An effective ID-based mobile business system

With rapid development of mobile communication, mobile business is becoming one important part of our life. However, the security of mobile business is impacting its wide development. In traditional mobile business based CA, the certificate database is needed to distribute the digital certificate. And it is necessary to query certificate database for getting the public key. In order to solve these problems, an effective ID-based mobile business system is put forward in this paper. In the system, mobile business process is implemented by private key generator (PKG), while traditional mobile business by CA. In the process of verifying signature, the public key of mobile users can be directly computed by their identity without binding their public key and their identity to establish their relations. Moreover, mobile users don´t need to access certificate authority, which simplifies the management and distribution of public key, avoids to building certificate database and decreases the cost and the corresponding security risk. Therefore, the ID-based mobile business system is widely used in modern E-Commerce.