| 基于CCSDS IDC的联合信源与安全编译码 |
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| 作者姓名： | 李林森 张灿 陈德元 |
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| 作者单位： | 1. 中国科学院研究生院信息科学与工程学院, 北京 100049;2. 中国科学院研究生院信息安全国家重点实验室, 北京 100049 |
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| 基金项目： | 国家自然科学基金(61032006, 60972067)和国家科技重大专项(2010ZX03002-008)资助 |
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| 摘 要： | CCSDS图像数据压缩(IDC)标准和分组密码算法SMS4通过将数据压缩与安全分别最优化,使编译码总体性能达到最佳.该算法计算复杂度高,难以保障图像数据在资源受限网络中有效和安全传输.本文使用SMS4分组密钥对图像直流系数进行随机算术编码;对交流系数采用序列加密编码,提出一种基于CCSDS IDC的联合信源与安全编译码算法.仿真实验表明,该算法降低了计算复杂度,同时提供了良好的安全性能.
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| 关 键 词： | CCSDS IDC 随机算术编码 联合信源与安全编译码 SMS4算法 |
| 收稿时间： | 2011-04-27 |
| 修稿时间： | 2011-05-09 |
Joint source encryption coding based on CCSDS image data compression standard |
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| Authors: | LI Lin-Sen ZHANG Can CHEN De-Yuan |
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| Institution: | 1. School of Information Science and Engineering, Graduate University, Chinese Academy of Sciences, Beijing 100049, China;2. State Key Laboratory of Information Security, Graduate University, Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | The CCSDS IDC standard and SMS4 algorithm are separately designed for achieving the best performance of the overall system. However, they can not guarantee the transmission of the image data in the resources-limited network. We propose a joint source encryption algorithm based on CCSDS IDC standard. Randomized arithmetic coding is performed for the DC coefficients by using SMS4 sub-keys, and stream cipher for the AC coefficients. The simulation results show that this method has lower computational complexity and better security performance. |
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| Keywords: | CCSDS IDC randomized arithmetic coding joint source encryption coding SMS4 |
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