IMPROVED AES AND DES FOR TEXT WATERMARKING IN DOCUMENTS

Abstract

With secure communication of information over public networks is one of the most imperative challenges. Mutually all the accomplishments to protect texts as well as to break security are quiet popular. With the intention of reduction in the probabilities of attacks, security necessities on the way made to be undetectable. The requirements to reserve ownership information, originality, as well as integrity of text files in such a way which could possibly not be able to acknowledged via everyone is in actuality felt badly. Watermarking of the text files is an important step in the direction of accomplishing these objectives. Nevertheless, to watermark a simple text file (ASCII) in such a way in which the original text will not transform (and it would possibly be quiet problematic to break it), is a big challenge. We have established a novel encoding which can be utilized to insert data in plain text deprived of changing the text file and decoding scheme which can be utilized to extract data from plain text without changing the text file. A system has been established based upon this scheme which includes AES algorithm as well as DES algorithm. This paper describes the system and demonstrates its workings in MATLAB environment