Blockchain-based Transparency Framework for Privacy Preserving Third-party Services

Increasingly, information systems rely on computational, storage, and network resources deployed in third-party facilities such as cloud centers edge nodes. Such an approach further exacerbates cybersecurity concerns constantly raised by numerous incidents of security privacy attacks resulting data leakage identity theft, among others. These have, turn, forced the creation stricter privacy-related regulations have eroded trust cyberspace. In particular, security-related services infrastructures, Certificate Authorities (CAs) that provide digital certificate Third-Party (TPAs) cryptographic key services, are critical components for establishing crypto-based privacy-preserving applications services. To address issues, various transparency frameworks approaches been recently proposed literature. This paper proposes TAB framework provides trustworthiness authority using blockchain techniques emerging applications. employs Ethereum underlying public ledger also includes a novel smart contract to automate accountability with incentive mechanism motivates users participate auditing, punishes unintentional or malicious behaviors. We implement show through experimental evaluation official test network, Rinkeby, is efficient. formally guarantee provided TAB, analyze it provides.