State Key Laboratory of Mathematical Engineering and Advanced Computing, Zhengzhou, Henan, 450001, China.
Beijing Institute of Electronic Technology Application, Beijing, 100000, China.
Math Biosci Eng. 2019 May 30;16(5):4908-4922. doi: 10.3934/mbe.2019247.
Steganography poses a serious challenge to forensics because investigators cannot identify even traces of secret messages embedded using a steganographer. Contrarily, the objective of locating steganalysis is to locate the embedded message, which should help extract the secret message. In this paper, a methodology of locating steganalysis using quantitative steganalysis is presented for multiple stego images with embedded messages along the same embedding path. Three typical quantitative steganalysis methods are applied to the methodology to locate the messages embedded using LSB re-placement. Experimental results show that the presented methods can reliably estimate the embedding positions, which verifies the validity of the presented methodology. The presented methodology points out a new use of quantitative steganalysis, and further demonstrates that it is necessary to design more precise quantitative steganalysis methods.
隐写术对取证构成了严重的挑战，因为调查人员甚至无法识别使用隐写术嵌入的秘密消息的痕迹。相反，定位隐写分析的目的是定位嵌入的消息，这有助于提取秘密消息。本文提出了一种使用定量隐写分析定位隐写分析的方法，用于具有沿同一嵌入路径嵌入消息的多个隐写图像。该方法应用了三种典型的定量隐写分析方法来定位使用 LSB 替换嵌入的消息。实验结果表明，所提出的方法可以可靠地估计嵌入位置，验证了所提出方法的有效性。所提出的方法指出了定量隐写分析的新用途，并进一步证明有必要设计更精确的定量隐写分析方法。
