TY  - CHAP
U1  - Konferenzveröffentlichung
A1  - Schaad, Andreas
A1  - Grohmann, Björn
A1  - Winzenried, Oliver
A1  - Brasser, Ferdinand
A1  - Sadeghi, Ahmad
T1  - Towards a Cloud-based System for Software Protection and Licensing
T2  - Proceedings of the 15th International Joint Conference on e-Business and Telecommunications. Volume 1: SECRYPT
KW  - cloud security
Y1  - 2018
SN  - 978-989-758-319-3
SB  - 978-989-758-319-3
U6  - https://dx.doi.org/10.5220/0006899506980702
DO  - https://dx.doi.org/10.5220/0006899506980702
VL  - 1
SP  - 698
EP  - 702
S1  - 5
ER  - 
TY  - CHAP
U1  - Konferenzveröffentlichung
A1  - Schaad, Andreas
A1  - Reski, Tobias
A1  - Winzenried, Oliver
T1  - Integration of a Secure Physical Element as a Trusted Oracle in a Hyperledger Blockchain
T2  - Proceedings of the 16th International Joint Conference on e-Business and Telecommunications, Prague, Czech Republic - Volume 2: SECRYPT
N2  - 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.
KW  - Software Protection
KW  - Blockchain
KW  - Hyperledger
KW  - Data Integrity
Y1  - 2019
SN  - 978-989-758-378-0
SB  - 978-989-758-378-0
U6  - https://dx.doi.org/10.5220/0007957104980503
DO  - https://dx.doi.org/10.5220/0007957104980503
VL  - 2
SP  - 498
EP  - 503
S1  - 6
ER  - 
TY  - CHAP
U1  - Konferenzveröffentlichung
A1  - Schaad, Andreas
A1  - Grohmann, Björn
A1  - Winzenried, Oliver
T1  - CloudProtect - A Cloud-based Software Protection Service
T2  - Proceedings of the 24th ACM Symposium on Access Control Models and Technologies, SACMAT 2019, Toronto, ON, Canada, June 03-06, 2019
N2  - Protecting software from illegal access, intentional modification or reverse engineering is an inherently difficult practical problem involving code obfuscation techniques and real-time cryptographic protection of code. In traditional systems a secure element (the "dongle") is used to protect software. However, this approach suffers from several technical and economical drawbacks such as the dongle being lost or broken.

We present a system that provides such dongles as a cloud service, and more importantly, provides the required cryptographic material to control access to software functionality in real-time.

This system is developed as part of an ongoing nationally funded research project and is now entering a first trial stage with stakeholders from different industrial sectors.
Y1  - 2019
SN  - 978-1-4503-6753-0
SB  - 978-1-4503-6753-0
U6  - https://dx.doi.org/10.1145/3322431.3326447
DO  - https://dx.doi.org/10.1145/3322431.3326447
SP  - 219
EP  - 221
S1  - 3
ER  -