Design And Analysis Of Signature Algorithm And Protocol In Mobile Payment

With the popularity of mobile payment technology, mankind’s daily life has become convenient. And communication and shopping are no longer limited by time and place, therefore the prospects for mobile payments become broad. But the problem of low safety and low efficiency still exists in the digital signature and mobile payment protocol. In view of the above problems, this paper presents improved digital signature algorithm and key agreement protocol based mobile payment protocol. The specific works are as follows(1) This paper presents an improved elliptic curve digital signature algorithm. Through a large number of comparative experiments, this paper concludes as the follows:The scheme improves the performance of digital signature algorithm, and reduces algorithm’s computational complexity. This scheme can help the mobile users to better protect their privacy and prevent malicious attackers to steal, destroy mobile user’s communication information.(2) In this paper, we propose a key agreement protocol based on the extended Chebyshev chaotic map, and the new agreement contains three components:user Ui, registration center RC and server S. The new agreement contains symmetric encryption, public-key encryption, chebyshev mapping and hash functions, so it can ensure the security.(3) In this paper, we propose mobile payment protocol based on key agreement protocol. The protocol is based on symmetric key system, and can be applied in wireless network environment. In this agreement, users do not need a lot of computations on keys. By experiments, we draw the following conclusions:The protocol can effectively guarantee the privacy of customer and safety of transaction information, and this protocol is sufficient to ensure the security requirements of the parties involved in the agreement, so it has the value of practical application.