Difference similitude matrix (DSM) is effectivein reducing information system with its higher reduction rate and higher validity. We use DSM method to analyze t
We first discusses some threats to VolP system and H. 323 architectures designed for VolP communications on security point of view. Continues with presenting se
The proposed method inserts a watermark into the spectral components of the data using techniques analogous to spread spectrum communications, hiding a narrow b