A mobile payment mechanism with anonymity for cloud computing

In recent years, traditional transactions have been replaced by electronic transactions. To protect the security of the electronic transactions, various electronic payment (e-payment) mechanisms have been proposed. However, we find the previous e-payment mechanisms do not provide the non-repudiation requirement in the client side. Thus, a malicious client can easily deny the transaction and the merchant may not get the payment. In addition, these mechanisms have large computation and communication costs so they cannot be applied to the mobile payment for cloud computing. To solve the above problems, we propose a new mobile payment mechanism with anonymity for cloud computing in this paper. The proposed mechanism not only reduces the computation cost but also provides the non-repudiation requirement in the client side. Compared with the related works, the proposed mechanism is securer, fairer, and more efficient. Therefore, the proposed mobile payment mechanism is more suitable and practical for the cloud computing. The client can transact anonymously to protect the payment privacy.The client's bank generates the digital signature as the payment proof.The new payment scheme can eliminate the redundant symmetric keys between the client and the merchant.