Improvements of image sharing with steganography and authentication

  • Authors:

  • Ching-Nung Yang;Tse-Shih Chen;Kun Hsuan Yu;Chung-Chun Wang

  • Affiliations:

  • Department of Computer Science and Information Engineering, National Dong Hwa University, #1, Sec. 2, Da Hsueh Rd., Hualien, Taiwan;Department of Computer Science and Information Engineering, National Dong Hwa University, #1, Sec. 2, Da Hsueh Rd., Hualien, Taiwan;Department of Computer Science and Information Engineering, National Dong Hwa University, #1, Sec. 2, Da Hsueh Rd., Hualien, Taiwan;Department of Computer Science and Information Engineering, National Dong Hwa University, #1, Sec. 2, Da Hsueh Rd., Hualien, Taiwan

  • Venue:
  • Journal of Systems and Software
  • Year:
  • 2007

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Abstract

Recently, Lin and Tsai proposed an image secret sharing scheme with steganography and authentication to prevent participants from the incidental or intentional provision of a false stego-image (an image containing the hidden secret image). However, dishonest participants can easily manipulate the stego-image for successful authentication but cannot recover the secret image, i.e., compromise the steganography. In this paper, we present a scheme to improve authentication ability that prevents dishonest participants from cheating. The proposed scheme also defines the arrangement of embedded bits to improve the quality of stego-image. Furthermore, by means of the Galois Field GF(2^8), we improve the scheme to a lossless version without additional pixels.