Ms. Bing Li Profile

Bing Li

at Tianjin Univ

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Proceedings Article | 10 September 2007 Paper

A secure transmission scheme of streaming media based on the encrypted control message

Bing Li, Zhigang Jin, Yantai Shu, Li Yu

Proceedings Volume 6777, 677708 (2007) https://doi.org/10.1117/12.730695

KEYWORDS: Video, Computer security, Video compression, Cryptography, Lithium, Video processing, Network security, Multimedia, Algorithm development, Reconstruction algorithms

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As the use of streaming media applications increased dramatically in recent years, streaming media security becomes an important presumption, protecting the privacy. This paper proposes a new encryption scheme in view of characteristics of streaming media and the disadvantage of the living method: encrypt the control message in the streaming media with the high security lever and permute and confuse the data which is non control message according to the corresponding control message. Here the so-called control message refers to the key data of the streaming media, including the streaming media header and the header of the video frame, and the seed key. We encrypt the control message using the public key encryption algorithm which can provide high security lever, such as RSA. At the same time we make use of the seed key to generate key stream, from which the permutation list P responding to GOP (group of picture) is derived. The plain text of the non-control message XORs the key stream and gets the middle cipher text. And then obtained one is permutated according to P. In contrast the decryption process is the inverse process of the above. We have set up a testbed for the above scheme and found our scheme is six to eight times faster than the conventional method. It can be applied not only between PCs but also between handheld devices.

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