电子现金（E-cash）.doc

电子现金（E-cash） E-cash What is electronic cash? Electronic cash is a currency in the form of data. It converts cash values into a series of encrypted sequences that represent the value of various currencies in reality. After opening an account at a bank that has an electronic cash business and storing money in the account, users can shop at an electronic cash store. Characteristics of electronic cash The proper protocol and the relationship between bank and business license. The users, businesses and banks are required to use the E-Cash E-Cash software. The E-Cash is responsible for funding the bank transfer between users and businesses. The authentication is done by E-Cash itself. E-Cash bank uses digital signatures when it comes to issuing electronic currency. In each transaction, the merchant sends electronic money to the E-Cash bank to verify whether the user supported electronic currency is valid (forged or used) by the E-Cash bank. The anonymous. It has the characteristics of cash, can access, transfer, trading volume is suitable for small. Electronic cash payment problems After only a few merchants to accept electronic cash, and only a handful of banks to provide electronic cash account services. The cost is high. Electronic cash has high technical requirements for hardware and software, requiring a large database to store transactions completed by users and E-Cash serial numbers to prevent repeated consumption. Therefore, it is necessary to develop hard software and low cost electronic cash. The existence of currency exchange issues. Because the electronic money is still using the traditional monetary system as the basis, so the German banks only in German Mark issued in the form of electronic cash, electronic cash, Bank of France issued by Lang based and so on, so it is necessary to use in international trade exchange software special. The risk is bigger. If a users hard drive damage, electronic cash loss, money can not be restored, the risk of many consumers