Information Hiding Techniques for Steganography and Digital Watermarking
Information Hiding Techniques for Steganography and Digital Watermarking
A More Secure Steganography Method in Spatial Domain
ISMS '11 Proceedings of the 2011 Second International Conference on Intelligent Systems, Modelling and Simulation
High capacity and secured methodologies for steganography
International Journal of Electronic Security and Digital Forensics
Steganographic manipulations with elliptic curve cryptography
International Journal of Electronic Security and Digital Forensics
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In this paper, a new approach is adopted to embed an image within an image using a modified Hill cipher method. The secret image is taken and rearranged to form N 2 × 2 matrices. A key matrix of length 2 × 2 is multiplied with all the N matrices and modulo-256 operation is performed. Then the new N matrices are rearranged to form a one-dimensional matrix. Each element of this matrix is converted to its binary value. A cover image is taken and in each of its pixels, the two least significant bits LSB are replaced with two bits from the binary matrix successively. While retrieving, the last 2 bits from each cover pixel are taken out, arranged to form a binary matrix and are converted into their respective 8-bit values. This one dimensional array is converted into N 2 × 2 matrices. These matrices are multiplied with the inverse of the key matrix to get the original values. These values are then rearranged appropriately to get the secret image which was transmitted.