The Watermarking Method Based On RNS For Uphold The Publisher's Law

In recent years, as for daily spread of communications in the world, there has been an increasing interest in protecting data and information against copy and counterfeit. For this we have to use solutions for controlling copy and counterfeit .The Watermarking method is one of the more practical ways of uphold the publisher's law . Generally, The Watermarking Method means hide the data in a cover for exert ownership right that only admissible people can extract this data. This paper will focus on and propose the way of protect ownership right based on the multilevel-residue number system (RNS).The aim of this study is protect publishers' law , with reusable ability via create a digital si gnature that after it's created , can be embedded in un-use positions of look-up tables of RNS-based designs. This type of embedding does not increase the area of the system .The paper also render a technique for extract digital signature. So, the issue is possible to recogni ze publisher's law without any disturbance in the system operation.