BDABE - Blockchain-based Distributed Attribute based Encryption

Georg Bramm, Mark Gall, Julian Schütte

2018

Abstract

Attribute Based Encryption (ABE) denotes asymmetric cryptographic schemes where key pairs are created for attribute owners and often applied to realize a fine-grained, cryptographic access control mechanism for outsourced data. Despite the benefits of ABE systems, there are still drawbacks when ABE systems are transformed into real world applications. Mainly, ABE systems suffer from non-efficiency or non-existence of revocation mechanisms and user key coordination problems. By introducing a consensus driven approach, we try to mitigate these issues in distributed systems. In this paper, we propose a collaborative attribute management protocol for Ciphertext-policy attribute-based encryption (CP-ABE) schemes based on our own scheme called a Blockchain-based Distributed Attribute Based Encryption (BDABE) scheme. Our construction realizes distributed issue, storage and revocation of private attribute keys by adding a consensus driven infrastructure, a blockchain. We enhance both security and efficiency of key management in distributed CP-ABE systems for the application of cloud data sharing.

Paper Citation

in Harvard Style

Bramm G., Gall M. and Schütte J. (2018). BDABE - Blockchain-based Distributed Attribute based Encryption.In Proceedings of the 15th International Joint Conference on e-Business and Telecommunications - Volume 1: SECRYPT, ISBN 978-989-758-319-3, pages 99-110. DOI: 10.5220/0006852600990110

in Bibtex Style

@conference{secrypt18,
author={Georg Bramm and Mark Gall and Julian Schütte},
title={BDABE - Blockchain-based Distributed Attribute based Encryption},
booktitle={Proceedings of the 15th International Joint Conference on e-Business and Telecommunications - Volume 1: SECRYPT,},
year={2018},
pages={99-110},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006852600990110},
isbn={978-989-758-319-3},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 15th International Joint Conference on e-Business and Telecommunications - Volume 1: SECRYPT,
TI - BDABE - Blockchain-based Distributed Attribute based Encryption
SN - 978-989-758-319-3
AU - Bramm G.
AU - Gall M.
AU - Schütte J.
PY - 2018
SP - 99
EP - 110
DO - 10.5220/0006852600990110