Journal
FUTURE GENERATION COMPUTER SYSTEMS-THE INTERNATIONAL JOURNAL OF ESCIENCE
Volume 78, Issue -, Pages 850-858Publisher
ELSEVIER
DOI: 10.1016/j.future.2016.12.016
Keywords
Fog computing; Outsourcing computations; Bitcoin contract; Commitment-based sampling
Categories
Funding
- National Natural Science Foundation of China [61572382, U1405255]
- China 111 Project [B16037]
- National High Technology Research and Development Program (863 Program) of China [2015AA016007]
- Doctoral Fund of Ministry of Education of China [20130203110004]
- Program for New Century Excellent Talents in University [NCET-13-0946]
- Natural Science Basic Research Plan in Shaanxi Province of China [2016JZ021]
- Guangxi Cooperative Innovation Center of cloud computing and Big Data [YD16506]
- CICAEET Fund
- PAPD Fund
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Fog computing can be viewed as an extension of cloud computing that enables transactions and resources at the edge of the network. In the paradigms of fog computing, the fog user (outsourcer) with resource constraint devices can outsource the distributed computation tasks to the untrusted fog nodes (workers) and pays for them. Recently, plenty of research work has been done on fair payments. However, all existing solutions adopt the traditional e-cash system to generate payment token, which needs a trusted authority (i.e. a bank) to prevent double-spending. The bank will become the bottleneck of the payments system. In this paper, we propose a new fair payment scheme for outsourcing computations based on Bitcoin. Due to the advantages of Bitcoin syntax, the users can transact directly without needing a bank. Besides, the proposed construction can guarantee that no matter how a malicious outsourcer behaves, the honest workers will be paid if he completed the computing tasks. (C) 2016 Elsevier B.V. All rights reserved.
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