A payment mechanism with multi-authority and privacy protection in mobile social networks

摘要

In order to solve problems of providing mobile payment services safely and maximizing the benefits of users, we use attribute-based encryption to propose a joint payment mechanism. Multiple users can get together to obtain one or more services with using pseudonyms, and protect its privacy and decrease the cost. Since the user's attribute key is distributed by multiple authorization centers, it can effectively solve the performance bottlenecks of a single authorized organization. With the help of decryption outsourcing and fixed ciphertext encryption technology, the new scheme greatly reduces the user's computing overhead and storage overhead. In addition, linear secret sharing matrix is introduced to achieve a flexible resource access control policy for users. Analysis results show that the proposed scheme has lower computational complexity and realizes secure communication than the existing similar scheme.