Performance Analysis of Least Significant Bit Based Watermarking Technique Under Various Types of Attacks

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Digital information transferred through internet should be protection from unauthorized and attack resource using one of the information security system method, one of these methods was digital watermarking was used in order to prevent information from various types of attack adversary since it satisfies all security system requirements (authentication, integrity and confident). Digital watermarking is used digital image for several purposes such as authentication, copyright, and many purposes. This paper we embedded (number of bits) MSB of watermark image in the (number of bits) LSB of cover image by proposed embedding algorithm, where the ratio of appearing information of the watermark in the watermarked image depends on a number bits embedded. Such that increasing the number bits increase the information display. The performance of the algorithm for watermarking and quality of reconstructed image have been measured in terms of MSE and PSNR. This paper produced performance analysis of image watermarking technique depend on least significant bit against several attacks (Gaussian, salt and pepper noise, Poisson and Speckle). The result of the attack appears that salt and pepper attack give best result than other types when it applied on the original image and watermarked image. Simulation results show that best results were achieved against Salt and Pepper attack in terms of less MSE and high PSNR. MATLAB language is used for implementing the suggested Algorithm.