secuity ppt

8/18/2019 secuity ppt

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LIGHTWEIGHT SECURITYALGORITHM FOR WIRELESS

NODE CONNECTED WITH IOT AUTHORS

D Aakash

P Shanthi

Presented by

NAME: D. Aakash

COURSE: M.Tech -Embedded Systems

SASTRA UNIVERSITY


2/18

CONTENTS

• Objective

• Introdction

• !iteratre Srvey

• Re"ated #orks

• Pro$osed sche%e

• &"ock Dia'ra%

• Desi'n ("o# Dia'ra%• Hard#are Ot$t

• Conc"sion


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O&)ECTI*E

• To deter%ine a !i'ht#ei'ht Secrity Encry$tion a"'orith%

+or Resorce Constrained A$$"ication

•In this, the co%bination o+ Sbstittion and Per%tation issed to brin' ot a ci$her that can #ithstand certain

cry$tana"ysis

•

I%$"e%entation o+ the a"'orith% in a $rototy$e thatsecre"y share sensor data +or IoT a$$"ication


4/18

Introdction

• -ire"ess Sensor Net#ork is a #ide +ie"d that on"y re"y on the

sensor data.

• IoT /Internet o+ thin'0 is an e1tension o+ -SN ,#here #e se

c"od +or trans%ission and rece$tion o+ data any#here .

• 2ajor +actor considered• Resorce

• 2e%ory• Po#er

• E1ection Ti%e

• Secrity a"'orith% %st be a trade o++ to a"" these +actors


5/18

Internet O+ Thin's

• 3evin Ashton coined 4Internet o+ Thin's4 $hrase to

describe a syste% #here the Internet is connected to the

$hysica" #or"d via bi5itos sensors

• Key Open Issues o !he IoT• Architectre /ed'e devices, servers, discovery services, $rivacy

etc.0

• secrity

• 6overnance, na%in', identity, inter+aces• Service o$enness, intero$erabi"ity

• Connections o+ rea" and virta" #or"d

• S$ectr% /H(, UH(, IS2 etc.70

• Standards


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!i'ht#ei'ht Cry$to'ra$hy

• Sy%%etric Cry$to'ra$hy *s Asy%%etric Cry$to'ra$hy

• &"ock and Strea% Ci$her

• -hy &"ock Ci$her7

• Secrity

•Hi'her Thro'h$t

• !o# $o#er Cons%$tion

• Co%$actness

• !ess 6ate E5iva"ents


7/18

S.NO PAPER TIT!E PU&!ICATION DESCRIPTION

8. A co%$rehensive

srvey o+ %odern

sy%%etric

cry$to'ra$hic so"tions

+or resorce

constrained

environ%ents

)orna" o+ Net#ork and

Co%$ter A$$"ications

Srvey o+ varios !-C a"'orith%s.

9. !i'ht#ei'ht

Cry$to'ra$hy +or

(P6As

Internationa" Con+erence on

Recon+i'rab"e Co%$tin'

and (P6As, 9::;

Pro$ose "i'ht#ei'ht cry$to'ra$hy

+or (P6As by introdcin' b"ock

ci$her inde$endent o$ti%i


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. Per+or%ance Ana"ysis o+

Ne# !i'ht -ei'ht

Cry$to'ra$hic

A"'orith%s

IOSR )orna" o+ Co%$ter

En'ineerin' /IOSR)CE0 ,

9:89

H%%in' &irdB9 and PRESENT are

t#o recent"y $ro$osed !i'ht #ei'ht

cry$to'ra$hic a"'orith%s .

Per+or%ance ana"yses o+ these t#oe++icient a"'orith%s are done in this

$a$er.

. PRESENTAn "traB

"i'ht#ei'ht b"ock ci$her

in Cry$to'ra$hicHard#are and

E%bedded Syste%s

S$rin'er, 9::

vo". 9

Sbstittion Per%tation net#ork +or

E1tre%e"y resorce constrained

On"y co%%ensrate "eve" o+ secrityHi'h e1ection Ti%e

!atency

F. The 89G

bit b"ock ci$her C!E(IA

in (ast So+t#areEncry$tion

S$rin'er, 9::

vo". ;>

(iesta" strctre #ith Sbstittion

bo1 2ore secre

Cons%e %ore s$ace de to "ar'ern%ber o+ ronds

. TEA, a tiny encry$tion

a"'orith%

in (ast So+t#are

Encry$tion

S$rin'er, 8;;

vo". 8::G

Si%$"est a"'orith%

(e# "ines o+ code

Easi"y breakab"e


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Re"ated -orks

2ethod Descri$tion !i%itation

PRESENT Sbstittion Per%tation net#ork+or E1tre%e"y resorceconstrained

On"y co%%ensrate "eve"o+ secrityHi'h e1ection Ti%e!atency

!ED Co%bination o+ PRESENT AESSPN

(aster in so+t#are ands"o#er in Hard#areCons%es %ore ener'yin hard#are

C!E(IA (iesta" strctre #ith Sbstittion

bo12ore secre

Cons%e %ore s$ace

de to "ar'er n%ber o+ronds

TEA Si%$"est a"'orith%(e# "ines o+ code

Easi"y breakab"e

SEA !atency is "ess

(iesta" Strctre

6ate e5iva"ent is hi'her

hence %e%ory re5ired is%ore


10/18

GRP :A BIT PERMUTATION INSTRUSTION

8 bit GRP e!m"t#ti$%

PROPOSE& SC'EME:

Permutation Merit Demerit

GRP Uses (esse! mem$!y #%d

(ess GE C$"%t

Bette! c!yt$)!#hic

!$e!ties

N"mbe! $* st#)es +#!ies

,ith %"mbe! $* bits

#te%cy i%c!e#se ,ith

bits sie i%c!e#ses

OM/IP0Omega-Flip)

Oe!#te i% si%)(e cyc(e #%d"ses /i1ed %"mbe! $*

st#)es *$! e!m"ti%)

ess #te%cy

E#si(y !e+e!sib(e

&&R

0 Data-Dependent

rotation)

E#sy t$ im(eme%t $%(y *$!

sm#(( *!#cti$% $* bit,ise

$e!#ti$%

#te%cy is m$!e #%d

!e2"i!e m$!e cyc(es

PPERM3R

I% this the c$%t!$( bit is

e#sy t$ )e%e!#te s"$!t!eetiti$% #%d !es"(t i% the

midd(e $* e!m"t#ti$% c#%

be $bt#i%ed

#te%cy is m$!e

I%iti#(i#ti$% !$cesst#4es time

5% e!m"t#ti$% is h#!de!

*!$m % e!m"t#ti$%

T#b(e $$4" This meth$d is *#ste!

A%d e#sy t$ im(eme%t i%

'#!d,#!e

It c$%s"mes m$!e

mem$!y6 (#te%cy is m$!e

#%d !e2"i!e m$!e %"mbe!

$* i%st!"cti$%s


11/18

TRANSPOSITION CIPHER

• 6RP bit "eve" $er%tation ses "ess %e%ory

• There+ore $o#er cons%$tion is a"so "ess


12/18

PRESENTB6RP A NE- HJ&RID

!I6HT-EI6HT DESI6N• 6RP Per%tation

• Si%$"e strctre

• se !ess 2e%ory s$ace

• 6RP &it Per%tation "a's in SBbo1

• SB&o1 is se"ected +ro% PRESENT a"'orith% is Added

• Hybrid Strctre consist o+ one Con+sion and one Di++sion

$ro$erty

• !esser 6ate e5iva"ent


13/18

&"ock Dia'ra%


14/18

Secrity Ana"ysis

• Di++erentia" Cry$tana"ysis

• It is sed to e1$"ore the stren'th o+ the a"'orith% by checkin' its

nonBrando% behavior by 'ivin' certain di++erences in the in$t and

ot$t to check it is hi'h"y $robab"e that is a hi'h"y secre b"ockci$her

• !inear Cry$tana"ysis

• It is done #ith the -a"sh Trans+or% #hich describes the c"oseness

o+ the &oo"ean +nction f to #hether it is a++ine or "inear +nction


15/18

Desi'n ("o# Dia'ra%


16/18

Hard#are Ot$t


17/18

Conc"sion

• Enhance the secrity "eve" and ba"ance trade o++ #ith

$er+or%ance and cost.

• Secrity "eve" can be i%$roved by %odi+yin' and enhancin' the

Sbstittion bo1 o+ the a"'orith%

• To deve"o$ a secre end to end e++icient syste%.

• Hard#are i%$"e%entation in "o# $o#er nodes #ithot a++ectin'its nor%a" $er+or%ance

• Hard#are i%$"e%entation +or -SN secre channe" can be

done


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