A
Highly Scalable Key Pre-Distribution Scheme for Wireless Sensor Networks
ABSTRACT:
Given the
sensitivity of the potential WSN applications and because of resource
limitations, key management emerges as a challenging issue for WSNs. One of the
main concerns when designing a key management scheme is the network
scalability. Indeed, the protocol should support a large number of nodes to
enable a large scale deployment of the network. In this paper, we propose a new
scalable key management scheme for WSNs which provides a good secure
connectivity coverage. For this purpose, we make use of the unital design
theory. We show that the basic mapping from unitals to key pre-distribution
allows us to achieve high network scalability. Nonetheless, this naive mapping
does not guarantee a high key sharing probability. Therefore, we propose an
enhanced unital-based key pre-distribution scheme providing high network
scalability and good key sharing probability approximately lower bounded by 1
− e
0.632. We conduct approximate analysis and
simulations and compare our solution to those of existing methods for different
criteria such as storage overhead, network scalability, network connectivity,
average secure path length and network resiliency. Our results show that the
proposed approach enhances the network scalability while providing high secure
connectivity coverage and overall improved performance. Moreover, for an equal
network size, our solution reduces significantly the storage overhead compared
to those of existing solutions.
0.632. We conduct approximate analysis and
simulations and compare our solution to those of existing methods for different
criteria such as storage overhead, network scalability, network connectivity,
average secure path length and network resiliency. Our results show that the
proposed approach enhances the network scalability while providing high secure
connectivity coverage and overall improved performance. Moreover, for an equal
network size, our solution reduces significantly the storage overhead compared
to those of existing solutions.
EXISTING SYSTEM:
Wireless sensor networks (WSNs) are
increasingly used in critical applications within several fields including
military, medical and industrial sectors. Given the sensitivity of these
applications, sophisticated security services are required. Key management is a
corner stone for many security services such as confidentiality and
authentication which are required to secure communications in WSNs. The
establishment of secure links between nodes is then a challenging problem in
WSNs. Because of resource limitations, symmetric key establishment is one of
the most suitable paradigms for securing exchanges in WSNs. On the other hand,
because of the lack of infrastructure in WSNs, we have usually no trusted third
party which can attribute pair wise secret keys to neighboring nodes, that is
why most existing solutions are based on key pre-distribution.
DISADVANTAGES
OF EXISTING SYSTEM:
A host of research work dealt with symmetric key
pre-distribution issue for WSNs and many solutions have been proposed In the
existing system many disadvantages occur: the design of key rings (blocks of
keys) is strongly related to the network size, these solutions either suffer
from low scalability (number of supported nodes), or degrade other performance
metrics including secure connectivity, storage overhead and resiliency in the
case of large networks.
PROPOSED SYSTEM:
In this proposed system, our aim is to
tackle the scalability issue without degrading the other network performance
metrics. For this purpose, we target the design of a scheme which ensures a
good secure coverage of large scale networks with a low key storage overhead
and a good network resiliency. To this end, we make use, of the unital design
theory for efficient WSN key pre-distribution.
ADVANTAGES
OF PROPOSED SYSTEM:
The advantages of the proposed system as
follows:
·
We propose a naive mapping from unital
design to key pre-distribution and we show through analytical analysis that it
allows to achieve high scalability.
·
We propose an enhanced unitalbased key
pre-distribution scheme that maintains a good key sharing probability while
enhancing the network scalability.
·
We analyze and compare our new approach
against main existing schemes, with respect to different criteria: storage
overhead, energy consumption, network scalability, secure connectivity
coverage, average secure path length and network resiliency.
SYSTEM ARCHITECTURE:
SYSTEM CONFIGURATION:-
HARDWARE CONFIGURATION:-
ü Processor - Pentium –IV
ü Speed - 1.1
Ghz
ü RAM - 256
MB(min)
ü Hard Disk -
20 GB
ü Key Board -
Standard Windows Keyboard
ü Mouse - Two
or Three Button Mouse
ü Monitor - SVGA
SOFTWARE
REQUIREMENTS:
•
Operating system : Windows XP.
•
Coding Language : C#.Net.
•
Data Base : SQL Server 2005
•
Tool : VISUAL STUDIO 2008.
REFERENCE:
Walid Bechkit, Yacine Challal,
Abdelmadjid Bouabdallah, and Vahid Tarokh-“ A Highly Scalable Key
Pre-Distribution Scheme for Wireless Sensor Networks”- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 12, NO. 2, FEBRUARY
2013
