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SPOC: A Secure and Privacy-preserving OpportunisticComputing Framework for Mobile-ealt!care "mergency

Abstract

With the pervasiveness of smart phones and the advance of wireless body sensor

networks (BSNs), mobile Healthcare (m-Healthcare), which extends the operation of Healthcare

provider into a pervasive environment for better health monitorin, has attracted considerable

interest recently! However, the flo"rish of m-Healthcare still faces many challenes incl"din

information sec"rity and privacy preservation! #n this paper, we propose a sec"re and privacy-

preservin opport"nistic comp"tin framework, called S$%&, for m-Healthcare emerency! With

S$%&, smart phone reso"rces incl"din comp"tin power and enery can be opport"nistically

athered to process the comp"tin intensive personal health information ($H#) d"rin m-

Healthcare emerency with minimal privacy disclos"re! #n specific, to leverae the $H# privacy

disclos"re and the hih reliability of $H# process and transmission in m-Healthcare emerency,

we introd"ce an efficient "ser-centric privacy access control in S$%& framework, which is based

on an attrib"te-based access control and a new privacy-preservin scalar prod"ct comp"tation

($$S$&) techni'"e, and allows a medical "ser to decide who can participate in the opport"nistic

comp"tin to assist in processin his overwhelmin $H# data! etailed sec"rity analysis shows

that the proposed S$%& framework can efficiently achieve "ser-centric privacy access control in

m-Healthcare emerency! #n addition, performance eval"ations via extensive sim"lations

demonstrate the S$%&s effectiveness in term of providin hih reliable $H# process and

transmission while minimi*in the privacy disclos"re d"rin m-Healthcare emerency!

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Arc!itecture

"#isting System

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#n +xistin System, ccordin to the sensex over the ae of . is expected to hit /0

million by 1020, havin do"bled since 1000! Health care expendit"res pro3ected to rise to 4.!56

by 1040! 7he cost of health care for the nations ain pop"lation has become a national concern

are important for "nderstandin how the opport"nistic comp"tin paradim work when reso"rces

available on different nodes can be opport"nistically athered toether to provide richer

f"nctionality, they have not considered the potential sec"rity and privacy iss"es existin in the

opport"nistic comp"tin paradim!

Proposed System

#n o"r proposed S$%& framework aims at the sec"rity and privacy iss"es, and develops a

"ser-centric privacy access control of opport"nistic comp"tin in m-Healthcare emerency!

dvantaes

Shift from a clinic-oriented, centrali*ed healthcare system to a patient-

oriented, distrib"ted healthcare system

8ed"ce healthcare expenses thro"h more efficient "se of clinical reso"rces

and earlier detection of medical conditions

&hallenes

$erformance, 8eliability, Scalability, 9oS, $rivacy, Sec"rity :

;ore prone to fail"res, ca"sed by power exha"stion, software and hardware

fa"lts, nat"ral disasters, malicio"s attacks, and h"man errors etc!

Modules

4! $ervasive health monitorin in ;-Healthcare

1! Body Sensor Network

2! Sec"rity nalysis

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#n this ;od"le to develop a sec"re and privacy-preservin opport"nistic comp"tin

framework to provide hih reliability of $H# process and transmission while minimi*in $H#

privacy disclos"re in m-Healthcare emerency! Specifically, we

i) apply opport"nistic comp"tin in m-Healthcare emerency to achieve hih-

reliability of $H# process and transmission@ and

ii) ii) develop "ser-centric privacy access control to minimi*e the $H# privacy

disclos"re!

$erformance +vol"tion

#n this mod"le, the performance metrics "sed in the eval"ation are A

4) 7he averae n"mber of '"alified helpers (N9H), which indicates how many

'"alified helpers can participate in the opport"nistic comp"tin within a iven time

period, and

1) 7he averae reso"rce cons"mption ratio (8&8), which is defined as the

fraction of the reso"rces cons"med by the medical "ser in emerency to the total

reso"rces cons"med in opport"nistic comp"tin for $H# process within a iven time

period!

Sim"lation Set"p

#n this ;od"le, the sim"lator implements the application layer "nder the ass"mptions that

the comm"nications between smart phones and the comm"nications between BSNs and smart

phones are always

workable when they are

within each others

transmission ranes!

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8eport eneration

#n this mod"le, Health care center enerate crystal report from the database collection for

f"t"re reference!

System Configuration

Hardware 8e'"irements

System A $enti"m # 1!< =H*!

Hard isk A loppy rive A 4!