Abstract This paper makes an analysis and a comparison of three multisource information service models in typical environment and other two models in cloud computing in details from the basic structure, service process, service characteristics and their applications. On the basis of it, according to the characteristics of multisource information service in cloud computing, a multisource information service model based on trusted thirdparty supervision in cloud computing is proposed from a security view. And it is analyzed and designed from character design, service process, supervision strategy and supervision cost. This model can provide information service with security protection.
2012, Vol. 9 
