Confidential Token-Based License Management
Authors: 
Felix Engelmann, Jan Philip Speichert, Ralf God, 
Frank Kargl, Christoph BöschAuthors Info & Claims
Felix Engelmann, Jan Philip Speichert, Ralf God, Frank Kargl, Christoph BöschAuthors Info & ClaimsPages 39 - 48
Abstract
In a global economy with many competitive participants, licensing and tracking of 3D printed parts is desirable if not mandatory for many use-cases. We investigate a blockchain-based approach, as blockchains provide many attractive features, like decentralized architecture and high security assurances. An often neglected aspect of the product life-cycle management is the confidentiality of transactions to hide valuable business information from competitors. To solve the combined problem of trust and confidentiality, we present a confidential licensing and tracking system which works on any publicly verifiable, token-based blockchain that supports tokens of different types representing licenses or attributes of parts. Together with the secure integration of a unique eID in each part, our system provides an efficient, immutable and authenticated transaction log scalable to thousands of transactions per second. With our confidential Token-Based License Management system (cTLM), large industries such as automotive or aviation can license and trace all parts confidentially.
Supplementary Material
We present a novel confidential token-based license management system. It enables flexible license transfers and tracking of individual manufactured parts. This is especially interesting for additively manufactured spare parts which are equipped with unique identifiers. We build the system on top of a confidential typed-token transaction system achieving high operation throughput.
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Index Terms
- Confidential Token-Based License Management
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Information & Contributors
Information
Published In
November 2021
72 pages
ISBN:9781450384803
DOI:10.1145/3462223
- General Chairs:
- Mark Yampolskiy,
- Yuval Elovici,
- Moti Yung,
- Program Chair:
- Mark Yampolskiy
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Published: 15 November 2021
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- Federal Ministry of Economic Affairs and Energy
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CCS '21
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CCS '21: 2021 ACM SIGSAC Conference on Computer and Communications Security
November 19, 2021
Virtual Event, Republic of Korea
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