| 结合EZW和AES的图像加密机制 |
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| 作者姓名： | 侯启槟 王阳生 黄向生 周晓旭 |
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| 作者单位： | 中国科学院自动化研究所, 北京 100080 |
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| 摘 要： | 随着图像或视频的网络应用日益普及,各种各样的新型应用不断涌现。由于图像或视频在网络中传输时,网络本身的安全措施并不能完全阻止非法截取事件的发生,因此人们对于图像数据传输的有效性和安全性提出新的要求。提出一种新的方法,其基本思想是通过结合使用离散小波变换(DWT)、嵌入式零树小波编码(EZW)和高级加密标准(AES),在对需要传输的图像充分压缩的基础上,对编码码流加密置乱,从而同时达到有效和安全传输的目的。实验结果表明,该方法在保持较高压缩效率的同时,增强了码流在传输过程中的安全性。
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| 关 键 词： | 图像加密 图像压缩 离散小波变换 嵌入式零树编码 高级加密标准 |
| 收稿时间： | 2003-01-22 |
| 修稿时间： | 2003-04-17 |
Image Encryption Combining EZW and AES |
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| Authors: | Hou Qi-bin Wang Yang-sheng Huang Xiang-sheng Zhou Xiao-xu |
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| Institution: | Institute of Automation, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | With wide spread of image and video in internet, various kinds of novel implementations have ap-peared in recent years .In some of these implement ations,private-inform at ion-contain images are employed usually .Due to vulnerability to illegal accessing during transmission of image and video,requirement of secu-rity is impending .A new algorithm is addressed and the essence of this method is that by combination of Dis-crete Wavelet Transform(DWT), Embedded Zerotree Wavelet Algorithm(EZW),and Advanced Encry p-tion Standard(AES), encrypt compressed stream to ensure the transmission efficiency and security .The ex-periments demonstrate that our new algorithm can improve the security of media stream besides keeping hig hcompression rate. |
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| Keywords: | image encryption image compression DWT EZW AES |
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