| 数字图像保密系统的嵌入式设计与FPGA验证 |
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| 引用本文： | 任帅,杨先文.数字图像保密系统的嵌入式设计与FPGA验证[J].北京联合大学学报(自然科学版),2011(1):4-8. |
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| 作者姓名： | 任帅 杨先文 |
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| 作者单位： | 信息工程大学电子技术学院; |
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| 摘 要： | 为避免纯软件方式实现数字图像保密系统安全性弱的缺陷,介绍了一种基于嵌入式设备的软硬件协同设计方案。首先设计并分析了一个基于Logistic映射和Lorenz系统的图像加密算法,然后给出了一种基于ARM 7主控制器和USB设备接口的嵌入式设计方案,最后给出了该设计的具体实现,并对实现进行了FPGA验证。实验结果表明,该设计的加解密数据处理速度在USB1.1全速模式下可达8.5 Mbps,并且保持较高的密钥敏感性,以及较平均的像素值分布,提供的嵌入式设计方案满足数字图像保密系统的应用需求,对其他保密系统的安全性设计也具有一定的参考价值。
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| 关 键 词： | 混沌 图像加密 软硬件协同 FPGA |
Embedded Design and FPGA Validation of Digital Image Encryption System |
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| REN Shuai,YANG Xian-wen.Embedded Design and FPGA Validation of Digital Image Encryption System[J].Journal of Beijing Union University,2011(1):4-8. |
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| Authors: | REN Shuai YANG Xian-wen |
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| Institution: | REN Shuai,YANG Xian-wen(Institute of Electronic Technology,Information Engineering University,Zhengzhou 450004,China) |
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| Abstract: | To avoid the security vulnerabilities of digital image encryption algorithms implemented by means of pure software,a software and hardware co-design scheme based on an embedded device is introduced.Firstly,a symmetric image encryption algorithm adopting the Logistic map and the Lorenz system is designed and analyzed.Then,an embedded design scheme of the image encryption algorithm based on ARM 7 processor and USB device interface is proposed.Finally,the concrete implementation is given,and it is validated on... |
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| Keywords: | chaotic image encryption software and hardware co-design FPGA |
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