Sipf

Ensuring the security and privacy of vehicular ad hoc networks (VANETs) and related services such as secure payment has been the focus of recent research efforts. Existing secure payment solutions generally require stable and reliable network connection. This is, however, a challenge in a VANET setting. Drive-thru Internet, a secure payment solution for VANETs, involves a great number of fast-moving vehicles competing for connections/communications simultaneously. Thus, service providers may find it challenging to provide real-time payment services or may have to sacrifice the confidentiality and the authenticity of payment vouchers for usability. In this article, we propose a secure installment payment framework for drive-thru Internet deployment in a VANET setting. The framework also provides the capability to embody properties such as confidentiality of payment vouchers, offline signature verification, periodical reconciliation, and installment payment. Performance evaluation and security analysis demonstrate the utility of the framework in a VANET setting.