Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Identity Based Key Management Scheme in Wireless Sensor Networks   Pairwise key establishment is one of the fundamental security services in
sensor networks which enables sensor nodes in a sensor network to communicate
securely with each other using cryptographic techniques. It is not feasible to
apply traditional public key management techniques in resource-constrained
sensor nodes, and also because the sensor nodes are vulnerable to physical
capture. In this paper, we introduce a new scheme called the identity based key
pre-distribution using a pseudo random function (IBPRF), which has better
trade-off between communication overhead, network connectivity and resilience
against node capture compared to the other key pre-distribution schemes. Our
scheme can be easily adapted in mobile sensor networks. This scheme supports
the addition of new sensor nodes after the initial deployment and also works
for any deployment topology. In addition, we propose an improved version of our
scheme to support large sensor networks.

11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th