Network forensic for web JPEG image transmission

Abstract Nowadays, web transmission is common and JPEG image are widespread on the Internet. But digital distribution may suffer problems including illegal duplication, piracy and pornographic inundation. Pictures circulating on the Internet are mostly in JPEG format. It is important for digital forensic measure to provide evidences of illegal distribution. In this paper, a digital feature retrieval scheme for JPEG images is proposed to avoid disseminating unlawful JPEG images. The scheme could extract JPEG binary data at the packet level using a DC feature to search for suspicious files. According to the experiment results, our method could reduce the storage volume of JPEG image files and retrieve effective features quickly from the network.