With the wide use of various communication technologies and Internet, it has become tremendously easy to reduce, communicate, and distribute digital contents. As far as there is authentication and copyright protection issue have arisen. Textual way of communication is the most widely used medium for traveling the data over the Internet besides images, audio and video. There are various platforms for the plain text such as books, newspaper, web pages, advertisement, research papers, legal documents, letters, novels, poetry, and many other documents. Security of text contents is a significant...