Study Of Implementation And Technique On Electronic Cash

E-cash is a very important means of e-payment. This paper offers a deep analysis and research on the present situation of e-cash, implementation scheme and technique. The author finds out through the study that there have been some problems concerning the existing e-cash scheme and security, such as complete anonymity which can be easily exploited by criminals and it is also very difficult to be widely applied to cross-trade activities. This paper provides an anonymously-controlled e-cash scheme based on ECC. The scheme introduces a trustworthy third party authentication system on the basis of Brands, adopts high efficient and secure ECC digital signature which is widely accepted at present and improves the efficiency and security of e-cash. The paper also offers the specific implementations of the improved Brands scheme and conducted some performance analysis.This paper first analyzes the implementations of major e-cash schemes now available and points out its advantages and disadvantages, and much importance is attached to the improvement of Brands: The first, change blind signature based on DLP to more efficient and secure ECC; The second, introduce CA authentication center as the reliable third party so as to fulfill the anonymous tracking of the suspicious cash and the tracking techniques are provided at the same time.