Verification of Receipts from M-Commerce Transactions on NFC Cellular Phones

A main challenge in mobile commerce is to make it possible for users to manage their transaction histories from both online e-commerce transactions and in-person transactions. Such histories are typically useful to build credit or to establish trust based on past transactions. In this paper authors propose an approach to manage electronic receipts on cellular devices by assuring their secure and privacy-preserving usage. Authors provide a comprehensive notion of transactions history including both on-line transaction and in-person transactions. Authors apply cryptographic protocols, such as secret sharing and zero knowledge proofs, in a potentially vulnerable and constrained setting. Specifically, the approach supports flexible strategies based on Shamir's secret sharing to cater to different user requirements and architectural constraints.