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公开(公告)号：US20190356476A1
公开(公告)日：2019-11-21
申请号：US16482703
申请日：2018-01-31
Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
Inventor： Lilei ZHENG , Ying ZHANG , Vrizlynn THING
Abstract: A method and an apparatus for generating cover images for steganography are provided. The steganographic framework is designed based on an image generation system. The apparatus may encode a message to obtain a binary sequence. The apparatus may obtain a plurality of binary segments of a particular length based on the binary sequence. For each binary segment of the plurality of binary segments, the apparatus may select an image of a semantic content (e.g., a numeral digit) from a dictionary of images of random semantic contents (e.g., random numeral digits) based on the binary segment. The apparatus may combine the selected images to form at least a portion of a cover image denoting a combination of the semantic contents of the selected images (e.g., a plurality of numeral digits).
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公开(公告)号：US20190104151A1
公开(公告)日：2019-04-04
申请号：US16087625
申请日：2017-03-23
Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
Inventor： Long CHENG , Dinil Mon DIVAKARAN , Wee Yong LIM , Vrizlynn THING
Abstract: A method for IP traceback is provided comprising receiving a traceback request including the identity of a traceback-deployed autonomous system closest to the destination node in a network routing path, recursively querying a traceback server associated with the traceback-deployed autonomous system to receive the identity of a preceding traceback-deployed autonomous system in the network routing path, and determining the network routing path based on the received identities of traceback-deployed autonomous systems. Additionally, authentication for traceback request is achieved using token delivery, wherein token is fragmented and marking of a packet is performed when a field on the packet matches at least one token fragment.
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