9,555 research outputs found
Secure Geographic Routing in Ad Hoc and Wireless Sensor Networks
Security in sensor networks is one of the most relevant research topics in resource constrained wireless devices and networks. Several attacks can be suffered in ad hoc and wireless sensor networks (WSN), which are highly susceptible to attacks, due to the limited resources of the nodes. In this paper, we propose innovative and lightweight localization techniques that allow for intrusion identification and isolation schemes and provide accurate location information. This information is used by our routing protocol which additionally incorporates a distributed trust model to prevent several routing attacks to the network. We finally evaluate our algorithms for accurate localization and for secure routing which have been implemented and tested in real ad hoc and wireless sensor networks
Demo Abstract: Securing Communication in 6LoWPAN with Compressed IPsec
With the inception of IPv6 it is possible to assign
a unique ID to each device on planet. Recently, wireless sensor
networks and traditional IP networks are more tightly integrated
using IPv6 and 6LoWPAN. Real-world deployments of WSN
demand secure communication. The receiver should be able to
verify that sensor data is generated by trusted nodes and/or
it may also be necessary to encrypt sensor data in transit.
Available IPv6 protocol stacks can use IPsec to secure data
exchanges. Thus, it is desirable to extend 6LoWPAN such that
IPsec communication with IPv6 nodes is possible. It is beneficial
to use IPsec because the existing end-points on the Internet do
not need to be modified to communicate securely with the WSN.
Moreover, using IPsec, true end-to-end security is implemented
and the need for a trustworthy gateway is removed.
In this demo we will show the usage of our implemented
lightweight IPsec. We will show how IPsec ensures end-to-end
security between an IP enabled sensor networks and the
traditional Internet. This is the first compressed lightweight
design, implementation, and evaluation of a 6LoWPAN extension
for IPsec. This demo complements the full paper that will appear
in the parent conference, DCOSS’11
Securing Internet of Things with Lightweight IPsec
Real-world deployments of wireless sensor networks (WSNs) require
secure communication. It is important that a receiver is able to verify that sensor
data was generated by trusted nodes. In some cases it may also be necessary
to encrypt sensor data in transit. Recently, WSNs and traditional IP networks
are more tightly integrated using IPv6 and 6LoWPAN. Available IPv6 protocol
stacks can use IPsec to secure data exchange. Thus, it is desirable to extend
6LoWPAN such that IPsec communication with IPv6 nodes is possible. It is
beneficial to use IPsec because the existing end-points on the Internet do not
need to be modified to communicate securely with the WSN. Moreover, using
IPsec, true end-to-end security is implemented and the need for a trustworthy
gateway is removed.
In this paper we provide End-to-End (E2E) secure communication between
an IP enabled sensor nodes and a device on traditional Internet. This is the
first compressed lightweight design, implementation, and evaluation of 6LoWPAN
extension for IPsec on Contiki. Our extension supports both IPsec's Authentication
Header (AH) and Encapsulation Security Payload (ESP). Thus,
communication endpoints are able to authenticate, encrypt and check the integrity
of messages using standardized and established IPv6 mechanisms
Lightweight Three-Factor Authentication and Key Agreement Protocol for Internet-Integrated Wireless Sensor Networks
Wireless sensor networks (WSNs) will be integrated into the future Internet as one of the components of the Internet of Things, and will become globally addressable by any entity connected to the Internet. Despite the great potential of this integration, it also brings new threats, such as the exposure of sensor nodes to attacks originating from the Internet. In this context, lightweight authentication and key agreement protocols must be in place to enable end-to-end secure communication. Recently, Amin et al. proposed a three-factor mutual authentication protocol for WSNs. However, we identified several flaws in their protocol. We found that their protocol suffers from smart card loss attack where the user identity and password can be guessed using offline brute force techniques. Moreover, the protocol suffers from known session-specific temporary information attack, which leads to the disclosure of session keys in other sessions. Furthermore, the protocol is vulnerable to tracking attack and fails to fulfill user untraceability. To address these deficiencies, we present a lightweight and secure user authentication protocol based on the Rabin cryptosystem, which has the characteristic of computational asymmetry. We conduct a formal verification of our proposed protocol using ProVerif in order to demonstrate that our scheme fulfills the required security properties. We also present a comprehensive heuristic security analysis to show that our protocol is secure against all the possible attacks and provides the desired security features. The results we obtained show that our new protocol is a secure and lightweight solution for authentication and key agreement for Internet-integrated WSNs
Lightweight authentication for recovery in wireless sensor networks
Wireless sensor networks (WSNs) suffer from a wide range of security attacks due to their limited processing and energy capabilities. Their use in numerous mission critical applications, however, requires that fast recovery from such attacks be achieved. Much research has been completed on detection of security attacks, while very little attention has been paid to recovery from an attack. In this paper, we propose a novel, lightweight authentication protocol that can secure network and node recovery operations such as re-clustering and reprogramming. Our protocol is based on hash functions and we compare the performance of two well-known lightweight hash functions, SHA-1 and Rabin. We demonstrate that our authentication protocol can be implemented efficiently on a sensor network test-bed with TelosB motes. Further, our experimental results show that our protocol is efficient both in terms of computational overhead and execution times which makes it suitable for low resourced sensor devices.<br /
An Authentication Protocol for Future Sensor Networks
Authentication is one of the essential security services in Wireless Sensor
Networks (WSNs) for ensuring secure data sessions. Sensor node authentication
ensures the confidentiality and validity of data collected by the sensor node,
whereas user authentication guarantees that only legitimate users can access
the sensor data. In a mobile WSN, sensor and user nodes move across the network
and exchange data with multiple nodes, thus experiencing the authentication
process multiple times. The integration of WSNs with Internet of Things (IoT)
brings forth a new kind of WSN architecture along with stricter security
requirements; for instance, a sensor node or a user node may need to establish
multiple concurrent secure data sessions. With concurrent data sessions, the
frequency of the re-authentication process increases in proportion to the
number of concurrent connections, which makes the security issue even more
challenging. The currently available authentication protocols were designed for
the autonomous WSN and do not account for the above requirements. In this
paper, we present a novel, lightweight and efficient key exchange and
authentication protocol suite called the Secure Mobile Sensor Network (SMSN)
Authentication Protocol. In the SMSN a mobile node goes through an initial
authentication procedure and receives a re-authentication ticket from the base
station. Later a mobile node can use this re-authentication ticket when
establishing multiple data exchange sessions and/or when moving across the
network. This scheme reduces the communication and computational complexity of
the authentication process. We proved the strength of our protocol with
rigorous security analysis and simulated the SMSN and previously proposed
schemes in an automated protocol verifier tool. Finally, we compared the
computational complexity and communication cost against well-known
authentication protocols.Comment: This article is accepted for the publication in "Sensors" journal. 29
pages, 15 figure
Managed ecosystems of networked objects
Small embedded devices such as sensors and actuators will become the cornerstone of the Future Internet. To this end, generic, open and secure communication and service platforms are needed in order to be able to exploit the new business opportunities these devices bring. In this paper, we evaluate the current efforts to integrate sensors and actuators into the Internet and identify the limitations at the level of cooperation of these Internet-connected objects and the possible intelligence at the end points. As a solution, we propose the concept of Managed Ecosystem of Networked Objects, which aims to create a smart network architecture for groups of Internet-connected objects by combining network virtualization and clean-slate end-to-end protocol design. The concept maps to many real-life scenarios and should empower application developers to use sensor data in an easy and natural way. At the same time, the concept introduces many new challenging research problems, but their realization could offer a meaningful contribution to the realization of the Internet of Things
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