Replay Attack Preventtion System

Abstract

Various aspects of the disclosure relate to a smart contract-based security system for near field communication (NFC) data transactions. An NFC data transaction initiated by a first computing device generates a transaction token used to complete the NFC data transaction with a second computing device via an NFC communication link between the two devices. The transaction token is communicated to a remote device with transaction information, where the transaction information may be embedded with the transaction token. The transaction token is processed via smart contract operation to analyze the transaction token to determine whether the token is valid. If valid, the smart contract triggers completion of the data transaction. If invalid, the data transaction is inhibited by the smart contract. Once processed, the smart contract modifies transaction parameters and generates a stale token.

CPC Classifications