Micropayment schemes usually do not provide fairness, which means that either the customer or the merchant, or both, can cheat each other and gain a financial advantage by misusing the protocols. This paper proposes a...Micropayment schemes usually do not provide fairness, which means that either the customer or the merchant, or both, can cheat each other and gain a financial advantage by misusing the protocols. This paper proposes an efficient hash chain-based micropayment scheme, which is an offline, prepaid scheme that supports simpler divisibility of digital coins. In the execution of payment protocol, the customer’s dis- bursement and the merchant’s submittal are performed step by step, whoever cannot gain addition profits even if he breaks off the transaction. The hash chain can also be used for transactions with different mer- chants. Unlike other micropayment schemes, e.g., PayWord, no public-key operation is required,which im- proves the efficiency. The scheme also provides restricted anonymity.展开更多
Using the idea of Payword, the new concept of master-slave payword chain （MSPC） is proposed in this article. MSPC consists of one master payword chain and one slave payword chain. On the basis of MSPC, a new micropa...Using the idea of Payword, the new concept of master-slave payword chain （MSPC） is proposed in this article. MSPC consists of one master payword chain and one slave payword chain. On the basis of MSPC, a new micropayment protocol called discrete micropayment protocol （DMP）, is presented in this article. DMP consists of three sub-protocols： registration, payment, and settlement. Both part fairness and non-unit-wise payment can be provided by DMP.展开更多
基金Supported by the National Natural Science Foundation of China (No. 90104033)
文摘Micropayment schemes usually do not provide fairness, which means that either the customer or the merchant, or both, can cheat each other and gain a financial advantage by misusing the protocols. This paper proposes an efficient hash chain-based micropayment scheme, which is an offline, prepaid scheme that supports simpler divisibility of digital coins. In the execution of payment protocol, the customer’s dis- bursement and the merchant’s submittal are performed step by step, whoever cannot gain addition profits even if he breaks off the transaction. The hash chain can also be used for transactions with different mer- chants. Unlike other micropayment schemes, e.g., PayWord, no public-key operation is required,which im- proves the efficiency. The scheme also provides restricted anonymity.
文摘Using the idea of Payword, the new concept of master-slave payword chain （MSPC） is proposed in this article. MSPC consists of one master payword chain and one slave payword chain. On the basis of MSPC, a new micropayment protocol called discrete micropayment protocol （DMP）, is presented in this article. DMP consists of three sub-protocols： registration, payment, and settlement. Both part fairness and non-unit-wise payment can be provided by DMP.
