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E-cash for its convenience , economy , efficiency is rapidly becoming the main way to pay for the field of electronic commerce , how to design and implement security , efficient and can be divided into electronic cash system has become a hot research field of electronic payment . Firstly a brief introduction to the basic knowledge of e-cash domestic and overseas research , the use of the basic techniques , and then on the current electronic cash system analysis and design can be divided into a new type of electronic cash scheme . Secondly, some new theory and research can be divided into the field of e-cash method of this paper, the work done by the following aspects: 1 ) the analysis and study of the existing electronic cash system , can be divided into electronic the issue of over - spending , double-spending cash system design can be divided into a smart card-based electronic cash system , by early inspection of the smart card , to prevent duplication and over - spending of electronic cash , to effectively curb the occurrence of illegal activities . 2) problem for divisible e- cash system efficiency , through analysis, research and design of the trusted third party can be divided into electronic cash system , adding compression payment and batch payment process , the overall processing of the data to be processed , reduce the time complexity of the system and improve the overall efficiency of the system . 3 ) Based on the the hyperbola mapping signature having a length of the signature and key lengths much shorter than the length of the signature mechanism advantages , but also based on the the hyperbola mapping signature mechanism having a higher level of security , based on these characteristics , in addition to compression pay Divisible E -cash system and batch payment , based on the signature of hyperbolic mapping design an electronic cash scheme , higher guarantee the safety and efficiency of the system . Finally, a summary can be divided into electronic cash system , pointing out that the problem can be divided into electronic cash system still exists , make an outlook on the future development of the divisible e- cash system .
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