Integration of a Secure Physical Element as a Trusted Oracle in a Hyperledger Blockchain

Andreas Schaad, Tobias Reski, Oliver Winzenried

2019

Abstract

Blockchain frameworks enable the immutable storage of data. A still open practical question is the so called “oracle” problem, i.e. the way how real world data is actually transferred into and out of a blockchain while preserving its integrity. We present a case study that demonstrates how to use an existing industrial strength secure element for cryptographic software protection (Wibu CmDongle / the “dongle”) to function as such a hardware-based oracle for the Hyperledger blockchain framework. Our scenario is that of a dentist having leased a 3D printer. This printer is initially supplied with an amount of x printing units. With each print action the local unit counter on the attached dongle is decreased and in parallel a unit counter is maintained in the Hyperledger-based blockchain. Once a threshold is met, the printer will stop working (by means of the cryptographically protected invocation of the local print method). The blockchain is configured in such a way that chaincode is executed to increase the units again automatically (and essentially trigger any payment processes). Once this has happened, the new unit counter value will be passed from the blockchain to the local dongle and thus allow for further execution of print jobs.

Paper Citation

in Harvard Style

Schaad A., Reski T. and Winzenried O. (2019). Integration of a Secure Physical Element as a Trusted Oracle in a Hyperledger Blockchain.In Proceedings of the 16th International Joint Conference on e-Business and Telecommunications - Volume 2: SECRYPT, ISBN 978-989-758-378-0, pages 498-503. DOI: 10.5220/0007957104980503

in Bibtex Style

@conference{secrypt19,
author={Andreas Schaad and Tobias Reski and Oliver Winzenried},
title={Integration of a Secure Physical Element as a Trusted Oracle in a Hyperledger Blockchain},
booktitle={Proceedings of the 16th International Joint Conference on e-Business and Telecommunications - Volume 2: SECRYPT,},
year={2019},
pages={498-503},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007957104980503},
isbn={978-989-758-378-0},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 16th International Joint Conference on e-Business and Telecommunications - Volume 2: SECRYPT,
TI - Integration of a Secure Physical Element as a Trusted Oracle in a Hyperledger Blockchain
SN - 978-989-758-378-0
AU - Schaad A.
AU - Reski T.
AU - Winzenried O.
PY - 2019
SP - 498
EP - 503
DO - 10.5220/0007957104980503