A Block-based Adaptive Data Hiding Approach using Pixel value difference and LSB Substitution to Secure E-Governance Documents

다국어 초록 (Multilingual Abstract)

In order to protect secret digital documents against vulnerabilities while communicating, steganographyalgorithms are applied. It protects a digital file from unauthorized access by hiding the entire content. Pixelvalue-difference being a method from spatial domain steganography utilizes the difference gap betweenneighbor pixels to fulfill the same. The proposed approach is a block-wise embedding process where blocks ofvariable size are chosen from the cover image, therefore, a stream of secret digital contents is hidden. Leastsignificant bit (LSB) substitution method is applied as an adaptive mechanism and optimal pixel adjustmentprocess (OPAP) is used to minimize the error rate. The proposed application succeeds to maintain good hidingcapacity and better signal-to-noise ratio when compared against other existing methods. Any means of digitalcommunication specially e-Governance applications could be highly benefited from this approach.

참고문헌 (Reference)

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