Image Integrity Authentication Scheme Based on Fixed Point Theory
Image Integrity Authentication Scheme Based on Fixed Point Theory
复制标题
基于不动点理论的图像完整性认证方案
DOI：
10.1109/tip.2014.2372473
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发表时间：
2013-08
影响因子：
10.6
通讯作者：
Quansheng Liu
中科院分区：
文献类型：
--
作者：
Xu Li;Xingming Sun;Quansheng Liu
基于不动点理论，提出了一种与数字签名和脆弱水印截然不同的图像完整性认证方案。通过新的方案，发送方将原始图像转换为定点图像（非常接近原始的）一个精心选择的变换，并发送固定点图像（而不是原来的）接收器;使用相同的变换，接收机通过测试所接收的图像是否是定点图像来检查其完整性，传输新方案的实现基于高斯卷积与反卷积（GCD）变换，并证明了其不动点的存在性定理。利用变换的交换性分析了GCD变换的半脆弱性，得到了GCD变换的三个交换性定理。提出了三种迭代算法，用于用较少的迭代次数找到图像的不动点，并用于图像完整性认证的整个过程，分别建立了脆弱认证系统和半脆弱认证系统.实验结果表明，这两个系统在容错性、脆弱性、安全性和篡改定位等方面都具有良好的性能.特别是，半框架系统可以完美地抵抗90°翻转和亮度攻击的倍数的旋转。
Based on the fixed point theory, this paper proposes a new scheme for image integrity authentication, which is very different from digital signature and fragile watermarking. By the new scheme, the sender transforms an original image into a fixed point image (very close to the original one) of a well-chosen transform and sends the fixed point image (instead of the original one) to the receiver; using the same transform, the receiver checks the integrity of the received image by testing whether it is a fixed point image and locates the tampered areas if the image has been modified during the transmission. A realization of the new scheme is based on Gaussian convolution and deconvolution (GCD) transform, for which an existence theorem of fixed points is proved. The semifragility is analyzed via commutativity of transforms, and three commutativity theorems are found for the GCD transform. Three iterative algorithms are presented for finding a fixed point image with a few numbers of iterations, and for the whole procedure of image integrity authentication; a fragile authentication system and a semifragile one are separately built. Experiments show that both the systems have good performance in transparence, fragility, security, and tampering localization. In particular, the semifragile system can perfectly resist the rotation by a multiple of 90° flipping and brightness attacks.
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DOI：
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发表时间：
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期刊：
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影响因子：
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作者：
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通讯作者：
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DOI：
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发表时间：
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期刊：
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影响因子：
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作者：
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影响因子：
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DOI：
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发表时间：
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期刊：
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影响因子：
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