Safe operation method for offline payment of electronic money

Abstract

The present invention discloses a safe operation method for the offline payment of electronic money and belongs to the technical field of network security. According to the method, system parameters are initialized by a bank server, and a client interacts with the bank server to create an account. After that, the client verifies the identity thereof based on the zero-knowledge proof protocol to withdraw money. During the transaction process, the payment process between a gathering client and a paying client is realized in the privacy protection manner based on the zero-knowledge proof protocol again. When the gathering client receives an evidence of the electronic money, the gathering client interacts with the bank server in an anonymous manner based on the randomized protocol to change the electronic money or store the money in the bank. The safe operation method is applicable to mobile e-commerce environments with weak network signals, and protects the both-side privacies of both paying users and gathering users. The free domination of electronic money by gathering users is enabled, and the realistic money is perfectly simulated. Meanwhile, the functions of privacy, balance and incapable escape of crimes are realized. Therefore, the security of the e-commerce payment is ensured.

Description

technical field [0001] The invention belongs to the technical field of network security, and in particular relates to a safe operation method for off-line electronic money payment in mobile e-commerce. Background technique [0002] In recent years, due to the popularity of mobile devices such as smart phones and tablet computers and the development of 3G and 4G networks, mobile e-commerce has risen rapidly and shown an explosive development momentum. But in today's increasingly serious network security threats, the security of mobile e-commerce has become an important issue that cannot be ignored. Due to the insecurity of wireless network architecture, mobile e-commerce has more threats than traditional e-commerce. Therefore, how to allow users to safely use mobile devices for electronic payment has become an urgent problem to be solved. Currently the three most common mobile payment modes are credit cards, e-wallets and mobile payments. However, these payment methods hav...

AI Technical Summary

Problems solved by technology

[0005] (1) The convenience for merchants to control the received electronic money is poor, that is, the merchant can only deposit the received electronic money into the bank through the operation of the deposit agreement with the bank, and then withdraw the received electronic money through the operation of the withdrawal agreement with the bank. Generated electronic currency for governing use;

[0006] (2) Although technologies such as blind signature and zero-knowledge proof have realized the privacy protection of customers, they cannot protect the privacy of merchants, because purely using zero-knowledge proofs cannot realize the privacy protection of merchants, that is, when customers pay electronic money to merchants, The merchant's identity information can be obtained directly, which leads to the merchant's identity information being disclosed to customers and banks, which brings great potential risks and threats to the merchant

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