témavezető: Kocsis Imre
helyszín (magyar oldal): Department of Measurement and Information Systems helyszín rövidítés: MIT
A kutatási téma leírása:
"Service dependability is now a primary consideration in critical application design. For decades, the theory of fault tolerance has identified large centralized systems' fundamental problem, namely that a central control unit, by its very nature, a single point of failure. This is further reinforced by the fact that a control unit may easily become a bottleneck in performance or performance.
Distributed systems offer an alternative to the above problems. The last few years have seen the explosion of blockchain technology, originally inspired by the Bitcoin cryptocurrency. Blockchain has further developed this idea serving as a universal application platform, which, while maintaining strong encryption and non-repudiation, facilitates the operation of multi-party, point-to-point systems even as a cloud-based service.
The various implementations of blockchain incorporate basic data and service security protections, focusing on financial technology. However, it is promising as a universal platform in many other areas, such as smart - * applications, manufacturing processes, and general business-driven and cyber-physical systems. The common challenge for these is to use the underlying mechanisms to ensure the entire system's security and integrity.
The candidate(s) shall have the following tasks:
Investigate how system-level fault tolerance methods, such as Algorithm-based Fault Tolerance (ABFT), can utilize the distributed blockchain architecture for different failure models. In particular, how the transformation of a single physical-cyber world connection (common to CPS systems) into a hierarchical blockchain structure can support modular redundancy and multi-variant programming in an effective and provenly correct way.
One of the key features of blockchain is its non-repudiation, originating in a log-like representation of transactions. It also provides the ability to perform diagnostic tests for hidden operator/data/sensor faults. This, however, raises the scientific challenge that the blockchain mechanism inherently limits observability and controllability. The development of a transaction / client-level diagnostic algorithm could improve these characteristics.
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előírt nyelvtudás: English felvehető hallgatók száma: 1
Jelentkezési határidő: 2021-09-01
2024. IV. 17. ODT ülés Az ODT következő ülésére 2024. június 14-én, pénteken 10.00 órakor kerül sor a Semmelweis Egyetem Szenátusi termében (Bp. Üllői út 26. I. emelet).
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