- مبلغ: ۸۶,۰۰۰ تومان
- مبلغ: ۹۱,۰۰۰ تومان
In this paper, we present an on-line electronic payment system for low-value transaction. We use the concept of signcryption for each communication between any pair of entities and offers token updation instantly as an add-on feature to existing on-line e-cash systems where token is the payment instrument (containing electronic cash) which acts as an electronic wallet. In our system, the token is issued and authenticated by Issuing Bank (token issuer). Merchant verifies the user and sends authenticated transaction details to Issuing Bank. Later Issuing Bank verifies approval of both customer and merchant. The merchant is also verified by its financial institution. Unlike the existing e-payment system question of double spending of e-cash arises because each transaction are made uniquely identifiable and updation is instantly done by Issuing bank. Hence no separate protocols are needed to be developed for handling disputes. The proposed scheme provide anonymity, authenticity, confidentiality and fairness.