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Speaker: Meng -Jing Tsai Date: 2012.09.10 Authors: Chih-Hsuan Tzeng , Wen -Hsiang Tsai

Hiding Binary Images behind Noise with Authentication Capability: A New Approach to Covert Communication. Speaker: Meng -Jing Tsai Date: 2012.09.10 Authors: Chih-Hsuan Tzeng , Wen -Hsiang Tsai

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Speaker: Meng -Jing Tsai Date: 2012.09.10 Authors: Chih-Hsuan Tzeng , Wen -Hsiang Tsai

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  1. Hiding Binary Images behind Noise with Authentication Capability: A New Approachto Covert Communication Speaker: Meng-Jing Tsai Date: 2012.09.10 Authors: Chih-HsuanTzeng, Wen-Hsiang Tsai Source: Proceedings of  IEEE 37th Annual 2003 International Carnahan Conference on Security Technology, Oct. 2003, pp. 232-236

  2. Outline • Introductions • Proposed Method • Experimental Result • Conclusions

  3. Introductions • Covert communication • There were only a few studies in the past about hiding information behind binary images. • difficult • limited data embedding

  4. Proposed Method Hiding g2 Ki g1 seed K K1, K2, K3, … , Ki secret image block noise block

  5. Proposed Method Hiding g3 Ki 1 0 0 1 g4 Xi 1 authentication XOR secret secret image block noise block Authentication bits 1101110

  6. Proposed Method Hiding secret image block cover resulting

  7. Proposed Method Recovering g3 Ki g1 seed K K1, K2, K3, … , Ki g4 Xi authentication secret Authentication bits 1101110

  8. Proposed Method Recovering g2 Ki XOR noise block cover resulting secret image block

  9. Experimental Result Secret binary image 1024*768 Cover noise image resulting 1152*864 K=1234

  10. Conclusions A larger data-embedding capacity can be provided by the cover noise image. The proposed method ensures full recoverability of hidden secret data from cover noise images.

  11. Thank youfor your listening.

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