An Untraceable Off-Line Electronic Cash Scheme without Merchant Frauds

Autor: Danhui Xu, Baoyuan Kang
Rok vydání: 2016
Předmět:
Zdroj: International Journal of Hybrid Information Technology. 9:431-442
ISSN: 1738-9968
DOI: 10.14257/ijhit.2016.9.1.38
Popis: In an electronic cash scheme, there are three participants, the bank, the spender and the merchant. First, a spender opens an account in a bank. Then, he withdraws electronic cash from his account and pays it to a merchant. After checking the electronic cash’s validity, the merchant accepts it and deposits it to the bank. There are a number of requirements for an electronic cash scheme, such as, anonymity, unforgeability, unreusability, date attachability, divisibility, transferability and portability. In this paper, we show a recently proposed electronic cash scheme is suffering from some faults in anonymity, expiration date and merchant frauds. To improve the scheme, we propose a new untraceable off-line electronic cash scheme and give a security analysis for it.
Databáze: OpenAIRE