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نتیجه جستجو - طرح های اصلی توزیع مجدد

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1 A class of key-node indexed hash chains based key predistribution (KPS): Signed weighted graphs
طبقه ای از توزیع مجدد کلید های زنجیره ای هش دارای گره کلید (KPS): گراف های وزن دهی شده امضا شده-2019
Key management solutions are cornerstone requirements for any security service. Due to resource limi- tations, public key cryptographic (PKC) solutions are unsuitable for IoT devices like sensors of WSN. Con- sequently we opt for key predistribution schemes (KPS) to preload lightweight symmetric cryptographic keys and later establish them. KPS are designed over random and/or combinatorial graphs and requires several devices to share individual keys (conventionally r many). This causes a dip in the resultant sys- tem’s resilience. Cicho ´n et al. [10] introduces a technique that involve recursive use of a one-way function to distinguish each key’s cycle and improve the given system’s resilience. Bechkit et al. [2,3] considers a cryptographic hash function to form their hash chains (KPS) , i.e., HC ( x ) for a given KPS x . They construct hash chains according to node identifiers (ids) and consider modulo n, (n ∈ Z + ) to reduce hash chains. This paper uses signed weighted graph (SWG) to conceal node ids in the key sharing graph of the under- lying KPS x during short-lived key establishment phase (KEP). The concealment of information permits distinct indexing of each sensor according their position in the cycles of preloaded keys. Resultant sys- tem remains distributed with improved resilience and is independent of other parameters. In this way, a new class of KPS, named as key-node indexed hash chains (KPS) , i.e., KNIHC ( x ) for the selected KPS x is proposed. It eliminates smart attack (SA). Moreover being fully connected (due to choice of underlying KPS), the proposed system supports mobility..
Keywords: Key predistribution schemes | Ad hoc networks | Hash chains
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