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A privacy‐preserving Blockchain with fine‐grained access control
Author(s) -
Adams Carlisle
Publication year - 2019
Publication title -
security and privacy
Language(s) - English
Resource type - Journals
ISSN - 2475-6725
DOI - 10.1002/spy2.97
Subject(s) - blockchain , computer science , cryptography , access control , key (lock) , simple (philosophy) , computer security , component (thermodynamics) , biometrics , distributed computing , philosophy , physics , epistemology , thermodynamics
This article proposes a simple, efficient, and easy‐to‐use mechanism to add privacy and fine‐grained access control features to a traditional Blockchain. It uses standard cryptographic algorithms and techniques, along with a novel key derivation algorithm and a fuzzy extractor component (that derives a cryptographic key from a biometric), to make access control functionality very simple for nonexpert users. Such a Blockchain would be suitable for the storage of participant data postings in long‐term–isolated environments.