2nd National Conference on Information and Communication Technology |
Foundation of Computer Science USA |
NCICT - Number 4 |
November 2011 |
Authors: Niloy Kumar Gourh |
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Niloy Kumar Gourh . Collision handling in LSB based Steganography. 2nd National Conference on Information and Communication Technology. NCICT, 4 (November 2011), 16-18.
A number of methods exist for hiding information in various media. These methods range from LSB coding also known as bit-plane or noise insertion tools manipulation of image or compression algorithms to modification of image properties such as luminance. Basic substitution systems try to encode secret information by substituting insignificant parts of the cover by secret message bits; the receiver can extract the information if he has knowledge of the positions where secret information has been embedded. Since only minor modifications are made in the embedding process, the sender assumes that they will not be a problem to hide out the message throughout the cover element. But as the index can appear more than once in the cover element, there might be high chances of collision where the sender will try to store many message bits in a single cover element bits. The approach provided here will try to reduce the problem of collision while inserting message bits into cover element.