Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constrained Function Based En-Route Filtering for Sensor Networks   Sensor networks are vulnerable to \emph{false data injection attack} and
\emph{path-based DoS} (PDoS) attack. While conventional authentication schemes
are insufficient for solving these security conflicts, an \emph{en-route
filtering} scheme acts as a defense against these two attacks. To construct an
efficient en-route filtering scheme, this paper first presents a Constrained
Function based message Authentication (CFA) scheme, which can be thought of as
a hash function directly supporting the en-route filtering functionality.
Together with the \emph{redundancy property} of sensor networks, which means
that an event can be simultaneously observed by multiple sensor nodes, the
devised CFA scheme is used to construct a CFA-based en-route filtering (CFAEF)
scheme. In contrast to most of the existing methods, which rely on complicated
security associations among sensor nodes, our design, which directly exploits
an en-route filtering hash function, appears to be novel. We examine the CFA
and CFAEF schemes from both the theoretical and numerical aspects to
demonstrate their efficiency and effectiveness.

29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th