securing underwater wireless communication networks ppt.pptx123.pptx

8/19/2019 securing underwater wireless communication networks ppt.pptx123.pptx

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SECURING UNDERWATER WIRELESS COMMUNICATION NETWORKS

SUBMITTED BY

T.SAI DEEPTHI SREE V.VATSALYA DEPARTMENT OF ECE


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CONTENTS

Introduction Underwater Wireless Communication sstem Attac!s and counter measures

Securit re"uirements Pro#osed securit mec$anisms Conclusion


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INTRODUCTION

(UWCNs )are constituted b sensors! sin"and autono#ous under$ater %e&ic'es(AUs) t&at interact to er*or# seci+ca'ications suc& as under$ater#oniterin,-


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Sensor nodes also !nown as motes or sim#l %odes aresmall and ener& constrained de'ices t$at $a'e t$e a(ilit o)

sensin& t$e surroundin& en'ironment.

Sin" also !nown as (ase station* is a more #ower)ul nodet$at (e$a'es as an inter)ace (etween t$e sensor nodes andt$e clients.

Autono#ous Under$ater e&ic'es(AUs)t$at interact to #er)orm s#eci+c a##lications suc$ as

underwater moniterin&.


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Under$ater Wire'ess Co##unication Sste#

Radio wa'es do not #ro#a&ate well underwater due to t$e $i&$ener&

a(sor#tion o) water

T$ere)ore* underwater communications are (ased on acousticlin!sc$aracteri,ed ( lar&e #ro#a&ation delas.

T$e #ro#a&ation s#eed o) acoustic si&nals in water -t#icall

/00 m1s2

Acoustic c$annels $a'e low (andwidt$. As a result* t$e (it errorrates o) acoustic lin!s are o)ten $i&$* and losses o) connecti'it arise

It cannot rel on t$e 3lo(al Positionin& Sstem -3PS2 (ecause it


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Under$ater Wire'ess Co##unication Sste#

Underwater wireless communication networ!s are #articularl

'ulnera(le to malicious attac!s due to t$e $i&$ (it error rates*lar&e and 'aria(le #ro#a&ation delas* and low (andwidt$ o) acousticc$annels.

Se'eral met$ods are #ro#osed to secure Underwater wirelesscommunication %etwor!s. T$ree sc$emes namel* secure timesnc$roni,ation* locali,ation* and routin& in UWC%s


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Attac" s

Wor#&o'e

attac"

Sin"&o'e

Attac"

.e''o/'oodattac"

Ac"no$'ed,e#e

ntSoo+n

,

Se'ecti%e/or$ardi

n,

Sbi'attac"

0a##in,


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0a##in,

Met&od o* Attac" T$e transmission o) data #ac!ets continuousl sot$at t$e

wireless c$annel is com#letel (loc!ed.

Counter#easuresS#read s#ectrum tec$ni"ues

Sensors can switc$ to slee# mode


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Se'ecti%e /or$ardin,

Met&od o* Attac" Malicious nodes dro# certain messa&es instead o))orwardin& t$em to

$inder routin&.

Counter#easuresMulti#at$ routin&

Aut$entication


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Sin"&o'e Attac"

Met&od o* Attac" A malicious node attem#ts to attract tra4c )rom a#articular area towards it ( announcin& t$at it is a $i&$ "ualit

route

Counter#easures3eo&ra#$ical routin&Aut$entication o) nodes e5c$an&in& routin&

in)ormation.


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.e''o1ood attac"

Met&od o* attac" A node recei'in& a HE667 #ac!et )rom a malicious nodema inter#ret t$at t$e ad'ersar is a nei&$(our.

Counter#easuresBidirectional lin! 'eri+cation

Aut$entication is a #ossi(le de)ense


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Securit Re2uire#ents

Aut&enticationProo) t$at data was sent ( a le&itimate usercon+dentialit

In)ormation is not accessi(le to unaut$ori,ed #arties

Inte,ritIn)ormation is not altered a'aila(ilit

Data s$ould (e a'aila(le w$en needed ( anaut$ori,ed user


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3roosed Securit Mec&anis#

Secure under$ater co##unicationSecure time snc$roni,ation

Secure locali,ation

Secure routin&


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Secure ti#e Snc&roni4ation

W& is Ti#e Snc&roni4ationI#ortant56ocation and #ro5imit o) si(lin&s

Intra networ! coordination

Maintain orderin& o) messa&es

Use o) TDMA

Ener& e4cienc


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Secure ti#e Snc&roni4ation

Mu'ti'ateration a',orit3&ase 67Assume t$at a set o) anc$or nodes on ocean sur)ace alread

!now t$eir location and time wit$out error A &rou# o) near( sensors recei'es snc$roni,ation Pac!ets)rom at least / anc$or nodes

3&ase 87 T$e sensors learn t$eir time di8erence (etween t$emsel'es andanc$or

nodes ( com#arin& t$e snc$roni,ation #ac!ets T$ese nodes su(se"uentl (ecomes t$e ne5t anc$or nodes


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Secure Loca'i4ation

Goa'9 To &uarantee correctness des#ite o) t$e #resence o)Intruders

6ocali,ation is t$e #rocess )or eac$ sensor node to locateits #ositions in t$e networ!.

6ocali,ation al&orit$ms de'elo#ed )or terrestrial sensornetwor!s are eit$er (ased on t$e si,na' stren,t& or t$e ti#e9o*9arri%a' (TOA)


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Secure Loca'i4ation

Ran,e9based : Use e5act measurements -#oint:to:#oint distanceestimate

-ran&e2 or an&le estimates2 : More e5#ensi'e : Scala(le 6ocali,ation wit$ Mo(ilit Prediction

-S6MP2

Ran,e9*ree : Cost:e8ecti'e alternati'e to ran&e:(ased solutions


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Secure Routin,

Routin& is es#iciall c$allen&in& in UWC%s due to t$e lar&e #ro#a&ation delas* low (andwidt$* di4cult o) (atterre+lls o) underwater sensors* and dnamic to#olo&ies.

A secure routin& re;ects routin& #at$s containin& malicious

nodes.


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Secure Routin,Proacti'e #rotocols -DSD


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Ad%anta,es

It a'oids data s#oo+n&.

It a'oids #ri'ac lea!a&e.

Minimi,e communication and com#utational cost.

Ma5imi,es t$e (atter #ower ( #reser'in& t$e #ower o)Underwater sensors.


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Conc'usion

Wireless tec$nolo& #las a 'ital role in man a##lication areast$at

were not #ossi(le in t$e #ast. Wireless Underwater

communication isone o) t$em.

T$e main attac!s related to UWC% $a'e (een sur'eed.

A sstem wit$ secure time snc$roni,ation* secure locali,ation

andsecure routin& can o'ercome t$ese attac!s.

Since t$e de'elo#ment o) t$e #ro#osed sstem is still in itsde'elo#ment

sta&e* an account o) actual im#lementation $as not (een


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THA%> Y7U

securing underwater wireless communication networks ppt.pptx123.pptx

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