Performance of Hash Functions in Blockchain Applied to IoT Devices

Ferreira, Jessica; Antunes, Mário; Zhygulskyy, Mykyta; Frazão, Luís

doi:10.23919/cisti.2019.8760885

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…Their comprehensive analysis results based on the key size, key generation performance and signature verification performance show that the ECC algorithm (adopted by Bitcoin and Ethereum) outperforms RSA in general. This study also points out that ECC satisfies the security needs of blockchain better than RSA.More recently, Ferreira et al[92] conducted a study on Blockchain-based IoT (BIoT)[93] to explore the performance of hash function in blockchains. Particularly, authors developed a blockchain in an IoT scenario to evaluate the performance of different cryptographic hash functions such as MD5, SHA-1, SHA-224, SHA-384 and SHA-512.…”

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confidence: 75%

Performance Evaluation of Blockchain Systems: A Systematic Survey

et al. 2020

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Blockchain has been envisioned to be a disruptive technology with potential for applications in various industries. As more and more different blockchain platforms have emerged, it is essential to assess their performance in different use cases and scenarios. In this paper, we conduct a systematic survey on the blockchain performance evaluation by categorizing all reviewed solutions into two general categories, namely, empirical analysis and analytical modelling. In the empirical analysis, we comparatively review the current empirical blockchain evaluation methodologies, including benchmarking, monitoring, experimental analysis and simulation. In analytical modelling, we investigate the stochastic models applied to performance evaluation of mainstream blockchain consensus algorithms. Through contrasting, comparison and grouping different methods together, we extract important criteria that can be used for selecting the most suitable evaluation technique for optimizing the performance of blockchain systems based on their identified bottlenecks. Finally, we conclude the survey by presenting a list of possible directions for future research.

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confidence: 75%

Performance Evaluation of Blockchain Systems: A Systematic Survey

et al. 2020

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“…From the eighth week, it propagates wrong information to the other miners and the emitting enterprises, and behaves maliciously to attack the blockchain. [20,30] The RoM of the malicious miner at the end of each week is found in Fig. 9.…”

Section: Numerical Simulationmentioning

confidence: 99%

“…Also, the blockchain approach uses public pseudonymous address and encrypted signatures to ensure anonymity [18][19]. Third, we can trace the contracts of the participants and prevent the trade data from being maliciously monitored and alternated by adopting high-end digital signatures and hash algorithms [20]. Fourth, a consensus mechanism can realize transactions verification and confirmation with reduced latency [21], and avoid faulty information being disseminated [22].…”

Section: Introductionmentioning

confidence: 99%

Delegated Proof of Reputation Consensus Mechanism for Blockchain-Enabled Distributed Carbon Emission Trading System

Rao

et al. 2020

IEEE Access

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Most carbon Emission Trading Systems (ETS) rely on a centralized system to manage the transactional tasks, and are vulnerable to security threats. This paper proposes a Blockchain-enabled Distributed ETS (BD-ETS) to improve the security and efficiency of the system. The BD-ETS transforms the centralized Carbon Emissions Permit (CEP) trading mode to a distributed trading system in which the trading mode is based on a smart contract performed in Hyperledger Fabric. In a smart contract, every transaction considers both the offer price and reputation value of the emitting enterprises. The voting power of the emitting enterprise is determined by its reputation value, which stems from their contributions to carbon emission reduction. To achieve consistency of every node in the CEP transactions, we propose a Delegated Proof of Reputation (DPoR) consensus mechanism. Compared to the enhanced Delegated Proof of Stake, the DPoR decreases the attack intention of malicious enterprises and performs better in finding malicious miners faster, thus improving the security of the BD-ETS. A case study and numerical simulations are developed to illustrate how the CEP trading functions, and to validate the DPoR mechanism.

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Design of Hash Algorithm for Blockchain Security

Davda

2022

Blockchain Applications in Cryptocurrency for Technological Evolution

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Blockchain is the invention that permits digitally generated information to be allocated without being copied. Blockchain technology is the heart of the new internet (i.e., virtual currency). Emerging clever settlement structures over decentralized cryptocurrencies permit jointly suspicious events to transact competently without relying on third parties (i.e., the reason to provide wide security to blockchain technology). Cryptography has so many algorithms to provide security such as MD5, AES, RSA, SHA family, etc. Hash functions are extremely useful and appear in almost all information security applications, so hashing techniques are more secure among them. The authors are designing a new approach (i.e., SHA-512) in a local blockchain application. SHA-512 is a very secure algorithm that uses 64-bit words and operates on 1024-bit blocks. They are proving that SHA-512 is more collision-resistant than its predecessor with a few mathematical models.

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Performance of Hash Functions in Blockchain Applied to IoT Devices

Cited by 3 publications

References 2 publications

Performance Evaluation of Blockchain Systems: A Systematic Survey

Performance Evaluation of Blockchain Systems: A Systematic Survey

Delegated Proof of Reputation Consensus Mechanism for Blockchain-Enabled Distributed Carbon Emission Trading System

Design of Hash Algorithm for Blockchain Security

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