I
nte
rna
t
io
na
l J
o
urna
l o
f
Adv
a
nces in Applie
d Science
s
(
I
J
AAS)
Vo
l.
1
5
,
No
.
3
,
Sep
tem
b
er
20
2
6
,
p
p
.
1
0
0
6
~
1
0
1
4
I
SS
N:
2252
-
8
8
1
4
,
DOI
:
1
0
.
1
1
5
9
1
/ijaas
.
v
1
5
.
i
3
.
pp
1
0
0
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1
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1
4
1006
J
o
ur
na
l ho
m
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a
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e
:
h
ttp
:
//ij
a
a
s
.
ia
esco
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co
m
H
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brid ligh
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enc
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ption a
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sea
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ble securi
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framewo
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for
secur
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ima
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e and text
data
s
ha
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F
a
iro
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Sh
er
a
li,
F
a
la
h Sa
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2
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Th
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lar n
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K
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w
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s
:
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ilin
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air
in
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co
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ch
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cr
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lar
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CC B
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li
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C
o
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r
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s
p
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A
uth
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r
:
Falah
Sar
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an
Dep
ar
tm
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f
Ma
th
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E
d
u
ca
tio
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f
a
Un
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Naja
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0
0
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alah
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s
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an
@
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f
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iq
1.
I
NT
RO
D
UCT
I
O
N
Ov
er
th
e
p
ast
ten
y
ea
r
s
,
tech
n
o
lo
g
y
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as
ad
v
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ce
d
d
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atica
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,
cr
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tem
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n
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ec
tiv
it
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.
Veh
icu
lar
ad
h
o
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etwo
r
k
s
(
VANE
T
s
)
an
d
th
e
in
ter
n
et
o
f
th
in
g
s
(
I
o
T
)
a
r
e
two
o
f
th
e
m
o
s
t
s
ig
n
if
ican
t
in
n
o
v
atio
n
s
.
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h
e
I
o
T
en
co
m
p
ass
es
a
v
ast
ar
r
ay
o
f
in
ter
n
et
-
co
n
n
ec
ted
s
m
ar
t
d
ev
ices,
in
clu
d
in
g
in
d
u
s
tr
ial
m
ac
h
in
es,
wea
r
ab
le
tech
n
o
lo
g
y
,
s
en
s
o
r
s
,
an
d
r
esid
en
ti
al
s
y
s
tem
s
,
th
at
ca
n
f
u
n
ctio
n
with
litt
le
to
n
o
h
u
m
an
in
ter
v
e
n
tio
n
.
VANE
T
s
,
in
co
n
tr
ast,
allo
w
v
e
h
icles
to
co
m
m
u
n
i
ca
te
d
i
r
ec
tly
with
ea
ch
o
th
er
an
d
with
n
ea
r
b
y
in
f
r
astru
ctu
r
e,
aim
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n
g
to
i
m
p
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o
v
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tr
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ic
f
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w,
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e
d
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ce
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o
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s
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d
s
u
p
p
o
r
t
au
to
n
o
m
o
u
s
d
r
iv
i
n
g
[
1
]
,
[
2
]
.
T
h
ese
two
tech
n
o
lo
g
ies
ar
e
ex
ten
s
iv
ely
u
tili
ze
d
in
c
o
n
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o
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o
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ain
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lik
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au
to
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ated
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an
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f
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in
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m
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tellig
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tr
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p
o
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tatio
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,
an
d
h
ea
lth
ca
r
e
m
o
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ito
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in
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.
C
o
n
ce
r
n
s
ab
o
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t
d
ata
s
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r
ity
an
d
s
af
ety
a
r
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o
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alo
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with
th
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s
e.
Data
in
I
o
T
an
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te
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is
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ce
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alicio
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ata
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t,
an
d
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t
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ized
ac
ce
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s
s
in
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it
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tr
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itted
w
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eless
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f
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en
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ettin
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ize
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atien
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ata,
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ile
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m
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ld
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lt
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is
k
y
m
is
co
m
m
u
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icatio
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s
b
etwe
en
ca
r
s
[
3
]
.
E
n
cr
y
p
tio
n
is
o
n
e
o
f
th
e
m
o
s
t
im
p
o
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tan
t
wa
y
s
to
s
af
eg
u
a
r
d
s
u
ch
s
y
s
tem
s
.
B
y
co
n
v
er
tin
g
r
ea
d
a
b
le
d
ata
in
to
a
c
o
d
ed
f
o
r
m
at
th
at
o
n
ly
tr
u
s
two
r
th
y
p
ar
ties
m
a
y
ac
ce
s
s
o
r
d
ec
ip
h
er
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en
cr
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p
t
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f
u
n
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s
.
T
h
is
p
r
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r
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is
ess
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p
r
o
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p
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an
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m
itted
.
Ho
wev
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to
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p
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m
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I
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ev
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m
a
k
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c
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allen
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to
u
s
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co
m
m
o
n
en
cr
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p
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tech
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o
lo
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Simi
lar
to
th
is
,
VANE
T
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s
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co
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m
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q
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in
r
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tim
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wh
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m
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lab
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r
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if
f
ic
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lt to
im
p
l
em
en
t
[
4
]
–
[
6
]
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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v
Ap
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I
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N:
2252
-
8
8
1
4
Hyb
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r
esp
o
n
s
iv
en
ess
.
T
h
e
p
r
o
p
o
s
ed
s
o
lu
t
io
n
s
u
p
p
o
r
ts
m
u
lti
-
u
s
er
au
th
e
n
ticatio
n
,
d
y
n
am
ic
u
p
d
ates,
an
d
s
tr
o
n
g
r
esis
tan
ce
to
attac
k
s
s
u
ch
as
k
e
y
wo
r
d
g
u
ess
in
g
an
d
d
ata
in
f
er
e
n
ce
,
m
ak
in
g
it
well
-
s
u
ited
f
o
r
r
ea
l
-
tim
e,
r
eso
u
r
ce
-
co
n
s
tr
a
in
ed
v
eh
ic
u
lar
co
m
m
u
n
icatio
n
.
Un
lik
e
p
r
e
v
io
u
s
s
tu
d
ies,
t
h
is
wo
r
k
u
n
iq
u
el
y
in
teg
r
ates
lig
h
tweig
h
t
en
cr
y
p
tio
n
an
d
ef
f
ici
en
t
s
ea
r
ch
m
ec
h
an
is
m
s
with
in
a
u
n
if
ie
d
f
r
am
ewo
r
k
tailo
r
ed
s
p
ec
if
ically
f
o
r
th
e
h
ig
h
-
m
o
b
ilit
y
an
d
lo
w
-
laten
cy
r
eq
u
ir
em
e
n
ts
o
f
5
G
-
e
n
ab
led
VANE
T
s
.
Sev
er
al
s
tu
d
ies
h
av
e
ad
d
r
ess
ed
s
ec
u
r
e
d
ata
s
h
ar
i
n
g
in
VANE
T
-
clo
u
d
en
v
ir
o
n
m
en
ts
.
Fo
r
in
s
tan
ce
,
Heg
d
e
et
a
l.
[
7
]
s
u
g
g
est
a
s
ec
u
r
e
,
SE
m
eth
o
d
d
ev
elo
p
e
d
f
o
r
VANE
T
-
clo
u
d
en
v
ir
o
n
m
en
ts
.
T
h
e
au
th
o
r
s
u
s
e
a
r
a
n
d
o
m
q
u
er
y
tr
ap
d
o
o
r
m
ec
h
an
is
m
a
n
d
B
lo
o
m
f
ilter
s
to
e
n
ab
le
k
ey
wo
r
d
-
b
ased
s
ea
r
ch
o
v
e
r
en
cr
y
p
ted
v
eh
icu
lar
d
ata
with
o
u
t
co
m
p
r
o
m
is
in
g
p
r
iv
ac
y
.
B
y
em
p
lo
y
in
g
b
ilin
ea
r
p
air
in
g
an
d
h
ash
-
b
ased
in
d
ex
in
g
,
th
e
s
ch
em
e
en
s
u
r
es
b
o
th
ef
f
icien
c
y
an
d
r
esis
tan
ce
ag
ain
s
t
q
u
er
y
p
atter
n
leak
ag
e.
I
t su
p
p
o
r
ts
d
y
n
am
ic
u
p
d
ates,
lo
w
co
m
p
u
tati
o
n
co
s
ts
,
an
d
s
ec
u
r
e
k
ey
wo
r
d
m
atch
i
n
g
.
An
im
p
r
o
v
ed
a
u
th
en
ticatio
n
m
eth
o
d
f
o
r
VANE
T
s
th
at
s
at
is
f
ies
a
b
alan
ce
b
etwe
en
ef
f
e
ctiv
en
ess
,
s
ec
u
r
ity
,
an
d
u
s
er
p
r
iv
ac
y
is
p
r
o
p
o
s
ed
[
8
]
.
B
y
o
f
f
er
in
g
co
n
d
itio
n
al
tr
ac
ea
b
ilit
y
a
n
d
d
e
f
en
s
e
ag
ain
s
t
f
o
r
g
e
r
y
an
d
r
e
p
lay
attac
k
s
,
it
en
h
an
ce
s
cu
r
r
en
t
m
eth
o
d
s
.
Fo
r
f
ast
au
t
h
en
ticatio
n
ap
p
r
o
p
r
iate
f
o
r
v
e
h
icu
lar
s
ettin
g
s
,
th
e
m
eth
o
d
em
p
l
o
y
s
lig
h
tweig
h
t
o
p
er
atio
n
s
an
d
ellip
tic
cu
r
v
e
cr
y
p
to
g
r
ap
h
y
.
I
ts
s
u
p
er
i
o
r
ity
in
ter
m
s
o
f
co
m
p
u
tatio
n
al
a
n
d
c
o
m
m
u
n
icatio
n
o
v
er
h
ea
d
is
co
n
f
ir
m
ed
b
y
p
er
f
o
r
m
an
ce
s
tu
d
ies.
K
a
n
g
e
t
a
l
.
[
9
]
s
t
u
d
ie
d
t
h
e
i
n
t
eg
r
a
t
i
o
n
o
f
b
l
o
c
k
c
h
a
i
n
te
c
h
n
o
l
o
g
y
i
n
t
o
v
e
h
i
c
u
l
a
r
e
d
g
e
c
o
m
p
u
t
in
g
t
o
a
l
l
o
w
t
h
e
s
e
c
u
r
e
s
h
a
r
i
n
g
o
f
v
e
h
i
c
l
e
i
n
f
o
r
m
a
t
i
o
n
.
I
t
s
u
r
v
e
y
s
e
x
i
s
t
i
n
g
s
o
l
u
t
i
o
n
s
t
o
p
r
o
t
e
c
t
d
a
t
a
s
h
a
r
i
n
g
i
n
V
A
N
E
T
s
,
i
d
e
n
t
i
f
i
es
t
h
e
i
r
li
m
i
t
at
i
o
n
s
,
a
n
d
e
m
p
h
a
s
i
z
e
s
h
o
w
b
l
o
c
k
c
h
ai
n
c
a
n
p
r
o
v
i
d
e
d
e
c
e
n
t
r
a
l
i
z
e
d
a
u
th
e
n
t
i
c
a
t
i
o
n
,
t
a
m
p
er
r
e
s
is
t
a
n
c
e
,
a
n
d
e
f
f
i
c
i
e
n
t
d
a
t
a
ac
c
e
s
s
m
a
n
a
g
e
m
e
n
t
,
m
a
k
i
n
g
i
t
a
s
t
r
o
n
g
c
a
n
d
i
d
a
t
e
f
o
r
f
u
t
u
r
e
v
e
h
i
c
u
l
a
r
n
e
t
w
o
r
k
s
.
Y
a
n
e
t
a
l
.
[
1
0
]
p
r
e
s
e
n
t
a
s
e
c
u
r
e
a
c
c
e
s
s
c
o
n
t
r
o
l
f
r
a
m
e
w
o
r
k
t
h
a
t
c
o
m
b
i
n
e
s
b
l
o
c
k
c
h
a
i
n
w
i
t
h
a
t
t
r
i
b
u
te
-
b
a
s
e
d
s
e
a
r
c
h
a
b
l
e
e
n
c
r
y
p
ti
o
n
(
A
B
S
E
)
.
T
h
i
s
d
e
s
i
g
n
e
n
s
u
r
e
s
d
at
a
c
o
n
f
i
d
e
n
t
i
a
l
it
y
,
f
i
n
e
-
g
r
a
i
n
e
d
ac
c
e
s
s
c
o
n
t
r
o
l
,
a
n
d
e
f
f
i
c
i
e
n
t
k
e
y
w
o
r
d
s
e
a
r
c
h
o
v
e
r
e
n
c
r
y
p
t
e
d
d
a
t
a
.
I
t
a
l
s
o
s
u
p
p
o
r
t
s
d
y
n
a
m
i
c
u
p
d
a
t
e
s
a
n
d
r
e
s
is
ts
c
o
l
l
u
s
i
o
n
a
n
d
k
e
y
w
o
r
d
-
g
u
e
s
s
i
n
g
a
tt
a
c
k
s
,
m
ak
i
n
g
i
t
s
u
it
a
b
l
e
f
o
r
d
e
c
e
n
t
r
a
l
i
z
ed
e
n
v
i
r
o
n
m
e
n
t
s
s
u
c
h
as
I
o
T
a
n
d
V
A
N
E
T
s
.
I
n
th
eir
s
tu
d
y
,
W
an
g
et
a
l.
[
6
]
s
u
g
g
ested
a
lig
h
tweig
h
t
an
d
ef
f
icien
t
s
tr
o
n
g
p
r
iv
ac
y
p
r
eser
v
in
g
au
th
en
ticatio
n
s
ch
em
e
(
L
E
SP
P
)
,
a
lig
h
tweig
h
t
a
n
d
ef
f
icie
n
t
au
th
e
n
ticatio
n
m
eth
o
d
f
o
r
s
ec
u
r
e
a
n
d
p
r
iv
ate
co
m
m
u
n
icatio
n
in
VANE
T
s
.
T
h
is
m
eth
o
d
u
tili
ze
s
s
elf
-
g
en
er
ated
p
s
eu
d
o
n
y
m
o
u
s
id
en
titi
es
an
d
r
elies
o
n
s
y
m
m
etr
ic
en
cr
y
p
tio
n
a
n
d
m
ess
ag
e
au
th
en
ticatio
n
co
d
es
(
MA
C
s
)
,
en
ab
lin
g
f
ast
s
ig
n
in
g
an
d
v
er
if
icatio
n
with
o
u
t
th
e
n
ee
d
f
o
r
co
m
p
u
tatio
n
all
y
in
ten
s
iv
e
p
u
b
lic
-
k
ey
cr
y
p
to
g
r
ap
h
y
.
C
o
m
p
ar
ed
t
o
ex
is
tin
g
p
u
b
lic
-
k
e
y
-
b
ased
s
ch
em
es,
L
E
SP
P
at
tain
ed
a
1
0
2
to
1
0
3
r
ed
u
ctio
n
in
co
m
p
u
tatio
n
c
o
s
t
an
d
d
ec
r
ea
s
ed
co
m
m
u
n
icatio
n
o
v
er
h
ea
d
b
y
4
1
–
7
7
.
6
0
wh
ile
p
r
o
v
id
in
g
r
e
s
ilien
ce
ag
ain
s
t
d
en
ial
-
of
-
s
er
v
ice
(
Do
S
)
attac
k
s
.
T
h
e
k
e
y
m
a
n
ag
em
en
t
ce
n
ter
k
ee
p
s
th
e
a
b
ilit
y
to
r
ev
ea
l
r
ea
l
id
en
titi
es
if
n
ec
ess
ar
y
,
p
r
ese
r
v
in
g
u
s
er
p
r
iv
ac
y
an
d
h
in
d
er
in
g
v
eh
ic
le
tr
ac
k
in
g
ev
en
wh
en
r
o
a
d
s
id
e
u
n
its
ar
e
co
m
p
r
o
m
is
ed
.
R
ec
en
t
wo
r
k
s
b
etwe
en
2
0
2
2
an
d
2
0
2
5
s
h
o
w
s
ig
n
if
ican
t
p
r
o
g
r
ess
in
s
ea
r
ch
ab
le
an
d
attr
i
b
u
te
-
b
ased
en
cr
y
p
tio
n
s
ch
em
es
s
u
itab
le
f
o
r
VANE
T
s
.
Yan
et
a
l.
[
1
1
]
p
r
esen
t
a
s
u
r
v
ey
o
n
AB
SE
,
h
ig
h
lig
h
tin
g
im
p
r
o
v
em
e
n
ts
in
c
o
m
p
u
tatio
n
al
ef
f
icien
cy
,
p
o
licy
h
id
i
n
g
,
a
n
d
f
le
x
ib
ilit
y
in
I
o
T
an
d
v
eh
i
cu
lar
co
n
tex
ts
[
1
1
]
.
Oth
er
r
esear
ch
in
teg
r
ates
ci
p
h
er
tex
t
-
p
o
licy
attr
ib
u
te
-
b
ase
d
en
cr
y
p
tio
n
(
CP
-
AB
E
)
with
b
lo
c
k
ch
ain
an
d
r
ev
o
ca
b
le
ac
ce
s
s
co
n
tr
o
l
f
o
r
v
eh
icu
lar
d
ata
s
h
ar
in
g
,
e.
g
.
,
a
d
y
n
am
i
c
s
o
cial
v
eh
icu
lar
n
etw
o
r
k
(
DSVN
)
m
o
d
el
em
p
lo
y
in
g
o
u
ts
o
u
r
ce
d
r
ev
o
c
ab
le
cip
h
er
tex
t
-
p
o
licy
attr
ib
u
te
-
b
ased
en
cr
y
p
tio
n
(
OR
C
P
-
AB
E
)
with
u
s
er
attr
ib
u
te
r
ev
o
ca
tio
n
an
d
o
u
ts
o
u
r
ce
d
en
c
r
y
p
tio
n
to
r
e
d
u
ce
o
v
er
h
ea
d
[
1
2
]
.
2.
P
RE
L
I
M
I
NAR
I
E
S
T
h
is
s
ec
tio
n
o
u
tlin
es
t
h
e
f
o
u
n
d
atio
n
al
co
n
ce
p
ts
an
d
cr
y
p
to
g
r
ap
h
ic
to
o
ls
u
s
ed
in
th
i
s
r
esear
ch
.
Un
d
er
s
tan
d
in
g
th
e
p
r
in
cip
les
o
f
VANE
T
co
m
m
u
n
icatio
n
,
b
ilin
ea
r
p
air
in
g
,
th
e
lig
h
tweig
h
t
Sp
r
itz
cip
h
er
,
an
d
SE
is
ess
en
tial
.
T
h
ese
p
r
in
cip
les ar
e
im
p
o
r
tan
t
f
o
r
a
p
p
r
ec
iati
n
g
th
e
d
esig
n
an
d
s
ec
u
r
ity
o
f
p
r
o
p
o
s
ed
s
y
s
tem
.
2
.
1
.
Vehicula
r
a
d ho
c
net
wo
rk
s
VANE
T
s
ar
e
a
tailo
r
ed
f
o
r
m
o
f
m
o
b
ile
ad
h
o
c
n
etwo
r
k
s
(
MA
NE
T
s
)
,
wh
er
e
v
e
h
icles
f
itted
with
on
-
b
o
ar
d
d
ev
ices
(
OB
Us)
in
ter
ac
t
d
y
n
a
m
ically
with
ea
ch
o
th
er
an
d
with
f
ix
e
d
ro
ad
s
id
e
u
n
its
(
R
SUs
)
to
s
u
p
p
o
r
t
r
ea
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ity
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o
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ar
a
m
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t im
p
o
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ta
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ce
[
1
3
]
–
[
1
5
]
.
Fu
r
th
er
m
o
r
e
,
th
e
VANE
T
en
v
ir
o
n
m
e
n
t
r
e
q
u
ir
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g
r
estrictio
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s
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c
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em
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e
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e
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cr
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tech
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V2
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ile
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ate
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er
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ts
(
ty
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ically
<
5
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m
s
f
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r
s
af
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m
ess
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am
ically
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icles
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2
.
2
.
Sea
rc
ha
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y
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on
SE
allo
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s
ec
u
r
e
k
ey
wo
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ata
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tiality
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ased
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ased
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tr
o
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ic
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ates.
Fu
r
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o
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s
ea
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ch
ab
le
s
y
m
m
etr
ic
en
cr
y
p
t
io
n
(
SS
E
)
p
r
o
v
id
es
an
ef
f
icie
n
t
m
eth
o
d
f
o
r
en
cr
y
p
ted
s
ea
r
c
h
in
a
clo
u
d
s
er
v
er
(
C
S)
[
1
6
]
–
[
1
9
]
.
R
ec
en
t
ad
v
an
ce
m
en
ts
h
av
e
f
o
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s
ed
o
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ad
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g
SE
to
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ce
-
lim
ited
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ettin
g
s
s
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ch
as
V
ANE
T
an
d
I
o
T
.
Utilizin
g
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ce
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cr
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t
o
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ic
p
r
im
itiv
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li
g
h
tweig
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t
SE
tech
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iq
u
es
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ec
r
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s
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o
m
p
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tin
g
co
s
t
wh
ile
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r
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o
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u
s
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ity
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s
s
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r
an
ce
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,
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ically
ag
ain
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t
k
ey
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d
g
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ess
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g
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d
u
n
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th
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ize
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ac
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s
s
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r
th
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o
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e
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r
id
s
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em
es
th
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teg
r
ate
SE
with
s
tr
ea
m
cip
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e
r
s
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lik
e
Sp
r
itz,
im
p
r
o
v
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p
er
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o
r
m
a
n
ce
wh
ile
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ctin
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p
ted
s
e
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ch
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o
s
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tex
t a
n
d
m
u
ltime
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ia
[
7
]
,
[
2
0
]
,
[
2
1
]
.
2
.
3
.
B
ilin
ea
r
pa
iring
s
T
h
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cip
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er
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etr
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ilin
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r
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air
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en
ab
le
id
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ased
k
ey
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e
r
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i
o
n
a
n
d
S
E
c
o
n
s
t
r
u
c
t
i
o
n
s
[
2
2
]
.
T
h
i
s
p
r
i
m
i
t
i
v
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i
s
u
s
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t
o
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t
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e
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ce
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i
n
V
A
N
E
T
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ea
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ch
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tr
ateg
y
[
2
3
]
.
T
h
ese
p
air
in
g
s
s
atis
f
y
th
e
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r
iter
ia
o
f
ef
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icien
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u
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ilit
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o
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d
e
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d
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ilin
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ity
.
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y
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e
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in
ed
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v
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1
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2
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g
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p
,
[
2
4
]
.
Pair
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ased
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ctio
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s
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w
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icien
t
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d
s
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r
e
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th
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ticatio
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th
e
VANE
T
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tex
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id
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tity
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ased
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ate
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e
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t
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d
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r
ea
s
e
in
f
r
a
s
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d
.
C
u
r
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t
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tem
s
h
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ilin
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r
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in
g
s
in
s
ig
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o
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ith
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s
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s
im
u
ltan
eo
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s
ly
en
s
u
r
e
co
n
f
id
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tiality
an
d
in
teg
r
ity
d
u
r
in
g
V2
I
c
o
m
m
u
n
icatio
n
s
.
Fu
r
th
er
,
th
e
in
te
g
r
atio
n
o
f
p
air
i
n
g
s
in
d
y
n
a
m
ic
SE
s
ch
em
es
allo
ws
r
ea
l
-
tim
e
u
p
d
ates
an
d
s
ca
lab
le
k
ey
w
o
r
d
s
ea
r
ch
in
v
e
h
icu
lar
clo
u
d
s
wh
ile
m
ain
tain
in
g
r
o
b
u
s
t
s
ec
u
r
ity
g
u
ar
a
n
tees su
ch
as
f
o
r
war
d
s
ec
r
ec
y
an
d
u
s
er
au
t
h
en
t
icatio
n
[
2
5
]
,
[
2
6
]
.
2
.
4
.
Sp
rit
z
s
t
re
a
m
cipher
Sp
r
itz,
a
lig
h
tweig
h
t
s
p
o
n
g
e
-
b
ased
s
tr
ea
m
cip
h
er
,
o
f
f
er
s
ef
f
icie
n
t
en
cr
y
p
tio
n
an
d
MA
C
s
u
p
p
o
r
t
—
p
er
f
ec
t
f
o
r
VANE
T
n
o
d
es
w
ith
lim
ited
r
eso
u
r
ce
s
.
Fu
r
t
h
er
,
it
h
as
b
etter
r
an
d
o
m
n
ess
q
u
ality
th
an
ea
r
lier
cip
h
er
s
lik
e
R
C
4
[
2
7
]
,
[
2
8
]
.
B
ec
au
s
e
o
f
its
p
er
m
u
tatio
n
-
b
ase
d
in
ter
n
al
s
tate
an
d
b
y
te
-
o
r
ien
t
ed
d
esig
n
,
Sp
r
itz
is
h
ig
h
ly
s
u
itab
le
f
o
r
s
o
f
twar
e
i
m
p
lem
en
tatio
n
s
in
em
b
e
d
d
ed
v
eh
icu
lar
c
o
m
p
o
n
en
ts
.
I
ts
ad
a
p
tab
ilit
y
allo
ws
f
o
r
b
o
th
e
n
cr
y
p
tio
n
an
d
h
ash
in
g
o
p
er
atio
n
s
with
in
th
e
s
am
e
s
tr
u
ctu
r
e,
d
ec
r
ea
s
in
g
t
h
e
n
ee
d
f
o
r
m
u
ltip
le
cr
y
p
to
g
r
ap
h
ic
m
o
d
u
les.
Sp
r
itz
h
as
lo
wer
laten
cy
an
d
m
em
o
r
y
co
s
t
th
an
b
lo
c
k
cip
h
e
r
s
,
wh
ich
is
ess
en
tial
f
o
r
r
ea
l
-
tim
e
VANE
T
co
m
m
u
n
ica
tio
n
[
2
9
]
,
[
3
0
]
.
Ad
d
itio
n
ally
,
c
o
n
tem
p
o
r
ar
y
s
tu
d
ies
h
a
v
e
r
e
v
ea
led
th
at
Sp
r
itz
is
r
esil
ien
t
to
s
tate
co
llis
io
n
an
d
k
ey
r
ec
o
v
er
y
attac
k
s
,
r
ei
n
f
o
r
cin
g
its
s
u
itab
ilit
y
f
o
r
u
s
e
in
ad
v
e
r
s
ar
ial
an
d
d
y
n
am
ic
e
n
v
ir
o
n
m
en
ts
[
3
1
]
.
2
.
5
.
I
ma
g
e
qu
a
lity
a
nd
s
t
a
t
is
t
ica
l a
na
ly
s
is
E
v
alu
atin
g
th
e
in
te
g
r
ity
an
d
r
o
b
u
s
tn
ess
o
f
en
cr
y
p
ted
im
ag
e
s
r
elies
o
n
well
-
estab
lis
h
ed
m
etr
ics
s
u
ch
as
p
ea
k
s
ig
n
al
-
to
-
n
o
is
e
r
atio
(
PS
NR
)
,
co
r
r
elatio
n
co
ef
f
icien
t
s
,
an
d
en
tr
o
p
y
[
3
2
]
:
‒
PS
NR
i
s
a
s
tan
d
ar
d
m
ea
s
u
r
e
u
s
ed
to
q
u
an
tify
r
ec
o
n
s
tr
u
cti
o
n
q
u
ality
.
I
t
co
m
p
a
r
es
th
e
m
a
x
i
m
u
m
p
o
s
s
ib
le
p
o
wer
o
f
a
s
ig
n
al
(
im
a
g
e)
v
e
r
s
u
s
th
e
p
o
wer
o
f
co
r
r
u
p
tin
g
n
o
i
s
e,
ex
p
r
ess
ed
in
d
ec
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els.
‒
C
o
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r
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l
a
ti
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f
f
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t
a
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e
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a
t
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o
n
s
h
o
u
l
d
b
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e
a
r
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r
o
—
i
n
d
i
c
a
ti
n
g
s
t
r
o
n
g
d
i
f
f
u
s
i
o
n
o
f
i
m
a
g
e
d
a
t
a
.
‒
E
n
tr
o
p
y
,
esp
ec
ially
Sh
an
n
o
n
en
tr
o
p
y
,
e
v
alu
ates
th
e
r
an
d
o
m
n
ess
o
f
p
ix
el
v
alu
e
d
is
tr
ib
u
tio
n
s
.
I
d
ea
l
en
cr
y
p
tio
n
s
ch
em
es
p
u
s
h
en
t
r
o
p
y
v
alu
es
to
war
d
th
e
m
ax
i
m
u
m
(
e.
g
.
,
~
8
b
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8
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b
it
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ay
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ca
le
im
ag
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th
er
e
b
y
m
i
n
im
izin
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in
f
o
r
m
atio
n
leak
ag
e.
‒
Pra
ctica
l
ex
p
er
im
en
ts
also
i
n
co
r
p
o
r
ate
n
o
is
e/cr
o
p
r
o
b
u
s
t
n
ess
—
e.
g
.
,
test
s
in
v
o
lv
in
g
s
alt
-
an
d
-
p
e
p
p
er
n
o
is
e
an
d
d
ata
c
u
t a
ttack
s
u
s
e
PS
NR
to
co
n
f
ir
m
th
e
alg
o
r
it
h
m
’
s
ab
ilit
y
to
m
ain
tain
s
tr
u
ctu
r
al
f
id
elity
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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Ap
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2252
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8
8
1
4
Hyb
r
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1009
3.
DE
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AI
L
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D
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r
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air
in
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f
o
r
in
s
tan
ce
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o
f
f
e
r
s
tr
o
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g
cr
y
p
to
g
r
ap
h
ic
f
ea
tu
r
es
s
u
ch
as
h
ig
h
co
n
f
id
en
tiality
.
Ho
we
v
er
,
th
eir
in
ten
s
iv
e
c
o
m
p
u
tat
io
n
al
r
eq
u
i
r
em
en
ts
m
ak
e
th
em
u
n
s
u
itab
le
f
o
r
en
cr
y
p
tin
g
lar
g
e
am
o
u
n
ts
o
f
d
ata,
p
ar
ticu
lar
ly
in
en
v
ir
o
n
m
en
ts
with
lim
ited
p
r
o
ce
s
s
in
g
r
eso
u
r
ce
s
.
W
h
ile
s
tr
ea
m
cip
h
er
alg
o
r
ith
m
s
s
u
ch
as
Sp
r
itz,
a
n
ewe
r
v
er
s
io
n
o
f
R
C
4
,
s
u
p
p
o
r
t
th
e
en
cr
y
p
tio
n
o
f
lar
g
e
am
o
u
n
ts
o
f
d
ata,
th
ey
lack
k
ey
m
an
ag
em
e
n
t a
n
d
a
u
th
en
ticatio
n
m
ec
h
an
i
s
m
s
.
T
h
is
p
ap
er
s
u
g
g
ests
a
h
y
b
r
id
en
cr
y
p
tio
n
alg
o
r
ith
m
,
n
am
e
d
b
lo
ck
c
h
ain
-
b
ased
lig
h
tweig
h
t
n
etwo
r
k
s
ec
u
r
ity
p
r
o
to
co
l
(
B
L
N
-
SP
)
,
th
at
co
m
b
in
es
lig
h
tweig
h
t
cr
y
p
to
g
r
ap
h
y
,
s
ec
u
r
e
au
th
en
ticatio
n
,
an
d
p
r
iv
ac
y
-
p
r
eser
v
in
g
SE
to
h
an
d
le
th
e
k
ey
ch
allen
g
es
o
f
d
at
a
co
n
f
id
en
tiality
,
ef
f
ec
tiv
e
co
m
m
u
n
icatio
n
,
a
n
d
s
ec
u
r
e
s
to
r
ag
e
i
n
I
o
T
a
n
d
VA
NE
T
en
v
ir
o
n
m
en
ts
.
T
h
e
B
L
N
-
SP
f
r
am
ewo
r
k
co
n
s
is
ts
o
f
tw
o
en
cr
y
p
tio
n
lay
er
s
.
T
h
e
f
ir
s
t
lay
er
u
tili
ze
s
a
lig
h
tweig
h
t
s
tr
ea
m
cip
h
er
(
Sp
r
itz)
to
ef
f
icien
tly
en
cr
y
p
t
b
o
t
h
tex
t
an
d
im
ag
e
d
ata
g
en
er
ated
b
y
v
eh
icu
lar
n
o
d
es.
Fo
r
tex
t
d
ata,
a
d
ir
ec
t
b
y
te
-
o
r
ien
ted
k
ey
s
tr
ea
m
is
ap
p
lied
,
wh
ile
im
ag
e
d
ata
is
p
r
o
ce
s
s
ed
in
b
l
o
ck
s
to
p
r
eser
v
e
in
teg
r
ity
an
d
m
i
n
im
ize
laten
cy
.
T
h
e
s
ec
o
n
d
lay
er
is
r
esp
o
n
s
ib
le
f
o
r
s
ec
u
r
e
k
ey
m
an
a
g
em
en
t
a
n
d
d
is
tr
ib
u
tio
n
u
s
in
g
b
ilin
ea
r
p
air
in
g
,
en
s
u
r
in
g
t
h
at
s
y
m
m
etr
ic
k
e
y
s
ar
e
d
y
n
am
ically
g
en
er
ated
an
d
r
ef
r
esh
e
d
with
o
u
t
r
ely
i
n
g
o
n
a
ce
n
tr
alize
d
a
u
th
o
r
ity
.
On
to
p
o
f
th
ese
lay
er
s
,
th
e
f
r
am
ewo
r
k
in
co
r
p
o
r
ates
SE,
wh
ich
en
a
b
l
es
s
ec
u
r
e
k
e
y
wo
r
d
-
b
ased
s
ea
r
ch
o
v
er
en
cr
y
p
ted
v
eh
icu
la
r
d
ata
s
to
r
e
d
in
th
e
clo
u
d
.
T
h
is
in
teg
r
atio
n
en
s
u
r
es
th
at
wh
ile
d
ata
co
n
f
id
en
ti
ality
is
m
ain
tain
ed
th
r
o
u
g
h
s
tr
o
n
g
en
cr
y
p
tio
n
,
ef
f
ic
ien
t
an
d
p
r
iv
ac
y
-
p
r
eser
v
i
n
g
q
u
e
r
y
ca
p
a
b
ilit
ies
ar
e
s
til
l
s
u
p
p
o
r
ted
f
o
r
r
ea
l
-
tim
e
VAN
E
T
ap
p
licatio
n
s
.
T
h
e
p
r
o
p
o
s
ed
s
y
s
tem
is
s
tr
u
ctu
r
ed
in
to
th
r
ee
f
u
n
ctio
n
al
p
h
ase
s
:
i)
s
en
d
in
g
v
eh
icle
(
SV)
p
h
ase
,
ii)
r
ec
eiv
in
g
v
eh
i
cle
(
R
V)
p
h
ase
,
an
d
iii)
C
S
p
h
ase
.
E
ac
h
v
e
h
icle
ca
n
ac
t
as
a
d
ata
s
en
d
er
o
r
r
ec
eiv
er
d
e
p
en
d
in
g
o
n
its
r
o
le
in
th
e
co
m
m
u
n
icatio
n
s
ce
n
a
r
io
.
T
h
e
d
ata
f
lo
w
p
r
o
ce
ed
s
as
f
o
llo
ws.
3
.
1
.
Send
ing
ph
a
s
e
:
s
endi
ng
v
ehicle
(
da
t
a
g
ener
a
t
i
o
n a
nd
encr
y
ptio
n
)
I
n
th
is
p
h
ase,
th
e
SV
co
llects
r
aw
d
ata
lik
e
s
p
ee
d
lo
g
s
,
tr
a
f
f
ic
co
n
d
itio
n
s
,
ac
cid
en
t
r
ep
o
r
ts
,
g
lo
b
al
p
o
s
itio
n
in
g
s
y
s
tem
(
GPS
)
co
o
r
d
in
ates,
o
r
r
o
a
d
h
az
ar
d
al
er
ts
.
I
f
th
e
d
ata
in
clu
d
es
im
ag
es
(
e.
g
.
,
o
f
r
o
a
d
co
n
d
itio
n
s
o
r
v
eh
icle
in
ci
d
en
t
s
)
,
th
e
v
e
h
icle
ex
tr
ac
ts
m
etad
ata
(
s
u
ch
as
tim
estam
p
,
lo
ca
ti
o
n
,
v
eh
icle
ty
p
e,
o
r
licen
s
e
p
late)
an
d
g
en
er
ates
a
s
et
o
f
r
elev
an
t
k
ey
wo
r
d
s
.
T
h
e
r
aw
d
ata
is
th
e
n
en
cr
y
p
t
ed
u
s
in
g
th
e
Sp
r
itz
alg
o
r
ith
m
.
T
h
e
k
e
y
wo
r
d
s
ar
e
s
ec
u
r
ely
en
co
d
ed
u
s
in
g
th
e
i
n
d
ex
(
I
DX
)
alg
o
r
ith
m
to
co
n
s
tr
u
ct
a
s
ea
r
ch
ab
le
in
d
ex
.
T
h
e
en
cr
y
p
ted
d
ata
an
d
its
in
d
ex
ar
e
u
p
lo
ad
e
d
to
th
e
C
S.
Ma
th
em
atica
lly
,
SV
in
itiates
th
e
s
ch
em
e
b
y
r
u
n
n
i
n
g
a
k
ey
g
en
er
atio
n
(
KE
-
Ge
n
)
alg
o
r
it
h
m
,
wh
ich
in
v
o
lv
es
two
s
tep
s
.
First:
ch
o
o
s
e
an
ellip
tic
cu
r
v
e
g
r
o
u
p
o
f
o
r
d
er
an
d
cr
ea
te
th
e
f
o
llo
win
g
p
ar
am
eter
s
:
is
a
r
an
d
o
m
g
en
er
at
o
r
o
f
,
a
b
i
lin
ea
r
m
ap
:
×
→
,
two
p
u
b
lic
k
e
y
s
,
o
n
e
f
o
r
t
h
e
s
en
d
e
r
v
e
h
icle
an
d
th
e
o
th
e
r
f
o
r
th
e
r
ec
eiv
e
r
v
eh
icle
an
d
two
s
ec
r
et
k
e
y
s
an
d
f
o
r
s
en
d
er
an
d
r
ec
e
iv
er
,
r
esp
ec
tiv
ely
.
T
h
e
n
,
c
o
m
p
u
te
th
e
s
h
ar
ed
s
ec
r
et
k
ey
f
o
r
two
p
ar
ties
.
Seco
n
d
:
I
n
itialize
th
e
s
tate
v
ec
to
r
=
[
0
,
1
,
2
,
…
255
]
,
an
d
b
u
ild
a
k
e
y
s
tr
ea
m
b
y
tr
an
s
f
o
r
m
in
g
th
e
s
h
a
r
ed
s
ec
r
et
k
ey
SV
an
d
R
V
f
r
o
m
p
o
in
ts
o
n
th
e
ellip
tic
cu
r
v
e
to
b
y
tes.
Sp
r
itz
alg
o
r
ith
m
ab
s
o
r
b
s
th
e
in
th
e
s
tate
v
ec
to
r
.
T
h
en
,
(
s
h
u
f
f
le)
s
wap
an
d
m
ix
th
e
s
tate
v
ec
to
r
v
alu
es
to
en
s
u
r
e
r
a
n
d
o
m
n
ess
.
Fin
ally
,
ca
lcu
late
th
e
k
ey
s
tr
e
am
b
ased
o
n
th
e
s
tate
v
ec
to
r
.
T
o
p
r
o
tect
t
h
e
s
en
d
er
v
eh
icle’
s
d
ata
p
r
iv
ac
y
,
SV
f
ir
s
t
u
s
es
th
e
f
ile
en
cr
y
p
tio
n
(
F
-
E
NC
)
alg
o
r
ith
m
to
c
r
ea
te
th
e
s
ea
r
c
h
ab
le
in
d
ex
I
DX;
th
e
alg
o
r
it
h
m
ex
t
r
ac
ts
th
e
m
e
n
tio
n
e
d
k
ey
wo
r
d
s
f
r
o
m
th
e
ex
tr
ac
ted
m
etad
ata
an
d
th
en
c
o
n
s
tr
u
cts
th
e
id
en
tifie
r
co
llecti
o
n
o
f
f
iles
co
n
tain
in
g
ea
c
h
k
e
y
wo
r
d
.
Seco
n
d
,
th
e
F
-
E
NC
alg
o
r
ith
m
en
cr
y
p
ts
th
e
I
DX
u
s
in
g
,
an
d
m
etad
ata
u
s
in
g
b
ef
o
r
e
u
p
lo
ad
in
g
th
em
t
o
C
S.
3
.
2
.
Rec
eiv
ing
ph
a
s
e
:
re
ce
iv
i
ng
v
ehicle
(
s
ea
rc
h query
g
ener
a
t
io
n
)
I
n
th
is
p
h
ase,
an
R
V
n
ee
d
in
g
ac
ce
s
s
to
s
p
ec
if
ic
en
cr
y
p
ted
i
n
f
o
r
m
atio
n
in
C
S
(
e.
g
.
,
r
ec
en
t
ac
cid
en
ts
n
ea
r
its
lo
ca
tio
n
)
,
R
V
g
e
n
er
ates
a
tr
ap
d
o
o
r
as
a
s
ea
r
ch
r
eq
u
est
f
o
r
th
e
s
ea
r
ch
ab
le
k
ey
wo
r
d
in
I
DX,
u
s
in
g
th
e
tr
ap
d
o
o
r
g
e
n
er
ato
r
alg
o
r
ith
m
(
T
-
GE
N
)
b
ased
o
n
th
e
ta
r
g
et
k
ey
wo
r
d
.
T
o
en
s
u
r
e
s
ec
u
r
e
s
e
ar
ch
,
ea
c
h
k
e
y
wo
r
d
ex
tr
ac
ted
f
r
o
m
v
eh
icu
lar
m
e
tad
ata
is
m
ap
p
ed
to
a
u
n
iq
u
e
cr
y
p
to
g
r
a
p
h
i
c
i
d
en
tifie
r
u
s
in
g
a
h
ash
-
b
ased
f
u
n
ctio
n
.
T
h
e
RV
th
en
g
en
er
a
tes
a
n
o
n
-
r
ev
er
s
ib
le
tr
ap
d
o
o
r
b
y
en
cr
y
p
tin
g
th
is
id
en
tifie
r
with
its
s
e
s
s
io
n
k
ey
an
d
p
air
i
n
g
p
ar
am
eter
s
.
T
h
is
p
r
ev
en
ts
th
e
CS
f
r
o
m
in
f
er
r
in
g
th
e
o
r
ig
in
al
k
ey
wo
r
d
an
d
e
n
s
u
r
e
s
t
h
a
t
i
d
e
n
t
i
c
al
q
u
e
r
i
e
s
r
e
m
a
i
n
i
n
d
i
s
ti
n
g
u
i
s
h
a
b
le
,
m
i
t
i
g
a
ti
n
g
k
e
y
w
o
r
d
g
u
e
s
s
i
n
g
a
n
d
s
e
a
r
c
h
-
p
a
t
t
e
r
n
at
t
a
c
k
s
.
3
.
3
.
Ret
rie
v
a
l pha
s
e
:
clo
ud
s
er
v
er
(
s
ea
rc
h query
)
I
n
th
is
p
h
ase,
u
p
o
n
r
ec
ei
v
in
g
th
e
tr
ap
d
o
o
r
f
r
o
m
th
e
R
V,
th
e
CS
u
s
es
th
e
s
ea
r
ch
ab
le
in
d
e
x
alg
o
r
ith
m
(
SR
C
H
-
I
DX
)
alg
o
r
ith
m
to
ch
ec
k
th
e
s
to
r
ed
s
ea
r
ch
ab
le
in
d
ex
es
an
d
co
m
p
ar
es
ea
ch
en
cr
y
p
ted
tr
ap
d
o
o
r
with
all
en
cr
y
p
ted
k
ey
wo
r
d
s
s
av
ed
in
I
DX.
I
f
th
e
tr
ap
d
o
o
r
m
a
tch
es
an
y
k
ey
wo
r
d
in
I
DX,
t
h
en
C
S
r
etu
r
n
s
th
e
co
r
r
esp
o
n
d
in
g
en
cr
y
p
ted
d
ata
(
e.
g
.
,
im
ag
es
o
r
s
en
s
o
r
lo
g
s
)
to
th
e
R
V.
Fin
ally
,
R
V
ca
n
d
e
cr
y
p
t
th
e
en
c
r
y
p
ted
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8
8
1
4
I
n
t J Ad
v
Ap
p
l Sci
,
Vo
l.
1
5
,
No
.
3
,
Sep
tem
b
er
2
0
2
6
:
1
0
0
6
-
1
0
1
4
1010
d
ata
u
s
in
g
th
e
s
h
a
r
ed
s
ec
r
et
k
ey
d
er
iv
e
d
ea
r
lier
b
y
t
h
e
Sp
r
itz
alg
o
r
ith
m
,
en
s
u
r
i
n
g
e
n
d
-
to
-
en
d
co
n
f
id
en
tiality
.
I
n
th
is
s
ch
em
e,
C
S
is
co
n
s
id
er
ed
an
h
o
n
est
b
u
t
in
q
u
is
itiv
e
a
d
v
er
s
ar
y
;
t
h
e
s
er
v
er
d
u
tifu
lly
ex
ec
u
tes
th
e
s
u
g
g
ested
alg
o
r
ith
m
b
u
t
is
cu
r
i
o
u
s
ab
o
u
t
th
e
k
ey
wo
r
d
s
an
d
th
e
en
cr
y
p
ted
f
ile
co
n
te
n
ts
.
A
lg
o
r
ith
m
s
1
to
4
ar
e
th
e
d
etai
ls
o
f
alg
o
r
ith
m
s
KE
-
Gen
,
F
-
E
NC
,
T
-
GE
N,
an
d
SR
C
H
-
I
DX.
Alg
o
r
ith
m
1
.
KE
-
Gen
A:
ap
p
ly
th
e
b
ilin
ea
r
p
air
in
g
s
1
: g
en
er
ate
a
p
r
im
e
n
u
m
b
e
r
,
an
d
s
elec
t a
r
an
d
o
m
g
e
n
er
ato
r
o
f
,
2
: c
h
o
o
s
e
an
ellip
tic
cu
r
v
e
g
r
o
u
p
o
f
o
r
d
er
,
3
: b
u
ild
a
b
ilin
ea
r
m
a
p
×
→
,
4
: p
ick
a
r
a
n
d
o
m
an
d
,
5
: c
alcu
late
th
e
p
u
b
lic
k
ey
s
,
=
an
d
=
.
6
: c
alcu
late
th
e
s
h
ar
ed
k
ey
,
=
(
,
.
)
=
(
,
.
)
=
(
,
)
.
B
:
ap
p
ly
th
e
Sp
r
itz
alg
o
r
ith
m
1
: c
o
n
v
e
r
t
to
an
ar
r
ay
o
f
b
y
tes,
,
an
d
u
s
e
it a
s
a
s
ee
d
f
o
r
S
p
r
itz
cip
h
er
,
2
: b
u
ild
a
s
tate
ar
r
a
y
with
2
5
6
elem
en
ts
,
S
=
[
0
,
1
,
…,
2
5
5
]
,
3
: a
b
s
o
r
b
th
e
elem
en
ts
o
f
in
to
th
e
s
tate
ar
r
ay
S b
y
ad
d
in
g
ea
ch
b
y
te
to
th
e
cu
r
r
en
t e
lem
en
t
in
S,
4
: sh
u
f
f
le
th
e
elem
e
n
ts
o
f
S,
6
: g
en
er
ate
k
ey
s
tr
ea
m
,
7
: r
etu
r
n
.
Alg
o
r
ith
m
2
.
F
-
E
NC
1
: SV
cr
ea
tes th
e
s
ea
r
ch
ab
le
i
n
d
ex
I
DX
f
o
r
all
s
ea
r
ch
a
b
le
k
ey
wo
r
d
s
,
2
: SV
en
cr
y
p
ts
th
e
I
DX,
XOR th
e
tex
t o
f
I
DX
with
an
d
u
p
l
o
ad
s
it to
C
S,
3
: SV
en
cr
y
p
ts
th
e
d
ata
,
XOR th
e
tex
t w
ith
k
ey
s
tr
ea
m
an
d
u
p
lo
ad
s
it to
C
S.
Alg
o
r
ith
m
3
.
T
-
GE
N
1
: RV selects th
e
tr
ap
d
o
o
r
s
,
2
: e
n
cr
y
p
t
s
th
e
tr
ap
d
o
o
r
s
u
s
in
g
3
: sen
d
to
th
e
C
S.
Alg
o
r
ith
m
4
.
SR
C
H
-
I
DX
1
:
C
S
te
s
ts
th
e
s
to
r
ed
s
ea
r
ch
ab
le
in
d
ex
es
an
d
co
m
p
ar
es
ea
ch
en
cr
y
p
te
d
tr
ap
d
o
o
r
with
all
en
cr
y
p
ted
k
ey
wo
r
d
s
s
av
ed
in
I
DX,
2
: CS
r
etr
iev
es a
ll f
iles
co
r
r
esp
o
n
d
in
g
to
t
h
e
tr
ap
d
o
o
r
s
.
4.
T
H
R
E
A
T
M
O
D
E
L
T
h
e
s
y
s
tem
ass
u
m
es
an
h
o
n
e
s
t
-
but
-
cu
r
io
u
s
CS
th
at
ex
ec
u
tes
o
p
er
atio
n
s
co
r
r
ec
tly
b
u
t
at
tem
p
ts
to
in
f
er
s
en
s
itiv
e
in
f
o
r
m
atio
n
s
u
ch
as
k
ey
wo
r
d
s
o
r
m
ess
ag
e
co
n
ten
ts
.
Po
ten
tial
ad
v
er
s
ar
ies
m
a
y
in
clu
d
e
ex
ter
n
a
l
attac
k
er
s
wh
o
attem
p
t
to
in
ter
ce
p
t
v
eh
icu
l
ar
m
ess
ag
es,
in
ject
f
alse
d
ata,
o
r
p
er
f
o
r
m
r
ep
lay
an
d
Sy
b
il
attac
k
s
.
I
n
ter
n
al
ad
v
e
r
s
ar
ies,
s
u
ch
as
co
m
p
r
o
m
is
ed
v
eh
icles
o
r
R
SUs
,
m
ay
attem
p
t
to
m
is
u
s
e
v
alid
cr
ed
en
tials
to
ac
ce
s
s
u
n
au
th
o
r
ized
d
ata.
Attack
s
u
r
f
ac
es
in
clu
d
e
wir
eles
s
co
m
m
u
n
icatio
n
ch
an
n
els,
c
lo
u
d
s
to
r
ag
e,
an
d
k
ey
wo
r
d
s
ea
r
ch
r
eq
u
ests
.
T
h
e
p
r
o
p
o
s
ed
B
L
N
-
SP
s
ch
em
e
m
i
tig
ates
th
ese
th
r
ea
ts
b
y
em
p
lo
y
in
g
b
ilin
ea
r
-
b
ased
m
u
tu
al
au
th
e
n
ticatio
n
,
n
o
n
-
r
e
v
er
s
ib
le
tr
ap
d
o
o
r
s
,
s
ess
io
n
-
b
a
s
ed
s
y
m
m
etr
ic
k
ey
s
,
an
d
tim
estam
p
ed
to
k
en
s
to
p
r
ev
en
t
r
ep
lay
attac
k
s
.
T
h
is
lay
er
ed
s
ec
u
r
ity
m
o
d
el
e
n
s
u
r
es
r
esil
ien
ce
ag
ain
s
t
k
ey
w
o
r
d
g
u
ess
in
g
,
d
ata
in
f
er
en
ce
,
im
p
er
s
o
n
atio
n
,
an
d
tr
af
f
ic
an
aly
s
is
attac
k
s
.
5.
RE
SU
L
T
S AN
D
D
I
SCU
SS
I
O
N
T
h
is
s
ec
tio
n
p
r
esen
ts
a
wid
e
e
v
alu
atio
n
o
f
th
e
p
r
o
p
o
s
ed
e
n
c
r
y
p
tio
n
tech
n
i
q
u
e,
in
teg
r
atin
g
Sp
r
itz
an
d
b
ilin
ea
r
p
air
i
n
g
with
in
a
VANE
T
co
n
tex
t.
Mu
ltip
le
m
etr
i
cs
ar
e
u
s
ed
to
ass
ess
th
e
p
e
r
f
o
r
m
an
ce
,
in
v
o
lv
in
g
au
th
en
ticatio
n
d
elay
,
e
n
cr
y
p
tio
n
tim
e,
a
n
d
im
ag
e
q
u
ality
in
d
icato
r
s
.
T
o
p
r
o
v
e
th
e
ef
f
icie
n
cy
an
d
p
r
ac
ticality
o
f
th
e
p
r
o
p
o
s
ed
m
eth
o
d
,
r
es
u
lts
ar
e
co
m
p
ar
e
d
ag
ain
s
t
class
ic
en
cr
y
p
tio
n
s
tan
d
ar
d
s
.
Ad
v
an
ce
d
e
n
cr
y
p
tio
n
s
tan
d
ar
d
(
AE
S
)
is
a
p
er
tin
en
t
b
aselin
e
f
o
r
c
o
m
p
a
r
is
o
n
am
o
n
g
th
ese,
s
in
ce
it
is
o
f
ten
u
s
ed
to
s
ec
u
r
e
u
p
lo
ad
ed
d
ata
in
cl
o
u
d
en
v
ir
o
n
m
e
n
ts
[
3
3
]
.
I
n
co
n
tr
ast,
th
e
s
u
g
g
ested
tech
n
i
q
u
e
ass
u
m
es
u
s
in
g
th
e
lig
h
tweig
h
t
Sp
r
itz
cip
h
er
,
wh
er
e
th
e
i
n
itial
k
ey
is
s
ec
u
r
ely
d
er
iv
ed
th
r
o
u
g
h
b
ilin
ea
r
p
air
in
g
.
T
h
is
co
m
b
in
atio
n
f
o
cu
s
es
o
n
r
ed
u
cin
g
th
e
co
m
p
u
tatio
n
al
o
v
er
h
ea
d
wh
ile
p
r
eser
v
in
g
s
tr
o
n
g
s
ec
u
r
ity
,
p
ar
ticu
la
r
ly
s
u
ited
f
o
r
th
e
r
eso
u
r
ce
-
co
n
s
tr
ain
ed
an
d
laten
cy
-
s
en
s
itiv
e
n
atu
r
e
o
f
VANE
T
s
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J Ad
v
Ap
p
l Sci
I
SS
N:
2252
-
8
8
1
4
Hyb
r
id
lig
h
tw
eig
h
t e
n
cryp
tio
n
a
n
d
s
ea
r
ch
a
b
le
s
ec
u
r
ity
fr
a
mewo
r
k
fo
r
s
ec
u
r
e
…
(
F
a
ir
o
u
z
S
h
era
li
)
1011
5
.
1
.
T
ex
t
da
t
a
encr
y
ptio
n t
i
m
e
a
na
ly
s
is
T
ab
le
1
d
ep
icts
th
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2252
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8
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[
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A
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T.
K
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