Design And Implementation Of Information Hidding Function Based On Sipdroid Platform

Network telephone have the advantages of low cost,easy operation,high platform compatibility,better service and other advantages,rapid development and get the favor of the vast number of consumers.The network telephone make use of the advantage of the network,at the same time make itself in the open network environment.In the open network environment,When transferring data,the information is easy to loss which caused by copied,stolen,attacked and other factors,Therefore,the information hiding technology,which is different from encryption technology,is adopted to ensure the security of the transmission secret information.Combining the advantages of network telephone and information hiding technology,this paper does some research and implementation of the two advantages.This paper is based on the existing open source network telephone platform-Sipdroid,On the basis of Sipdroid system,analysis and design,add information hiding module,the information hiding module is used to realize the secret information hiding and extracting in real time voice stream,the main work as follows:1: Research and analysis of Sipdroid..Analysis the principle of Sipdroid implementation,the key agreement and corresponding codec standards.According to the logic function of Sipdroid system,it is mainly divided into four modules,and analysis the function of each module,the realization process and the connection with other modules.2: Analysis and Design of Information Hiding Function of Sipdroid.On the basis of existing modules,According to the secret information hiding and extracting function,to carry out the corresponding analysis and design.Adding information hiding algorithm selection function,users can choose different information hiding algorithms to realize information hiding function,add secret information input and secret information view in the real-time call interface.3:Implementation of information0 hiding based on Sipdroid system.When the two sides in the voice call,to call the information hiding algorithm to embed the secret information in the voice stream for transmit,so that the secret information reach the receiver with voice transmission through the network.The receiver extracts the secret information from the received voice stream to check,thus effectively ensuringthe security of the secret information.The test results show that the information hiding technology based on Sipdroid system has good security and real-time.