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Hiding a Covert Digital Image by Assembling the RSA Encryption Method and the Binary Encoding Method

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  • Kuang Tsan Lin
  • Sheng Lih Yeh

Abstract

The Rivest-Shamir-Adleman (RSA) encryption method and the binary encoding method are assembled to form a hybrid hiding method to hide a covert digital image into a dot-matrix holographic image. First, the RSA encryption method is used to transform the covert image to form a RSA encryption data string. Then, all the elements of the RSA encryption data string are transferred into binary data. Finally, the binary data are encoded into the dot-matrix holographic image. The pixels of the dot-matrix holographic image contain seven groups of codes used for reconstructing the covert image. The seven groups of codes are identification codes, covert-image dimension codes, covert-image graylevel codes, pre-RSA bit number codes, RSA key codes, post-RSA bit number codes, and information codes. The reconstructed covert image derived from the dot-matrix holographic image and the original covert image are exactly the same.

Suggested Citation

  • Kuang Tsan Lin & Sheng Lih Yeh, 2014. "Hiding a Covert Digital Image by Assembling the RSA Encryption Method and the Binary Encoding Method," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-8, March.
  • Handle: RePEc:hin:jnlmpe:603659
    DOI: 10.1155/2014/603659
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