Enhanced signature RTD transaction scheme based on Chebyshev polynomial for mobile payments service in IoT device environment

The union of near-field communication (NFC) and mobile devices has led to significant changes in payment systems over recent years. Currently, NFC-based services are the leading form of mobile payment method. In particular, many companies that use electronic payment services are adopting NFC systems to replace credit cards. Additionally, the safety of communication has been enhanced by using standard techniques to activate NFC services. The properties of mobile NFC payments provide a business model for the Internet of Things (IoT) environment. However, electronic payment methods based on NFC are still vulnerable to various security threats. One example is the case of credit card data hacking under the KS X 6928 standard. In particular, the security level of the NFC payment method in passive mode is limited by the storage, power consumption, and computational capacity of the low-cost tags. Recently, chaotic encryption based on Chebyshev polynomials has been used to address certain security issues. Our proposed scheme is based on the Chebyshev chaotic map, unlike traditional encryption protocols that apply complex cryptography algorithms. Considering the tag limitations, the hash, XOR, and bitwise operations in the proposed scheme provide high-level security for payment environments. We propose a security-enhanced transaction scheme based on Chebyshev polynomials for mobile payment services in an IoT device environment considering the signature record-type definition and KS X 6928 standard.