The blind Newton sensitivity attack
The blind Newton sensitivity attack
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牛顿灵敏度盲攻击
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
F. Pérez
中科院分区：
文献类型：
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作者：
Pedro Comesaña Alfaro;L. Pérez;F. Pérez
迄今为止，灵敏度攻击一直被认为是对扩频方案鲁棒性和安全性的严重威胁，因为它提供了一种以最小攻击失真去除水印的实用方法。然而，它还没有被用来篡改其他的水印算法，因为那些使用侧信息。此外，灵敏度攻击从来没有被用来获得虚假的水印内容，也被称为伪造。本文提出了一种基于一般公式的新版本的灵敏度攻击；该方法不需要了解检测函数，也不需要了解其他系统参数，只需要检测器的二进制输出，因此适用于攻击大多数已知的水印方法，无论是篡改水印信号还是获取伪造物。实证结果验证了这种新方法的合理性。
Until now, the sensitivity attack was considered as a serious threat to the robustness and security of spread spectrum-based schemes, since it provides a practical method of removing watermarks with minimum attacking distortion. Nevertheless, it had not been used to tamper other watermarking algorithms, as those which use side-information. Furthermore the sensitivity attack has never been used to obtain falsely watermarked contents, also known as forgeries. In this paper a new version of the sensitivity attack based on a general formulation is proposed; this method does not require any knowledge about the detection function nor any other system parameter, but just the binary output of the detector, thus being suitable for attacking most known watermarking methods, both for tampering watermarked signals and obtaining forgeries. The soundness of this new approach is tested by empirical results.