摘要： 根据移动商务中计算能力不对等的特点，针对数字图像，提出了一种新的有效的数字签名方案。在不泄漏图像原始信息的情况下，将信息分块之后发送给TP(Third-party)进行签名计算，然后将中间结果发回移动设备进行组合。描述了该协议的运行过程，分析了其在运算速度方面的性能，证明了该协议对各种网络攻击和网络意外所具有的安全解决能力。理论证明该方法可以在一定程度上解决未来移动商务中计算能力不对等的问题，并且可以保证通信的安全性。

关键词: 移动商务, 数字图像, 安全, 数字签名

Abstract: According to the difference of computing capability in mobile commerce, a new effective digital signature protocol aimed at digital images is put forward. Its basic thought is to send divided message to third party server and finish the digital signature, then the middle result is sent back to mobile devices to be made up. Operation process of this protocol is described, and its performance in improving the speed is analyzed, then the security ability toward various networks attack and accidents is demonstrated. Theory proves this protocol can solve the problem of different computing capability in mobile commerce, and guarantee the communication security.

Key words: M-commerce, digital image, security, digital signature

中图分类号: 

• TP391