entropy codec based on evolutionary mht and its application in video     encryption

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	entropy codec based on evolutionary mht and its application in video encryption
	Cao Yun; Zhao Xianfeng; Feng Dengguo
	2009
会议名称	11th ACM Multimedia and Security Workshop
会议录名称	MMandSec09 - Proceedings of the 11th ACM Multimedia Security Workshop
会议日期	SEP 07-08,
会议地点	Princeton, NJ
出版地	1515 BROADWAY, NEW YORK, NY 10036-9998 USA
出版者	MM&SEC09: PROCEEDINGS OF THE 2009 ACM SIGMM MULTIMEDIA AND SECURITY WORKSHOP
ISBN	978-1-60558-492-8
部门归属	Cao, Yun; Zhao, Xianfeng; Feng, Dengguo Chinese Acad Sci, Inst Software, State Key Lab Informat Secur, Beijing, Peoples R China.
摘要	Intending to achieve both efficiency and security, researchers have proposed various approaches which integrate encryption with multimedia compression, systems. Among these, we have found that, by turning entropy coder into cryptographic cipher, the MHT (multiple Huffman tables) scheme has many desirable advantages as fewer crypto-operations are needed. However, because multiple Huffman tables are kept secret, the key management of MHT turns out to be impractical. In this paper, a novel multimedia encryption scheme called evolutionary MHT (EMHT) is proposed to make an improvement. Using only the seed of a pseudorandom bit generator (PRBG) as the key, minimum data is transmitted in key negotiation, and the storage memory is minimized. Analysis shows that EMHT can withstand the known/chosen plaintext attacks capable of breaking MHT. Moreover, the compression ratio and the data format-compliance are unaffected with a minor computational and implementation overhead.
关键词	Multimedia Encryption Entropy Codec Huffman Coding
主办者	ACM SIGMM
内容类型	会议论文
URI标识	http://ir.iscas.ac.cn/handle/311060/8324
专题	信息安全国家重点实验室
推荐引用方式 GB/T 7714	Cao Yun,Zhao Xianfeng,Feng Dengguo. entropy codec based on evolutionary mht and its application in video encryption[C]. 1515 BROADWAY, NEW YORK, NY 10036-9998 USA:MM&SEC09: PROCEEDINGS OF THE 2009 ACM SIGMM MULTIMEDIA AND SECURITY WORKSHOP,2009.