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atil
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p
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c
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b
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k
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In
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te Of
Tec
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lo
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(
Dr.
A
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ail:
sh
a
m
sh
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k
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r.
p
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rg
1.
I
NT
RO
D
UCT
I
O
N
I
n
ter
n
et
-
of
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T
h
in
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s
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I
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p
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k
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w
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lo
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b
ased
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ar
ac
ter
ize
d
b
y
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m
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s
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w
o
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k
o
f
d
if
f
er
en
t
s
m
ar
t
ap
p
lian
ce
s
[
1
,
2
]
.
A
s
it
co
n
n
ec
ts
d
if
f
er
e
n
t
f
o
r
m
s
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s
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s
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d
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p
e
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co
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m
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co
n
n
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tiv
it
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n
d
d
ata
tr
an
s
m
is
s
io
n
[
3
,
4
]
.
On
e
o
f
th
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b
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g
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th
r
ea
t
s
in
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u
r
it
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g
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w
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t
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t
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b
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m
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ev
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at
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ev
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tial
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cr
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t
f
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a
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x
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ce
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I
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ev
ices o
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f
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ec
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r
it
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ates o
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s
i
n
ca
p
ab
le
o
f
r
esis
ti
n
g
l
eth
al
t
h
r
ea
ts
.
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o
th
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s
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g
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if
ica
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b
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o
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co
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o
n
t
h
r
ea
t
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f
Di
s
tr
ib
u
ted
Den
ial
-
of
-
Ser
v
ices
[
5
]
.
A
s
t
h
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I
o
T
n
o
d
e
s
ar
e
co
n
n
ec
ted
v
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d
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er
v
ices;
t
h
er
ef
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r
e,
it
is
ev
e
n
t
u
al
th
at
th
e
ad
v
er
s
ar
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l
af
f
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g
c
lo
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d
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o
s
y
s
te
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co
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also
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f
f
ec
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t
h
e
d
e
v
ic
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n
e
t
w
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k
s
w
it
h
o
u
t
m
u
c
h
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f
f
o
r
t.
Da
ta
p
r
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ac
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is
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o
th
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s
i
g
n
i
f
ican
t
p
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b
le
m
i
n
I
o
T
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th
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d
ev
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co
n
s
i
s
te
n
t
l
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ca
p
tu
r
e
th
e
d
ata,
p
r
o
ce
s
s
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it,
an
d
tr
an
s
m
it
s
it
to
an
o
th
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I
o
T
d
ev
ice
[
6
,
7
]
.
T
h
e
ch
alle
n
g
in
g
p
ar
t
in
th
is
is
t
h
at
th
e
d
ata
o
f
th
e
u
s
er
ar
e
h
ig
h
l
y
d
is
tr
ib
u
ted
an
d
s
h
ar
ed
a
m
o
n
g
ea
c
h
o
t
h
er
,
wh
ich
v
io
late
t
h
e
p
r
iv
ac
y
r
ig
h
t
s
o
f
t
h
e
u
s
er
d
ata
[
8
]
.
A
p
ar
t
f
r
o
m
th
i
s
u
s
a
g
e
o
f
m
ac
h
in
e
lear
n
in
g
a
n
d
au
to
m
a
t
io
n
is
an
o
t
h
er
f
ac
to
r
w
h
ic
h
e
n
h
an
ce
s
th
e
f
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f
I
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d
ev
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w
it
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esp
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d
ata
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al
y
tic
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o
in
v
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ar
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s
s
ec
u
r
it
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t
h
r
ea
ts
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T
h
e
u
s
a
g
e
o
f
ar
ti
f
icial
i
n
telli
g
e
n
c
e
is
q
u
ite
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n
ev
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I
o
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d
ea
ls
w
it
h
m
illi
o
n
s
o
f
co
n
n
ec
ted
d
ev
ices
[
9
]
.
Ma
j
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r
it
y
o
f
s
u
c
h
to
o
ls
ar
e
h
i
g
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l
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m
o
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s
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w
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I
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o
ac
h
es
ar
e
in
n
ascen
t
s
t
ag
es
o
f
r
esear
ch
a
n
d
d
ev
elo
p
m
e
n
t
a
n
d
r
eq
u
ir
e
m
o
r
e
in
te
n
s
i
v
e
in
v
es
tig
a
tio
n
.
A
p
ar
t
f
r
o
m
th
is
,
t
h
er
e
i
s
a
n
o
t
h
er
p
r
o
b
le
m
as
s
o
ciate
d
w
it
h
t
o
p
o
lo
g
y
o
f
a
n
I
o
T
w
h
ic
h
s
a
y
s
th
at
I
o
T
n
o
d
es
ar
e
al
w
a
y
s
r
eq
u
ir
ed
to
p
er
f
o
r
m
u
p
lin
k
tr
an
s
m
is
s
io
n
v
ia
I
o
T
g
at
e
w
a
y
n
o
d
e
th
at
ca
r
r
ies
o
u
t
tr
a
n
s
lat
io
n
al
s
er
v
ice
s
.
T
h
e
p
r
o
b
lem
u
s
in
g
t
h
is
co
n
v
e
n
tio
n
al
to
p
o
lo
g
y
i
s
th
at
t
h
er
e
is
m
u
ch
i
n
v
o
l
v
e
m
en
t
o
f
ti
m
e
f
ac
to
r
,
w
h
ich
g
i
v
es
an
o
p
p
o
r
tu
n
it
y
to
m
a
n
-
in
-
m
i
d
d
le
attac
k
to
la
u
n
c
h
a
n
atta
ck
.
A
p
ar
t
f
r
o
m
t
h
is
,
th
e
e
n
er
g
y
co
n
s
u
m
p
tio
n
o
f
th
e
I
o
T
n
o
d
es
w
il
l
also
b
e
h
ig
h
if
a
n
y
co
m
p
lex
cr
y
p
to
g
r
ap
h
ic
p
r
o
to
co
l
(
e.
g
.
,
R
iv
est
-
S
h
a
m
ir
A
l
g
o
r
ith
m
)
r
u
n
s
in
its
u
n
d
er
l
y
i
n
g
ar
ch
itect
u
r
e.
As
th
e
I
o
T
n
o
d
es
ar
e
r
eso
u
r
ce
co
n
s
tr
ain
ed
n
o
d
es;
h
e
n
ce
,
ex
ec
u
tio
n
o
f
co
m
p
le
x
cr
y
p
to
g
r
ap
h
ic
al
g
o
r
ith
m
w
ill
f
u
r
th
er
d
r
ai
n
o
u
t
t
h
e
e
n
er
g
y
o
f
s
u
c
h
n
o
d
es.
S
u
c
h
a
n
i
m
p
le
m
e
n
tatio
n
c
y
cle
o
f
f
er
s
p
r
o
b
lem
s
in
b
o
th
s
ec
u
r
it
y
a
s
w
ell
as
d
ata
d
eliv
er
y
p
er
f
o
r
m
an
ce
s
.
T
h
er
ef
o
r
e,
t
h
er
e
is
a
d
elib
er
ate
n
ee
d
o
f
a
n
ef
f
ec
tiv
e
s
y
s
te
m
th
at
ca
n
in
v
esti
g
a
te
th
e
c
h
an
g
e
o
f
s
u
c
h
in
h
er
e
n
t
m
ec
h
a
n
i
s
m
o
f
d
ata
p
ac
k
et
f
o
r
w
ar
d
in
g
p
r
o
ce
s
s
s
u
c
h
th
at
b
o
th
s
ec
u
r
it
y
,
a
s
w
ell
as
d
ata
d
eli
v
er
y
p
er
f
o
r
m
a
n
ce
,
s
h
o
u
ld
i
n
cr
ea
s
e.
T
h
er
ef
o
r
e,
th
e
p
r
o
p
o
s
ed
s
y
s
te
m
p
r
esen
t
s
a
n
o
v
el
an
al
y
tical
m
o
d
el
th
at
i
s
r
esp
o
n
s
ib
le
f
o
r
in
tr
o
d
u
cin
g
a
s
ec
u
r
ed
au
th
e
n
tica
tio
n
s
y
s
te
m
,
a
n
o
v
e
l
m
ec
h
a
n
i
s
m
o
f
th
e
co
m
m
u
n
i
ca
tio
n
p
r
o
ce
s
s
f
r
o
m
I
o
T
n
o
d
es,
an
d
s
ig
n
i
f
ica
n
t
s
av
i
n
g
o
f
en
er
g
y
o
f
th
e
n
o
d
es.
T
h
er
e
ar
e
v
ar
io
u
s
ex
i
s
ti
n
g
ap
p
r
o
ac
h
es
th
at
h
a
v
e
o
f
f
er
ed
d
is
cu
s
s
io
n
ab
o
u
t
th
e
s
ec
u
r
it
y
ap
p
r
o
ac
h
es
in
I
o
T
[
1
1
]
.
Mo
s
t
r
ec
en
tl
y
,
Das
et
al.
[
1
2
]
h
a
v
e
u
s
ed
ellip
ti
ca
l
cu
r
v
e
cr
y
p
to
g
r
ap
h
y
in
o
r
d
er
to
o
f
f
er
ac
ce
s
s
co
n
tr
o
l
in
t
h
e
I
o
T
en
v
ir
o
n
m
en
t.
T
h
e
w
o
r
k
s
o
f
Ha
n
et
a
l.
[
1
3
]
h
av
e
p
r
esen
ted
s
ec
u
r
i
t
y
m
o
d
eli
n
g
u
s
in
g
a
s
o
f
t
w
ar
e
-
d
ef
i
n
ed
n
e
t
w
o
r
k
.
A
p
p
r
o
ac
h
u
s
i
n
g
s
h
u
f
f
li
n
g
o
f
a
d
d
r
ess
es
h
a
s
b
ee
n
ca
r
r
ied
o
u
t
b
y
Nizz
i
et
al.
[
1
4
]
f
o
r
m
in
i
m
iz
in
g
th
e
n
e
t
w
o
r
k
o
v
er
h
ea
d
.
T
h
e
w
o
r
k
o
f
Sib
o
n
i
et
al.
[
1
5
]
h
as
p
r
esen
ted
a
f
r
am
e
w
o
r
k
th
a
t
ca
n
b
e
u
s
ed
f
o
r
ass
e
s
s
m
e
n
t
o
f
s
ec
u
r
i
t
y
s
tr
en
g
t
h
co
n
n
ec
ted
w
it
h
I
o
T
.
T
h
e
au
th
o
r
s
h
a
v
e
also
u
s
e
d
m
ac
h
in
e
lear
n
i
n
g
p
r
o
ce
s
s
in
o
r
d
er
to
ca
r
r
y
o
u
t
t
h
i
s
w
o
r
k
.
W
a
n
g
et
al.
[
1
6
]
h
av
e
d
is
c
u
s
s
ed
s
ec
u
r
it
y
ap
p
r
o
ac
h
es
u
s
in
g
th
e
p
h
y
s
ical
la
y
er
i
n
o
r
d
er
to
in
co
r
p
o
r
ate
th
e
p
r
ec
is
e
lev
el
o
f
s
ec
r
ec
y
w
it
h
b
etter
ad
ap
tab
ilit
y
to
n
et
w
o
r
k
alter
atio
n
.
Si
g
n
i
f
ica
n
ce
o
f
s
ec
u
r
it
y
a
n
d
tr
u
s
t
is
d
is
c
u
s
s
ed
b
y
Hu
d
s
o
n
[
1
7
]
.
Dev
ice
au
t
h
e
n
ti
ca
tio
n
p
r
o
b
lem
h
as
b
ee
n
d
is
cu
s
s
ed
b
y
Hao
et
al.
[
1
8
]
w
h
er
e
t
h
e
p
h
y
s
ical
la
y
er
h
as
b
ee
n
u
s
ed
w
h
ile
L
i
et
al.
[
1
9
]
h
as
u
s
ed
tr
u
s
t
f
ac
to
r
as a
p
ar
t o
f
th
e
ev
al
u
ati
o
n
p
r
o
ce
s
s
.
P
r
iv
ac
y
i
s
a
n
o
th
er
co
n
ce
r
n
in
th
e
I
o
T
s
y
s
te
m
,
e
s
p
ec
iall
y
wh
en
it
h
a
n
d
les
th
e
m
ass
iv
e
s
c
ale
o
f
d
at
a
an
d
th
e
w
o
r
k
o
f
So
llin
s
[
2
0
]
h
as
p
r
esen
ted
a
co
n
ce
p
tu
al
s
o
lu
tio
n
f
o
r
th
i
s
.
W
az
id
et
al.
[
2
1
]
h
av
e
d
is
cu
s
s
ed
a
k
e
y
m
an
a
g
e
m
en
t
s
c
h
e
m
e
f
o
r
p
r
o
m
o
ti
n
g
t
h
e
a
u
to
n
o
m
o
u
s
a
s
s
ess
m
e
n
t
o
f
s
ec
u
r
it
y
s
tr
en
g
t
h
.
Secu
r
e
tr
an
s
m
is
s
io
n
o
f
d
ata
u
s
in
g
a
s
o
f
t
w
ar
e
-
d
e
f
in
ed
n
et
w
o
r
k
w
as a
l
s
o
p
r
o
v
en
to
o
f
f
er
b
ett
er
s
ec
u
r
it
y
,
a
s
s
ee
n
in
t
h
e
w
o
r
k
o
f
L
i
u
et
a
l.
[
2
2
]
.
T
h
e
ag
e
n
t
-
b
ased
m
ec
h
a
n
i
s
m
w
a
s
al
s
o
u
s
ed
i
n
I
o
T
an
d
clo
u
d
ec
o
s
y
s
te
m
as
MA
N
E
T
f
i
n
d
s
i
ts
u
lti
m
ate
d
ep
lo
y
m
e
n
t
o
v
er
t
h
i
s
.
T
h
e
r
ec
en
t
w
o
r
k
s
ca
r
r
ied
o
u
t
b
y
Ma
g
ar
i
n
o
et
al.
[
2
3
]
h
av
e
u
s
ed
a
g
en
t
-
b
ased
ap
p
r
o
ac
h
f
o
r
f
ac
ilit
a
tin
g
m
a
s
s
i
v
e
m
i
n
i
n
g
d
ata.
An
o
th
er
r
ec
e
n
t
w
o
r
k
o
f
Fo
r
tin
o
et
al.
[
2
4
]
h
as
d
is
c
u
s
s
ed
h
o
w
a
g
en
t
-
b
as
ed
m
ec
h
a
n
is
m
ca
n
b
e
e
m
b
ed
d
ed
w
ith
s
m
ar
t
o
b
j
ec
ts
in
th
e
I
o
T
en
v
ir
o
n
m
en
t
.
T
h
e
w
o
r
k
o
f
Gar
g
ee
s
an
d
Sc
o
tt
[
2
5
]
h
as
p
r
esen
ted
a
tec
h
n
iq
u
e
f
o
r
f
ac
ilit
at
in
g
d
ata
s
tr
u
c
tu
r
izatio
n
o
v
er
I
o
T
m
ed
ia
i
n
o
r
d
er
to
ex
tr
ac
t
t
h
e
p
atter
n
o
f
co
m
m
u
n
ica
tio
n
.
H
o
w
e
v
er
,
s
u
ch
s
t
u
d
ies
ar
e
m
o
r
e
d
ata
-
o
r
i
en
ted
a
n
d
less
o
n
s
ec
u
r
it
y
.
A
n
o
t
h
er
w
o
r
k
ca
r
r
ied
o
u
t
b
y
Fo
r
tin
o
et
al.
[
2
6
]
h
av
e
d
is
cu
s
s
e
d
th
at
h
y
b
r
id
izi
n
g
th
e
ch
ar
ac
ter
i
s
tics
o
f
ag
e
n
ts
h
as
m
u
ltip
le
b
en
e
f
it
s
o
f
co
m
m
u
n
ica
tio
n
s
y
s
te
m
a
s
s
e
s
s
m
e
n
t
i
n
an
I
o
T
.
T
h
e
w
o
r
k
ca
r
r
ied
o
u
t
b
y
Hsi
e
h
et
al.
[
2
7
]
h
as
co
n
s
tr
u
cted
t
h
e
d
esig
n
o
f
an
ag
e
n
t
u
s
in
g
t
h
e
ev
e
n
t
-
d
r
iv
en
ap
p
r
o
ac
h
f
o
r
co
n
s
tr
u
ct
in
g
t
h
e
co
m
m
u
n
icat
io
n
m
ec
h
a
n
is
m
in
I
o
T
.
T
h
e
ag
en
t
-
b
ased
m
ec
h
an
is
m
w
a
s
also
u
s
ed
i
n
I
o
T
an
d
clo
u
d
ec
o
s
y
s
te
m
as
M
A
NE
T
f
i
n
d
s
its
u
lti
m
ate
d
ep
lo
y
m
e
n
t
o
v
er
th
i
s
.
A
n
o
t
h
er
r
ec
en
t
w
o
r
k
o
f
Fo
r
tin
o
et
al.
[
2
8
]
h
as
d
is
c
u
s
s
ed
h
o
w
a
g
e
n
t
-
b
ased
m
ec
h
an
is
m
ca
n
b
e
e
m
b
ed
d
ed
w
it
h
s
m
a
r
t
o
b
j
ec
ts
in
t
h
e
I
o
T
en
v
ir
o
n
m
e
n
t.
T
h
e
w
o
r
k
o
f
Gar
g
ee
s
a
n
d
Sco
tt
[
2
9
]
h
as
p
r
esen
ted
a
tec
h
n
iq
u
e
f
o
r
f
ac
ilit
ati
n
g
d
ata
s
tr
u
ct
u
r
izatio
n
o
v
er
I
o
T
m
ed
i
a
in
o
r
d
er
to
ex
tr
ac
t
t
h
e
p
atte
r
n
o
f
co
m
m
u
n
icatio
n
.
Ho
w
ev
er
,
s
u
ch
s
t
u
d
ies
ar
e
m
o
r
e
d
ata
-
o
r
ien
ted
an
d
less
o
n
s
ec
u
r
i
t
y
.
T
h
e
s
tu
d
y
ca
r
r
ied
o
u
t
b
y
Sa
n
to
s
et
al.
[
3
0
]
h
as
d
is
cu
s
s
ed
th
e
u
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k
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H
s
ieh
et
al.
[
3
1
]
h
as
co
n
s
tr
u
cted
t
h
e
d
esig
n
o
f
a
n
ag
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as f
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d
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o
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ith
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it.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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N
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2
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8
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I
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g
,
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10
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1
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Feb
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ar
y
2
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f
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p
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p
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ed
s
tu
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y
ca
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b
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tated
as
“
Dev
elo
p
in
g
a
co
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u
t
a
tio
n
a
l
fr
a
mewo
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k
w
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in
o
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ffer
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t le
ve
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f secr
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in
I
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mmu
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ystem
."
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[
3
2
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to
w
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o
T
en
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w
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2.
SYST
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ciate
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itect
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cc
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Fig
u
r
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2
.
T
h
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b
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h
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in
th
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w
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ll
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to
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n
o
d
e
o
n
t
h
e
b
asis
o
f
d
is
ta
n
ce
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
E
lec
&
C
o
m
p
E
n
g
I
SS
N:
2088
-
8708
N
o
ve
l a
u
th
en
tica
tio
n
fr
a
mewo
r
k
fo
r
s
ec
u
r
in
g
co
mmu
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2
.
1
.
AUS
(
a
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ated
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asicall
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m
k
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s
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etain
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L
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-
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)
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T
h
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p
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ith
m
co
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s
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all
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I
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T
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d
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(
L
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-
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an
d
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tes
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p
r
i
m
ar
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lizatio
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o
f
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m
eter
s
f
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an
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k
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f
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tr
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cted
t
h
at
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es
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p
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m
a
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ter
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m
s
k
an
d
p
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m
b
er
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p
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m
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o
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ate
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e
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L
i
n
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-
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T
h
e
p
r
o
p
o
s
ed
s
y
s
te
m
th
e
n
ap
p
lies
th
e
co
n
ce
p
t
o
f
A
US,
w
h
ic
h
p
er
f
o
r
m
s
a
s
elec
tio
n
o
f
d
y
n
a
m
ic
lo
ca
l
I
o
T
g
ate
w
a
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l
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n
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(
L
in
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-
5
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T
h
e
p
r
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ce
s
s
also
co
n
s
id
er
s
a
p
ar
a
m
eter
θ
is
i
n
tr
o
d
u
ce
d
f
o
r
en
s
u
r
ed
th
e
in
c
lu
s
i
o
n
o
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elig
ib
le
I
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T
g
ate
w
a
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o
d
e
d
y
n
a
m
icall
y
.
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in
all
y
,
th
e
b
est
I
o
T
g
ate
w
a
y
n
o
d
e
is
s
elec
ted
lo
ca
lly
o
n
t
h
e
b
asis
o
f
m
in
i
m
u
m
d
is
tan
ce
(
L
in
e
-
6
)
.
T
h
e
n
ex
t
p
r
o
ce
s
s
is
to
g
en
er
ate
t
h
e
s
ig
n
a
tu
r
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s
i
g
u
s
i
n
g
a
n
en
cr
y
p
tio
n
f
u
n
ct
io
n
f
(
x
)
co
n
s
id
er
in
g
t
h
e
in
p
u
t
ar
g
u
m
e
n
t
o
f
m
es
s
ag
e
m
a
n
d
en
cr
y
p
ti
o
n
k
e
y
s
k
(
L
in
e
-
7
)
.
Si
m
ilar
s
t
ep
s
ar
e
iter
ated
f
o
r
th
e
S
C
R
ap
p
r
o
ac
h
w
i
th
t
h
e
in
clu
s
io
n
o
f
t
h
e
ac
tiv
e
a
n
d
p
ass
i
v
e
m
o
d
e
o
f
o
p
er
atio
n
.
T
h
e
co
m
p
lete
alg
o
r
it
h
m
o
f
SC
R
w
o
r
k
s
o
n
co
m
p
ile
ti
m
e
an
d
p
er
f
o
r
m
a
u
to
n
o
m
o
u
s
elec
tio
n
o
f
d
y
n
a
m
ic
lo
ca
l
I
o
T
g
ate
w
a
y
n
o
d
e,
an
d
it
d
o
esn
't
r
eq
u
ir
e
an
y
p
ac
k
et
to
b
e
tr
an
s
m
itted
in
o
r
d
er
to
o
b
tain
in
f
o
r
m
atio
n
.
T
h
e
s
i
m
ilar
p
r
o
ce
s
s
o
f
in
co
r
p
o
r
atio
n
o
f
th
e
d
ig
ita
l
Sig
n
at
u
r
e
u
s
ed
in
AUS
i
s
a
ls
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u
s
ed
i
n
SC
R
e
x
ce
p
t
w
it
h
t
h
e
ex
ce
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tio
n
o
f
th
e
i
n
cl
u
s
io
n
o
f
t
h
e
ac
ti
v
e
m
o
d
e
o
f
s
ig
n
at
u
r
e
g
e
n
er
atio
n
.
T
h
e
f
i
n
al
s
tep
o
f
th
e
a
lg
o
r
it
h
m
p
er
f
o
r
m
s
f
o
r
w
ar
d
in
g
o
f
th
e
d
ata
to
th
e
ac
ce
s
s
n
o
d
e
th
at
f
i
n
all
y
u
s
er
ca
n
ac
ce
s
s
it
v
ia
clo
u
d
s
er
v
ices.
Hen
ce
,
t
h
e
p
r
o
p
o
s
ed
s
y
s
te
m
o
f
f
er
s
a
co
s
t
-
e
f
f
ec
ti
v
e
s
ec
u
r
it
y
al
g
o
r
ith
m
w
h
ich
is
h
ig
h
l
y
n
o
n
-
r
ec
u
r
s
iv
e
in
it
s
o
p
er
atio
n
an
d
y
ield
s
f
a
s
ter
g
en
er
atio
n
o
f
t
h
e
s
ec
r
et
k
e
y
.
A
p
ar
t
f
r
o
m
t
h
i
s
,
th
e
p
r
o
p
o
s
ed
s
y
s
te
m
o
f
f
er
s
p
er
f
ec
t
d
ata
s
ec
u
r
it
y
w
h
i
le
p
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f
o
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m
in
g
tr
an
s
m
is
s
io
n
.
T
h
e
n
ex
t
s
ec
tio
n
d
is
c
u
s
s
es t
h
e
r
es
u
lt o
b
tain
ed
.
3.
RE
SU
L
T
ANAL
YSI
S
As
th
e
p
r
o
p
o
s
ed
s
y
s
te
m
i
n
tr
o
d
u
ce
s
an
a
u
t
h
en
ticatio
n
m
et
h
o
d
w
h
er
e
en
cr
y
p
tio
n
m
ec
h
an
is
m
u
s
in
g
s
ig
n
at
u
r
e
g
e
n
er
atio
n
(
A
US)
a
n
d
s
ig
n
at
u
r
e
v
alid
atio
n
(
SC
R
)
,
th
er
ef
o
r
e,
it
is
an
ticip
ated
t
h
at
th
er
e
co
u
ld
b
e
a
co
n
s
u
m
p
tio
n
o
f
e
n
er
g
y
e
v
en
tu
a
ll
y
.
T
h
er
ef
o
r
e,
t
h
e
p
r
o
p
o
s
ed
s
y
s
te
m
co
n
s
id
er
s
b
ei
n
g
b
en
ch
m
ar
k
ed
w
i
t
h
ce
r
tain
en
er
g
y
e
f
f
icie
n
t
s
y
s
te
m
o
f
e
x
is
t
in
g
liter
at
u
r
e
co
n
n
e
cted
w
it
h
I
o
T
.
W
e
f
in
d
th
e
w
o
r
k
ca
r
r
ied
o
u
t
b
y
Evaluation Warning : The document was created with Spire.PDF for Python.
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3
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h
as
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[
3
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h
as
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u
tili
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o
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s
a
m
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test
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as f
o
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P
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An
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a
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u
s
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d
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Sig
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at
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An
o
th
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i
n
ter
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g
p
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in
t
is
th
at
u
s
a
g
e
o
f
d
ig
ital
Sig
n
at
u
r
e
h
as
to
b
e
al
w
a
y
s
c
o
m
p
u
ted
,
an
d
th
er
e
is
n
o
ap
r
io
r
i
in
f
o
r
m
at
io
n
s
et
i
n
m
e
m
o
r
y
,
a
n
d
th
er
ef
o
r
e,
th
e
Si
g
n
atu
r
e
g
en
er
ated
is
h
ig
h
l
y
s
ec
u
r
ed
,
an
d
its
a
u
t
h
e
n
ticatio
n
p
o
lic
y
(
SC
R
)
f
u
r
t
h
er
g
iv
e
s
p
r
o
o
f
o
f
v
alid
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n
.
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n
ce
,
it
is
n
o
t
p
o
s
s
ib
le
f
o
r
an
attac
k
er
to
ev
en
g
ain
e
v
en
t
h
e
en
cr
y
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ted
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ata
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e
n
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x
t
m
o
d
u
le
o
f
au
t
h
en
t
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n
w
il
l
f
ail
t
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ad
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er
s
ar
y
as
it
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n
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h
a
v
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th
e
m
o
d
el
to
co
m
p
u
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th
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d
ep
en
d
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cies
o
f
v
alid
atio
n
m
o
d
el.
A
p
ar
t
f
r
o
m
th
i
s
,
w
e
h
av
e
n
o
t
u
s
ed
a
n
y
f
o
r
m
o
f
co
m
p
le
x
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cr
y
p
tio
n
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s
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g
e
f
o
r
w
h
ich
r
ea
s
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n
;
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e
p
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o
ce
s
s
i
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m
e
i
s
f
o
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n
d
to
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ig
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y
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w
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m
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it
h
th
e
e
x
is
t
in
g
s
y
s
te
m
as
s
h
o
w
n
in
Fig
u
r
e
5
(
a)
.
I
t
ca
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al
s
o
b
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ee
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t
h
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p
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