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
This paper proposes a micropayment scheme designed for GSM mobile scenario, where the overload of computation, storage and communication for mobile phone is reduced by directing operations normally performed by the mo...This paper proposes a micropayment scheme designed for GSM mobile scenario, where the overload of computation, storage and communication for mobile phone is reduced by directing operations normally performed by the mobile user to the static portion of the network in view of its limited capability. Messages which received and sent during the payment are very simple and public key infrastructure is not needed, which reduces delay and removes the possibility of incomplete payment due to communications failures. Furthermore, all the information related to payment is encrypted by a shared symmetric key in our scheme, so the privacy of the mobile user is protected and the security of information is guaranteed. Compared with other mobile micropayment schemes in existence, no public-key operation is required, which minimizes the computation and storage overhead dramatically. In addition, restricted anonymous is also provided in our scheme. Key words micropayment - mobile phone - GSM - fairness CLC number TP 309.2 Foundation item: Supported by the National Natural Science Foundation of China (90104033)Biography: FU Xiong (1968-), male, Ph.D. candidate, research direction information security, electronic payment and modern cryptography.展开更多
2G和3G的一个重大区别就是VASP(Value-Added Service Provider,增值服务提供商)的大量出现。该文介绍了一个适用于 UMTS环境、对VASP实现安全计费的模型及其协议。介绍了协议如何实现,以获得灵活、高效和不可抵赖的计费。最后还分析了...2G和3G的一个重大区别就是VASP(Value-Added Service Provider,增值服务提供商)的大量出现。该文介绍了一个适用于 UMTS环境、对VASP实现安全计费的模型及其协议。介绍了协议如何实现,以获得灵活、高效和不可抵赖的计费。最后还分析了协议的一些突出特点,列举出协议中的一些问题并给出了可能解决方法。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
This paper describes two kinds of micropayment based on scrip Millicent and MicroMint, especially an-alyzes their security、advantages and disadvantages ,then prospects the development of micropayment.
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This paper proposes a micropayment scheme designed for GSM mobile scenario, where the overload of computation, storage and communication for mobile phone is reduced by directing operations normally performed by the mobile user to the static portion of the network in view of its limited capability. Messages which received and sent during the payment are very simple and public key infrastructure is not needed, which reduces delay and removes the possibility of incomplete payment due to communications failures. Furthermore, all the information related to payment is encrypted by a shared symmetric key in our scheme, so the privacy of the mobile user is protected and the security of information is guaranteed. Compared with other mobile micropayment schemes in existence, no public-key operation is required, which minimizes the computation and storage overhead dramatically. In addition, restricted anonymous is also provided in our scheme. Key words micropayment - mobile phone - GSM - fairness CLC number TP 309.2 Foundation item: Supported by the National Natural Science Foundation of China (90104033)Biography: FU Xiong (1968-), male, Ph.D. candidate, research direction information security, electronic payment and modern cryptography.
文摘2G和3G的一个重大区别就是VASP(Value-Added Service Provider,增值服务提供商)的大量出现。该文介绍了一个适用于 UMTS环境、对VASP实现安全计费的模型及其协议。介绍了协议如何实现,以获得灵活、高效和不可抵赖的计费。最后还分析了协议的一些突出特点,列举出协议中的一些问题并给出了可能解决方法。
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.
文摘This paper describes two kinds of micropayment based on scrip Millicent and MicroMint, especially an-alyzes their security、advantages and disadvantages ,then prospects the development of micropayment.
