Integrating Privacy Enhancing Techniques into Blockchains Using Sidechains

Parizi, Reza M.; Homayoun, Sajad; Yazdinejad, Abbas; Dehghantanha, Ali; Choo, Kim‐Kwang Raymond

doi:10.1109/ccece.2019.8861821

Cited by 47 publications

(13 citation statements)

References 20 publications

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“…e probability will be incremented as the number of participants is smaller to 1. Adopting a variant of the TOR and similar to the concept of Mixnet implementation [29], a study [30] introduces an implementation of the Garlic Routing (GOR) on a sidechain in which all transactions created on the main chain are required to route through a sidechain's smart contract mesh in order to conceal creators' identities. e more complexity in sidechain topology, the more often the sender's address is encapsulated and concealed.…”

Section: H[h (A) || H (B)] H [ H (C) || H (D)] H[h[h (A) || H (B)] || H[h (C) || H (D)]mentioning

confidence: 99%

Towards Achieving Personal Privacy Protection and Data Security on Integrated E-Voting Model of Blockchain and Message Queue

Chaisawat

Vorakulpipat

2021

Security and Communication Networks

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The growing number of e-voting applications indicates the need in resolving issues that exist in the traditional election model. By integrating with blockchain technology, we could extend the model’s capabilities by presenting transparency in logic execution and integrity in data storage. Despite these advantages, blockchain brings in new challenges regarding system performance and data privacy. Due to distributed nature of blockchain, any new updating request needs to be reflected in all network’s peers before proceeding to the subsequence requests. This process produces delay and possibility in request rejection due to update conflict. In addition, data removal is no longer feasible since each record is protected by immutable hashed link. To overcome these limitations, the integration model of blockchain and message queue is proposed in this paper. The design addresses security concerns in data exchanging patterns, voter anonymization, and proof of system actor’s legitimacy. Performance tests are conducted on system prototypes which were deployed on two different settings. The result shows that the system can perform well in production environment, and introduction of message queue handling scheme can cope with blockchain’s errors in unexpected scenarios.

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Section: H[h (A) || H (B)] H [ H (C) || H (D)] H[h[h (A) || H (B)] || H[h (C) || H (D)]mentioning

confidence: 99%

Towards Achieving Personal Privacy Protection and Data Security on Integrated E-Voting Model of Blockchain and Message Queue

Chaisawat

Vorakulpipat

2021

Security and Communication Networks

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“…Shared Data Layer: contains the core blockchain and its overlay network. It is still based on the core blockchain protocol but it is used to build networks (called sidechains [36]- [38]) that work in parallel to the mainstream chain to Figure 2. An overview of BAD being used as a tool to avoid known blockchain-based attacks to be repeated over time perform tasks that the mainstream chain cannot solve while still relaying on the same data structures.…”

Section: B Application Stackmentioning

confidence: 99%

BAD: A Blockchain Anomaly Detection Solution

et al. 2020

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Anomaly detection tools play a role of paramount importance in protecting networks and systems from unforeseen attacks, usually by automatically recognizing and filtering out anomalous activities. Over the years, different approaches have been designed, all focused on lowering the false positive rate. However, no proposal has addressed attacks specifically targeting blockchain-based systems. In this paper we present BAD: Blockchain Anomaly Detection. This is the first solution, to the best of our knowledge, that is tailored to detect anomalies in blockchain-based systems. BAD is a complete framework, relying on several components leveraging, at its core, blockchain meta-data in order to collect potentially malicious activities. BAD enjoys some unique features: (i) it is distributed (thus avoiding any central point of failure); (ii) it is tamper-proof (making it impossible for a malicious software to remove or to alter its own traces); (iii) it is trusted (any behavioral data is collected and verified by the majority of the network); and, (iv) it is private (avoiding any third party to collect/analyze/store sensitive information). Our proposal is described in detail and validated via both experimental results and analysis, that highlight the quality and viability of our Blockchain Anomaly Detection solution.

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“…Moreover, the centralized nature of gateway has a risk of one-point failure, which limits its application in the smart community due to the stringent QoS requirement [23]. A sidechain-based routing protection scheme was proposed in order to improve the resistance abilities for the Garlic Routing and Onion Routing frameworks to privacy attacks [24]. With the proposed Garlic Onion Routing technique, the sidechain protected the routing process from inaccurate information uploading and data tampering.…”

Section: Related Solutionsmentioning

confidence: 99%

A Sidechain-Based Decentralized Authentication Scheme via Optimized Two-Way Peg Protocol for Smart Community

Tang

Refaey

et al. 2020

IEEE Open J. Commun. Soc.

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In this work, we propose a novel sidechain structure via an optimized two-way peg protocol for device authentication in the smart community in order to overcome the limitations of existing approaches. The proposed scheme uses private side blockchains to distribute and manage the local registration and authentication processes, in addition to a local mainchain block to circulate the information record with other smart systems. More importantly, we propose the optimized two-way peg protocol in the proposed sidechain system in order to prevent the worthless information injection attack during the authentication information sharing procedure between the main chain and side blockchains. The optimized two-way peg protocol supervises the availability of the required information by dynamically evaluating the trustworthiness of each smart device. The evaluation is based on numerous criteria, such as the authentication method, previous authentication information sharing history, and local authentication results. Consequently, the simulation results prove the superiority of the proposed scheme in terms of reducing authentication time, improving information management efficiency and decreasing storage consumption as compared to existing works, and the applicability and feasibility of the optimized two-way peg protocol have been approved. It is noteworthy that the proposed sidechain-based method shows its superiority in reducing the cost of authentication time compared with the blockchain-based method when using blockchain structure. The reflected savings are 33.33%, 34.29%, and 36.36% when in comparison to the conventional authentication process without applying any additional method, the authentication process using the proposed sidechain based method, and the authentication process using the blockchain based method, respectively.

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Integrating Privacy Enhancing Techniques into Blockchains Using Sidechains

Cited by 47 publications

References 20 publications

Towards Achieving Personal Privacy Protection and Data Security on Integrated E-Voting Model of Blockchain and Message Queue

Towards Achieving Personal Privacy Protection and Data Security on Integrated E-Voting Model of Blockchain and Message Queue

BAD: A Blockchain Anomaly Detection Solution

A Sidechain-Based Decentralized Authentication Scheme via Optimized Two-Way Peg Protocol for Smart Community

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