| 结合DNA编码和混沌的图像选择区域加密 |
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| 引用本文： | 彭珊,龙敏.结合DNA编码和混沌的图像选择区域加密[J].应用科学学报,2015,33(6):655-662. |
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| 作者姓名： | 彭珊 龙敏 |
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| 作者单位： | 长沙理工大学计算机与通信工程学院, 长沙 410014 |
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| 基金项目： | 湖南省自然科学基金(No.15JJ2007)资助 |
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| 摘 要： | 提出一种可供用户自定义选择区域的图像加密方案.用户可通过鼠标选择或直接输入坐标数值的方法定义需加密区域,采用混沌系统产生密钥流,根据DNA编码思想依次对图像数据流进行随机置换加密.密文图像在传输之前使用可逆数字水印隐藏用户选择的图像区域信息,接收方收到密文图像后可直接提取该水印信息确定解密区域进行解密,而无需额外传输.测试和分析表明,该方案在满足安全性同时具有较好的灵活性和实用性.
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| 关 键 词： | DNA编码 图像加密 用户自定义区域 可逆水印 混沌序列 |
| 收稿时间： | 2015-06-23 |
| 修稿时间： | 2015-07-17 |
Region-Selected Image Encryption with Combination of DNA Coding and Chaos |
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| PENG Shan,LONG Min.Region-Selected Image Encryption with Combination of DNA Coding and Chaos[J].Journal of Applied Sciences,2015,33(6):655-662. |
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| Authors: | PENG Shan LONG Min |
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| Institution: | School of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha 410014, China |
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| Abstract: | A scheme for encrypting user-defined image region is proposed. The region may be chosen interactively by the user using a mouse or directly entering position parameters. Key streams are generated from a chaotic system. The image is randomly substituted based on DNA encoding. Information about the user-defined region is embedded into the encrypted image with reversible watermarking before transmission. The receiver can directly extract the region information without relying on any additional transmission. Tests and analysis show that the scheme can meet security requirements with good flexibility and practicability. |
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| Keywords: | DNA encoding image encryption user-defined region reversible watermarking chaotic sequence |
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