 技術摘要 / Our Technology： |
本發明揭露一種隱形墨水式數位資訊隱藏技術，有別於一般的數位資訊隱藏技術，本發明將針對數位媒體的特定攻擊處理做為正確取出隱藏資訊時的必要機制。當接收者收到利用隱形墨水式資訊隱藏技術藏入秘密的多媒體資料時，如果沒有對該媒體進行特定的處理動作，便只會解出錯誤或偽裝的訊息。但如果利用接收端常見的多媒體處理工具進行雙方事先約定好的特定媒體處理(例如對藏有訊息的影像進行特定品質的影像壓縮、模糊化和色彩調整等)後，便可取出正確的秘密訊息。
A novel steganographic approach analogous to the real-world secret communication mechanism, in which messages to be concealed are written on white papers using invisible ink like lemon juice or milk and are revealed only after the papers are heated, is proposed. Carefully designed informed-embedders now play the role of “invisible ink”; some pre-negotiated attacks that can be provided by common content processing tools correspond to required “heating” process. Theoretic models and feasible implementations of the proposed digital-invisible-ink (DII) watermarking approach are provided. The proposed DII watermarking schemes can prevent the supervisor from interpreting secret messages even the watermark extractor, decryption tool, as well as session keys are available to the supervisor. Furthermore, under certain steganographic application scenarios, secret communication systems employing the DII watermarking schemes can aggressively mislead the channel supervisor with fake payloads and transmit genuine secrets at the same time.
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| 專利簡述 / Intellectual Properties： |
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聯繫方式 / Contact： |
| 臺大產學合作總中心 / Center of Industry-Academia Collaboration, NTU |
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| Email：ordiac@ntu.edu.tw |
電話/Tel：02-3366-9945 |
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專利行銷平台