| Chaos-Based Encryption Algorithm for Compressed Video |
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| 作者姓名： | 袁春 钟玉琢 贺玉文 |
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| 作者单位： | DepartmentofComputerScienceandTechnology,TsinghuaUniversity,Beijing100084,China |
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| 基金项目： | Supported by the National Key Research TechnologyProject of Ministry of Information Industry of China(No. 19991118) |
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| 摘 要： | Encryption for compressed video streams has attracted increasing attention with the exponential growth of digital multimedia delivery and consumption. However, most algorithms proposed in the literature do not effectively address the peculiarities of security and performance requirements. This paper presents a chaos-based encryption algorithm called the chaotic selective encryption of compressed video (CSECV) which exploits the characteristics of the compressed video. The encryption has three separate layers that can be selected according to the security needs of the application and the processing capability of the client computer.The chaotic pseudo-random sequence generator used to generate the key-sequence to randomize the important fields in the compressed video stream has its parameters encrypted by an asymmetric cipher and placed into the stream. The resulting stream is still a valid video stream. CSECV has significant advantages over existing algorithms for security, decryption speed, implementation flexibility, and error preservation.
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| 关 键 词： | 密码学 加密算法 混沌理论 多媒体传输 压缩视频 |
Chaos-Based Encryption Algorithm for Compressed Video |
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| YUAN Chun,ZHONG Yuzhuo,HE Yuwen.Chaos-Based Encryption Algorithm for Compressed Video[J].Tsinghua Science and Technology,2003,8(5):605-611. |
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| Authors: | YUAN Chun ZHONG Yuzhuo HE Yuwen |
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| Affiliation: | YUAN Chun,ZHONG Yuzhuo,HE YuwenDepartment of Computer Science and Technology,Tsinghua University,Beijing 100084,China |
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| Abstract: | Encryption for compressed video streams has attracted increasing attention with the exponential growth of digital multimedia delivery and consumption. However, most algorithms proposed in the literature do not effectively address the peculiarities of security and performance requirements. This paper presents a chaos-based encryption algorithm called the chaotic selective encryption of compressed video (CSECV) which exploits the characteristics of the compressed video. The encryption has three separate layers that can be selected according to the security needs of the application and the processing capability of the client computer. The chaotic pseudo-random sequence generator used to generate the key-sequence to randomize the important fields in the compressed video stream has its parameters encrypted by an asymmetric cipher and placed into the stream. The resulting stream is still a valid video stream. CSECV has significant advantages over existing algorithms for security, decryption speed, implementation flexibility, and error preservation. |
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| Keywords: | chaos chaotic encryption selective encryption error-preserving encryption security compressed video |
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