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Probabilistic Micropayments
(2022)
Probabilistic micropayments are important cryptography research topics in electronic commerce. The Probabilistic micropayments have the potential to be researched in order to obtain efficient algorithms with low transaction costs and high speeding computer power. To delve into the topic, it is vital to scrutinize the cryptographic preliminaries such as hash functions and digital signatures. This thesis investigates the important probabilistic methods based on a centralized or decentralized network. Firstly, centralized networks such as lottery-based tickets, Payword, coin-flipping, and MR2 are described, and an approach based on blind signatures is also discussed. Then, decentralized network methods such as MICROPAY3, a transferable scheme on the blockchain network, along with an efficient model for cryptocurrencies, are explained. Then we compare the different probabilistic micropayment methods by improving their drawback with a new technique. To set the results from the theoretical analysis of different methods into some context, we analyze the attacks that reduce the security and, therefore, the system’s efficiency. Particularly, we discuss various methods for detecting double-spending and eclipse attacks occurrence
Diese Bachelorarbeit befasst sich mit der Herausforderung, kleine Zahlungen effizient mithilfe der Blockchain umsetzen zu können. Dafür werden verschiedene existierende Zahlung-Schemata vorgestellt werden. Sie werden dabei auch auf ihre Eignung im Bezug auf die Anforderungen eines IoT-Gerätes geprüft. Besonderer Fokus wird auf die probabilistischen Zahlungen gelegt.
Abschließend wird die Implementierung eines Prototypen vorgestellt und die Anwendbarkeit eines solchen Systems ausgewertet.