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h
e
i
n
t
u
i
t
i
o
n
i
s
t
i
c
f
u
zzy
m
o
d
el
[
2
]
.
W
S
N
i
s
t
he
t
y
pe
of
ne
t
w
o
r
k
s
t
ha
t
i
s
ba
s
e
d
o
n a
d
-
h
oc
t
e
c
hn
ol
o
gy
but
p
r
ovi
de
s
m
or
e
a
de
q
ua
t
e
a
n
d
s
t
a
bl
e
i
nf
r
a
s
t
r
u
c
t
ur
e
.
W
S
N
pr
ovi
de
s
s
o m
a
ny
a
ppl
i
c
a
t
i
on
s
bot
h m
i
li
t
a
r
y
a
nd
c
i
vi
l
i
a
n e
nv
i
r
o
nm
e
nt
s
.
S
e
c
ur
i
t
y
i
n
W
S
N
i
s
e
m
er
g
i
n
g
m
an
y
r
es
ear
c
h
e
r
s
s
i
n
ce a l
o
t
o
f
a
t
t
ack
s
o
cc
u
r
r
e
d
f
r
e
q
u
e
n
t
l
y
.
T
h
es
e at
t
ack
s
r
eq
u
i
r
es
c
ont
i
n
u
ou
s
de
v
e
l
opm
e
nt
of
de
f
e
ns
e
s
y
s
t
e
m
s
to
f
a
c
e
t
he
s
e
a
t
t
a
c
ks
.
T
he
i
nt
ui
t
i
oni
s
t
i
c
f
uz
z
y
s
e
t
s
pr
o
vi
de
s
a
ve
r
y
e
l
a
s
t
i
c
a
nd s
t
r
on
g m
e
t
hod
s
f
or
de
c
i
s
i
o
n m
a
ki
n
g
w
i
t
hi
n a
ve
r
y
c
ha
ngi
ng
e
nvi
r
o
nm
e
nt
l
ike
W
S
N
.
T
he
r
e
s
t
o
f
t
hi
s
s
e
c
t
i
on p
r
ovi
de
s
i
ns
i
g
ht
s
on
W
S
N
,
Ke
y
di
s
t
r
i
but
i
o
n,
c
r
y
pt
o
gr
a
p
hy
a
nd i
nt
ui
t
i
oni
s
t
i
c
f
uz
z
y
s
e
t
s
.
T
h
os
e
t
o
p
i
c
s
a
r
e
t
h
e
o
r
b
i
t
s
f
o
r
t
h
i
s
r
e
s
e
a
r
c
h
.
1
.
1
.
WS
N
s
A
w
i
re
l
e
s
s
s
e
n
s
o
r
n
e
t
w
o
rk
(
WS
N
) m
e
a
n
s
t
h
e
w
i
r
e
l
e
s
s
n
e
t
w
o
r
k
t
h
a
t
c
o
n
s
i
s
t
s
o
f
s
p
a
t
i
a
l
l
y
d
i
s
t
r
i
b
u
t
e
d
ove
r
a
r
a
n
ge
of
a
ut
o
nom
ous
d
e
vi
c
e
s
by
us
i
n
g s
e
ns
o
r
s
t
o
p
r
ovi
de
t
he
a
bi
l
i
t
y
f
or
c
o
nt
r
ol
l
i
ng t
he
e
n
vi
r
o
nm
e
nt
a
l
co
n
d
i
t
i
o
n
s
.
A
W
S
N
s
y
s
t
em
i
n
co
r
p
o
r
at
es
a
g
at
ew
ay
t
h
at
p
r
o
v
i
d
es
w
i
r
el
es
s
co
n
n
ect
i
v
i
t
y
b
ac
k
t
o
t
h
e
w
i
r
e
d
w
o
r
l
d a
nd
di
s
t
r
i
b
ut
e
d n
o
de
s
.
T
he
wi
r
e
l
e
s
s
p
r
ot
oc
ol
o
f
c
h
oi
c
e
w
o
r
k
s
by
d
e
pe
n
di
n
g
on t
h
e
a
ppl
i
c
a
t
i
on
n
e
e
d
s
a
nd
r
e
q
ui
r
e
m
e
nt
s
[
3]
.
A
p
p
l
i
c
a
t
i
o
n
s
o
f
W
S
N
:
E
n
g
i
n
e
e
r
s
c
r
e
a
t
e
W
S
N
a
p
p
l
i
c
a
t
i
o
n
s
f
o
r
a
r
e
a
s
i
n
v
o
l
v
i
n
g
h
e
a
l
t
h
c
a
r
e
,
u
t
i
l
i
t
i
e
s
,
s
u
r
v
ei
l
l
an
ce an
d
r
em
o
t
e
m
o
n
i
t
o
r
i
n
g
.
I
n
h
eal
t
h
car
e f
i
el
d
,
w
i
r
el
es
s
d
ev
i
ces
cr
eat
e l
es
s
i
n
v
as
i
v
e
m
oni
t
or
i
ng f
o
r
p
a
t
i
e
n
t
s
[
4
]
.
F
o
r
s
e
r
v
i
c
e
s
u
t
i
l
i
t
i
e
s
s
u
c
h
a
s
t
h
e
e
l
e
c
t
r
i
c
i
t
y
p
o
w
e
r
g
r
i
d
,
s
t
r
e
e
t
l
i
g
h
t
s
,
a
n
d
o
u
t
d
o
o
r
w
a
t
e
r
m
uni
c
i
pa
l
s
,
w
i
r
e
l
e
s
s
s
e
ns
or
s
gi
ve
a
l
ow
e
r
-
c
o
s
t
wa
y
fo
r
co
l
l
ect
i
n
g
s
y
s
t
e
m
h
eal
t
h
d
at
a
t
o
d
ecr
eas
e
e
n
er
g
y
u
s
ag
e
a
nd
be
t
t
e
r
m
a
n
a
ge
r
e
s
ou
r
c
e
s
.
R
e
m
ot
e
c
ont
r
o
l
l
i
ng a
nd c
ont
r
ol
c
ove
r
s
a
wi
de
r
a
nge
of
a
p
pl
i
c
a
t
i
ons
i
nc
l
udi
ng
w
ay
s
w
h
er
e
w
i
r
el
es
s
s
y
s
t
e
m
s
can
s
eq
u
el
w
i
r
ed
s
y
s
t
em
s
b
y
d
ecr
eas
i
n
g
c
o
s
t
s
o
f
w
i
r
i
n
g
s
t
r
u
ct
u
r
es
a
nd
a
llo
w
i
ng
m
a
ny
ne
w
t
y
pe
s
o
f
m
e
a
s
ur
e
m
e
nt
a
p
pl
i
c
a
t
i
on
s
.
R
e
m
ot
e
m
oni
t
or
i
n
g
a
nd
s
u
r
ve
i
l
l
a
nc
e
a
ppl
i
c
a
t
i
ons
i
nc
l
u
de
:
a.
I
n
d
us
t
r
i
a
l
l
a
r
ge
m
a
c
hi
ne
m
oni
t
or
i
n
g,
s
a
vi
ng
hum
a
n
l
i
f
e
f
r
o
m
da
nge
r
b.
S
tr
u
c
t
u
r
a
l
m
o
nito
r
ing
f
or
la
r
ge
bu
ild
ing
s
a
nd
br
idg
e
s
c.
E
n
vi
r
o
nm
e
nt
a
l
m
oni
t
or
i
n
g
a
n
d
a
s
s
e
s
s
m
e
n
t
o
f
a
i
r
,
s
o
i
l
,
a
n
d
w
a
t
e
r
[5
]
d.
P
r
o
c
e
s
s
m
oni
t
or
i
ng
f
or
wa
t
c
hi
n
g
ove
r
t
he
s
t
e
ps
i
n
v
ol
ve
d i
n t
he
a
ut
o
m
a
t
e
d pr
oc
e
s
s
e
s
w
i
t
h
out
h
u
m
a
n
i
n
t
e
r
v
e
n
t
i
o
n
.
e.
I
m
p
o
r
t
a
n
t
o
b
j
e
c
t
s
t
r
a
c
k
i
n
g
W
i
r
el
es
s
t
ech
n
o
l
o
g
y
g
i
v
es
m
an
y
ad
v
an
t
a
g
e
s
t
h
at
h
el
p
u
s
er
s
t
o
m
ak
e
w
i
r
ed
an
d
w
i
r
el
es
s
s
y
s
t
e
m
s
an
d
a
l
l
ow
us
e
r
s
t
o
t
a
ke
a
dva
nt
a
ge
of
t
he
gr
e
a
t
e
s
t
t
e
c
hn
ol
o
gy
f
or
t
he
i
r
a
ppl
i
c
a
t
i
o
ns
.
1
.
2
.
C
o
m
p
o
ne
nt
s
o
f
a
W
S
N
N
o
de
A
W
S
N
no
de
ha
s
s
e
ve
r
a
l
t
e
c
hni
c
a
l
i
n
gr
e
di
e
nt
s
i
nv
ol
vi
n
g t
he
r
a
di
o,
ba
t
t
e
r
y
,
m
i
c
r
oc
o
nt
r
ol
l
e
r
,
s
e
ns
o
r
i
n
t
er
f
ace a
n
d
a
na
l
o
g c
i
r
c
ui
t
.
W
he
n
W
S
N t
e
c
hn
ol
o
gy
i
s
us
e
d,
t
r
a
de
-
of
f
s
a
m
ong t
hos
e
c
o
m
pos
t
s
m
us
t
be
ke
pt
i
n
m
i
n
d
.
I
n
s
y
s
t
e
m
s
t
h
o
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e
a
r
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m
a
i
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l
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b
a
t
t
e
r
y
-
p
o
w
e
r
e
d,
t
h
e
us
e
of
m
or
e
f
r
e
que
nt
r
a
di
o
be
s
i
de
s
hi
g
he
r
r
a
di
o
da
t
a
r
a
t
e
s
i
m
pl
i
e
s
m
or
e
po
w
e
r
c
o
ns
um
pt
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on.
Us
ua
l
l
y
t
w
o
t
o
t
h
r
ee
y
ear
s
b
at
t
er
y
l
i
f
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i
s
r
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q
u
i
r
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,
s
o
m
o
s
t
o
f
t
h
e
W
S
N
s
y
s
t
em
s
t
o
d
ay
ar
e
b
u
i
l
t
o
n
Z
i
g
B
ee
b
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cau
s
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o
f
t
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e l
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w
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n Z
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t
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ba
t
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w
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m
a
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nol
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a
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v
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ng
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t
o t
he
a
va
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l
a
bi
l
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t
y
of
I
E
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E
8
0
2.
11
ba
n
dw
i
dt
h,
W
i
-
F
i
w
i
l
l
b
e
a
n
i
n
t
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r
e
s
t
i
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g
t
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c
h
n
o
l
o
g
y
[6
].
F
ig
ur
e
1
.
G
e
n
e
ra
l
f
o
rm
o
f
WS
N
Evaluation Warning : The document was created with Spire.PDF for Python.
IJ
A
A
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I
S
S
N
:
225
2
-
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14
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s
o be
a
bl
e
t
o p
owe
r
u
p,
wa
ke
a
nd
r
e
t
ur
n t
o s
l
e
e
p
m
ode
i
n a
n e
f
f
i
c
i
e
nt
w
a
y
.
W
S
Ns
M
i
c
r
op
r
o
c
e
s
s
o
r
di
r
e
c
t
i
o
n i
nv
ol
ve
r
e
duc
i
ng c
o
ns
um
pt
i
on
of
po
w
e
r
w
hi
l
e
r
e
s
e
r
vi
ng
or
i
nc
r
e
a
s
i
n
g p
r
oc
e
s
s
or
s
pe
e
d.
M
u
c
h l
i
ke
a
ny
r
a
di
o c
h
oi
c
e
,
t
he
p
r
oc
e
s
s
i
ng s
pe
e
d a
n
d po
we
r
c
o
ns
um
pt
i
on t
r
a
de
-
o
f
f
i
s
a
ke
y
i
s
s
ue
a
nd c
onc
e
r
n
w
he
n
s
e
l
e
c
t
i
ng
W
S
N
s
pr
oc
e
s
s
o
r
s
[
7
]
.
T
hi
s
m
a
ke
s
pr
oc
e
s
s
or
s
o
f
t
he
f
a
m
i
l
y
x86
a
r
c
hi
t
e
c
t
u
r
e
a
ve
r
y
ha
r
d
opt
i
on
f
or
an
y
b
at
t
er
y
-
pow
e
r
e
d
un
its
.
T
h
e
r
es
t
o
f
t
h
i
s
p
a
p
e
r
i
s
cat
eg
o
r
i
zed
as
f
o
l
l
o
w
s
;
s
ec
t
i
on
on
e
p
r
o
v
i
d
es
l
i
t
er
at
u
r
e
r
ev
i
e
w
an
d
pr
e
l
i
m
i
na
r
i
e
s
f
or
t
he
t
e
c
h
n
ol
ogi
e
s
a
n
d m
e
tho
ds
us
e
d i
n t
hi
s
r
e
s
e
a
r
c
h;
s
e
c
t
i
on
t
w
o
pr
o
vi
de
s
t
he
i
nt
r
o
duc
e
d
m
o
d
e
l
f
o
r
s
e
c
u
r
i
n
g
W
S
N
s
;
t
h
e
e
x
p
e
r
i
m
e
n
t
a
l
r
e
s
u
l
t
s
p
e
r
f
o
r
m
e
d
i
n
t
h
i
s
r
e
s
e
a
r
c
h
i
s
i
l
l
u
s
t
r
a
t
e
d
i
n
s
e
c
t
i
o
n
t
h
r
e
e
;
f
i
na
l
l
y
t
he
c
on
c
l
us
i
o
ns
dr
a
w
n
f
r
om
t
hi
s
r
e
s
e
a
r
c
h
i
s
f
i
gu
r
e
d
out
i
n
s
e
c
t
i
o
n
fo
u
r
.
2.
R
ES
EA
R
C
H
M
ETH
O
D
2
.
1
.
I
n
tu
i
ti
o
n
i
s
ti
c
F
u
zzy
S
e
t
s
I
nt
ui
t
i
oni
s
t
i
c
f
uz
z
y
s
e
t
(
I
F
S
)
,
i
nt
r
o
duc
e
d
by
A
t
a
na
s
s
o
v i
s
c
on
s
i
de
r
e
d a
p
ow
e
r
f
ul
t
o
ol
t
o
ha
n
dl
e
de
a
l
w
i
t
h va
g
ue
ne
s
s
.
A p
r
om
i
n
e
n
t
o
b
v
i
o
u
s
c
h
a
r
a
c
t
e
r
i
s
t
i
c
o
f
I
F
S
i
s
t
h
a
t
i
t
a
s
s
i
g
n
s
t
o
e
a
c
h
e
l
e
m
e
n
t
f
i
r
s
t
a
m
e
m
be
r
s
hi
p
d
e
gr
e
e
a
n
d s
e
c
o
ndl
y
a
no
n
-
m
e
m
be
r
s
hi
p d
e
g
r
e
e
,
a
n
d t
h
us
,
t
he
I
F
S
c
ons
t
i
t
ut
e
s
a
n a
d
va
nc
e
m
e
nt
a
nd e
xt
e
n
s
i
o
n
of
Z
a
de
h’
s
f
uz
z
y
s
e
t
,
w
hi
c
h
a
s
s
i
gns
o
nl
y
a
m
e
m
be
r
s
hi
p
de
g
r
e
e
t
o
eac
h
el
e
m
en
t
[8
]
.
M
a
n
y
a
ut
h
or
s
ha
ve
p
a
i
d a
t
t
e
nt
i
on
f
or
t
he
a
ppl
i
c
a
t
i
ons
o
f
t
he
I
F
S
t
he
or
y
.
T
h
os
e
a
p
pl
i
c
a
t
i
ons
a
nd
t
he
or
i
e
s
h
a
s
be
e
n
s
uc
c
e
s
s
f
ul
l
y
us
e
d a
n
d a
p
pl
i
e
d
i
n di
f
f
e
r
e
nt
f
i
e
l
ds
s
uc
h a
s
;
l
ogi
c
p
r
og
r
a
m
m
i
ng [
9]
,
m
e
dic
a
l
di
a
gn
os
i
s
,
de
c
i
s
i
o
n
m
a
k
in
g pr
ob
l
e
m
s
e
t
c
.
Re
c
e
n
t
l
y
v
a
r
i
o
u
s
a
p
p
l
i
c
a
t
i
o
n
s
o
f
I
F
S
c
l
u
s
t
e
r
i
n
g
a
n
d
c
l
a
s
s
i
f
i
c
a
t
i
o
n
o
f
a
r
t
i
f
i
c
i
a
l
i
nt
e
l
l
i
ge
nc
e
ha
ve
a
ppe
a
r
e
d;
f
or
e
xa
m
pl
e
(
I
F
N
N)
i
nt
ui
t
i
on
i
s
t
i
c
f
uz
z
y
ne
ur
a
l
ne
t
w
or
ks
,
(
I
F
E
S
)
i
nt
ui
t
i
oni
s
t
i
c
f
u
z
z
y
e
x
p
e
r
t
s
y
s
t
e
m
s
,
(
I
F
M
L
)
i
n
t
u
i
t
i
o
n
i
s
t
i
c
f
u
z
z
y
m
a
c
h
i
n
e
l
e
a
r
n
i
n
g
[
9
]
.
(
I
F
D
M
)
i
n
t
u
i
t
i
o
n
i
s
t
i
c
f
u
z
z
y
d
e
c
i
s
i
o
n
m
a
k
i
n
g
,
(
I
F
S
R
)
i
n
t
u
i
t
i
o
n
i
s
t
i
c
f
u
z
z
y
s
e
m
a
n
t
i
c
r
e
p
r
e
s
e
n
t
a
t
i
o
n
s
e
t
c
.
I
n
t
u
i
t
i
o
n
i
s
t
i
c
f
u
z
z
y
s
e
t
s
:
L
et
a
s
et
E
b
e
f
i
x
ed
.
A
n
I
F
S
A*
i
n
Е
i
s
a
n
ob
j
ec
t
h
a
v
i
ng
t
he
f
o
r
m
:
A*
=
{
〈
x
,
µ
A
(
x
)
,
ν
A
(
x
)
〉
|
x
∈
E
}
,
F
i
g
u
r
e 2
.
S
p
a
c
e
A
l
l
o
c
a
t
i
o
n
o
f
I
F
S
w
h
e
re
t
h
e
f
u
n
c
t
i
o
n
s
µ
A
(
x
):
E
→
[
0
,
1
]
a
n
d
ν
A
(
x
):
E
→
[
0
,
1
]
d
e
fi
n
e
t
h
e
d
e
g
re
e
o
f
m
e
m
b
e
rs
h
i
p
a
n
d
t
h
e
d
e
gr
e
e
o
f
non
-
m
e
m
be
r
s
hi
p
o
f
t
he
e
l
e
m
e
nt
x
∈
E
t
o
t
h
e
s
e
t
A
,
w
h
i
c
h
i
s
a
s
u
b
s
e
t
o
f
E
(
f
o
r
s
i
m
p
l
i
c
i
t
y
b
e
l
o
w
w
e
s
h
a
l
l
w
r
i
t
e
A
i
n
s
t
ead
o
f
A
*
)
,
r
es
p
ect
i
v
el
y
,
a
n
d
f
o
r
ev
e
r
y
x
∈
E:
0
≤
µ
A
(x
)
+
ν
A(
x
)
≤
1
.
2
.
1
.
1
.
I
n
tu
i
ti
o
n
i
s
ti
c
F
u
z
z
y
S
e
ts
(I
F
S
)
M
o
de
l
F
or
t
he
p
ur
p
os
e
o
f
p
r
ovi
di
n
g
t
he
a
c
c
ur
a
t
e
s
i
z
e
of
t
he
i
nt
e
r
m
e
di
a
t
e
e
nc
r
y
pt
i
on
ke
y
,
t
h
e
a
l
go
r
i
t
hm
m
us
t
ke
e
p t
r
a
c
k of
t
h
e
r
a
pi
dl
y
c
ha
n
gi
n
g
p
ar
am
et
er
s
i
n
t
h
e
W
S
N
.
H
e
n
ce t
h
e ex
p
ec
t
ed
l
ev
el
o
f
s
ecu
r
i
t
y
de
pe
n
ds
m
a
i
nl
y
on
t
he
di
f
f
i
c
u
l
t
y
of
br
e
a
ki
n
g
t
he
s
e
c
r
e
t
ke
y
be
t
w
e
e
n
e
a
c
h
pa
i
r
of
c
om
m
uni
c
a
t
i
ng
de
vi
c
e
s
.
T
he
c
r
uc
i
a
l
s
t
e
p
i
n
t
he
pr
o
po
s
e
d
m
ode
l
i
s
t
he
de
s
i
g
n
of
t
he
I
F
S
f
u
nc
t
i
o
n
t
h
a
t
pr
o
d
uc
e
s
t
h
e
act
u
al
s
i
ze
of
t
he
s
e
s
s
i
on
ke
y
(
i
nt
e
r
m
e
di
a
t
e
e
nc
r
y
pt
i
o
n
ke
y
)
by
p
r
oc
e
s
s
i
ng t
he
pa
r
a
m
e
t
e
r
s
gi
ve
n
.
T
hi
s
p
r
oc
e
s
s
h
a
ndl
e
s
fi
v
e
v
a
ri
a
b
l
e
s
(N
o
d
e
s
C
o
u
n
t
(NC
),
N
o
d
e
L
o
g
(
N
L
),
T
r
u
s
t
e
d
N
e
i
g
h
b
o
rs
C
o
u
n
t
(T
N
C
),
F
re
q
u
e
n
c
y
o
f
k
e
y
C
ha
n
ge
s
(
F
K
C
)
a
n
d L
e
n
gt
h o
f
T
e
m
por
a
r
i
l
y
K
ey
(
L
T
K
)
)
each
o
f
t
h
o
s
e v
a
r
i
ab
l
es
w
i
l
l
h
av
e a
d
eg
r
ee
o
f
m
e
m
be
r
s
hi
p
µA
(
x
)
a
nd
a
de
gr
e
e
o
f
no
n
-
m
e
m
be
r
s
hi
p
νA
(
x)
a
s
i
l
l
u
s
t
r
a
t
e
d
b
e
l
o
w
:
1.
N
o
d
e
s
c
o
u
n
t
(
NC
):
a
c
o
unt
e
r
I
nt
ui
t
i
o
ni
s
t
i
c
f
uz
z
y
va
r
i
a
bl
e
t
ha
t
h
ol
ds
t
he
num
be
r
of
n
ode
s
c
u
r
r
e
nt
l
y
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
SN
:
2
252
-
88
14
IJ
A
A
S
V
o
l
.
7
,
N
o
.
3
,
S
e
pt
e
m
be
r
2
0
18
:
273
–
2
85
2
76
r
e
g
i
s
t
e
r
e
d
t
o
t
h
e
W
S
N
t
a
ki
n
g
t
w
o
f
uz
z
y
va
l
u
e
s
a.
S
m
a
l
l
w
i
t
h
µ
A
(
s
m
l
)
a
n
d
ν
A
(
s
m
l
)
b.
Ma
n
y
w
i
t
h
µ
A
(
m
a)
an
d
ν
A
(
m
a)
2.
N
o
d
e
l
o
g
(
NL
):
a
n I
nt
ui
t
i
o
ni
s
t
i
c
f
uz
z
y
va
r
i
a
bl
e
t
ha
t
m
oni
tor
s
t
he
hi
s
t
o
r
y
of
t
he
n
ode
’
s
a
ut
he
nt
i
c
a
t
i
on
a
t
t
e
m
p
t
s
,
t
h
i
s
v
a
r
i
a
b
l
e
t
a
k
e
s
t
h
r
e
e
v
a
l
u
e
s
:
a.
G
ood
:
t
he
no
d
e
ha
d be
e
n r
e
g
i
s
t
e
r
e
d
m
a
n
y
t
i
m
e
s
a
n
d
c
a
u
s
e
s
n
o
s
u
s
c
e
p
t
i
b
i
l
i
t
y
w
i
t
h
µ
A
(
G
o
)
a
nd
ν
A
(G
o
)
b.
M
ode
r
a
t
e
:
I
n
s
t
a
t
e
s
t
ha
t
t
he
no
de
ha
d be
e
n r
e
gi
s
t
e
r
e
d
m
a
ny
t
im
e
s
but
c
a
us
e
s
s
m
a
l
l
num
be
r
of
s
u
s
c
e
p
t
i
b
i
l
i
t
i
e
s
w
i
t
h
µ
A
(
M
od)
an
d
ν
A
(
M
o
d)
c.
Ba
d
:
d
e
c
l
a
r
e
s
t
h
a
t
t
h
e
n
o
d
e
i
s
a
p
o
t
e
n
t
i
a
l
r
i
s
k
e
i
t
h
e
r
b
y
i
t
s
s
e
l
f
o
r
t
h
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t
ua
l
l
e
n
gt
h
of
t
he
s
e
s
s
i
o
n
ke
y
.
2.
2
.
K
ey
D
i
s
t
r
i
b
u
t
i
o
n
K
e
y
di
s
t
r
i
b
ut
i
on m
i
ght
be
d
e
f
i
ne
d a
s
t
he
pr
oc
e
s
s
of
di
s
t
r
i
b
ut
i
ng (
c
r
y
pt
og
r
a
phi
c
)
ke
y
s
t
o di
f
f
e
r
e
nt
pa
r
t
i
e
s
.
U
s
ua
l
l
y
t
hi
s
di
s
t
r
i
but
i
on
i
nc
l
ud
e
s
t
e
c
hni
que
s
r
e
ga
r
d
e
d
"
o
ut
-
of
-
ba
n
d"
,
i
.
e
.
t
e
c
h
ni
q
ue
s
t
ha
t
d
on'
t
us
e
t
he
c
ha
n
ne
l
a
ga
i
n
of
l
a
t
e
r
c
o
nne
c
t
i
ons
t
o t
r
a
ns
m
i
t
ke
y
s
.
A
l
t
e
r
n
a
t
i
ve
m
e
t
hod f
or
ke
y
di
s
t
r
i
bu
t
i
on c
a
n be
a
c
hi
e
ve
d
t
hr
ou
g
h t
he
r
e
l
y
i
ng o
f
t
he
di
s
t
r
i
but
i
n
g ne
w
ke
y
s
o
nt
o t
he
s
a
f
e
di
s
t
r
i
b
ut
i
o
n o
f
ol
d
ke
y
s
,
t
ha
t
'
s
wha
t
a
K
DC
i
s
doi
n
g
[1
0
].
T
h
e
s
t
a
n
d
a
r
d
m
e
a
n
i
n
g
f
o
r
d
i
s
t
r
i
b
u
t
i
n
g
k
e
y
s
p
r
o
p
o
s
e
a
d
m
i
n
i
s
t
r
a
t
i
o
n
o
v
e
r
t
h
e
e
n
t
i
r
e
l
i
f
e
t
i
m
e
o
f
t
h
e
ke
y
.
Ke
y
m
a
na
ge
m
e
nt
a
nd di
s
t
r
i
but
i
o
n i
s
a
p
i
e
c
e
of
ke
y
a
d
m
i
ni
s
t
r
a
t
i
on,
h
owe
ve
r
i
t
a
ddi
t
i
ona
l
l
y
i
nc
l
ude
s
ke
y
cr
eat
i
o
n
,
k
ey
e
s
cr
o
w
(
f
o
r
r
ei
n
f
o
r
cem
en
t
p
u
r
pos
e
s
)
,
ke
y
e
r
a
s
ur
e
,
ke
y
r
e
p
u
di
a
t
i
on,
ke
y
ut
i
l
i
z
a
t
i
on a
nd
ke
y
t
r
us
t
i
n
a
d
m
i
n
i
s
t
r
a
t
i
o
n
.
C
r
y
pt
o
gr
a
p
hy
i
s
l
i
ke
w
i
s
e
us
e
d t
o
he
l
p t
he
p
r
oc
e
d
ur
e
s
f
o
r
va
l
i
da
t
i
n
g e
nt
i
t
i
e
s
be
t
w
e
e
n s
e
t
s
of
n
o
de
s
.
A
ut
he
nt
i
c
a
t
i
o
n
r
ul
e
s
a
nd
pr
o
t
oc
ol
s
a
r
e
a
b
o
ut
di
s
s
e
m
i
na
t
ion a
n
d a
dm
i
n
i
s
t
r
a
t
i
o
n
o
f
s
e
c
r
e
t
k
e
y
s
[
1
1
]
.
K
e
y
m
a
na
ge
m
e
nt
a
nd
di
s
t
r
i
b
ut
i
o
n
i
n a
n a
pp
r
op
r
i
a
t
e
d e
n
vi
r
onm
e
nt
i
s
a
us
a
ge
of
di
s
pe
r
s
e
d v
e
r
i
f
i
c
a
t
i
on
pr
ot
oc
ol
s
.
B
a
s
e
d
on
t
hi
s
t
ho
u
ght
m
a
ny
k
e
y
di
s
s
e
m
i
na
t
ion
a
n
d
ve
r
i
f
i
c
a
t
i
on
c
on
ve
nt
i
o
ns
ha
ve
be
e
n
p
r
o
p
os
e
d
.
G
e
n
e
r
a
l
l
y
,
a
l
l
p
r
o
t
o
c
o
l
s
an
d
m
ech
an
i
s
m
s
e
x
p
ect
t
h
at
s
o
m
e s
ecr
et
d
at
a
i
s
h
el
d
at
f
i
r
s
t
b
y
ev
er
y
m
a
na
ge
m
e
nt
uni
t
.
A
ut
he
nt
i
c
a
t
i
on a
nd
ve
r
i
f
i
c
a
t
i
on i
s
a
c
c
o
m
pli
s
he
d
by
o
ne
c
e
nt
r
a
l
no
d
e
e
x
hi
bi
t
i
ng
t
h
e
ot
h
e
r
t
h
a
t
m
a
n
a
g
e
s
t
h
a
t
k
e
y
.
A
l
l
f
r
a
m
e
w
o
r
k
s
a
c
c
e
p
t
t
h
a
t
s
t
r
a
t
e
g
y
c
o
n
d
i
t
i
o
n
i
s
e
x
c
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pt
i
o
na
l
l
y
u
ns
t
a
bl
e
a
n
d
i
s
ope
n
f
o
r
a
s
s
a
ul
t
.
S
o a
n
y
m
e
s
s
a
ge
a
r
r
i
ve
d f
r
om
a
c
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nt
r
a
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uni
t
m
us
t
ha
ve
i
t
s
a
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nt
i
c
a
t
i
on,
i
nt
e
gr
i
t
y
a
nd f
r
e
s
hne
s
s
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
SN
:
2
252
-
88
14
IJ
A
A
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V
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l
.
7
,
N
o
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3
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pt
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be
r
2
0
18
:
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–
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85
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78
c
on
f
i
r
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e
d.
T
o
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c
c
om
pl
i
s
h t
he
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bje
c
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,
m
os
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f
r
a
m
e
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or
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e
d t
o d
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pe
n
d
on a
c
o
nf
i
r
m
a
t
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on s
e
r
ve
r
a
n
d
t
h
i
s
s
e
r
v
e
r
o
u
g
ht
t
o
ha
ve
t
he
a
c
c
om
pa
ny
i
ng
h
i
ghl
i
g
ht
s
[
1
2]
.
A
b
i
l
i
t
y
:
An
A
ut
he
nt
i
c
a
t
i
on
s
e
r
ve
r
c
o
nve
y
s
g
r
e
a
t
q
ua
l
i
t
y
s
e
s
s
i
on
ke
y
s
a
nd
di
s
pe
r
s
e
s
t
he
m
t
o t
h
e
as
k
i
n
g
f
o
r
p
r
i
n
ci
p
al
s
s
af
el
y
.
T
r
u
s
t
a
b
i
l
i
t
y
:
A
u
t
h
e
n
t
i
cat
i
o
n
s
er
v
e
r
k
eep
s
u
p
a t
ab
l
e co
n
t
ai
n
i
n
g
a
n
am
e a
n
d
a p
r
i
v
at
e
k
ey
f
o
r
ev
er
y
u
n
i
t
.
T
h
e
s
e
c
r
e
t
k
e
y
i
s
u
t
i
l
i
z
e
d
jus
t
t
o c
o
nf
i
r
m
uni
t
'
s
a
c
t
i
ons
t
o
t
he
ve
r
i
f
i
c
a
t
i
o
n s
e
r
ve
r
a
nd t
o t
r
a
ns
m
i
t
m
e
s
s
a
ge
s
s
a
f
e
l
y
be
t
w
e
e
n
c
us
t
om
e
r
f
or
m
s
a
nd t
he
c
on
f
i
r
m
a
t
i
on s
e
r
ve
r
[
9
]
.
K
e
y
di
s
t
r
i
b
ut
i
on a
n
d
va
l
i
da
t
i
o
n
P
r
ot
oc
ol
s
a
r
e
i
s
ol
a
t
e
d i
n
t
o
t
w
o
cl
as
s
i
f
i
cat
i
o
n
s
t
o
as
s
u
r
e t
h
e
co
n
f
i
r
m
at
i
o
n
o
f
a m
es
s
ag
e.
T
o
b
eg
i
n
w
i
t
h
cl
as
s
ut
i
l
i
z
e
s
nonc
e
a
nd t
e
s
t
/
r
e
a
c
t
i
on
ha
n
ds
ha
ke
t
o c
he
c
k f
r
e
s
h
ne
s
s
,
i
l
l
us
t
r
a
t
i
on i
s
N
e
e
d
ha
m
-
S
c
hr
oe
de
r
P
r
ot
oc
ol
.
S
eco
n
d
cl
as
s
i
f
i
cat
i
o
n
u
t
i
l
i
zes
t
i
m
es
t
a
m
p
s
an
d
ex
p
ect
t
h
at
al
l
m
ac
hi
ne
s
i
n a
pp
r
op
r
i
a
t
e
d f
r
a
m
e
wor
k a
r
e
c
l
oc
k
-
s
y
nc
h
r
o
ni
z
e
d;
c
a
s
e
i
s
K
e
r
be
r
os
P
r
ot
oc
ol
[
1
3
]
.
2.
2
.
1
.
E
n
cry
p
t
i
o
n
E
nc
r
y
pt
i
on
i
s
t
he
t
r
a
ns
f
or
m
a
t
i
ons
of
e
l
e
c
t
r
o
ni
c
da
t
a
f
r
om
a
f
o
r
m
t
o a
not
he
r
,
a
ka
c
i
ph
e
r
t
e
xt
,
w
hi
c
h
di
f
f
i
c
ul
t
t
o be
u
nde
r
s
t
o
o
d o
r
de
c
r
y
pt
by
a
ny
o
ne
e
xc
e
pt
a
ut
h
o
r
i
z
e
d u
ni
t
s
.
T
he
m
a
in r
e
a
s
o
n
a
n
d goa
l
o
f
e
nc
r
y
pt
i
on i
s
t
o pr
e
s
e
r
ve
t
he
s
e
c
r
e
c
y
a
nd c
o
nf
i
de
nt
i
a
l
i
t
y
of
di
gi
t
a
l
l
y
s
t
or
e
d or
t
r
a
ns
m
i
t
t
e
d da
t
a
f
i
l
e
s
t
hr
ou
g
h
t
he
I
nt
e
r
ne
t
o
r
ot
he
r
c
om
put
e
r
ne
t
w
o
r
ks
us
e
d.
M
ode
r
n c
i
phe
r
i
n
g a
l
g
o
r
i
t
hm
s
pl
a
y
a
t
r
u
l
y
c
r
uc
i
a
l
p
a
r
t
i
n
t
h
e
s
ecu
r
i
t
y
an
d
as
s
u
r
a
n
ce
o
f
el
ect
r
o
n
i
c
co
m
m
u
n
i
cat
i
o
n
s
y
s
t
em
s
as
t
h
ey
ca
n
p
r
es
er
v
e
b
o
t
h
c
o
n
f
i
d
en
t
i
al
i
t
y
an
d
t
h
e
f
o
l
l
o
w
i
n
g
v
i
t
a
l
k
e
y
s
e
c
u
r
i
t
y
e
l
e
m
e
n
t
s
[
1
4
]
.
A
u
t
h
e
n
t
i
c
i
t
y
:
T
he
s
o
u
r
c
e
of
a
m
e
s
s
a
ge
c
oul
d
be
a
s
s
ur
e
d
a
nd
c
on
f
i
r
m
e
d.
I
nt
e
gr
i
t
y
:
a
pr
o
of
o
f
t
h
e
cas
e
t
ha
t
m
e
s
s
a
ge
c
ont
e
nt
s
ha
ve
b
e
e
n m
odi
f
i
e
d
o
r
n
ot
s
i
nc
e
i
t
s
t
r
a
ns
m
i
s
s
i
on.
N
on
-
r
e
p
u
d
i
a
t
i
o
n
:
t
h
e
o
r
i
g
i
n
a
t
i
n
g
u
n
i
t
of
a
m
e
s
s
a
ge
c
a
nn
ot
c
l
a
i
m
t
ha
t
t
he
m
e
s
s
a
ge
doe
s
not
be
l
o
n
g
t
o
hi
m
[
3]
.
S
ym
m
e
t
r
i
c
c
i
phe
r
s
(
s
i
n
gl
e
ke
y
e
nc
r
y
pt
i
o
n)
a
r
e
t
he
t
y
pe
of
e
nc
r
y
p
t
i
o
n
i
n
w
h
i
c
h
a
l
l
e
n
t
i
t
i
e
s
s
h
a
r
e
o
n
e
s
e
c
r
e
t
ke
y
,
f
o
r
bot
h c
i
p
he
r
i
n
g a
n
d d
e
c
i
p
he
r
i
ng a
f
i
l
e
.
AE
S
i
s
c
ons
i
de
r
e
d t
o b
e
o
ne
o
f
t
he
m
os
t
w
i
d
e
ly u
s
e
d
s
i
n
g
l
e
-
k
e
y e
nc
r
yp
tion
[
9]
.
S
ym
m
e
t
r
i
c
e
nc
r
y
pt
i
o
n pr
o
vi
de
s
a
f
a
s
t
e
r
pr
oc
e
s
s
i
ng t
h
a
n a
s
ym
m
e
t
r
ic
-
k
e
y
e
nc
r
y
pt
i
on
,
b
ut
w
i
t
h a
dr
a
w
ba
c
k t
ha
t
t
he
s
e
n
de
r
m
us
t
s
om
e
ho
w t
r
a
ns
f
o
r
m
s
t
he
s
e
c
r
e
t
ke
y
us
e
d t
o e
nc
r
y
pt
t
he
da
t
a
t
o
t
he
ot
h
e
r
u
ni
t
(
s
)
be
f
or
e
s
t
a
r
t
us
i
n
g
t
h
a
t
ke
y
.
T
hi
s
i
s
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m
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on
[
1
5]
.
A
s
ym
m
e
tr
ic
(
d
oub
le
-
ke
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)
c
r
y
pt
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t
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ing
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T
he
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n t
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m
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im
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onl
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om
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o e
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m
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s
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t
o de
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T
hi
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o
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itio
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llow
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y of
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ly in
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c
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[
1
1]
.
2
.
2
.
2
.
K
e
y
D
i
s
t
r
i
but
i
o
n
M
o
d
e
l
A
f
t
e
r
de
c
i
di
ng
t
he
s
ui
t
a
bl
e
l
e
ngt
h o
f
t
he
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nt
e
r
m
e
di
a
t
e
e
nc
r
y
pt
i
o
n ke
y
,
t
hi
s
l
e
n
gt
h m
us
t
s
e
nt
i
n a
s
ecr
et
w
ay
t
o
b
o
t
h
n
o
de
s
t
ha
t
a
s
ki
n
g f
o
r
c
o
m
m
uni
c
a
t
i
on.
I
n
o
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de
r
t
o
d
o
s
o a
w
a
y
o
f
a
s
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m
e
t
r
i
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nc
r
y
pt
i
on
m
us
t
be
us
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d
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F
or
t
he
pu
r
pos
e
of
a
s
y
m
m
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ic
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pt
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A
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s
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e
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e
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f
or
t
he
i
m
ple
m
e
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a
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t
o
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e p
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Evaluation Warning : The document was created with Spire.PDF for Python.
IJ
A
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2
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88
14
A
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(
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on
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2
79
a)
S
t
a
ge
1:
n
o
de
X
t
r
i
e
s
t
o
ga
i
n
a
c
c
e
s
s
t
o
t
he
p
ubl
i
c
ke
y
o
f
n
o
de
Y,
t
hi
s
c
a
n
be
do
ne
o
ve
r
f
ou
r
s
t
e
ps
1)
S
t
e
p
1
(
X
re
q
u
e
s
t
s
Y’s
p
u
b
l
i
c
k
e
y
f
ro
m
C
H
):
no
de
X s
e
nds
a
r
e
q
ue
s
t
m
e
s
s
a
ge
t
o
t
he
C
H
,
r
e
qui
r
i
ng th
e
pu
bl
i
c
ke
y
o
f
n
ode
Y
t
hi
s
m
e
s
s
a
ge
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s
i
n
t
he
f
or
m
C
to
w
h
i
ch
m
ean
s
ci
p
h
er
t
o
(
C
H
)
C
to
(C
H
)=
E
KU(CH)
(E
KR(X)
(i
d
,
Y)
)
(
1)
T
h
i
s
m
es
s
ag
e co
n
t
ai
n
s
t
h
e i
d
o
f
t
h
e m
es
s
ag
e t
o
p
r
e
v
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t
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e
p
l
ay
at
t
ack
s
an
d
t
h
e
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am
e o
f
t
h
e n
o
d
e Y
.
T
h
e
m
es
s
ag
e
i
s
en
cr
y
p
t
e
d
t
w
o
t
i
m
es
f
i
r
s
t
w
i
t
h
t
h
e
p
r
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e
k
ey
o
f
n
o
d
e
X
(
t
o
as
s
u
r
es
t
h
at
i
t
co
m
e
f
r
o
m
n
o
d
e
X
s
i
nc
e
i
t
c
a
nn
ot
be
de
c
r
y
pt
e
d
by
a
ny
ke
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e
x
c
e
pt
by
X
’
s
p
ubl
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c
ke
y
w
hi
c
h i
s
a
va
i
l
a
bl
e
t
o t
he
C
H
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s
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c
ke
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s
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bl
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T
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e
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s
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t
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k
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2)
S
t
e
p
2
(C
H
d
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c
ry
p
t
X
’s
m
e
s
s
a
g
e
):
C
H
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t
h
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m
es
s
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e
f
r
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m
X
an
d
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al
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ze
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t
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h
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h
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r
d
er
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f
t
h
e m
es
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e M
f
rm
(
X)
w
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c
h m
e
s
s
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ge
f
r
om
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H
f
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r
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t
de
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r
y
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by
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t
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o
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pr
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va
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n
w
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t
h
Y
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s
p
u
b
l
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c
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e
y
.
M
f
rm
(X
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=
D
KR(
CH)
(E
KU(X)
(i
d
,
Y)
)
(i
d
,
Y
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(
2)
3)
S
t
e
p
3
(C
H
s
e
n
d
s
Y
’s
p
u
b
l
i
c
ke
y
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X)
:
C
H
e
n
cr
y
p
t
s
a
m
es
s
ag
e
i
n
t
h
e
f
o
r
m
C
to
(
X
)
=
(E
KU(X)
(E
KR(CH)
(i
d
,
KU
(Y
))
)
(
3)
D
o
u
bl
e
e
nc
r
y
p
t
i
on
i
n
t
hi
s
s
t
e
p
s
e
r
ve
s
a
s
e
nc
r
y
pt
i
on
o
f
t
he
m
e
s
s
a
ge
a
n
d
a
ut
he
nt
i
c
a
t
i
o
n
of
(
C
H
)
.
4)
S
t
e
p
4
(X
re
t
ri
e
v
e
Y’s
p
u
b
l
i
c
k
ey
f
r
o
m
C
H
’
s
m
es
s
ag
e)
:
X
d
e
c
r
y
p
t
s
t
h
e
m
e
s
s
a
g
e
a
s
t
h
e
f
o
l
l
o
w
i
n
g
e
q
u
a
t
i
o
n
:
M
f
rm
(C
H
)
=
D
K
R(CH)
(E
KU(X)
(i
d
,
KU
(Y
))
)
i
d
,
K
U
(Y
)
(
4)
b)
S
t
a
ge
2:
n
o
de
X
a
s
ks
n
ode
Y
f
o
r
c
om
m
uni
c
a
t
i
on
1)
S
t
e
p 1
(
X
s
e
n
ds
a
c
om
m
uni
c
a
t
i
on r
e
q
ue
s
t
t
o Y)
:
X
se
nd
s
a
n
on
-
e
nc
r
y
pt
e
d m
e
s
s
a
ge
t
o Y
i
nc
l
u
di
n
g
X
’
s
pu
bl
i
c
ke
y
a
n
d
a
n
i
d
t
o
de
c
l
a
r
e
t
he
t
i
m
i
ng
of
t
he
m
e
s
s
a
ge
M
to
(Y
)
=
(i
d
,
KU
(X
))
(
5)
2)
S
te
p
2
(
Y s
e
nds
a
qu
e
r
y to
C
H
)
:
n
o
de
X
s
e
nds
a
r
e
q
ue
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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SN
:
2
252
-
88
14
IJ
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IJ
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88
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.
1.
P
r
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s
s
i
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g t
im
e
:
t
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t
im
e
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e
qui
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d t
o pr
oc
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a
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t
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b
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h
m
.
2.
G
a
i
n
e
d
s
e
c
u
r
i
t
y
l
e
v
e
l
:
t
h
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l
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v
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l
o
f
s
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c
u
r
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t
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p
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:
a.
F
al
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j
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i
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n
:
n
u
m
b
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n
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-
at
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m
o
d
el
r
e
j
ect
ed
o
r
el
i
m
i
n
at
ed
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
SN
:
2
252
-
88
14
IJ
A
A
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V
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.
7
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3
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be
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18
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–
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85
2
82
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d.
3
.
1
.
I
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F
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M
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.
1
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1
.
P
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Ti
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3
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ni
t
s
.
Evaluation Warning : The document was created with Spire.PDF for Python.