Blockchain technology, while maturing, is still lacking features that would be considered indispensable in real-world business applications. In particular, the lack of transaction confidentiality in a public blockchain is a challenging problem. In this paper, the concept of aVirtual Private Blockchain (VPBC) is proposed as a mechanism to create a blockchain architecture with properties akin to those of a private blockchain, however leveraging existing public blockchain functionality. A VPBC can be set up between individuals or organisations, does not require any significant administrative maintenance, inherits all the functionality from the public blockchain, and achieves anonymity and transaction confidentiality with respect to any public blockchain node who does not belong to the VPBC. Building on this theoretical concept, it is then shown how the cryptographic technique of secret sharing can be used in order to implement a simple VPBC architecture. A proof-of-concept architecture has been created and early experiments indicatethat the creation of VPBCs for potential real-world applicationscenarios might be feasible.
Mr. Samuel Onalo has a diverse work history. He has a wide range of interests and as result, has worked in different sectors, including Instrumentation Engineering, Logistics and Project Management, Education and Pedagogy Enhancement, Music Technoology, Business Process Management, and Cyber Security Research. He is currently working as a graduate intern with the Technology Enhanced Learning team of the Teaching and Learning Enhancement Department of Kingston University London.
Virtual Private Blockchains: Security Overlays for Permissioned Blokchains - http://www.thinkmind.org/index.php?view=article&articleid=cyber_2020_2_70_80064
https://www.iaria.org/conferences2020/awardsCYBER20/cyber2020_a5.pdf
Miah, Foysal, Onalo, Samuel and Pfluegel, Eckhard (2021) Transforming Higher Education systems architectures through adoption of secure overlay blockchain technologies. In: VIRTUAL 13th International Conference on Global Security, Safety & Sustainability Cyber Security, Privacy and Freedom Protection in the Connected World; 14 - 15 Jan 2021, Newcastle, U.K. (Held online).
Onalo, Samuel, Gc, Deepak and Pfluegel, Eckhard (2020) Virtual private blockchains : security overlays for permissioned blockchains. In: Fifth International Conference on Cyber-Technologies and Cyber-Systems : CYBER 2020; 25 - 29 Oct 2020, Nice, France.
Onalo, Samuel Ebiojo (2023) Virtual private blockchains. (PhD thesis), Kingston University, .
Virtual Private Blockchains: Security Overlays for Permissioned Blokchains - http://www.thinkmind.org/index.php?view=article&articleid=cyber_2020_2_70_80064