I
nte
rna
t
io
na
l J
o
urna
l o
f
E
lect
rica
l a
nd
Co
m
pu
t
er
E
ng
ineering
(
I
J
E
CE
)
Vo
l.
14
,
No
.
6
,
Dec
em
b
er
20
24
,
p
p
.
7
2
2
4
~
7
2
3
5
I
SS
N:
2088
-
8
7
0
8
,
DOI
:
1
0
.
1
1
5
9
1
/ijece.
v
14
i
6
.
pp
7
2
2
4
-
7
2
3
5
7224
J
o
ur
na
l ho
m
ep
a
g
e
:
h
ttp
:
//ij
ec
e.
ia
esco
r
e.
co
m
A
no
v
el secure
d o
pen standa
rd
fra
mewo
rk f
o
r
inter
net
o
f
things
a
pplica
tions
int
eg
ra
ting ellipti
c cur
v
e cr
y
ptog
ra
phy
and fog
co
mputing
K
rish
na
pu
ra
Sri
niv
a
s
a
Ra
v
ind
ra
1,
2
,
M
a
lo
de
Vis
hwa
na
t
h
a
P
a
nd
ura
ng
a
Ra
o
3
1
De
p
a
r
t
me
n
t
o
f
El
e
c
t
r
o
n
i
c
s
E
n
g
i
n
e
e
r
i
n
g
,
F
a
c
u
l
t
y
o
f
E
n
g
i
n
e
e
r
i
n
g
a
n
d
Te
c
h
n
o
l
o
g
y
,
JA
I
N
(
D
e
e
med
to
b
e
U
n
i
v
e
r
si
t
y
)
,
B
e
n
g
a
l
u
r
u
,
I
n
d
i
a
2
D
e
p
a
r
t
me
n
t
o
f
El
e
c
t
r
o
n
i
c
s a
n
d
C
o
m
mu
n
i
c
a
t
i
o
n
En
g
i
n
e
e
r
i
n
g
,
N
M
A
M
I
n
st
i
t
u
t
e
o
f
Te
c
h
n
o
l
o
g
y
,
N
I
TTE
(
D
e
e
m
e
d
t
o
b
e
U
n
i
v
e
r
s
i
t
y
)
,
N
i
t
t
e
,
I
n
d
i
a
3
D
e
p
a
r
t
me
n
t
o
f
C
o
m
p
u
t
e
r
S
c
i
e
n
c
e
a
n
d
E
n
g
i
n
e
e
r
i
n
g
,
F
a
c
u
l
t
y
o
f
E
n
g
i
n
e
e
r
i
n
g
a
n
d
T
e
c
h
n
o
l
o
g
y
,
JA
I
N
(
D
e
e
me
d
to
b
e
U
n
i
v
e
r
s
i
t
y
)
,
B
e
n
g
a
l
u
r
u
,
I
n
d
i
a
Art
icle
I
nfo
AB
S
T
RAC
T
A
r
ticle
his
to
r
y:
R
ec
eiv
ed
Ma
y
2
0
,
2
0
2
4
R
ev
is
ed
Au
g
4
,
2
0
2
4
Acc
ep
ted
Au
g
1
4
,
2
0
2
4
Th
e
i
n
tern
e
t
o
f
t
h
in
g
s
(I
o
T)
h
a
s
re
v
o
lu
ti
o
n
ize
d
v
a
rio
u
s
fiel
d
s
b
y
e
n
a
b
li
n
g
se
a
m
les
s
c
o
n
n
e
c
ti
v
it
y
a
n
d
d
a
t
a
e
x
c
h
a
n
g
e
a
m
o
n
g
n
u
m
e
ro
u
s
d
e
v
ice
s.
Ho
we
v
e
r,
th
is
in
terc
o
n
n
e
c
ti
v
it
y
in
tro
d
u
c
e
s
sig
n
ifi
c
a
n
t
se
c
u
rit
y
c
h
a
ll
e
n
g
e
s,
p
a
rti
c
u
larly
i
n
e
n
su
ri
n
g
d
a
ta
c
o
n
f
id
e
n
ti
a
li
t
y
,
i
n
teg
rit
y
,
a
n
d
a
u
th
e
n
ti
c
it
y
.
Th
is
stu
d
y
p
ro
p
o
se
s a
n
o
v
e
l
se
c
u
re
o
p
e
n
sta
n
d
a
rd
fra
m
e
wo
rk
f
o
r
Io
T
a
p
p
li
c
a
ti
o
n
s,
a
d
d
re
ss
in
g
th
e
se
c
h
a
ll
e
n
g
e
s
th
ro
u
g
h
t
h
e
i
n
teg
ra
ti
o
n
o
f
e
ll
i
p
ti
c
c
u
rv
e
c
ry
p
to
g
ra
p
h
y
(ECC)
a
n
d
fo
g
c
o
m
p
u
ti
n
g
.
Th
e
fra
m
e
wo
rk
c
o
n
sist
s
o
f
th
re
e
c
o
re
c
o
m
p
o
n
e
n
ts:
se
c
u
re
d
e
v
ice
re
g
istratio
n
,
d
a
ta
e
n
c
r
y
p
ti
o
n
wit
h
in
th
e
f
o
g
g
a
tew
a
y
,
a
n
d
a
ro
b
u
st
m
e
c
h
a
n
is
m
fo
r
d
e
tec
ti
n
g
m
a
n
-
in
-
th
e
-
m
id
d
le
(M
ITM
)
a
tt
a
c
k
s.
Th
e
u
n
iq
u
e
a
sp
e
c
t
o
f
th
e
p
ro
p
o
se
d
m
e
th
o
d
li
e
s
in
it
s
c
o
m
p
re
h
e
n
siv
e
a
p
p
ro
a
c
h
t
o
Io
T
se
c
u
rit
y
.
Util
i
z
in
g
ECC,
th
e
fra
m
e
wo
rk
e
n
su
re
s
se
c
u
re
c
o
m
m
u
n
ica
ti
o
n
a
m
o
n
g
re
so
u
r
c
e
c
o
n
stra
in
e
d
Io
T
d
e
v
ice
s,
b
a
lan
c
in
g
e
n
c
ry
p
ti
o
n
stre
n
g
th
a
n
d
e
fficie
n
c
y
.
Th
e
in
te
g
ra
ti
o
n
o
f
fo
g
c
o
m
p
u
t
i
n
g
re
d
u
c
e
s
late
n
c
y
a
n
d
e
n
h
a
n
c
e
s
p
ro
c
e
ss
in
g
e
fficie
n
c
y
b
y
o
ffl
o
a
d
i
n
g
i
n
ten
siv
e
tas
k
s
fro
m
Io
T
d
e
v
ice
s
to
th
e
fo
g
lay
e
r.
Th
e
M
ITM
a
tt
a
c
k
d
e
tec
ti
o
n
m
e
c
h
a
n
ism
c
o
n
ti
n
u
o
u
sly
m
o
n
it
o
rs
c
ry
p
t
o
g
r
a
p
h
ic
k
e
y
s
a
n
d
c
o
m
m
u
n
ica
ti
o
n
p
a
tt
e
rn
s,
p
ro
v
id
i
n
g
a
n
a
d
d
it
i
o
n
a
l
lay
e
r
o
f
s
e
c
u
rit
y
a
g
a
i
n
st
a
d
v
a
n
c
e
d
c
y
b
e
r
t
h
re
a
ts.
Th
e
sy
ste
m
wa
s imp
lem
e
n
ted
a
n
d
e
v
a
lu
a
ted
u
si
n
g
th
e
NS
-
3
.
2
6
n
e
two
r
k
sim
u
lato
r
a
n
d
P
y
t
h
o
n
f
o
r
d
a
ta
v
isu
a
li
z
a
ti
o
n
.
Th
e
e
x
p
e
rime
n
tal
se
t
u
p
in
c
l
u
d
e
d
1
0
0
Io
T
d
e
v
ice
s,
2
5
u
se
rs,
a
fo
g
g
a
tew
a
y
,
a
d
a
tac
e
n
ter,
a
n
d
a
c
l
o
u
d
se
rv
e
r.
Re
su
lt
s
d
e
m
o
n
stra
te
t
h
e
fra
m
e
wo
rk
'
s
s
c
a
lab
il
it
y
a
n
d
e
fficie
n
c
y
,
with
c
o
n
siste
n
t
th
ro
u
g
h
p
u
t
i
n
c
re
a
se
s
a
n
d
b
a
lan
c
e
d
p
o
we
r
c
o
n
su
m
p
ti
o
n
a
c
ro
ss
v
a
ry
in
g
Io
T
d
e
v
ice
n
u
m
b
e
rs.
K
ey
w
o
r
d
s
:
E
llip
tic
cu
r
v
e
cr
y
p
to
g
r
ap
h
y
Fo
g
co
m
p
u
tin
g
I
n
ter
n
et
o
f
th
in
g
s
L
ig
h
tweig
h
t c
r
y
p
to
g
r
a
p
h
y
Man
-
in
-
th
e
-
m
id
d
le
-
attac
k
n
etwo
r
k
s
ca
lab
ilit
y
T
h
is i
s
a
n
o
p
e
n
a
c
c
e
ss
a
rticle
u
n
d
e
r th
e
CC B
Y
-
SA
li
c
e
n
se
.
C
o
r
r
e
s
p
o
nd
ing
A
uth
o
r
:
Kr
is
h
n
ap
u
r
a
Srin
iv
asa
R
av
in
d
r
a
Dep
ar
tm
en
t o
f
E
lectr
o
n
ics an
d
C
o
m
m
u
n
icatio
n
E
n
g
in
ee
r
i
n
g
,
NM
AM
I
n
s
titu
te
o
f
T
ec
h
n
o
lo
g
y
,
NI
T
T
E
(
Dee
m
ed
to
b
e
Un
iv
er
s
ity
)
Nitte
5
7
4
1
1
0
,
Kar
n
atak
a
,
I
n
d
i
a
E
m
ail: r
av
in
d
r
a
k
s
@
g
m
ail.
co
m
1.
I
NT
RO
D
UCT
I
O
N
T
h
e
in
ter
n
et
o
f
th
i
n
g
s
(
I
o
T
)
h
as
em
er
g
ed
as
a
tr
a
n
s
f
o
r
m
ativ
e
f
o
r
ce
,
p
r
o
m
is
in
g
to
r
e
v
o
lu
ti
o
n
ize
h
o
w
we
in
ter
ac
t
with
th
e
wo
r
ld
ar
o
u
n
d
u
s
.
Sm
ar
t
h
o
m
es
an
d
cities,
in
d
u
s
tr
ial
au
to
m
atio
n
,
an
d
h
ea
lth
ca
r
e
ar
e
ju
s
t
a
f
ew
o
f
th
e
m
an
y
i
n
d
u
s
tr
ies
wh
er
e
I
o
T
tech
n
o
lo
g
ies
o
f
f
e
r
s
m
o
o
th
co
m
m
u
n
icatio
n
,
au
t
o
m
atio
n
,
an
d
d
ata
-
d
r
iv
en
d
ec
is
io
n
-
m
ak
in
g
b
y
lin
k
in
g
a
m
u
ltit
u
d
e
o
f
d
ev
ices,
s
en
s
o
r
s
,
an
d
s
y
s
tem
s
[
1
]
,
[
2
]
.
B
u
t
as
I
o
T
s
d
ev
ices
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
-
8
7
0
8
A
n
o
ve
l secu
r
ed
o
p
en
s
ta
n
d
a
r
d
fr
a
mewo
r
k
fo
r
in
tern
et
o
f th
in
g
s
…
(
K
r
is
h
n
a
p
u
r
a
S
r
in
iva
s
a
R
a
vin
d
r
a
)
7225
p
r
o
life
r
ate,
s
o
d
o
h
ith
e
r
to
u
n
s
ee
n
s
ec
u
r
ity
is
s
u
es
th
at
s
er
io
u
s
ly
jeo
p
ar
d
ize
s
y
s
tem
d
ep
en
d
a
b
ilit
y
,
in
teg
r
ity
,
an
d
d
ata
p
r
iv
ac
y
[
3
]
.
Giv
en
th
e
cir
cu
m
s
tan
ce
s
,
it
is
cr
u
cial
to
p
r
o
v
id
e
a
s
ec
u
r
e
an
d
u
n
iv
er
s
ally
ac
ce
p
ted
ar
ch
itectu
r
e
f
o
r
I
o
T
ap
p
licat
io
n
s
to
r
e
d
u
ce
th
e
r
is
k
o
f
s
ec
u
r
ity
b
r
ea
ch
es
an
d
b
u
ild
co
n
f
id
en
ce
in
I
o
T
ec
o
s
y
s
tem
s
.
An
ef
f
e
ctiv
e
f
r
am
ewo
r
k
m
u
s
t
p
r
io
r
itize
c
r
itical
s
ec
u
r
ity
co
n
s
id
er
atio
n
s
,
s
u
ch
as
d
e
v
ice
au
th
en
ticatio
n
,
d
ata
co
n
f
id
en
t
iality
,
in
teg
r
ity
p
r
o
tectio
n
,
an
d
r
esis
tan
ce
to
m
alicio
u
s
as
s
a
u
lts
.
B
y
o
f
f
er
in
g
a
u
n
if
o
r
m
m
eth
o
d
f
o
r
im
p
lem
e
n
tin
g
s
ec
u
r
ity
,
en
s
u
r
in
g
co
m
p
atib
ilit
y
,
an
d
m
ee
tin
g
r
eg
u
lato
r
y
r
eq
u
ir
e
m
en
ts
,
i
t
ca
n
p
r
o
m
o
te
wid
er
ac
ce
p
tan
ce
an
d
u
n
lo
ck
th
e
co
m
p
lete
ca
p
ab
ilit
ies
o
f
I
o
T
tech
n
o
lo
g
y
.
C
lo
u
d
co
m
p
u
tin
g
h
as
b
ee
n
a
h
u
g
e
s
u
cc
ess
,
r
eliev
in
g
clien
ts
o
f
c
o
m
p
u
tatio
n
ally
i
n
ten
s
iv
e
ac
tiv
ities
.
Ho
wev
er
,
in
s
itu
atio
n
s
wh
er
e
r
ed
u
cin
g
laten
cy
an
d
lim
itin
g
co
m
m
u
n
icatio
n
s
ar
e
cr
itical,
alter
n
ativ
e
p
ar
ad
ig
m
s
h
av
e
e
m
er
g
ed
b
y
m
o
v
in
g
clo
u
d
ca
p
ab
ilit
ies
to
th
e
n
et
wo
r
k
ed
g
e.
O
n
e
s
u
ch
p
ar
a
d
ig
m
,
f
o
g
c
o
m
p
u
tin
g
,
ex
ten
d
s
clo
u
d
c
o
m
p
u
tin
g
b
y
r
elo
ca
tin
g
a
p
o
r
tio
n
o
f
th
e
clo
u
d
'
s
co
m
p
u
tatio
n
al
an
d
c
o
m
m
u
n
icatio
n
ca
p
a
b
ilit
ies
n
ea
r
s
en
s
o
r
n
o
d
es.
Fig
u
r
e
1
in
d
icate
s
a
g
en
e
r
alize
d
I
o
T
f
o
g
co
m
p
u
tin
g
ar
c
h
itectu
r
e
wi
th
s
ev
er
al
co
n
s
id
er
atio
n
s
.
T
h
r
ee
in
d
ep
e
n
d
en
t
I
o
T
n
etwo
r
k
s
an
d
a
f
o
g
lay
e
r
,
w
h
ich
f
ac
ilit
ates
co
m
m
u
n
icatio
n
b
etwe
en
n
o
d
es
ac
r
o
s
s
th
e
n
et
wo
r
k
s
an
d
with
t
h
e
clo
u
d
,
co
m
p
r
is
e
th
e
d
escr
ib
ed
s
etu
p
.
T
h
e
b
id
ir
ec
tio
n
al
ar
r
o
ws
r
ep
r
esen
t
d
ata
f
lo
w
b
etwe
en
s
ev
er
al
elem
en
ts
.
T
h
e
d
esig
n
co
n
s
is
ts
o
f
th
r
ee
la
y
er
s
o
f
g
atew
ay
s
,
with
t
h
e
to
p
lay
er
s
er
v
i
n
g
as
t
h
e
p
r
in
cip
al
ac
ce
s
s
p
o
in
t
to
th
e
f
o
g
.
L
i
k
e
h
o
w
c
o
m
p
u
ter
s
d
esig
n
ca
ch
e
m
em
o
r
y
lev
els,
th
is
h
ier
ar
ch
ical
m
eth
o
d
aim
s
to
r
ed
u
ce
laten
cy
w
h
en
ac
ce
s
s
in
g
p
r
o
ce
s
s
o
r
m
em
o
r
y
.
Her
e,
th
e
lay
e
r
clo
s
est
to
th
e
I
o
T
n
o
d
es
r
esp
o
n
d
s
q
u
ic
k
ly
b
u
t
h
as
f
ewe
r
co
m
p
u
tin
g
an
d
m
em
o
r
y
r
eso
u
r
ce
s
.
I
n
th
e
c
o
n
tex
t
o
f
I
o
T
f
o
g
co
m
p
u
tin
g
,
tr
an
s
p
o
r
t
lay
er
s
ec
u
r
ity
(
T
L
S)
is
a
v
er
y
s
u
itab
le
ch
o
ice
f
o
r
g
u
ar
an
teein
g
s
af
e
c
o
m
m
u
n
icatio
n
s
.
Ho
wev
er
,
it
f
ac
es
c
h
allen
g
es
b
ec
au
s
e
t
h
e
in
itial
d
esig
n
o
f
s
ev
er
a
l
co
m
m
o
n
l
y
u
s
ed
s
tan
d
ar
d
cip
h
er
s
u
ites
d
id
n
o
t
ac
co
u
n
t
f
o
r
t
h
e
co
n
s
tr
ain
ts
o
f
d
ev
ices
with
lim
ited
r
eso
u
r
ce
s
an
d
b
atter
y
p
o
wer
.
T
h
e
m
ai
n
g
o
al
o
f
th
is
r
esear
ch
is
to
im
p
r
o
v
e
th
e
s
ec
u
r
ity
o
f
I
o
T
f
o
g
c
o
m
p
u
tin
g
g
atew
ay
s
th
at
h
av
e
lim
ited
r
eso
u
r
ce
s
an
d
ar
e
en
e
r
g
y
e
f
f
icien
t
.
Fig
u
r
e
1
.
I
o
T
f
o
g
co
m
p
u
tin
g
a
r
ch
itectu
r
e
T
h
e
o
b
jectiv
e
o
f
t
h
is
s
tu
d
y
is
to
r
ec
o
m
m
e
n
d
a
n
d
e
v
alu
ate
an
ex
te
n
s
iv
e
s
ec
u
r
ity
a
r
ch
itectu
r
e
s
p
ec
if
ically
d
esig
n
ed
f
o
r
I
o
T
f
o
g
co
m
p
u
tin
g
a
p
p
licatio
n
s
,
u
tili
zin
g
ad
v
an
ce
d
cr
y
p
to
g
r
a
p
h
ic
alg
o
r
ith
m
s
an
d
ar
ch
itectu
r
al
co
n
ce
p
ts
.
R
esear
ch
er
s
h
av
e
s
p
ec
if
ically
d
esig
n
ed
th
e
ar
ch
itectu
r
e
to
s
u
p
p
o
r
t
a
wid
e
r
an
g
e
o
f
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8
7
0
8
I
n
t J E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
14
,
No
.
6
,
Dec
em
b
e
r
20
24
:
7
2
2
4
-
7
2
3
5
7226
d
ep
lo
y
m
e
n
t
s
ce
n
ar
io
s
,
e
n
co
m
p
ass
in
g
v
ar
io
u
s
ty
p
es
o
f
I
o
T
d
ev
ices,
f
o
g
g
atew
ay
s
,
m
icr
o
-
d
atac
en
ter
s
,
a
n
d
clo
u
d
s
er
v
e
r
s
th
at
co
n
s
titu
te
a
d
iv
er
s
if
ied
ec
o
s
y
s
tem
[
4
]
.
Ou
r
g
o
al
is
to
im
p
lem
en
t
s
o
p
h
is
ticated
s
ec
u
r
ity
m
ea
s
u
r
es
at
ev
er
y
lev
el
o
f
th
e
I
o
T
in
f
r
astru
ct
u
r
e
t
o
cr
ea
te
a
s
tr
o
n
g
d
ef
e
n
s
e
-
in
-
d
e
p
th
a
p
p
r
o
ac
h
.
T
h
is
s
tr
ateg
y
will
p
r
o
tect
v
alu
ab
le
d
ata
an
d
s
y
s
tem
ass
e
ts
f
r
o
m
em
er
g
in
g
th
r
ea
ts
.
Ou
r
s
u
g
g
ested
s
y
s
tem
r
elies
o
n
th
e
im
p
lem
en
tatio
n
o
f
E
C
C
to
en
s
u
r
e
th
e
s
ec
u
r
ity
o
f
I
o
T
d
e
v
ice
co
n
n
ec
tio
n
s
[
5
]
.
E
C
C
h
as
v
ar
io
u
s
b
en
ef
its
co
m
p
ar
ed
t
o
co
n
v
en
tio
n
al
cr
y
p
to
g
r
ap
h
ic
tech
n
iq
u
es,
s
u
ch
as
r
ed
u
ce
d
k
ey
s
izes,
ac
ce
ler
ated
co
m
p
u
tatio
n
,
an
d
im
p
r
o
v
e
d
r
esil
ien
ce
ag
ain
s
t
q
u
an
tu
m
ass
au
lts
[
6
]
.
B
y
u
tili
zin
g
E
C
C
to
p
r
o
d
u
ce
c
r
y
p
to
g
r
ap
h
ic
k
ey
s
,
en
cr
y
p
tio
n
,
an
d
au
th
e
n
ticatio
n
,
o
n
e
m
ay
s
tr
ik
e
a
h
ar
m
o
n
io
u
s
eq
u
ilib
r
iu
m
b
etwe
en
s
ec
u
r
i
ty
an
d
th
e
ef
f
icien
t
u
tili
za
tio
n
o
f
r
eso
u
r
ce
s
.
T
h
is
m
ak
es
E
C
C
p
ar
ticu
lar
ly
s
u
itab
le
f
o
r
I
o
T
s
itu
atio
n
s
th
at
h
av
e
lim
ited
r
eso
u
r
ce
s
[
7
]
.
I
n
p
r
o
p
o
s
ed
ar
ch
itectu
r
e,
i
n
itially
en
r
o
ll
I
o
T
d
ev
ices
b
y
ass
ig
n
in
g
th
em
d
is
tin
ct
I
Ds
an
d
p
r
o
d
u
cin
g
p
u
b
lic
an
d
p
r
iv
ate
k
ey
s
u
s
in
g
E
C
C
.
T
h
e
r
eg
is
tr
atio
n
p
r
o
ce
d
u
r
e
cr
ea
tes
a
tr
u
s
t
co
n
n
ec
tio
n
b
etw
ee
n
th
e
d
ev
ices
an
d
th
e
ce
n
tr
al
ad
m
in
is
tr
atio
n
in
f
r
astru
ctu
r
e,
allo
win
g
f
o
r
s
e
cu
r
e
c
o
m
m
u
n
icatio
n
a
n
d
th
e
ex
ch
a
n
g
e
o
f
d
ata.
Ad
d
itio
n
ally
,
t
h
e
f
o
g
g
atew
a
y
en
c
r
y
p
ts
all
c
o
llected
d
ata
u
s
in
g
E
C
C
b
ef
o
r
e
s
en
d
i
n
g
it
to
th
e
clo
u
d
s
er
v
er
.
T
h
is
g
u
ar
an
tees
th
at
t
h
e
d
at
a
r
em
ain
s
s
ec
r
et
an
d
p
r
o
tecte
d
f
r
o
m
an
y
tam
p
er
i
n
g
th
r
o
u
g
h
o
u
t
th
e
wh
o
le
tr
an
s
m
is
s
io
n
p
r
o
ce
s
s
.
T
o
im
p
r
o
v
e
th
e
s
ec
u
r
ity
o
f
p
r
o
p
o
s
ed
f
r
am
ewo
r
k
,
in
th
is
m
e
th
o
d
im
p
le
m
en
ted
m
ea
s
u
r
es
to
id
en
tify
an
d
co
u
n
ter
ac
t
m
an
-
in
-
th
e
-
m
id
d
le
(
MI
T
M)
attac
k
s
[
8
]
th
at
m
ay
o
cc
u
r
d
u
r
i
n
g
th
e
tr
a
n
s
f
er
o
f
d
ata.
Ou
r
tech
n
o
lo
g
y
m
ay
d
etec
t
illeg
al
in
ter
ce
p
tio
n
o
r
tam
p
e
r
in
g
atte
m
p
ts
b
y
m
o
n
ito
r
in
g
th
e
in
te
g
r
i
ty
o
f
cr
y
p
to
g
r
ap
h
ic
k
ey
s
an
d
an
aly
zin
g
co
m
m
u
n
i
ca
tio
n
p
atter
n
s
f
o
r
a
n
o
m
alies.
MI
T
M
attac
k
s
ca
n
b
e
s
to
p
p
e
d
q
u
ic
k
ly
b
y
tak
in
g
s
tep
s
lik
e
ch
an
g
in
g
en
cr
y
p
tio
n
k
e
y
s
o
r
is
o
latin
g
th
e
a
f
f
ec
te
d
n
etwo
r
k
[
9
]
.
T
h
is
s
to
p
s
p
eo
p
le
f
r
o
m
g
ettin
g
to
y
o
u
r
d
ata
with
o
u
t
y
o
u
r
p
er
m
is
s
io
n
an
d
k
ee
p
s
s
er
v
ice
i
n
ter
r
u
p
tio
n
s
to
a
m
in
im
u
m
.
Asi
d
e
f
r
o
m
s
ec
u
r
ity
co
n
ce
r
n
s
,
o
u
r
ar
ticle
also
ex
am
in
es
th
e
p
e
r
f
o
r
m
an
ce
r
am
i
f
icatio
n
s
o
f
u
s
in
g
th
e
s
u
g
g
es
ted
ar
ch
itectu
r
e
in
ac
tu
al
I
o
T
s
ettin
g
s
.
Ass
ess
e
d
im
p
o
r
ta
n
t
m
ea
s
u
r
es
s
u
ch
as
p
o
wer
co
n
s
u
m
p
tio
n
,
r
eso
u
r
ce
u
s
ag
e,
e
n
er
g
y
ef
f
icien
cy
,
en
d
-
to
-
en
d
d
elay
,
an
d
th
r
o
u
g
h
p
u
t
ac
r
o
s
s
d
if
f
e
r
en
t
s
izes
o
f
I
o
T
d
e
p
lo
y
m
e
n
ts
.
Ou
r
g
o
al
is
to
esti
m
ate
th
e
ad
d
itio
n
al
co
s
ts
in
cu
r
r
e
d
b
y
s
ec
u
r
ity
m
ea
s
u
r
es
to
p
r
o
v
id
e
a
b
etter
u
n
d
e
r
s
tan
d
in
g
o
f
th
e
b
alan
ce
b
etwe
en
s
ec
u
r
ity
a
n
d
s
y
s
tem
p
er
f
o
r
m
an
ce
.
T
h
is
will
h
elp
d
ec
is
io
n
-
m
ak
er
s
m
ak
e
well
-
in
f
o
r
m
ed
c
h
o
ices
wh
en
im
p
lem
en
tin
g
s
ec
u
r
ity
m
ea
s
u
r
es.
T
h
e
r
ap
id
ex
p
an
s
io
n
o
f
th
e
I
o
T
h
as
r
esu
lted
in
an
u
n
p
ar
alleled
in
cr
ea
s
e
in
th
e
n
u
m
b
er
o
f
in
ter
co
n
n
ec
ted
d
e
v
ices
in
d
iv
e
r
s
e
f
ield
s
,
in
clu
d
in
g
s
m
ar
t
h
o
m
es,
cities,
in
d
u
s
tr
ial
a
u
to
m
at
io
n
,
a
n
d
h
ea
lth
ca
r
e.
W
h
ile
th
e
in
ter
co
n
n
ec
tio
n
o
f
s
y
s
tem
s
p
r
esen
ts
s
ig
n
if
ican
t
ad
v
an
tag
es
in
te
r
m
s
o
f
e
f
f
ec
tiv
en
ess
,
co
n
v
en
ien
ce
,
an
d
cr
ea
tiv
ity
,
it
also
p
r
esen
ts
n
u
m
er
o
u
s
s
ec
u
r
ity
o
b
s
tacle
s
th
at
d
em
an
d
atten
tio
n
.
T
h
er
e
f
o
r
e,
u
r
g
en
tly
n
ee
d
a
s
af
e
an
d
s
tan
d
ar
d
ized
a
r
ch
it
ec
tu
r
e
s
p
ec
if
ically
f
o
r
I
o
T
ap
p
licatio
n
s
.
T
h
e
p
r
im
ar
y
s
o
u
r
ce
o
f
s
ec
u
r
ity
v
u
ln
er
ab
ilit
ies
in
I
o
T
ec
o
s
y
s
t
em
s
ar
is
es
f
r
o
m
th
e
ex
ten
s
iv
e
n
u
m
b
er
a
n
d
d
i
v
er
s
e
n
atu
r
e
o
f
in
ter
co
n
n
ec
ted
d
ev
ices
[
1
0
]
.
Giv
en
th
e
p
r
o
je
cted
n
u
m
b
er
o
f
I
o
T
d
ev
ices
i
n
u
s
e,
it
i
s
cr
itical
to
u
n
d
er
s
tan
d
th
at
i
n
d
iv
id
u
als
with
m
alev
o
len
t
i
n
ten
t
m
a
y
t
ar
g
et
ea
ch
d
ev
ice,
aim
in
g
to
ex
p
lo
it
wea
k
n
ess
es
an
d
co
m
p
r
o
m
is
e
th
e
s
y
s
tem
'
s
o
v
er
all
s
ec
u
r
ity
.
Or
ig
in
ally
d
esig
n
ed
f
o
r
tr
ad
itio
n
al
co
m
p
u
tin
g
s
y
s
tem
s
,
co
n
v
en
tio
n
al
s
ec
u
r
ity
ap
p
r
o
ac
h
es
ty
p
ically
f
ail
to
ad
eq
u
ately
m
ee
t
th
e
s
p
ec
if
ic
n
ee
d
s
an
d
li
m
itatio
n
s
o
f
I
o
T
im
p
lem
e
n
tatio
n
s
.
C
o
n
s
eq
u
en
tly
,
th
er
e
is
a
p
r
ess
in
g
r
eq
u
ir
em
e
n
t
f
o
r
u
n
i
f
o
r
m
s
ec
u
r
ity
s
tan
d
ar
d
s
[
1
1
]
,
p
r
o
ce
d
u
r
es,
an
d
o
p
tim
al
s
tr
ateg
ies
to
r
ed
u
ce
r
is
k
s
an
d
g
u
ar
an
tee
th
e
r
eliab
ilit
y
o
f
I
o
T
s
y
s
tem
s
.
Mo
r
eo
v
er
,
th
e
ab
s
en
ce
o
f
c
o
n
s
is
ten
cy
in
s
ec
u
r
ity
m
ea
s
u
r
es
am
o
n
g
v
a
r
io
u
s
I
o
T
p
latf
o
r
m
s
an
d
m
an
u
f
ac
t
u
r
er
s
in
ten
s
if
ies
th
e
d
if
f
icu
lties
in
ac
h
iev
in
g
in
ter
o
p
er
a
b
ilit
y
an
d
o
b
s
tr
u
cts
th
e
s
m
o
o
th
in
teg
r
atio
n
o
f
I
o
T
s
o
lu
tio
n
s
.
W
ith
o
u
t
e
s
tab
lis
h
ed
s
ec
u
r
ity
f
r
am
ewo
r
k
s
,
d
ev
elo
p
er
s
an
d
s
y
s
tem
in
teg
r
ato
r
s
h
av
e
p
r
o
b
lem
s
with
in
ter
o
p
er
ab
ilit
y
,
f
r
ag
m
en
tatio
n
,
a
n
d
v
en
d
o
r
lo
ck
-
in
,
wh
ich
im
p
ed
e
th
e
s
ca
lab
ilit
y
an
d
ac
ce
p
ta
n
ce
o
f
I
o
T
tec
h
n
o
lo
g
y
[
1
2
]
.
An
o
p
e
n
s
tan
d
ar
d
f
r
am
ewo
r
k
f
ac
ilit
ates
th
e
ex
c
h
an
g
e
o
f
s
ec
u
r
ity
s
p
ec
if
icatio
n
s
an
d
in
ter
f
ac
es
am
o
n
g
v
ar
io
u
s
I
o
T
co
m
p
o
n
e
n
ts
,
p
r
o
m
o
tin
g
in
ter
o
p
er
a
b
ilit
y
a
n
d
en
c
o
u
r
a
g
in
g
co
llab
o
r
atio
n
with
in
th
e
ec
o
s
y
s
tem
.
Fu
r
t
h
er
m
o
r
e
,
th
e
ev
er
-
ch
an
g
in
g
n
at
u
r
e
o
f
I
o
T
en
v
ir
o
n
m
en
ts
,
w
h
ich
a
r
e
d
ef
in
ed
b
y
o
cc
asio
n
al
co
n
n
ec
tiv
ity
,
lim
ited
r
eso
u
r
ce
s
,
an
d
s
ca
tter
ed
d
ata
p
r
o
ce
s
s
in
g
,
p
r
esen
ts
d
is
tin
ct
s
ec
u
r
ity
co
n
ce
r
n
s
th
at
r
eq
u
i
r
e
cu
s
to
m
iz
ed
s
o
lu
tio
n
s
[
1
3
]
.
Dis
p
er
s
ed
an
d
r
eso
u
r
ce
lim
ited
I
o
T
d
ep
lo
y
m
en
ts
m
ay
n
o
t
s
u
it
co
n
v
en
tio
n
al
s
ec
u
r
ity
m
eth
o
d
s
s
u
ch
as
p
er
im
eter
p
r
o
tectio
n
a
n
d
ce
n
t
r
alize
d
au
th
en
ticatio
n
.
Hen
ce
,
it
is
im
p
er
ativ
e
f
o
r
a
s
tan
d
ar
d
ized
f
r
am
ew
o
r
k
t
o
in
co
r
p
o
r
ate
d
ec
e
n
tr
alize
d
tr
u
s
t
m
o
d
els,
lig
h
tweig
h
t
cr
y
p
t
o
g
r
ap
h
ic
alg
o
r
ith
m
s
,
an
d
ad
a
p
tiv
e
s
ec
u
r
ity
r
u
les
to
ca
ter
to
th
e
v
a
r
ied
r
e
q
u
ir
em
en
t
s
o
f
I
o
T
a
p
p
licatio
n
s
.
An
o
th
er
c
r
u
cial
asp
ec
t
d
r
iv
in
g
th
e
n
ee
d
f
o
r
a
s
ec
u
r
e
d
o
p
e
n
s
tan
d
ar
d
f
r
a
m
ewo
r
k
is
th
e
in
cr
ea
s
in
g
r
eg
u
lato
r
y
s
cr
u
tin
y
a
n
d
p
r
iv
ac
y
co
n
ce
r
n
s
s
u
r
r
o
u
n
d
in
g
I
o
T
d
ata
co
llectio
n
,
p
r
o
ce
s
s
in
g
,
an
d
s
h
ar
in
g
p
r
ac
tices
[
1
4
]
.
W
ith
th
e
ac
c
u
m
u
latio
n
o
f
s
u
b
s
tan
tial
q
u
a
n
titi
es
o
f
s
en
s
itiv
e
d
ata
f
r
o
m
v
ar
io
u
s
s
o
u
r
ce
s
,
s
u
ch
as
p
e
r
s
o
n
al
d
ev
ices,
s
en
s
o
r
s
,
an
d
ac
tu
ato
r
s
,
it
b
ec
o
m
es
cr
u
cial
to
p
r
io
r
itize
co
m
p
lian
ce
with
p
r
iv
ac
y
leg
is
latio
n
an
d
th
e
p
r
o
tectio
n
o
f
u
s
er
d
ata.
I
m
p
le
m
en
tin
g
a
s
tan
d
a
r
d
ized
f
r
am
e
wo
r
k
m
ay
o
f
f
e
r
clea
r
d
i
r
ec
tio
n
o
n
s
af
e
g
u
ar
d
i
n
g
d
ata,
m
an
a
g
in
g
p
er
m
is
s
io
n
,
an
d
em
p
lo
y
in
g
ap
p
r
o
ac
h
es
t
h
at
p
r
eser
v
e
p
r
i
v
ac
y
.
T
h
is
,
in
tu
r
n
,
im
p
r
o
v
es
tr
an
s
p
ar
en
cy
,
ac
c
o
u
n
ta
b
ilit
y
,
an
d
u
s
er
co
n
f
id
en
ce
in
th
e
im
p
lem
en
tatio
n
o
f
I
o
T
s
y
s
tem
s
.
Fu
r
th
er
m
o
r
e
,
th
e
r
is
e
o
f
n
ew
attac
k
m
eth
o
d
s
a
n
d
co
m
p
lex
d
an
g
er
s
th
at
s
p
ec
if
i
ca
lly
tar
g
et
I
o
T
d
ev
ices
h
ig
h
lig
h
ts
th
e
n
ee
d
f
o
r
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
-
8
7
0
8
A
n
o
ve
l secu
r
ed
o
p
en
s
ta
n
d
a
r
d
fr
a
mewo
r
k
fo
r
in
tern
et
o
f th
in
g
s
…
(
K
r
is
h
n
a
p
u
r
a
S
r
in
iva
s
a
R
a
vin
d
r
a
)
7227
im
m
ed
iate
im
p
lem
en
tatio
n
o
f
s
ec
u
r
ity
m
ea
s
u
r
es
an
d
th
e
s
h
ar
in
g
o
f
in
tellig
en
ce
o
n
p
o
ten
tial
th
r
ea
ts
.
I
o
T
d
ev
ices
ar
e
b
ec
o
m
in
g
m
o
r
e
an
d
m
o
r
e
attr
ac
tiv
e
to
h
ac
k
e
r
s
wh
o
aim
to
d
is
r
u
p
t
o
p
er
at
io
n
s
,
s
teal
s
en
s
i
tiv
e
in
f
o
r
m
atio
n
,
o
r
u
n
d
er
m
in
e
v
it
al
in
f
r
astru
ctu
r
e.
T
h
ey
tar
g
et
t
h
ese
d
ev
ices
u
s
in
g
m
eth
o
d
s
s
u
ch
as
r
an
s
o
m
war
e
[
1
5
]
,
b
o
tn
ets
[
1
6
]
,
s
u
p
p
ly
c
h
a
in
attac
k
s
[
1
7
]
,
an
d
ze
r
o
-
d
ay
[
1
8
]
v
u
ln
er
a
b
ilit
ies.
B
y
em
b
r
ac
in
g
a
tr
an
s
p
ar
e
n
t
an
d
wid
ely
ac
ce
p
te
d
f
r
am
ewo
r
k
th
at
is
b
ac
k
ed
b
y
a
c
o
o
p
er
ativ
e
s
ec
u
r
ity
n
etwo
r
k
,
all
p
a
r
ties
in
v
o
lv
ed
m
a
y
wo
r
k
to
g
eth
er
to
tack
le
n
e
w
r
is
k
s
,
ex
ch
an
g
e
in
f
o
r
m
ati
o
n
ab
o
u
t
p
o
ten
tial
attac
k
s
,
an
d
u
tili
ze
s
ec
u
r
ity
im
p
r
o
v
em
e
n
ts
p
u
s
h
ed
b
y
th
e
c
o
m
m
u
n
ity
to
o
u
tp
ac
e
th
eir
o
p
p
o
n
en
ts
.
T
h
is
s
tu
d
y
attem
p
ts
to
tac
k
le
im
p
o
r
ta
n
t
is
s
u
es
r
elate
d
to
I
o
T
s
ec
u
r
ity
,
p
er
f
o
r
m
an
ce
,
an
d
s
tan
d
ar
d
izatio
n
.
Firstl
y
,
p
r
o
p
o
s
ed
a
th
o
r
o
u
g
h
ly
s
ec
u
r
ed
o
p
en
s
tan
d
ar
d
f
r
am
ewo
r
k
s
p
ec
if
ically
f
o
r
I
o
T
ap
p
licatio
n
s
.
T
h
is
ap
p
r
o
ac
h
a
d
d
r
ess
es
th
e
u
r
g
en
t
s
ec
u
r
ity
is
s
u
es
in
h
er
en
t
in
I
o
T
ec
o
s
y
s
te
m
s
,
in
clu
d
in
g
d
ev
ice
au
th
en
ticatio
n
,
d
ata
co
n
f
id
en
t
iality
,
in
teg
r
ity
p
r
o
tectio
n
,
an
d
r
esis
tan
ce
to
m
alicio
u
s
att
ac
k
s
.
T
h
r
o
u
g
h
th
e
cr
ea
tio
n
o
f
a
u
n
if
o
r
m
m
et
h
o
d
o
lo
g
y
f
o
r
s
ec
u
r
ity
im
p
lem
e
n
ta
tio
n
,
in
ter
o
p
er
a
b
ilit
y
,
a
n
d
c
o
m
p
lian
ce
,
e
x
p
ec
tin
g
to
r
ed
u
ce
a
n
y
h
az
ar
d
s
an
d
v
u
ln
e
r
ab
ilit
ies
r
elate
d
t
o
t
h
e
s
p
r
ea
d
o
f
I
o
T
d
ev
ices,
in
ter
o
p
er
a
b
ilit
y
,
a
n
d
co
m
p
lian
ce
,
th
u
s
p
r
o
m
o
tin
g
c
o
n
f
id
en
ce
am
o
n
g
in
ter
ested
p
ar
ties
.
Seco
n
d
,
th
e
w
o
r
k
atte
m
p
ts
to
d
em
o
n
s
tr
ate,
b
y
th
o
r
o
u
g
h
test
in
g
an
d
an
aly
s
is
,
th
e
p
r
ac
tical
v
iab
ilit
y
an
d
ef
f
ec
tiv
en
ess
o
f
th
e
s
u
g
g
ested
f
r
am
ewo
r
k
.
Aim
ed
to
g
iv
e
em
p
ir
ical
p
r
o
o
f
t
h
at
th
e
f
r
am
ewo
r
k
is
ef
f
ec
tiv
e
in
p
r
o
tectin
g
I
o
T
ap
p
licati
o
n
s
wh
ile
r
ed
u
cin
g
p
er
f
o
r
m
an
ce
o
v
er
h
ea
d
b
y
d
ep
lo
y
in
g
it
in
r
ea
l
-
w
o
r
ld
I
o
T
en
v
ir
o
n
m
e
n
ts
an
d
ass
ess
in
g
im
p
o
r
tan
t
p
er
f
o
r
m
a
n
ce
m
etr
ics
in
clu
d
in
g
p
o
wer
c
o
n
s
u
m
p
tio
n
,
r
eso
u
r
ce
u
tili
za
tio
n
,
en
e
r
g
y
ef
f
icien
cy
,
en
d
-
to
-
en
d
d
elay
,
a
n
d
th
r
o
u
g
h
p
u
t.
Ad
d
itio
n
ally
,
th
e
wo
r
k
lo
o
k
s
at
n
ew
m
eth
o
d
s
f
o
r
r
e
d
u
cin
g
MI
T
M
th
r
ea
ts
d
u
r
in
g
d
ata
tr
an
s
f
er
to
ad
d
to
th
e
lar
g
er
co
n
v
er
s
atio
n
o
n
I
o
T
s
ec
u
r
ity
.
T
h
e
g
o
al
o
f
th
is
ap
p
r
o
ac
h
is
to
im
p
r
o
v
e
th
e
r
esis
tan
ce
o
f
I
o
T
s
y
s
tem
s
ag
ain
s
t
ef
f
o
r
ts
at
m
an
ip
u
latio
n
an
d
illeg
al
in
ter
ce
p
tio
n
b
y
in
clu
d
in
g
tech
n
iq
u
es
f
o
r
id
en
tify
i
n
g
an
d
p
r
ev
en
tin
g
MI
T
M
attac
k
s
in
s
id
e
th
e
s
u
g
g
ested
a
r
ch
itectu
r
e.
T
o
ass
ess
th
e
ef
f
icien
cy
o
f
th
ese
m
itig
atio
n
s
tr
ateg
ies
in
p
r
ev
en
tin
g
d
i
f
f
er
en
t
MI
T
M
attac
k
s
ce
n
ar
io
s
an
d
m
ain
tain
in
g
th
e
i
n
teg
r
ity
an
d
co
n
f
id
e
n
tiality
o
f
I
o
T
d
ata
b
y
em
p
ir
ical
an
aly
s
is
an
d
s
im
u
latio
n
.
T
h
e
m
ai
n
ai
m
o
f
th
is
wo
r
k
is
to
a
d
v
an
ce
t
h
e
s
tate
-
of
-
th
e
-
ar
t
in
I
o
T
s
ec
u
r
ity
,
p
er
f
o
r
m
an
ce
,
an
d
s
tan
d
ar
d
izatio
n
.
Aim
o
f
th
i
s
r
esear
ch
is
to
s
u
p
p
o
r
t
th
e
cr
ea
tio
n
o
f
r
eliab
le,
in
ter
o
p
er
a
b
le,
an
d
tr
u
s
two
r
th
y
I
o
T
ec
o
s
y
s
tem
s
b
y
cr
ea
tin
g
a
n
d
ass
ess
in
g
a
s
af
e
o
p
en
s
tan
d
ar
d
f
r
am
ewo
r
k
,
as
well
as
th
e
em
p
ir
ical
e
x
am
in
a
tio
n
o
f
im
p
o
r
tan
t
s
ec
u
r
ity
m
et
h
o
d
s
an
d
p
e
r
f
o
r
m
an
ce
i
n
d
icat
o
r
s
.
B
y
p
r
o
m
o
tin
g
co
o
p
er
atio
n
,
s
tan
d
ar
d
izatio
n
,
an
d
k
n
o
wled
g
e
ex
c
h
an
g
e,
t
h
e
aim
is
to
s
tim
u
late
cr
ea
tiv
ity
an
d
en
co
u
r
ag
e
th
e
wid
esp
r
ea
d
u
s
e
o
f
s
af
e
a
n
d
d
e
p
en
d
ab
le
I
o
T
tech
n
o
lo
g
y
.
2.
RE
L
AT
E
D
WO
RK
S
T
h
e
liter
atu
r
e
h
as
d
e
v
elo
p
ed
n
u
m
er
o
u
s
s
ec
u
r
ity
s
tan
d
ar
d
s
,
ass
es
s
m
en
t
f
r
am
ewo
r
k
s
,
a
n
d
s
p
ec
ial
p
u
b
licatio
n
s
o
n
s
ec
u
r
ity
tech
n
iq
u
es
to
ad
d
r
ess
v
ar
i
o
u
s
asp
ec
ts
o
f
cy
b
er
s
ec
u
r
ity
ac
r
o
s
s
d
if
f
er
en
t
en
v
ir
o
n
m
e
n
ts
.
T
h
ese
m
ater
ials
p
r
o
v
id
e
r
ec
o
m
m
en
d
atio
n
s
,
id
ea
l
p
r
ac
tices,
an
d
ap
p
r
o
ac
h
es
f
o
r
p
u
ttin
g
i
n
to
p
lace
ef
f
icien
t
s
ec
u
r
ity
m
ea
s
u
r
es
to
s
af
eg
u
ar
d
d
ig
ital
ass
ets,
r
ed
u
ce
r
is
k
s
,
an
d
g
u
ar
a
n
tee
ad
h
er
e
n
ce
to
leg
al
o
b
lig
atio
n
s
.
T
h
er
ef
o
r
e,
it'
s
cr
u
cial
to
k
ee
p
in
m
in
d
th
at
th
ese
s
ec
u
r
ity
s
tan
d
ar
d
s
an
d
ev
alu
atio
n
f
r
am
ewo
r
k
s
,
tailo
r
ed
to
s
p
ec
if
ic
ap
p
licatio
n
d
o
m
ain
s
o
r
in
d
u
s
tr
ial
s
ec
to
r
s
,
o
f
ten
m
ir
r
o
r
th
e
u
n
iq
u
e
s
ec
u
r
ity
an
d
r
e
g
u
lato
r
y
c
h
allen
g
es
in
h
er
en
t in
ea
c
h
en
v
ir
o
n
m
en
t.
Acc
o
r
d
in
g
to
r
esear
ch
b
y
Hin
d
u
ja
an
d
Pan
d
ey
[
1
9
]
,
th
e
e
x
p
o
n
en
tial
e
x
p
an
s
io
n
o
f
I
o
T
-
b
as
ed
s
y
s
tem
s
h
as
in
ten
s
if
ied
s
ec
u
r
ity
ap
p
r
e
h
en
s
io
n
s
,
u
n
d
er
s
co
r
i
n
g
t
h
e
cr
itical
n
ee
d
f
o
r
a
s
ec
u
r
ity
ass
ess
m
en
t
f
r
am
ewo
r
k
tailo
r
ed
s
p
ec
if
ically
f
o
r
I
o
T
s
y
s
tem
s
.
T
h
e
au
th
o
r
s
in
tr
o
d
u
c
ed
an
e
v
alu
atio
n
p
ar
ad
ig
m
th
at
clo
s
ely
ex
am
in
es
th
e
s
ec
u
r
ity
f
ea
tu
r
es
o
f
I
o
T
-
b
ased
d
ev
ices.
T
h
is
p
r
o
p
o
s
ed
ap
p
r
o
ac
h
allo
ws
f
o
r
a
th
o
r
o
u
g
h
ass
ess
m
en
t
o
f
s
ec
u
r
ity
f
ac
to
r
s
u
s
in
g
a
h
y
b
r
id
m
u
lti
-
cr
iter
ia
d
ec
is
io
n
-
m
a
k
in
g
(
MCDM)
m
et
h
o
d
o
lo
g
y
.
T
h
en
,
u
s
in
g
th
eir
d
ev
elo
p
e
d
m
eth
o
d
o
lo
g
y
,
th
e
r
esear
ch
er
s
ca
r
r
ied
o
u
t a
n
em
p
i
r
ical
in
v
esti
g
atio
n
to
ev
alu
ate
th
e
s
ec
u
r
ity
o
f
I
o
T
-
b
ased
h
ea
lth
ca
r
e
d
ev
ices.
R
esear
ch
er
s
em
p
h
asize
th
e
r
ea
l
-
tim
e
tr
ac
k
in
g
o
f
p
r
o
d
u
cts,
in
f
o
r
m
atio
n
m
an
ag
em
en
t,
an
d
s
tatu
s
m
o
n
ito
r
in
g
ca
p
a
b
ilit
ies
o
f
I
o
T
tech
n
o
l
o
g
y
f
o
r
in
v
e
n
to
r
y
au
to
m
atio
n
[
2
0
]
.
Nev
er
th
eless
,
a
s
tr
o
n
g
s
ec
u
r
ity
f
r
am
ew
o
r
k
is
ess
en
tial
to
g
u
ar
an
tee
au
t
h
en
ticatio
n
,
au
th
o
r
izatio
n
,
in
te
g
r
ity
,
an
d
co
n
f
i
d
en
tiality
o
f
th
e
s
en
t
d
ata
b
ec
au
s
e
o
f
th
e
d
ata
f
lo
w
am
o
n
g
lin
k
ed
d
ev
ices
in
s
id
e
s
u
ch
n
etwo
r
k
s
.
T
o
o
v
er
co
m
e
t
h
is
is
s
u
e,
th
e
au
th
o
r
s
p
r
o
p
o
s
e
a
lig
h
tweig
h
t
s
ec
u
r
ity
ev
alu
atio
n
f
r
am
ewo
r
k
s
p
ec
if
ically
f
o
r
in
v
en
to
r
y
au
to
m
ati
o
n
u
s
in
g
wir
eless
s
en
s
o
r
n
etwo
r
k
s
.
R
ec
en
tly
,
E
b
ad
i
n
ez
h
ad
an
d
M
o
b
o
l
ad
e
[
2
1
]
p
r
esen
te
d
a
n
o
v
el
cl
o
u
d
-
b
ased
r
em
o
te
p
a
tien
t
m
o
n
ito
r
in
g
s
y
s
tem
f
o
r
in
ter
n
et
o
f
th
i
n
g
s
h
ea
lth
d
et
ec
tio
n
.
T
h
e
r
esu
lts
r
ev
ea
led
s
ig
n
if
ica
n
t
im
p
r
o
v
e
m
en
ts
in
p
atie
n
t
h
a
p
p
in
ess
,
d
ata
tr
an
s
m
is
s
io
n
s
ec
u
r
ity
,
a
n
d
g
en
er
al
h
ea
lth
ca
r
e
o
u
tco
m
es.
E
s
p
ec
ially
at
d
ec
is
io
n
tim
e,
th
e
s
tu
d
y
s
h
o
wed
th
at
th
e
s
u
g
g
ested
f
r
am
ewo
r
k
was
m
o
r
e
ef
f
icien
t
th
an
o
th
er
m
eth
o
d
s
.
Mo
r
e
p
r
e
cisely
,
au
th
o
r
s
ac
h
iev
ed
a
p
h
e
n
o
m
en
al
ac
cu
r
ac
y
r
ate
o
f
1
0
0
%
with
a
d
ec
is
io
n
tim
e
o
f
1
6
.
3
s
ec
o
n
d
s
f
o
r
p
r
o
ce
s
s
in
g
4
6
f
ea
tu
r
es
[
2
2
]
.
T
h
ese
f
in
d
in
g
s
d
em
o
n
s
tr
ate
n
o
ta
b
le
p
r
o
g
r
ess
in
th
e
f
ield
o
f
r
em
o
te
p
atien
t
m
o
n
ito
r
in
g
an
d
s
h
o
w
h
o
w
I
o
T
-
e
n
ab
l
ed
tech
n
o
lo
g
ies
m
ay
im
p
r
o
v
e
p
atien
t
ca
r
e
an
d
h
ea
lth
ca
r
e
d
eliv
er
y
.
I
n
th
e
ir
w
o
r
k
,
C
h
atter
jee
et
a
l
.
[
2
3
]
d
esig
n
e
d
a
n
ew
lig
h
twe
ig
h
t
r
em
o
te
u
s
er
au
th
e
n
ticatio
n
an
d
k
ey
m
an
ag
em
en
t
s
y
s
tem
b
ased
o
n
E
C
C
s
p
ec
if
ically
f
o
r
I
o
T
co
m
m
u
n
icatio
n
with
in
th
e
f
o
g
co
m
p
u
tin
g
f
r
am
ewo
r
k
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8
7
0
8
I
n
t J E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
14
,
No
.
6
,
Dec
em
b
e
r
20
24
:
7
2
2
4
-
7
2
3
5
7228
T
h
e
wo
r
k
ad
d
r
ess
es
th
e
f
laws
in
au
th
en
ticatio
n
tech
n
iq
u
e
to
en
h
an
ce
th
e
ef
f
ec
tiv
e
n
ess
an
d
s
ec
u
r
ity
o
f
au
th
en
ticatio
n
s
y
s
tem
s
in
f
o
g
-
ce
n
tr
ic
I
o
T
en
v
ir
o
n
m
en
ts
.
T
h
e
au
th
o
r
s
tr
y
to
r
e
m
o
v
e
th
e
s
ev
er
al
s
ec
u
r
ity
f
laws
an
d
r
estrictio
n
s
p
r
esen
t
in
th
e
cu
r
r
en
t
f
r
am
ew
o
r
k
u
s
in
g
th
e
s
u
g
g
ested
ap
p
r
o
ac
h
.
An
a
u
to
m
ated
v
alid
atio
n
o
f
in
ter
n
et
s
ec
u
r
ity
p
r
o
to
co
ls
a
n
d
ap
p
licatio
n
s
(
AVI
SP
A
)
s
im
u
latio
n
an
d
th
o
r
o
u
g
h
m
at
h
em
atica
l
s
ec
u
r
ity
an
aly
s
is
d
em
o
n
s
tr
ate
th
e
ef
f
e
ctiv
en
ess
o
f
th
e
s
u
g
g
ested
a
p
p
r
o
ac
h
.
T
h
e
r
esu
lts
o
f
t
h
ese
a
n
aly
s
es
d
em
o
n
s
tr
ate
co
n
v
in
cin
g
ly
th
at
th
e
s
u
g
g
est
ed
ap
p
r
o
a
ch
s
u
cc
ess
f
u
lly
r
ed
u
ce
s
all
r
elev
an
t
s
ec
u
r
ity
r
is
k
s
,
th
er
eb
y
im
p
r
o
v
in
g
th
e
s
ec
u
r
ity
p
o
s
tu
r
e
o
f
f
o
g
ce
n
tr
ic
I
o
T
co
m
m
u
n
icatio
n
.
Ka
p
o
o
r
et
a
l.
[
2
4
]
d
escr
ib
ed
a
n
ew
m
eth
o
d
ca
lled
RF
-
DE
C
C
,
wh
ich
co
m
b
in
es th
e
R
ed
Fo
x
o
p
tim
izatio
n
alg
o
r
i
th
m
f
o
r
clu
s
ter
in
g
with
DNA
-
b
ased
E
C
C
.
I
ts
g
o
al
is
to
m
ak
e
d
ata
m
o
r
e
s
ec
u
r
e
in
f
o
g
co
m
p
u
tin
g
en
v
ir
o
n
m
e
n
ts
.
T
h
e
s
tu
d
y
d
em
o
n
s
tr
ates
th
e
ef
f
ec
tiv
e
n
ess
o
f
E
C
C
,
a
lig
h
tweig
h
t
cr
y
p
to
g
r
a
p
h
ic
s
o
lu
tio
n
,
in
r
eso
u
r
ce
-
co
n
s
tr
ain
ed
in
ter
n
et
o
f
th
in
g
s
s
ettin
g
s
s
u
ch
as
f
o
g
co
m
p
u
tin
g
.
C
o
m
p
a
r
in
g
E
C
C
to
co
n
v
en
tio
n
al
p
u
b
lic
k
ey
cr
y
p
to
g
r
ap
h
y
tec
h
n
iq
u
es,
th
e
f
o
r
m
er
h
as
b
e
n
ef
its
in
ter
m
s
o
f
co
m
p
u
tin
g
p
er
f
o
r
m
an
ce
an
d
s
m
aller
k
ey
s
izes.
Ho
wev
er
,
a
d
d
in
g
a
h
ig
h
er
lev
el
o
f
en
c
r
y
p
tio
n
co
m
p
lex
ity
to
E
C
C
b
y
in
c
o
r
p
o
r
atin
g
DNA
-
b
ased
en
co
d
in
g
im
p
r
o
v
es
th
e
s
y
s
tem
'
s
s
e
cu
r
ity
.
T
h
is
n
o
v
el
m
eth
o
d
s
tr
en
g
th
e
n
s
th
e
en
cr
y
p
tio
n
p
r
o
ce
s
s
an
d
en
h
an
ce
s
d
ata
s
ec
u
r
ity
in
f
o
g
co
m
p
u
tin
g
s
itu
atio
n
s
b
y
tak
in
g
ad
v
an
tag
e
o
f
th
e
s
p
ec
ial
q
u
al
ities
o
f
DNA
en
co
d
in
g
.
Nar
a
y
an
a
an
d
Patib
an
d
la
[
2
5
]
p
r
e
s
en
ted
a
f
o
g
-
b
ased
m
o
d
el,
h
ig
h
lig
h
tin
g
its
f
u
n
ctio
n
al
im
p
o
r
tan
ce
a
n
d
c
r
itical
r
o
l
e
in
th
e
I
o
T
en
v
ir
o
n
m
en
t.
T
h
e
s
u
g
g
ested
m
et
h
o
d
g
ets
ar
o
u
n
d
I
o
T
d
ev
ices'
co
m
m
u
n
icatio
n
p
r
o
b
lem
s
b
y
co
m
b
in
in
g
f
o
g
c
o
m
p
u
tin
g
with
r
e
s
o
u
r
ce
m
an
a
g
em
en
t,
v
alid
atio
n
p
r
o
ce
d
u
r
es,
an
d
t
h
e
co
n
f
ig
u
r
atio
n
o
f
I
o
T
d
e
v
ic
es
to
cr
ea
te
a
s
tr
o
n
g
p
r
o
g
r
a
m
m
in
g
en
v
ir
o
n
m
en
t.
T
h
is
f
o
g
co
m
p
u
tin
g
ar
ch
itect
u
r
e
en
ab
les
s
m
o
o
th
co
n
n
ec
tio
n
s
b
etwe
en
I
o
T
d
ev
ices
wh
ile
also
g
u
ar
an
teein
g
d
ata
s
ec
u
r
ity
th
r
o
u
g
h
o
u
t th
e
c
o
m
m
u
n
icatio
n
p
r
o
ce
s
s
.
3.
P
RO
P
O
SE
D
M
E
T
H
O
D
T
h
e
m
a
i
n
c
o
n
t
r
i
b
u
t
i
o
n
o
f
t
h
i
s
s
t
u
d
y
i
s
t
h
e
i
n
t
r
o
d
u
c
t
i
o
n
o
f
a
v
e
r
y
e
f
f
i
c
i
e
n
t
a
n
d
s
e
c
u
r
e
e
n
c
r
y
p
t
i
o
n
t
e
c
h
n
i
q
u
e
t
h
a
t
i
s
b
a
s
e
d
o
n
e
l
l
i
p
t
i
c
c
u
r
v
e
c
r
y
p
t
o
g
r
a
p
h
y
(
E
C
C
)
.
T
h
i
s
m
e
t
h
o
d
f
a
c
i
l
i
t
a
t
e
s
t
h
e
g
e
n
e
r
a
t
i
o
n
o
f
a
s
h
a
r
e
d
k
e
y
a
m
o
n
g
p
a
r
t
i
c
i
p
a
n
t
s
,
w
h
i
c
h
a
l
l
o
w
s
t
h
e
m
t
o
s
a
f
e
g
u
a
r
d
t
h
e
i
r
s
h
a
r
e
d
m
e
s
s
a
g
e
s
a
n
d
t
h
u
s
e
n
a
b
l
e
s
e
c
u
r
e
c
o
m
m
u
n
i
c
a
t
i
o
n
.
T
h
e
c
u
r
r
e
n
t
i
n
v
e
s
t
i
g
a
t
i
o
n
o
f
s
h
a
r
e
d
m
e
s
s
a
g
e
e
n
c
r
y
p
t
i
o
n
f
r
e
q
u
e
n
t
l
y
n
e
g
l
e
c
t
s
t
h
e
c
r
i
t
i
c
a
l
i
n
i
t
i
a
l
s
t
a
g
e
o
f
e
s
t
a
b
l
i
s
h
i
n
g
t
h
i
s
s
h
a
r
e
d
k
e
y
.
I
n
a
d
d
i
t
i
o
n
t
o
s
t
r
e
n
g
t
h
e
n
i
n
g
t
h
e
s
e
c
u
r
i
t
y
o
f
t
h
e
c
o
m
m
u
n
i
c
a
t
i
o
n
p
r
o
c
e
s
s
,
t
h
i
s
s
t
u
d
y
i
n
t
r
o
d
u
c
e
s
a
r
e
s
i
l
i
e
n
t
a
n
d
e
n
h
a
n
c
e
d
m
e
t
h
o
d
f
o
r
e
n
c
o
d
i
n
g
a
n
d
m
a
p
p
i
n
g
p
l
a
i
n
t
e
x
t
t
o
a
n
e
l
l
i
p
t
i
c
c
u
r
v
e
(
E
C
)
.
T
h
e
s
t
u
d
y
p
r
i
m
a
r
i
l
y
f
o
c
u
s
e
s
o
n
p
r
o
v
i
d
i
n
g
a
d
e
t
a
i
l
e
d
e
x
p
l
a
n
a
t
i
o
n
o
f
t
h
e
t
h
r
e
e
p
r
o
c
e
s
s
e
s
i
n
v
o
l
v
e
d
i
n
i
n
i
t
i
a
t
i
n
g
E
C
C
,
w
h
i
c
h
i
s
a
c
r
u
c
i
a
l
e
l
e
m
e
n
t
i
n
s
e
c
u
r
i
n
g
g
r
o
u
p
c
o
m
m
u
n
i
c
a
t
i
o
n
s
y
s
t
e
m
s
,
e
s
p
e
c
i
a
l
l
y
i
n
I
o
T
e
n
v
i
r
o
n
m
e
n
t
s
.
F
u
r
t
h
e
r
m
o
r
e
,
t
h
i
s
s
t
r
a
t
e
g
y
i
n
t
e
g
r
a
t
e
s
t
h
e
n
o
t
i
o
n
o
f
I
o
T
f
o
g
n
o
d
e
s
,
w
h
i
c
h
s
e
r
v
e
a
s
m
e
d
i
a
t
o
r
s
t
o
e
n
a
b
l
e
a
n
d
s
a
f
e
g
u
a
r
d
c
o
m
m
u
n
i
c
a
t
i
o
n
b
e
t
w
e
e
n
I
o
T
d
e
v
i
c
e
s
a
n
d
t
h
e
c
l
o
u
d
.
T
h
e
f
o
g
n
o
d
e
s
c
a
r
r
y
o
u
t
e
s
s
e
n
t
i
a
l
f
u
n
c
t
i
o
n
s
l
i
k
e
e
n
c
r
y
p
t
i
o
n
a
n
d
k
e
y
m
a
n
a
g
e
m
e
n
t
,
u
t
i
l
i
z
i
n
g
E
C
C
t
o
e
n
s
u
r
e
t
h
e
s
e
c
u
r
i
t
y
a
n
d
e
f
f
e
c
t
i
v
e
n
e
s
s
o
f
t
h
e
e
n
t
i
r
e
c
o
m
m
u
n
i
c
a
t
i
o
n
p
r
o
c
e
s
s
w
i
t
h
i
n
t
h
e
I
o
T
e
c
o
s
y
s
t
e
m
.
F
i
g
u
r
e
2
s
h
o
w
s
t
h
e
r
e
p
r
e
s
e
n
t
a
t
i
o
n
o
f
t
h
e
s
u
g
g
e
s
t
e
d
s
t
r
a
t
e
g
y
.
T
h
e
f
ir
s
t
s
tag
e
o
f
th
e
im
p
lem
en
tatio
n
p
la
n
en
tails
estab
lis
h
in
g
a
co
m
p
r
e
h
en
s
iv
e
n
etwo
r
k
in
f
r
astru
ctu
r
e
th
at
i
n
clu
d
es
1
0
0
I
o
T
d
ev
ices,
2
5
u
s
er
s
,
1
f
o
g
g
atew
ay
,
1
m
icr
o
d
atac
e
n
ter
,
an
d
1
cl
o
u
d
s
er
v
er
.
T
h
is
b
r
o
a
d
an
d
wid
e
co
n
f
ig
u
r
atio
n
en
a
b
les
th
e
estab
lis
h
m
en
t
o
f
a
r
ea
lis
tic
I
o
T
ec
o
s
y
s
tem
wh
er
e
d
if
f
e
r
en
t
d
ev
ices
en
g
a
g
e
an
d
ex
c
h
an
g
e
in
f
o
r
m
atio
n
.
T
h
e
in
n
o
v
atio
n
i
n
th
is
co
n
f
ig
u
r
atio
n
lies
in
t
h
e
in
co
r
p
o
r
atio
n
o
f
a
f
o
g
g
atew
ay
a
n
d
a
tin
y
d
ata
ce
n
ter
,
wh
ich
allo
ws
co
m
p
u
tin
g
an
d
s
to
r
a
g
e
ca
p
ab
ilit
ies
to
b
e
clo
s
e
to
th
e
n
etwo
r
k
'
s
ed
g
e.
T
h
e
n
ex
t
s
tep
f
o
cu
s
es
o
n
th
e
s
ec
u
r
e
r
eg
is
tr
at
io
n
o
f
I
o
T
d
ev
ices.
E
v
e
r
y
d
ev
i
ce
is
en
r
o
lled
with
a
d
is
tin
ct
id
en
tity
(
I
D)
,
a
p
u
b
l
ic
k
ey
,
an
d
a
p
r
iv
ate
k
ey
,
all
c
r
ea
ted
u
s
in
g
E
C
C
.
T
h
e
in
n
o
v
a
tio
n
in
th
is
s
tag
e
is
em
p
lo
y
in
g
E
C
C
f
o
r
th
e
g
en
er
atio
n
o
f
t
h
e
in
itial
k
ey
.
T
h
is
n
o
t
o
n
ly
i
m
p
r
o
v
es
s
ec
u
r
ity
b
u
t
also
g
u
ar
an
tees
th
at
th
e
s
y
s
tem
r
em
ain
s
lig
h
tweig
h
t a
n
d
ef
f
icien
t,
wh
ich
is
ess
en
tial f
o
r
ex
ten
s
iv
e
I
o
T
im
p
le
m
e
n
tatio
n
s
.
Fig
u
r
e
2
.
Pro
p
o
s
ed
m
et
h
o
d
o
lo
g
y
b
lo
c
k
d
iag
r
am
T
h
e
f
o
g
g
atew
ay
u
s
es
E
C
C
to
en
cr
y
p
t
th
e
d
ata
c
o
llected
f
r
o
m
I
o
T
d
e
v
ices
d
u
r
i
n
g
th
e
s
u
b
s
eq
u
en
t
s
tag
e.
T
h
e
f
o
g
g
atew
ay
ac
ts
as
an
in
ter
m
ed
iar
y
,
o
f
f
er
in
g
en
h
an
ce
d
s
ec
u
r
ity
an
d
c
o
m
p
u
tin
g
ca
p
ab
ilit
ies
n
ea
r
Ne
two
r
k
S
e
tu
p
De
v
i
c
e
Regi
s
tr
at
i
o
n
Da
ta
E
n
c
r
y
p
ti
o
n
(
F
og
G
ate
w
ay
)
E
n
c
r
y
p
te
d
Da
ta
T
r
an
s
fer
M
ITM
A
tt
a
c
k
Dete
c
ti
on
Re
s
u
l
ts
A
n
a
l
y
s
i
s
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
-
8
7
0
8
A
n
o
ve
l secu
r
ed
o
p
en
s
ta
n
d
a
r
d
fr
a
mewo
r
k
fo
r
in
tern
et
o
f th
in
g
s
…
(
K
r
is
h
n
a
p
u
r
a
S
r
in
iva
s
a
R
a
vin
d
r
a
)
7229
I
o
T
d
e
v
ices.
B
y
en
cr
y
p
tin
g
d
ata
at
th
is
s
p
ec
if
ic
lev
el,
th
e
s
y
s
tem
en
s
u
r
es
th
e
p
r
o
tect
io
n
o
f
co
n
f
id
en
tial
in
f
o
r
m
atio
n
b
ef
o
r
e
it
r
ea
ch
es
th
e
clo
u
d
s
er
v
er
.
T
h
is
ap
p
r
o
ac
h
u
tili
ze
s
th
e
p
r
o
ce
s
s
in
g
p
o
wer
o
f
th
e
f
o
g
g
atew
ay
to
t
r
an
s
f
er
e
n
cr
y
p
tio
n
task
s
f
r
o
m
I
o
T
d
ev
ices
th
at
h
av
e
lim
ited
r
eso
u
r
ce
s
.
T
h
e
I
o
T
d
e
v
ices
tr
an
s
m
it
th
e
d
ata
to
th
e
clo
u
d
s
er
v
er
af
ter
en
cr
y
p
tio
n
.
T
h
is
m
ea
s
u
r
e
g
u
ar
an
tees
th
e
s
ec
u
r
ity
o
f
all
d
ata
s
en
t
ac
r
o
s
s
th
e
n
etwo
r
k
,
r
ed
u
cin
g
th
e
p
o
s
s
ib
i
lity
o
f
d
ata
b
r
ea
ch
es
wh
ile
in
tr
an
s
it.
W
h
ile
tr
an
s
m
itti
n
g
e
n
cr
y
p
ted
d
ata
,
th
e
s
y
s
tem
co
n
s
is
ten
tly
m
o
n
ito
r
s
f
o
r
p
o
s
s
ib
le
MI
T
M
attac
k
s
.
T
h
e
s
y
s
tem
ac
co
m
p
lis
h
es
th
is
b
y
an
aly
zin
g
cr
y
p
to
g
r
ap
h
ic
k
e
y
s
an
d
co
m
m
u
n
icatio
n
p
atter
n
s
.
T
h
e
s
y
s
tem
h
as
t
h
e
ca
p
ab
ilit
y
to
id
e
n
tify
an
o
m
alies
th
at
s
u
g
g
est
u
n
lawf
u
l
in
ter
ce
p
tio
n
o
r
tam
p
er
in
g
ef
f
o
r
ts
.
T
h
is
two
-
tier
ed
s
ec
u
r
ity
m
eth
o
d
en
s
u
r
es
in
s
tan
t
id
en
tific
atio
n
a
n
d
r
eso
lu
tio
n
o
f
an
y
attem
p
t
to
b
r
ea
c
h
th
e
co
m
m
u
n
icatio
n
,
p
r
o
v
id
i
n
g
r
o
b
u
s
t
p
r
o
tectio
n
f
o
r
th
e
I
o
T
ec
o
s
y
s
tem
.
3
.
1
.
Upda
t
ing
newly
a
dd
ed
no
de
T
o
m
ain
tain
b
o
th
f
o
r
war
d
a
n
d
b
ac
k
war
d
s
ec
r
ec
y
,
it
is
im
p
er
ativ
e
to
e
n
s
u
r
e
th
at
a
n
y
n
ewly
jo
in
ed
n
o
d
es
ca
n
n
o
t
in
te
r
p
r
et
t
h
e
cip
h
er
te
x
t
d
eliv
er
e
d
b
e
f
o
r
e
th
eir
in
c
lu
s
io
n
in
th
e
g
r
o
u
p
u
s
in
g
th
e
s
h
ar
ed
k
ey
ℎ
.
Similar
ly
,
n
o
d
es
d
ep
ar
tin
g
f
r
o
m
th
e
g
r
o
u
p
s
h
o
u
l
d
n
o
t
b
e
ab
le
to
d
ec
ip
h
er
th
e
cip
h
er
t
ex
t
th
ey
s
en
d
.
T
h
e
s
u
g
g
ested
m
eth
o
d
g
iv
es
ea
ch
n
o
d
e
th
e
ab
ilit
y
to
ca
r
r
y
o
u
t
task
s
to
m
ain
tain
ℎ
.
W
h
en
a
n
ew
n
o
d
e
wan
ts
to
jo
in
th
e
g
r
o
u
p
,
th
e
e
d
g
e
s
en
d
s
th
e
h
ash
ed
I
D
1
(
)
o
f
th
e
jo
i
n
in
g
n
o
d
e
to
all
c
u
r
r
en
t
n
o
d
es.
Af
ter
war
d
s
,
ea
ch
n
o
d
e
i
n
clu
d
es
th
is
h
ash
e
d
I
D
i
n
its
n
o
d
e
lis
t
n
L
is
t
wh
ile
s
im
u
ltan
eo
u
s
ly
u
p
d
atin
g
ℎ
as
d
escr
ib
ed
i
n
Fig
u
r
e
3
.
Fig
u
r
e
3
.
Up
d
atin
g
n
ewly
ad
d
ed
n
o
d
e
3
.
2
.
Securing
a
g
a
ins
t
encr
y
ptio
n a
t
t
a
c
k
s
Utilized
th
e
cip
h
er
b
lo
c
k
ch
ai
n
in
g
(
C
B
C
)
m
o
d
e
o
f
o
p
er
atio
n
to
p
r
o
tect
th
e
b
lo
c
k
s
f
r
o
m
en
cr
y
p
tio
n
attac
k
s
lik
e
th
e
ch
o
s
en
p
lain
te
x
t
attac
k
(
C
PA)
an
d
th
e
c
h
o
s
e
n
cip
h
er
tex
t
attac
k
(
C
C
A)
.
T
h
is
m
o
d
e
im
p
r
o
v
es
th
e
b
lo
c
k
s
'
r
esis
tan
ce
to
s
u
ch
ass
au
lts
b
y
in
co
r
p
o
r
atin
g
a
f
e
ed
b
ac
k
m
ec
h
an
is
m
th
at
c
o
m
b
in
es
ea
ch
p
lain
tex
t
b
lo
ck
with
th
e
ci
p
h
er
tex
t
o
f
t
h
e
p
r
e
v
io
u
s
b
lo
ck
b
ef
o
r
e
e
n
cr
y
p
tio
n
.
T
h
is
in
ter
d
ep
en
d
en
ce
b
etwe
en
s
u
cc
ee
d
in
g
b
lo
ck
s
en
s
u
r
es
th
at
a
n
y
ch
a
n
g
es
o
r
m
a
n
ip
u
latio
n
s
in
o
n
e
b
lo
ck
p
r
o
p
ag
ate
u
n
p
r
ed
i
ctab
ly
th
r
o
u
g
h
th
e
s
u
b
s
eq
u
en
t
b
lo
ck
s
,
f
o
ilin
g
att
em
p
ts
to
d
er
iv
e
in
f
o
r
m
atio
n
ab
o
u
t
th
e
p
lain
te
x
t
o
r
in
f
l
u
e
n
ce
th
e
cip
h
er
tex
t.
Fig
u
r
e
4
d
ep
icts
th
e
p
r
o
ce
s
s
o
f
b
lo
ck
ch
ain
i
n
g
in
C
B
C
m
o
d
e,
d
em
o
n
s
tr
atin
g
h
o
w
th
is
ap
p
r
o
ac
h
h
elp
s
to
im
p
r
o
v
e
t
h
e
s
ec
u
r
ity
o
f
en
cr
y
p
ted
d
ata.
3
.
3
.
M
I
T
M
a
t
t
a
ck
det
ec
t
io
n
T
h
e
MI
T
M
attac
k
d
etec
tio
n
m
eth
o
d
aim
s
to
im
p
r
o
v
e
t
h
e
s
ec
u
r
ity
o
f
I
o
T
co
m
m
u
n
i
ca
tio
n
s
b
y
u
tili
zin
g
a
m
u
lti
-
lay
er
e
d
s
tr
ateg
y
to
d
etec
t
p
o
ten
tial
MI
T
M
attac
k
s
.
T
h
is
alg
o
r
ith
m
in
teg
r
ates
m
u
ltip
le
cu
ttin
g
-
ed
g
e
alg
o
r
ith
m
s
to
en
ab
le
r
eliab
le
d
etec
tio
n
wh
ile
p
r
eser
v
in
g
o
p
tim
al
ef
f
icien
cy
f
o
r
I
o
T
s
ce
n
ar
io
s
.
I
n
itially
,
th
e
m
eth
o
d
v
alid
ates
th
e
in
teg
r
ity
o
f
th
e
s
ess
io
n
k
ey
.
T
h
e
p
r
o
ce
s
s
en
tails
g
en
er
atin
g
a
s
ess
io
n
k
ey
u
s
in
g
b
o
th
th
e
s
en
d
er
an
d
r
ec
i
p
ien
t'
s
p
u
b
lic
k
ey
s
.
T
h
en
co
m
p
ar
e
th
is
d
e
r
iv
ed
k
ey
with
th
e
en
cr
y
p
tio
n
s
ess
io
n
k
ey
.
T
h
is
p
h
ase
g
u
ar
an
tees
th
at
an
y
in
co
n
s
is
ten
cies
in
k
ey
d
er
iv
atio
n
,
wh
ich
m
ay
s
u
g
g
est
a
MI
T
M
attac
k
,
ar
e
im
m
ed
iately
id
en
tifie
d
.
Ad
d
it
io
n
ally
,
th
e
m
eth
o
d
v
er
if
ies
th
e
d
ata
tr
an
s
m
is
s
io
n
's
in
teg
r
it
y
b
y
p
er
f
o
r
m
in
g
a
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8
7
0
8
I
n
t J E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
14
,
No
.
6
,
Dec
em
b
e
r
20
24
:
7
2
2
4
-
7
2
3
5
7230
h
ash
f
u
n
ctio
n
o
n
th
e
c
u
r
r
e
n
t
en
cr
y
p
te
d
d
ata
a
n
d
c
o
m
p
a
r
in
g
it
to
t
h
e
h
ash
o
f
th
e
p
r
ev
io
u
s
s
u
cc
ess
f
u
l
tr
an
s
m
is
s
io
n
.
T
o
d
etec
t
a
n
y
u
n
wan
te
d
r
ep
ea
ts
o
r
a
d
ju
s
tm
en
ts
in
t
h
e
d
ata
s
tr
ea
m
,
wh
ich
ar
e
co
m
m
o
n
in
d
icato
r
s
o
f
MI
T
M
attac
k
s
,
th
e
tech
n
iq
u
e
e
n
s
u
r
es
th
at
t
h
ese
h
ash
es
ar
e
d
if
f
er
e
n
t.
T
h
e
th
ir
d
p
h
ase
e
n
tails
o
b
s
er
v
in
g
a
n
d
a
n
aly
zin
g
p
atter
n
s
o
f
co
m
m
u
n
icatio
n
.
T
h
e
p
r
o
g
r
am
p
r
ed
icts
a
co
m
m
u
n
icati
o
n
p
atter
n
u
s
in
g
th
e
s
en
d
er
an
d
r
ec
ip
ien
t'
s
p
u
b
lic
k
ey
s
an
d
th
en
co
m
p
ar
es
it
to
th
e
o
b
s
er
v
ed
co
m
m
u
n
icatio
n
p
atter
n
.
T
h
is
n
o
v
el
m
eth
o
d
u
tili
ze
s
th
e
r
eliab
ilit
y
o
f
an
ticip
ated
c
o
n
tacts to
d
ete
ct
an
y
ir
r
eg
u
lar
ities
in
th
e
co
m
m
u
n
icatio
n
p
r
o
ce
s
s
th
at
co
u
ld
in
d
icate
th
e
ex
is
ten
ce
o
f
an
u
n
au
t
h
o
r
ized
in
d
iv
id
u
al.
Fin
ally
,
th
e
alg
o
r
ith
m
ex
am
in
es
ir
r
eg
u
lar
ities
in
th
e
tr
a
n
s
f
er
o
f
d
ata.
T
h
e
p
r
o
ce
s
s
an
al
y
s
es
d
if
f
er
e
n
t
attr
ib
u
tes
o
f
th
e
en
cr
y
p
ted
d
a
ta
to
id
en
tify
an
y
ab
n
o
r
m
alities
th
at
s
u
r
p
ass
a
p
r
ed
eter
m
in
ed
th
r
esh
o
ld
.
T
h
is
th
o
r
o
u
g
h
e
x
am
in
atio
n
g
u
a
r
an
tees
th
e
d
etec
tio
n
o
f
ev
e
n
m
i
n
o
r
in
d
icatio
n
s
o
f
in
ter
v
e
n
tio
n
o
r
m
an
ip
u
latio
n
,
th
er
eb
y
e
n
h
an
ci
n
g
th
e
lev
el
o
f
s
ec
u
r
ity
.
T
h
e
alg
o
r
ith
m
in
n
o
v
ates
b
y
in
co
r
p
o
r
atin
g
n
u
m
er
o
u
s
d
etec
tio
n
m
eth
o
d
s
,
ea
ch
tar
g
etin
g
d
is
tin
ct
v
u
ln
er
a
b
ilit
ies,
to
p
r
o
v
i
d
e
a
r
o
b
u
s
t
an
d
r
eliab
le
p
r
o
tectio
n
m
ec
h
an
is
m
s
p
ec
if
ically
tailo
r
ed
f
o
r
I
o
T
co
n
tex
ts
with
lim
ited
r
eso
u
r
ce
s
.
Fig
u
r
e
4
.
I
n
itial
s
etu
p
s
cr
ee
n
s
h
o
t
4.
RE
SU
L
T
S AN
D
D
I
SCU
SS
I
O
N
Per
f
o
r
m
ed
a
d
etailed
an
aly
s
is
o
f
th
e
im
p
lem
en
tatio
n
,
f
o
c
u
s
in
g
o
n
k
e
y
p
er
f
o
r
m
a
n
ce
m
etr
ics
ac
r
o
s
s
d
if
f
er
en
t
s
tag
es,
to
ev
alu
ate
o
u
r
s
ec
u
r
ed
o
p
e
n
s
tan
d
ar
d
f
r
a
m
ewo
r
k
f
o
r
I
o
T
ap
p
licatio
n
s
.
T
h
e
in
itial
p
h
ase
o
f
th
e
im
p
lem
en
tatio
n
p
la
n
h
as
r
esu
lted
in
th
e
cr
ea
tio
n
o
f
a
c
o
m
p
r
eh
en
s
iv
e
n
etwo
r
k
in
f
r
astru
ctu
r
e
c
o
n
s
is
tin
g
o
f
1
0
0
I
o
T
d
ev
ices,
2
5
u
s
er
s
,
1
f
o
g
g
atew
ay
,
1
m
icr
o
d
atac
en
te
r
,
an
d
1
clo
u
d
s
er
v
er
.
Fig
u
r
e
4
s
h
o
ws th
e
d
etail
o
f
th
e
n
etwo
r
k
s
etu
p
o
f
s
in
g
le
n
o
d
e.
T
h
is
co
n
f
ig
u
r
atio
n
o
f
f
er
s
a
s
tr
o
n
g
an
d
r
eliab
le
s
ettin
g
to
e
v
alu
ate
th
e
ef
f
ec
tiv
en
ess
o
f
th
e
f
r
am
ew
o
r
k
in
p
r
ac
tical
s
itu
atio
n
s
.
Ou
r
in
v
esti
g
atio
n
en
c
o
m
p
ass
es
a
v
ar
iety
o
f
cr
itical
f
ac
to
r
s
,
in
clu
d
in
g
p
o
wer
c
o
n
s
u
m
p
tio
n
,
r
eso
u
r
ce
u
s
ag
e,
av
er
ag
e
en
er
g
y
co
n
s
u
m
p
tio
n
,
a
v
er
ag
e
en
d
-
to
-
e
n
d
d
elay
,
an
d
th
r
o
u
g
h
p
u
t.
Aim
ed
to
m
ea
s
u
r
e
th
e
p
er
f
o
r
m
an
ce
im
p
ac
t
o
f
th
e
s
ec
u
r
ity
m
ec
h
a
n
is
m
s
an
d
ev
alu
at
e
th
e
o
v
er
all
ef
f
ec
tiv
en
ess
o
f
th
e
p
r
o
p
o
s
ed
f
r
am
ew
o
r
k
b
y
a
n
aly
zin
g
th
ese
in
d
icato
r
s
.
Fig
u
r
e
5
s
h
o
ws
a
s
etu
p
wh
er
e
a
n
etwo
r
k
s
im
u
latio
n
is
r
u
n
n
in
g
,
u
s
in
g
th
e
NS
-
3
.
2
6
n
etwo
r
k
s
im
u
lato
r
.
T
h
e
lef
t
ter
m
i
n
al
d
is
p
lay
s
lo
g
s
a
n
d
e
n
cr
y
p
tio
n
r
esu
lts
f
o
r
a
n
etwo
r
k
s
tr
u
ctu
r
e
co
n
s
is
tin
g
o
f
1
2
8
n
o
d
es.
T
h
e
p
r
o
ce
d
u
r
e
en
tails
s
ca
n
n
in
g
th
e
n
etwo
r
k
ar
ch
itectu
r
e,
im
p
le
m
en
tin
g
a
G
r
ap
h
v
iz
lay
o
u
t,
an
d
en
cr
y
p
tin
g
s
en
s
ed
d
ata
u
s
in
g
E
C
C
with
in
a
f
o
g
g
atew
ay
.
T
h
e
ter
m
in
al
d
is
p
lay
s
m
an
y
lin
es
o
f
en
c
r
y
p
ted
d
ata,
s
u
g
g
esti
n
g
ef
f
ec
tiv
e
en
cr
y
p
ti
o
n
o
f
in
f
o
r
m
atio
n
f
r
o
m
d
if
f
er
en
t
n
o
d
es.
T
h
e
Py
th
o
n
wi
n
d
o
w
o
n
th
e
r
ig
h
t
d
is
p
lay
s
th
e
n
etwo
r
k
to
p
o
lo
g
y
,
illu
s
tr
atin
g
n
o
d
es
co
n
n
ec
te
d
b
y
g
r
ee
n
lin
es,
wh
ich
i
n
d
ic
ate
co
m
m
u
n
icatio
n
lin
k
s
,
an
d
r
e
d
d
o
ts
d
e
n
o
tin
g
th
e
n
o
d
es th
em
s
elv
es.
I
o
T
d
ev
ices
r
ec
eiv
e
an
d
t
r
an
s
m
it
p
ac
k
ets
to
th
e
clo
u
d
s
er
v
e
r
d
u
r
in
g
th
e
s
im
u
latio
n
.
L
o
g
e
n
tr
ies
s
h
o
w
th
at
th
e
s
y
s
tem
f
in
d
s
a
MI
T
M
attac
k
b
y
an
aly
zin
g
th
e
k
e
y
s
,
as
s
h
o
wn
b
y
th
e
“
m
an
-
in
-
th
e
-
m
id
d
le
(
MI
T
M)
attac
k
d
etec
ted
”
m
ess
ag
es
as
s
h
o
wn
in
Fig
u
r
e
6
.
T
h
e
n
o
d
e
s
an
d
lin
k
s
u
n
d
e
r
g
o
d
y
n
am
ic
ch
an
g
es
d
u
r
in
g
th
e
s
im
u
latio
n
,
ef
f
ec
tiv
ely
d
em
o
n
s
tr
atin
g
th
e
f
lo
w
o
f
d
ata
an
d
in
ter
ac
tio
n
s
with
in
th
e
n
etwo
r
k
.
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
-
8
7
0
8
A
n
o
ve
l secu
r
ed
o
p
en
s
ta
n
d
a
r
d
fr
a
mewo
r
k
fo
r
in
tern
et
o
f th
in
g
s
…
(
K
r
is
h
n
a
p
u
r
a
S
r
in
iva
s
a
R
a
vin
d
r
a
)
7231
Fig
u
r
e
5
.
Scr
ee
n
s
h
o
t
s
h
o
win
g
en
cr
y
p
tio
n
an
d
n
o
d
es c
o
m
m
u
n
icatio
n
Fig
u
r
e
6
.
Scr
ee
n
s
h
o
t
in
d
icatin
g
MI
T
M
d
etec
tio
n
As
d
ep
icted
in
Fig
u
r
e
7
,
th
e
an
aly
s
is
o
f
en
er
g
y
c
o
n
s
u
m
p
tio
n
ac
r
o
s
s
v
ar
io
u
s
I
o
T
n
o
d
e
s
p
r
o
v
id
es
v
alu
ab
le
in
s
ig
h
ts
in
to
th
e
n
etwo
r
k
'
s
o
p
er
atin
g
d
y
n
am
ics
an
d
ef
f
ec
tiv
en
ess
.
E
v
er
y
I
o
T
n
o
d
e
ex
h
ib
its
a
s
tead
y
r
is
e
in
en
e
r
g
y
u
s
ag
e
as
tim
e
p
r
o
g
r
ess
es.
T
h
is
tr
e
n
d
s
u
g
g
ests
th
at
as
th
e
s
im
u
latio
n
a
d
v
an
ce
s
,
t
h
e
n
o
d
es
co
n
s
is
ten
tly
co
n
s
u
m
e
en
er
g
y
,
p
o
s
s
ib
ly
b
ec
au
s
e
o
f
c
o
n
tin
u
al
co
m
m
u
n
icatio
n
,
p
r
o
ce
s
s
in
g
wo
r
k
lo
ad
s
,
an
d
en
cr
y
p
tio
n
ac
tiv
ities
.
T
h
e
c
o
n
s
is
ten
t
lin
ea
r
tr
en
d
i
n
d
icate
s
a
b
alan
ce
d
allo
ca
tio
n
o
f
w
o
r
k
lo
ad
am
o
n
g
th
e
n
o
d
es,
with
n
o
n
o
tab
le
s
u
r
g
es
o
r
d
ec
lin
es
in
en
er
g
y
co
n
s
u
m
p
tio
n
.
T
h
e
v
ar
iatio
n
s
in
en
er
g
y
u
s
ag
e
am
o
n
g
th
e
n
o
d
es
s
u
g
g
est
th
at
s
o
m
e
n
o
d
es
ar
e
o
p
er
atin
g
m
o
r
e
i
n
ten
s
iv
ely
o
r
p
er
f
o
r
m
in
g
m
o
r
e
d
e
m
an
d
in
g
f
u
n
ctio
n
s
with
in
th
e
n
etwo
r
k
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8
7
0
8
I
n
t J E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
14
,
No
.
6
,
Dec
em
b
e
r
20
24
:
7
2
2
4
-
7
2
3
5
7232
Fig
u
r
e
7
.
C
u
m
u
lativ
e
en
er
g
y
c
o
n
s
u
m
p
tio
n
p
lo
t f
o
r
s
o
m
e
I
o
T
n
o
d
es
Fig
u
r
e
8
illu
s
tr
ates
th
e
p
r
o
ce
s
s
in
g
u
s
ag
e
p
er
ce
n
tag
e
o
v
er
ti
m
e
f
o
r
t
h
r
ee
d
is
tin
ct
s
ch
em
es:
Fro
m
[
2
6
]
,
[
2
7
]
,
a
n
d
th
e
p
r
o
p
o
s
ed
s
ch
em
e.
All
th
r
ee
s
y
s
tem
s
s
h
o
w
s
ig
n
if
ican
t
v
ar
iatio
n
s
in
p
r
o
ce
s
s
o
r
u
s
ag
e
o
v
er
tim
e.
T
h
is
im
p
lies
th
at
th
e
task
s
u
n
d
er
p
r
o
ce
s
s
in
g
d
is
p
lay
v
ar
iab
ili
ty
,
lead
in
g
to
s
p
o
r
a
d
ic
in
cr
ea
s
es
an
d
d
ec
r
ea
s
es
in
u
tili
za
tio
n
.
T
h
e
s
ig
n
if
ican
t
f
lu
ctu
atio
n
in
[
2
6
]
in
d
icate
s
th
at
th
e
Sch
e
m
e
ca
n
ef
f
ec
tiv
ely
m
an
ag
e
d
em
an
d
in
g
p
r
o
ce
s
s
in
g
d
e
m
an
d
s
.
Ho
wev
er
,
it
m
a
y
also
en
co
u
n
ter
p
e
r
io
d
s
o
f
u
n
d
er
u
tili
za
tio
n
.
T
h
e
p
r
o
p
o
s
ed
m
eth
o
d
d
em
o
n
s
tr
ates
f
lu
ctu
atio
n
s
,
b
u
t
o
v
er
all,
it
m
ain
tain
s
a
s
tead
ier
p
er
f
o
r
m
an
ce
i
n
co
m
p
ar
is
o
n
to
th
e
o
th
er
two
s
ch
em
es.
T
h
e
o
b
s
er
v
ed
s
tab
ilit
y
in
d
icate
s
th
at
th
e
s
u
g
g
ested
s
y
s
tem
d
is
tr
ib
u
tes
th
e
p
r
o
ce
s
s
in
g
b
u
r
d
en
in
a
m
o
r
e
b
alan
ce
d
m
a
n
n
er
o
v
er
ti
m
e,
p
o
ten
tially
e
n
h
an
ci
n
g
o
v
e
r
all
ef
f
icien
cy
.
T
h
e
co
n
s
is
ten
cy
o
f
t
h
e
p
r
o
p
o
s
ed
s
ch
em
e'
s
p
r
o
ce
s
s
o
r
u
tili
za
tio
n
s
u
g
g
ests
th
at
it
h
as
th
e
p
o
ten
tial
to
b
e
m
o
r
e
s
ca
lab
le.
W
h
en
th
er
e
is
an
in
cr
ea
s
e
in
th
e
n
u
m
b
er
o
f
jo
b
s
o
r
I
o
T
d
ev
ices,
a
m
o
r
e
s
tab
le
s
ch
em
e
ca
n
ef
f
ec
tiv
el
y
m
an
a
g
e
th
e
ad
d
itio
n
al
lo
a
d
with
o
u
t
ex
p
er
ien
cin
g
s
ev
er
e
p
er
f
o
r
m
a
n
ce
d
eg
r
a
d
atio
n
.
T
h
e
r
ef
o
r
e,
th
e
s
u
g
g
ested
ap
p
r
o
ac
h
b
ec
o
m
es
a
f
ea
s
ib
le
ch
o
ice
f
o
r
lar
g
er
an
d
m
o
r
e
in
t
r
icate
I
o
T
n
etwo
r
k
s
.
Fig
u
r
e
8
.
Ov
e
r
h
ea
d
tim
e
co
m
p
ar
is
o
n
Fig
u
r
e
9
illu
s
tr
ates
th
e
p
o
we
r
co
n
s
u
m
p
tio
n
p
er
ce
n
tag
e
o
v
e
r
tim
e
f
o
r
t
h
r
ee
d
is
tin
ct
s
ch
em
es:
p
lan
[
2
6
]
,
s
ch
em
e
[
2
7
]
,
a
n
d
th
e
p
r
o
p
o
s
ed
p
lan
.
E
ac
h
o
f
th
e
th
r
e
e
d
esig
n
s
d
e
m
o
n
s
tr
ates
s
u
b
s
t
an
tial
v
ar
iatio
n
s
i
n
p
o
wer
u
s
e
o
v
er
tim
e.
T
h
e
e
x
ec
u
tio
n
o
f
task
s
d
em
o
n
s
tr
ates
v
ar
iab
ilit
y
,
lead
in
g
to
in
ter
m
itten
t
s
u
r
g
es
an
d
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
-
8
7
0
8
A
n
o
ve
l secu
r
ed
o
p
en
s
ta
n
d
a
r
d
fr
a
mewo
r
k
fo
r
in
tern
et
o
f th
in
g
s
…
(
K
r
is
h
n
a
p
u
r
a
S
r
in
iva
s
a
R
a
vin
d
r
a
)
7233
d
ec
lin
es
in
p
o
wer
u
s
ag
e.
T
h
e
v
ar
iatio
n
s
i
n
d
icate
th
at
th
e
wo
r
k
lo
a
d
is
n
o
t
c
o
n
s
is
ten
t,
an
d
th
e
p
r
o
ce
s
s
in
g
r
eq
u
ir
em
e
n
ts
v
ar
y
d
y
n
am
icall
y
.
T
h
e
p
r
o
p
o
s
ed
ap
p
r
o
ac
h
d
e
m
o
n
s
tr
ates
a
m
o
r
e
eq
u
itab
le
d
is
tr
ib
u
tio
n
o
f
task
s
,
r
esu
ltin
g
in
f
ewe
r
s
ig
n
if
ican
t
s
p
ik
es
an
d
d
r
o
p
s
in
wo
r
k
lo
ad
.
T
h
e
p
r
o
p
o
s
ed
d
esig
n
e
x
h
ib
its
p
ea
k
s
o
f
u
p
to
3
5
%
at
5
an
d
1
6
s
ec
o
n
d
s
,
wh
ich
is
co
m
p
ar
ab
le
to
th
e
o
th
e
r
s
ch
em
es
b
u
t
with
less
in
ten
s
ity
.
T
h
e
p
r
o
p
o
s
ed
s
tr
ateg
y
'
s
s
tab
ilit
y
d
em
o
n
s
tr
ates
its
ab
ilit
y
to
eq
u
ally
d
is
tr
ib
u
te
p
o
wer
d
em
an
d
ac
r
o
s
s
tim
e,
wh
ich
h
as
th
e
p
o
ten
tial
to
im
p
r
o
v
e
o
v
er
all
ef
f
icien
cy
.
T
h
e
s
u
g
g
ested
s
ch
em
e'
s
ca
p
ac
ity
to
s
u
s
tain
co
n
s
is
ten
t
p
o
wer
co
n
s
u
m
p
tio
n
d
esp
ite
f
lu
ctu
at
in
g
wo
r
k
lo
ad
s
in
d
icate
s
its
r
esil
ien
ce
an
d
f
lex
ib
ilit
y
.
T
h
e
r
esil
ien
ce
o
f
I
o
T
ap
p
licatio
n
s
is
ess
en
tial
in
r
ea
l
-
wo
r
ld
s
ce
n
ar
io
s
,
as
th
e
task
s
th
ey
h
a
n
d
le
ca
n
v
ar
y
u
n
p
r
ed
i
ctab
ly
in
ter
m
s
o
f
n
atu
r
e
an
d
s
ev
er
ity
.
Fig
u
r
e
1
0
illu
s
tr
ates
th
e
co
r
r
el
atio
n
b
etwe
en
th
e
q
u
an
tity
o
f
I
o
T
d
e
v
ices
an
d
th
e
r
ea
lized
t
h
r
o
u
g
h
p
u
t
o
f
th
e
p
r
o
p
o
s
ed
s
ch
em
e.
T
h
e
th
r
o
u
g
h
p
u
t
e
x
h
ib
its
a
d
ir
ec
t
p
r
o
p
o
r
tio
n
ality
to
th
e
n
u
m
b
er
o
f
I
o
T
d
e
v
ices,
r
esu
ltin
g
in
a
lin
ea
r
r
is
e.
B
ec
au
s
e
th
e
co
r
r
elatio
n
is
lin
ea
r
,
it
lo
o
k
s
lik
e
th
e
s
u
g
g
ested
m
eth
o
d
ca
n
h
an
d
le
ad
d
in
g
m
o
r
e
d
ev
ices
with
o
u
t
lo
s
in
g
m
u
ch
p
er
f
o
r
m
a
n
ce
,
s
h
o
win
g
th
at
it
ca
n
b
e
u
s
ed
o
n
a
lar
g
e
s
ca
le.
T
h
e
s
tead
y
in
cr
ea
s
e
i
n
th
r
o
u
g
h
p
u
t
p
r
o
v
id
es
e
v
id
en
ce
th
at
t
h
e
s
u
g
g
ested
ap
p
r
o
ac
h
h
as
a
h
ig
h
l
ev
el
o
f
s
ca
lab
ilit
y
.
As
th
e
I
o
T
n
etwo
r
k
s
g
r
o
w,
it
i
s
cr
u
cial
to
b
e
ab
le
to
s
u
s
tain
o
r
en
h
an
ce
t
h
r
o
u
g
h
p
u
t
to
en
s
u
r
e
th
at
th
e
n
etwo
r
k
ca
n
h
an
d
le
a
s
ig
n
if
ica
n
t
n
u
m
b
er
o
f
d
ev
ices
with
o
u
t
s
ac
r
if
icin
g
its
f
u
n
cti
o
n
ality
.
E
n
s
u
r
in
g
a
co
n
s
is
ten
tly
h
ig
h
lev
el
o
f
d
ata
p
r
o
ce
s
s
in
g
ca
p
a
city
allo
ws
th
e
s
y
s
tem
to
ef
f
ec
tiv
ely
h
an
d
le
th
e
in
cr
ea
s
in
g
n
u
m
b
er
o
f
lin
k
e
d
d
ev
ices in
d
iv
er
s
e
r
ea
l
-
w
o
r
ld
s
itu
atio
n
s
.
Fig
u
r
e
9
.
Po
wer
c
o
n
s
u
m
p
tio
n
co
m
p
ar
is
o
n
Fig
u
r
e
1
0
.
T
h
r
o
u
g
h
p
u
t
v
s
n
u
m
b
er
o
f
I
o
T
d
ev
ices
Evaluation Warning : The document was created with Spire.PDF for Python.