Sark: Oblivious Integrity Without Global State
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866914490509950976 |
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| author | Lynham, Alex Alesch, David Li, Ziyi Goodell, Geoff |
| author_facet | Lynham, Alex Alesch, David Li, Ziyi Goodell, Geoff |
| contents | In this paper, we introduce Sark, a reference architecture for transferring unforgeable, stateful, oblivious (USO) assets. We describe the motivation, design, and implementation of the core subsystems of Sark, Porters, which accumulate and roll-up commitments from Clients, and Sloop, a permissioned, crash fault-tolerant (CFT) blockchain system. We analyse the operation of the system using the `CIA Triad': Confidentiality, Availability, and Integrity. We then introduce the concept of \textit{local centrality} and use it to address design trade-offs related to decentralization. Finally, we point to future work on Byzantine fault-tolerance (BFT), and mitigating the local centrality of Porters. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_20775 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Sark: Oblivious Integrity Without Global State Lynham, Alex Alesch, David Li, Ziyi Goodell, Geoff Cryptography and Security Computers and Society In this paper, we introduce Sark, a reference architecture for transferring unforgeable, stateful, oblivious (USO) assets. We describe the motivation, design, and implementation of the core subsystems of Sark, Porters, which accumulate and roll-up commitments from Clients, and Sloop, a permissioned, crash fault-tolerant (CFT) blockchain system. We analyse the operation of the system using the `CIA Triad': Confidentiality, Availability, and Integrity. We then introduce the concept of \textit{local centrality} and use it to address design trade-offs related to decentralization. Finally, we point to future work on Byzantine fault-tolerance (BFT), and mitigating the local centrality of Porters. |
| title | Sark: Oblivious Integrity Without Global State |
| topic | Cryptography and Security Computers and Society |
| url | https://arxiv.org/abs/2512.20775 |