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Many applications require reliable and trustful data aggregation in Wireless Sensor Networks (WSNs). In this paper, we propose a new scheme to achieve data privacy and integrity protection in data aggregation for WSNs, called Preserving Privacy and Assuring Integrity (PPAI) scheme. For this, before data transmission, the PPAI scheme blurs the original sampled data of a sensor node by randomly breaking...
Since wireless sensor networks (WSNs) are resources- constrained, it is very essential to gather data efficiently so that the life of the networks can be prolonged. Data aggregation can conserve a significant amount of energy by minimizing the transmission costs in terms of the number of data packets. On the other hand, many applications require privacy of the sampled data protecting their integrity...
Analysis of the generic attacks and countermeasures for block cipher based message authentication code algorithms (MAC) in sensor applications is undertaken; the conclusions are used in the design of two new MAC constructs quicker block chaining MAC1 (QBC-MAC1) and quicker block chaining MAC2 (QBC-MAC2). Using software simulation we show that our new constructs point to improvements in usage of CPU...
In this paper we present a secure broadcast scheme for wireless sensor networks. The proposed scheme provides data confidentiality, data authentication, data integrity, and data freshness with low overhead and simple operation. Since it allows delayed and lost packets, the secure broadcast is supported. Furthermore, it eliminates the requirement of frequent key renewal to overcome a special limitation...
The energy-constrained wireless sensor nodes require the designs of energy-efficient content authentication protocols. In this paper, we combine the approaches of cryptography and content analysis to propose a new light-weight content authentication framework Cobra. In Cobra, only a small fraction of transmitted packets are protected with signatures. The unprotected packets are authenticated using...
In this paper, we present a simple, lightweight, but robust security protocol for resource-constrained communications. This protocol is based on the backward property of RC4 stream cipher and achieves data confidentiality, data authentication, data integrity, and data freshness with low overhead and simple operations. Furthermore, an RC4-based hash function for the generation of message authentication...
In this paper, we propose a new lightweight authenticated encryption mechanism based on Rabbit stream cipher referred to as Rabbit-MAC, for wireless sensor networks (WSNs) that fulfils both requirements of security as well as energy efficiency. Our proposed scheme provides data authentication, confidentiality and integrity in WSNs. We construct a Rabbit based MAC function, which can be used for data...
In-network data aggregation is an essential technique in mission critical wireless sensor networks (WSNs) for achieving effective transmission and hence better power conservation. Common security protocols for aggregated WSNs are either hop-by-hop or end-to-end, each of which has its own encryption schemes considering different security primitives. End-to-end encrypted data aggregation protocols introduce...
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