A Hybrid Concept of Cryptography and Dual Watermarking (LSB_DCT) for Data Security

Introduction

Now a days, digital media is extremely used through the internet, and the requirement for copyright protection of hypermedia products has emerged. Research has been concentrated to solve a problem of copyright protection and authentication of digital data. In digital data, there is no major difference between the origin data and its copy, so it is very difficult task to identify the original data. Hence, the security of the intellectual property is necessary and important for the society (Sridhar et al., 2010). There are many techniques available for copy right protection. Watermarking is one of the popular techniques for protection of text, image video, audio data. Watermarking is a technique which hides information into original data (Karimi et al., 2013)