The proliferation of Internet of Things(IoT)devices that operate unattended providing a multitude of important and often sensitive services highlights the need for seamless interoperability and increased security.We a...The proliferation of Internet of Things(IoT)devices that operate unattended providing a multitude of important and often sensitive services highlights the need for seamless interoperability and increased security.We argue that digital twins of IoT devices,with the right design,can enhance the security,reliability,auditability,and interoperability of IoT systems.The salient features of digital twins have made them key elements for the IoT and Industry 4.0.In this paper,we leverage advances in W3C’s Web of Things(WoT)standards and distributed ledger technologies(DLTs)to present a novel design of the smart contract-based digital twins with enhanced security,transparency,interoperability,and reliability.We provide two different variations of that general design using two different blockchains(one public and one private,permissioned blockchain),and we present design trade-offs.Furthermore,we introduce an architecture for accessing and controlling IoT devices securely and reliably,providing full auditability,while at the same time using the proposed digital twins as an indirection mechanism(proxy).The proposed architecture leverages the blockchain to offer notable properties,namely,decentralization,immutability,auditability,non-repudiation,availability,and reliability.Moreover,it introduces mass actuation,easier management of IoT devices,and enhanced security to the IoT gateways,enables new business models,and makes consumer devices(vendor-)agnostic.展开更多
Service providers usually require detailed statistics in order to improve their services.On the other hand,privacy concerns are intensifying and sensitive data is protected by legislation,such as GDPR(General Data Pro...Service providers usually require detailed statistics in order to improve their services.On the other hand,privacy concerns are intensifying and sensitive data is protected by legislation,such as GDPR(General Data Protection Regulation).In this paper,we present the design,implementation,and evaluation of a marketplace that allows“data consumers”to buy information from“data providers”,which can then be used for generating meaningful statistics.Additionally,our system enables“system operators”that can select which data providers are allowed to provide data,based on filtering criteria specified by the data consumer.We leverage local differential privacy to protect the data provider's privacy against data consumers,as well as against system operators,and we build a blockchain-based solution for ensuring fair exchange,and immutable data logs.Our design targets use cases that involve hundreds or even thousands of data providers.We prove the feasibility of our approach through a proof-of concept implementation of a measurement sharing application for smart-grid systems.展开更多
文摘The proliferation of Internet of Things(IoT)devices that operate unattended providing a multitude of important and often sensitive services highlights the need for seamless interoperability and increased security.We argue that digital twins of IoT devices,with the right design,can enhance the security,reliability,auditability,and interoperability of IoT systems.The salient features of digital twins have made them key elements for the IoT and Industry 4.0.In this paper,we leverage advances in W3C’s Web of Things(WoT)standards and distributed ledger technologies(DLTs)to present a novel design of the smart contract-based digital twins with enhanced security,transparency,interoperability,and reliability.We provide two different variations of that general design using two different blockchains(one public and one private,permissioned blockchain),and we present design trade-offs.Furthermore,we introduce an architecture for accessing and controlling IoT devices securely and reliably,providing full auditability,while at the same time using the proposed digital twins as an indirection mechanism(proxy).The proposed architecture leverages the blockchain to offer notable properties,namely,decentralization,immutability,auditability,non-repudiation,availability,and reliability.Moreover,it introduces mass actuation,easier management of IoT devices,and enhanced security to the IoT gateways,enables new business models,and makes consumer devices(vendor-)agnostic.
基金supported by the EU funded Horizon 2020 project SOFIE(Secure Open Federation for Internet Everywhere),under grant agreement No.779984.
文摘Service providers usually require detailed statistics in order to improve their services.On the other hand,privacy concerns are intensifying and sensitive data is protected by legislation,such as GDPR(General Data Protection Regulation).In this paper,we present the design,implementation,and evaluation of a marketplace that allows“data consumers”to buy information from“data providers”,which can then be used for generating meaningful statistics.Additionally,our system enables“system operators”that can select which data providers are allowed to provide data,based on filtering criteria specified by the data consumer.We leverage local differential privacy to protect the data provider's privacy against data consumers,as well as against system operators,and we build a blockchain-based solution for ensuring fair exchange,and immutable data logs.Our design targets use cases that involve hundreds or even thousands of data providers.We prove the feasibility of our approach through a proof-of concept implementation of a measurement sharing application for smart-grid systems.
