A Privacy-Enabled, Blockchain-Based Smart Marketplace

Abstract

Advancements in sensor-enabled devices led to the emergence of resource trading models for smart communities, such as the smart marketplace (SMP). Most of the proposed SMP architectures are based on blockchain technology, which has a public ledger to achieve transparency. Consequently, safeguarding the participant’s anonymity, untraceability, and transactional data privacy during trading becomes a challenging task. Most of the existing solutions to achieve anonymity are based on multiple account mapping, which is prone to identity-based attacks, and cryptographic techniques are used to achieve transactional data privacy, which often has a high computational overhead. In this work, we propose a lightweight privacy-enabled message exchange mechanism to accomplish our privacy goals in a blockchain-based SMP. Evaluation of the scheme was conducted to measure its resilience toward safeguarding participants’ anonymity, untraceability, and transactional data privacy during trading cycles. Statistical game theory-based security analysis and simulation based performance analysis of the proposed scheme showed that it achieved the desired privacy goals with a low computational overhead compared with existing state-of-the-art schemes.

Privacy and Transparency in Blockchain-Based Smart Grid Operations

“…Interesting solutions have been proposed in the context of blockchain-based measurement sharing using smart marketplaces: [23] proposes a system for sharing smart grid measurements while preserving the privacy of the data owners using differential privacy to allow data owners to share their data without revealing too much about themselves. In [24] a lightweight privacyenabled message exchange mechanism is presented and in [25] the technique is extended using a protocol for anonymity and intractability of transaction data with cryptographic Proof-of-Authority, RSA and Chinese reminder threorem.…”

“…Honest but curious aggregator [20] Energy trading Attribute-based encryption Attack on user data confidentiality [21] Energy trading Custom with permutation-substitution public key cryptosystem Attack on user data confidentiality [22] Energy trading Group signature Attack on user data confidentiality [23] Measurement sharing Differential Privacy Attack on user data confidentiality [24] [25] Measurement sharing Cryptographic Proof-of-Authority (PoA), RSA…”

MECAT: Memory-Safe Smart Contracts in ARM TrustZone

“…TEE is a security feature that ensures the confidential execution of sensitive operations, protecting them from unauthorized access even in the presence of a compromised overall system. Thanks to distributed systems, blockchain technology can provide several benefits in IoT networks comprised of embedded devices, such as security, autonomy, resilience, and anonymity [5]- [7]. Furthermore, since blockchain technology is widely adopted for IoT, embedded devices are rising as an important smart contract carrier [8], [9].…”