| Summary: | 碩士 === 中國文化大學 === 資訊工程學系 === 106 === In recent years, cloud manufacturing (CMfg) (i.e., cloud-based manufacturing) has become a hot research topic for smart manufacturing. The concept of CMfg is to encapsulate and virtualize distributed manufacturing resources (both hardware and software) into cloud services (i.e., manufacturing services) that can then be used on-demand over networks to support manufacturing activities, including product design, simulation, testing, and other equipment services (e.g., fault diagnosis, prognosis, and predictive maintenance). A CMfg system can utilize Internet of Things (IoT) to connect production equipment for data collection and transmission and to communicate with cloud services. Because process data are confidential for a factory, how to protect the security of data exchange between a factory and CMfg services is an important issue for smart manufacturing. Thus, this thesis proposes a novel secure data transmission mechanism based on disposable-key data encoding and designs associated coding and decoding algorithms for protecting the security of data transmitted between the factory side and CMfg services. Finally, several experimental tests of transmitting real process data with different sizes from the factory side to a CMfg service are conducted. Testing results validate the effectiveness of the proposed secure data transmission mechanism and demonstrate its performance.
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