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Authors: Sara Foresti and Giovanni Livraga

Affiliation: Computer Science Department, Università Degli Studi di Milano, Via Celoria 18, Milano, Italy

Keyword(s): Digital Data Market, Selective Encryption, Key Derivation.

Abstract: The combined adoption of selective encryption and smart contracts deployed on blockchains allows data owners to maintain control over their data when traded on digital data market platforms. Selective encryption, combined with key derivation techniques, guarantees that only customers who are entitled to access a resource can read its content. The adoption of smart contracts deployed on a blockchain permits to regulate the interplay among parties, the possible economic incentives to be paid to the owners, and the exchange of the information necessary for resource decryption (i.e., updates to the key derivation structure) upon payment. However, operations on blockchains have a cost. In this paper, we propose two approaches for updating the key derivation structure to enable customers to access resources, while limiting access times to resources and the cost of write operations on the blockchain to enforce purchases.

CC BY-NC-ND 4.0

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Paper citation in several formats:
Foresti, S. and Livraga, G. (2021). Selective Owner-side Encryption in Digital Data Markets: Strategies for Key Derivation. In Proceedings of the 18th International Conference on Security and Cryptography - SECRYPT; ISBN 978-989-758-524-1; ISSN 2184-7711, SciTePress, pages 620-627. DOI: 10.5220/0010603506200627

@conference{secrypt21,
author={Sara Foresti. and Giovanni Livraga.},
title={Selective Owner-side Encryption in Digital Data Markets: Strategies for Key Derivation},
booktitle={Proceedings of the 18th International Conference on Security and Cryptography - SECRYPT},
year={2021},
pages={620-627},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010603506200627},
isbn={978-989-758-524-1},
issn={2184-7711},
}

TY - CONF

JO - Proceedings of the 18th International Conference on Security and Cryptography - SECRYPT
TI - Selective Owner-side Encryption in Digital Data Markets: Strategies for Key Derivation
SN - 978-989-758-524-1
IS - 2184-7711
AU - Foresti, S.
AU - Livraga, G.
PY - 2021
SP - 620
EP - 627
DO - 10.5220/0010603506200627
PB - SciTePress

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