| 隐写术中矩阵编码的保密安全性 |
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| 引用本文： | 陈嘉勇,刘九芬,祝跃飞,张卫明. 隐写术中矩阵编码的保密安全性[J]. 通信学报, 2012, 33(6): 174-179 |
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| 作者姓名： | 陈嘉勇 刘九芬 祝跃飞 张卫明 |
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| 作者单位： | 解放军信息工程大学信息工程学院,河南郑州,450002 |
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| 基金项目： | 国家自然科学基金资助项目，国家高技术研究发展计划(“863”计划)基金资助项目，郑州市科技创新团队基金资助项目 |
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| 摘 要： | 针对矩阵编码在隐写码和湿纸码中的应用,基于信息论模型研究矩阵编码在不同攻击条件下的保密安全性。在已知载体攻击条件下,给出矩阵编码的密钥疑义度、消息疑义度和密钥的唯一解距。在选择载密攻击条件下,指出只需n个差分方程组即可恢复矩阵编码的共享密钥。
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| 关 键 词： | 信息隐藏 隐写术 隐写分析 矩阵编码 矩阵嵌入 湿纸码 |
Cryptographic secrecy of steganographic matrix encoding |
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| CHEN Jia-yong , LIU Jiu-fen , ZHU Yue-fei , ZHANG Wei-ming. Cryptographic secrecy of steganographic matrix encoding[J]. Journal on Communications, 2012, 33(6): 174-179 |
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| Authors: | CHEN Jia-yong LIU Jiu-fen ZHU Yue-fei ZHANG Wei-ming |
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| Affiliation: | (Information Science and Technology Institute,PLA Information Science and Technology University,Zhengzhou 450002,China) |
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| Abstract: | Based on an information theory model,the cryptographic security of matrix encoding,which can be applied in steganographic codes or wet paper codes,under different attack conditions was studied.The cryptographic security about matrix encoding under the condition of known-cover attack with key equivocation,message equivocation and unicity distance of stego-key was presented.The result that n groups of differential equations could sufficiently recover the share key of matrix encoding under the condition of chosen-stego attack was pointed out. |
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| Keywords: | information hiding steganography steganalysis matrix encoding matrix embedding wet paper codes |
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