An Information Aggregation Scheme of Multi-node in Ubiquitous Sensor Networks

Mobile networking, mobile systems and applications and ubiquitous computing infrastructures are of strongly growing importance in the IT sector in general, and for the parallel and distributed computing community. Particularly, when an signed(authenticated) information of multi-node is aggregated in ubiquitous sensor networks, the number of the signing information is very small. Thus, signature scheme which signs information has strong unforgeability. In 2005 Yu and Chen proposed threshold signature scheme [12]. Their scheme has a high efficiency. But, their scheme is not suitable for ubiquitous sensor networks because their scheme has no strong unforgeability. In this paper, we modify their scheme so that modified scheme is suitable for ubiquitous sensor networks. Also, our scheme has a good efficiency, and a smaller secret key than other cryptosystems with a similar security level.

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