Paper 2024/382

Decentralized Access Control Infrastructure for Enterprise Digital Asset Management

Chirag Madaan
Rohan Agarwal
Vipul Saini
Ujjwal Kumar
Abstract

With the rapidly evolving landscape of cryptography, blockchain technology has advanced to cater to diverse user requirements, leading to the emergence of a multi-chain ecosystem featuring various use cases characterized by distinct transaction speed and decentralization trade-offs. At the heart of this evolution lies digital signature schemes, responsible for safeguarding blockchain-based assets such as ECDSA, Schnorr, and EdDSA, among others. However, a critical gap exists in the current landscape — there is no solution empowering a consortium of entities to collectively manage or generate digital signatures for diverse digital assets in a distributed manner with dynamic threshold settings, all while mitigating counter-party risks. Existing threshold signature schemes impose a fixed threshold during the key generation phase, limiting the adaptability of threshold settings for the subsequent signature phase. Attempts to address this challenge often involve relinquishing signature generation control either partially or entirely from the participating parties, introducing vulnerabilities that could jeopardize digital assets in the event of network disruptions. Addressing this gap, our work introduces an innovative infrastructure that allows a group of users to programmatically define and manage access control policies, supported by a blockchain network dedicated to policy enforcement. This network is uniquely designed to prevent any entity, including itself, from autonomously generating digital signatures, thereby mitigating counter-party risks and enhancing asset security. This system is particularly suited for enterprise contexts, where collaborative asset oversight and policy adherence are essential. Our solution marks a significant stride in the realm of blockchain technology, paving the way for more sophisticated and secure digital asset management in a rapidly evolving digital landscape.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Preprint.
Keywords
Linearly Homomorphic EncryptionClass GroupsThreshold Signature SchemesBlockchainMPC
Contact author(s)
chirag @ cypherock com
rohan @ cypherock com
vipul @ cypherock com
ujjwal @ cypherock com
History
2024-03-04: approved
2024-03-01: received
See all versions
Short URL
https://ia.cr/2024/382
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2024/382,
      author = {Chirag Madaan and Rohan Agarwal and Vipul Saini and Ujjwal Kumar},
      title = {Decentralized Access Control Infrastructure for Enterprise Digital Asset Management},
      howpublished = {Cryptology {ePrint} Archive, Paper 2024/382},
      year = {2024},
      url = {https://eprint.iacr.org/2024/382}
}
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