Anonymity in Complex Transactions for e-Business

Bîrjoveanu, Cătălin V.; Bîrjoveanu, Mirela

doi:10.1007/978-3-030-34866-3_2

Cited by 1 publication

(1 citation statement)

References 14 publications

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“…They achieve this by introducing an online TTP that validates coins and guarantees fairness. Later they proposed many extensions to the protocol, namely in [13] they proposed an anonymous e-commerce protocol that governs complex transactions, in [14] they extend anonymity for both buyers and sellers (in our case SPs), and in [15] they proposed a protocol that supports chained transactions (involving multiple active intermediaries). Finally, in [17] they proposed an improved protocol called PPPDCP (Protocol with Physical Product Delivery Providing Customer's Privacy).…”

Section: Fair Exchange Anonymity Dispute Resolution and Physical Prod...mentioning

confidence: 99%

Anonymous provision of privacy-sensitive services using blockchain and decentralised storage

Barański

Szymański

Mora

2023

Preprint

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Lawyers, laboratories, auditors or banks often need data containing sensitive personal information to provide their services. Examples of sensitive services include genetic testing, paternity testing, STD testing, credit scoring or legal advice. The processing of personal data, especially when providing services involving sensitive data such as health records, biological material or legal documents, exposes both users and service providers (SPs) to privacy risks. SPs are at risk of violating GDPR, CPAA and other legal regulations, while customers are at risk of losing their privacy. We observe that personal data is often only used for logistical purposes, such as payment or communication, and could be provided anonymously if such methods were available. We present a solution that allows services to be provided without collecting personal data. We use anonymous payment methods such as cash and anonymous cryptocurrencies, blockchain to achieve fairness, and distributed content-addressable storage networks to deliver results. Compared to other solutions, our protocol achieves anonymity with weaker assumptions, supports physical materials and conflict resolution, and does not require the customer to interact with the blockchain in conflict-free transactions, demonstrating better practicality. In this work, we analyse the fairness of our protocol and implement it using Ethereum technology as a message board, Monero as an anonymous payment method, and Powergate (IPFS and Filecoin) as a decentralised storage network.

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