A web application tamper proof method based on text and image watermarking

With the rapid development of Internet, web attacking, as well as important pages tampering, again and again take place every day, webpage security is paid more and more attention. This paper presents a novel web application tamper proof method based on text watermarking and image watermarking, this method generate grayscale image with ASCII code, then make use of dual chaotic map in Encryption and decryption process as well as in process of embedding and detection of watermark. The results of experiment show that the method has relatively high reliability, and has application value to prevent webpage from tampering.