+0.37%	+0.65%	+0.87%	+1.11%	+0.75%
BlowingBubbles	+0.09%	+2.65%	+1.32%	+0.99%	+1.26%

方案	加密元素	加密方式	ΔPSNR/dB	ΔSSIM	兼容性
参考文献[11]方案	HEVC标准头信息	混沌密钥	--	-	否
参考文献[12]方案	mvd_sign+residual sign	AES	-22.1	-0.680%	是
参考文献[13]方案	帧内预测模式和运动残差以及量化变换符号	AES	-30.05	-0.610%	是
参考文献[14]方案	coeff_remain的TR后缀码和k阶指数哥伦布的后缀码	混沌序列	-19.785	0.285%	是
本文方案	coeff_flag+coeff_remain	幻方置乱	-29.85	-0.701%	是

A video encryption in HEVC entropy coding based on magic square

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