A Novel Approach for Secret Data Transfer using Interpolation and LSB Substitution with Watermarking: A Survey

Today’s large demand of internet applications requires data to be transmitted in a better manner. Data is transferred in public communication system is not secure because of interception and improper manipulation by eavesdropper. So the better solution for this issue is Steganography, which is the technique of writing hidden messages in such a way that no one, apart from the sender and main receiver recipient, detects the existence of the message, a type of security through obscurity. In this thesis, the Steganographic method used is based on steganography which is concerned with embedding secret data in a file. In this thesis a semi-reversible data hiding method that utilizes interpolation and the least significant substitution technique is proposed with watermarking technique. The least significantbit (LSB) based technique are very popular for steganography in spatial domain. The easiest LSB technique simply replaces the LSB in the cover image with the bits from secret information. Further latest techniques use some criteria to identify the pixels in which LSB(s) can be replaced with the bits of secret information. The performance of hiding method was tested using the fidelity measures Mean Square Error (MSE), and Peak Signal to Noise Ratio (PSNR) to describe the overall error rate. Keywords—steganography.LSB substitution. interpolation. image security