In the study of content authentication and tamper detection of digital text documents, there
are very limited techniques available for content authentication of text documents using
digital watermarking techniques. In this paper, we have extended the proposed LNMZW3
algorithm presented in [27] for content authentication and tamper detection of English text
documents and abbreviated as ADV-LNMZW3. In the enhanced algorithm, third order and
letterbased of Markov model has uses in this paper as soft computing tools in order to …