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In wireless sensor networks (WSN), message authentication is crucial to prevent false response that may be evoked by a message. There is a need for a strong cryptographic mechanism to mitigate attacks like false message injection and denial of service. Public key cryptography is resource intensive while symmetric key cryptography does not meet the demands of scalability, simultaneous broadcasts from...
In a Wireless Sensor Networks (WSN), nodes observe their environment and forward the sensed data to a sink. Security of the sensor nodes and the sensed data in transit is vital for such networks. Cryptographic techniques can be employed to achieve confidentiality, integrity and other security needs of the network. However, due to resource constraints existing cryptographic mechanisms that need large...
In the case of MIMO systems, coprime factorizations are usually obtained by using the state-space approach [3] which leads to factorizations of higher McMillan degree than necessary. In the present paper, we utilize the geometric factorization theory of BGK [2] to propose a procedure for obtaining coprime factorizations which have minimal McMillan degree.
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