Autentification of text documents using digital watermarking

Important text documents are transferred increased over apparently safe digital nets. Unfortunately also these can be intercepted and changed illegally, which can lead to unwanted and fatal wrong decisions. The correct solution for this problem definition is a "digital watermarking". By these the sender can guarantee that the receiver can recognize whether he the document receives, which was sent by the receiver. This paper proposes a text watermarking algorithm that exploits the novel concepts of text autentification.