804 research outputs found
Blockchain based efficient and robust fair payment for outsourcing services in cloud computing
AXA Research Fun
Outsourcing service fair payment based on blockchain and its applications in cloud computing
AXA Research Fun
The Strategic Supply Chain Management in the Digital Era, Tactical vs Strategic
The perspective of procurement and supply chain management is changing dramatically; traditionally, it was seen as a support function; however, the procurement function is receiving increased attention and investment as an essential contributor to the strategic success and a business enabler. While an end-to-end digital supply chain is an opportunity as it unleashes the next level of strategic growth and involves minimal investment in infrastructure, it is still a challenge to optimize and transform. Furthermore, the recent pandemics and geopolitical disruptions of Covid-19, the Ukraine-Russian war, Brexit and the US-China trade war; have structurally changed the global economy and revealed a new risk assessment that will result in the re-introduction of buffers, boundaries across industries and a partial return to regionalization with sort of de-globalization in which existing just-in-time getting replaced by just-in-case strategy
Blockchain-based Cloud Data Deduplication Scheme with Fair Incentives
With the rapid development of cloud computing, vast amounts of duplicated
data are being uploaded to the cloud, wasting storage resources. Deduplication
(dedup) is an efficient solution to save storage costs of cloud storage
providers (CSPs) by storing only one copy of the uploaded data. However, cloud
users do not benefit directly from dedup and may be reluctant to dedup their
data. To motivate the cloud users towards dedup, CSPs offer incentives on
storage fees. The problems with the existing dedup schemes are that they do not
consider: (1) correctness - the incentive offered to a cloud user should be
computed correctly without any prejudice. (2) fairness - the cloud user
receives the file link and access rights of the uploaded data if and only if
the CSP receives the storage fee. Meeting these requirements without a trusted
party is non-trivial, and most of the existing dedup schemes do not apply.
Another drawback is that most of the existing schemes emphasize incentives to
cloud users but failed to provide a reliable incentive mechanism.
As public Blockchain networks emulate the properties of trusted parties, in
this paper, we propose a new Blockchain-based dedup scheme to meet the above
requirements. In our scheme, a smart contract computes the incentives on
storage fee, and the fairness rules are encoded into the smart contract for
facilitating fair payments between the CSPs and cloud users. We prove the
correctness and fairness of the proposed scheme. We also design a new incentive
mechanism and show that the scheme is individually rational and incentive
compatible. Furthermore, we conduct experiments by implementing the designed
smart contract on Ethereum local Blockchain network and list the transactional
and financial costs of interacting with the designed smart contract
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