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Authors: Borting Chen 1 ; Mesut Güneş 2 and Yu-Lun Huang 3

Affiliations: 1 National Chiao Tung University and University of Münster, Taiwan ; 2 University of Münster, Germany ; 3 National Chiao Tung University, Taiwan

ISBN: 978-989-758-183-0

Keyword(s): Capability-Based Access Control, Internet of Things, Network Security.

Abstract: Access control is critical for many applications of the Internet of Things (IoT) since the owner of an IoT device (and application) may only permit one user to access a subset of the resources of the device. To provide access control for an IoT network, recent work adopted the capability-based access control (CBAC) model, which allows an IoT device to decide on the authorization by itself based on a capability token. However, the existing approaches based on CBAC directly attach the capability token at the end of CoAP when sending a request message. For the receiver, it is not easy to retrieve the capability token from the request message if the CoAP payload is present, because CoAP does not have a length field to indicate the size of its payload. To counter this problem, we propose a CoAP option, Cap-Token, to encapsulate a capability token when sending request messages. Because a CoAP option is independent from other CoAP fields, a receiver can get the capability token from the Cap- Token option of the request message without ambiguity. We also provide a compression mechanism to reduce the size of the Cap-Token option. Our evaluation shows that the compression mechanism can save the size of the option by 60%. Adding a compressed Cap-Token option to a request message increases the IP datagram size by 45 bytes, which is only 41% of the increase when directly attaching the capability token at the end of CoAP. (More)

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Paper citation in several formats:
Chen B., Güneş M. and Huang Y. (2016). CoAP Option for Capability-Based Access Control for IoT-Applications.In Proceedings of the International Conference on Internet of Things and Big Data - Volume 1: IoTBD, ISBN 978-989-758-183-0, pages 266-274. DOI: 10.5220/0005950902660274

@conference{iotbd16,
author={Borting Chen and Mesut Güneş and Yu{-}Lun Huang},
title={CoAP Option for Capability-Based Access Control for IoT-Applications},
booktitle={Proceedings of the International Conference on Internet of Things and Big Data - Volume 1: IoTBD,},
year={2016},
pages={266-274},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005950902660274},
isbn={978-989-758-183-0},
}

TY - CONF

JO - Proceedings of the International Conference on Internet of Things and Big Data - Volume 1: IoTBD,
TI - CoAP Option for Capability-Based Access Control for IoT-Applications
SN - 978-989-758-183-0
AU - Chen B.
AU - Güneş M.
AU - Huang Y.
PY - 2016
SP - 266
EP - 274
DO - 10.5220/0005950902660274

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