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2
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:
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d
h
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,
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ar
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m
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t
o
f
C
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tr
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d
S
y
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te
m
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g
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Un
i
v
er
s
it
y
o
f
T
ec
h
n
o
lo
g
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,
Sin
aa
Stre
et,
B
ag
h
d
ad
-
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r
aq
.
E
m
ail: 6
0
1
6
3
@
u
o
tech
n
o
lo
g
y
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ed
u
.
iq
1.
I
NT
RO
D
UCT
I
O
N
On
e
o
f
th
e
m
o
s
t
cr
y
p
to
g
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ap
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e
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s
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m
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k
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k
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ap
p
lied
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id
el
y
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n
in
f
o
r
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atio
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s
ec
u
r
i
t
y
.
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n
ad
d
it
io
n
to
its
d
ata
co
n
f
id
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tial
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y
p
u
r
p
o
s
e,
it
h
as
b
ee
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u
s
ed
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a
m
ai
n
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e
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t
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n
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n
u
m
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e
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er
ato
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s
,
p
r
o
to
co
ls
,
s
tr
ea
m
cip
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er
s
,
m
es
s
ag
e
a
u
t
h
en
ticatio
n
a
n
d
h
ash
f
u
n
ctio
n
s
.
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t
is
o
n
e
a
m
o
n
g
v
ar
io
u
s
s
y
m
m
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ic
-
k
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lo
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er
s
u
s
ed
to
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v
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e
s
ec
u
r
it
y
e
f
f
icien
t
l
y
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n
d
w
i
th
f
le
x
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ilit
y
.
T
h
er
e
ar
e
s
o
m
e
t
y
p
es
s
u
c
h
as
B
lo
w
f
is
h
,
T
w
o
f
i
s
h
,
R
C
6
,
R
ij
n
d
ae
l,
Ma
r
s
,
Ser
p
en
t a
n
d
D
E
S,
w
h
ic
h
h
a
v
e
b
ee
n
r
ec
eiv
ed
w
it
h
t
h
e
g
r
ea
te
s
t p
r
ac
tical
in
te
r
est [
1
-
4
]
.
I
m
p
l
y
i
n
g
2
5
6
d
is
tin
c
t
m
ess
a
g
e
b
lo
ck
s
t
h
r
o
u
g
h
c
h
o
o
s
i
n
g
a
s
m
all
v
al
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e
o
f
m
(
i.e
.
m
=8
)
r
esu
lt
s
i
n
a
lo
w
s
ec
u
r
it
y
s
y
s
te
m
,
s
i
n
ce
a
ttack
er
s
ca
n
tr
y
to
ex
tr
ac
t
th
e
p
lain
tex
t
f
r
o
m
t
h
e
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te
x
t
t
h
r
o
u
g
h
f
r
eq
u
e
n
c
y
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al
y
s
is
if
t
h
e
y
h
a
v
e
a
b
asic
k
n
o
w
led
g
e
o
f
t
h
e
s
tati
s
tical
p
atter
n
s
i
n
t
h
e
p
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te
x
t.
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r
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,
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k
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s
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n
b
u
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a
co
d
eb
o
o
k
f
o
r
th
e
p
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t
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ip
h
er
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t
p
air
s
th
at
co
r
r
esp
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d
s
to
a
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v
e
g
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es
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ed
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e
p
lain
te
x
t t
h
at
r
elate
s
to
t
h
e
ir
cip
h
er
tex
t [
5
,
6
]
.
Fo
r
tu
n
ate
l
y
,
t
h
e
ab
o
v
e
p
r
o
b
lem
s
h
a
v
e
b
ee
n
o
v
er
co
m
e
t
h
r
o
u
g
h
in
cr
ea
s
in
g
t
h
e
b
lo
ck
len
g
t
h
th
at
lead
s
to
in
cr
ea
s
i
n
g
t
h
e
n
u
m
b
er
o
f
p
o
s
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ib
le
m
es
s
ag
e
s
.
A
s
a
r
es
u
lt,
t
h
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attac
k
er
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u
n
ab
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v
ail
k
n
o
w
led
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e
p
lai
n
tex
t
p
atter
n
s
t
h
at
ar
e
s
h
o
r
ter
th
a
n
t
h
e
b
lo
ck
le
n
g
th
.
T
h
er
ef
o
r
e,
it
is
n
o
t
u
s
e
f
u
l
f
o
r
th
e
at
tack
er
to
f
ab
r
icat
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a
co
d
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o
o
k
.
T
h
e
m
es
s
ag
e
b
lo
ck
len
g
t
h
(
m
)
is
n
o
r
m
a
ll
y
c
h
o
s
en
to
b
e
at
le
ast
6
4
b
its
.
I
t
i
s
v
er
y
i
m
p
o
r
ta
n
t
f
o
r
i
t
to
b
e
i
m
p
r
ac
tical
f
o
r
th
e
a
tt
ac
k
er
w
it
h
a
k
n
o
w
n
p
lain
tex
t
(
P, C
)
,
to
b
e
ab
le
to
r
ec
o
v
er
th
e
k
e
y
t
h
r
o
u
g
h
e
x
h
au
s
ti
v
e
k
e
y
-
s
ea
r
ch
(
i.e
.
b
r
u
te
-
f
o
r
ce
)
.
T
h
er
ef
o
r
e,
it
is
v
ital
to
m
a
k
e
t
h
e
d
eter
m
i
n
atio
n
o
f
th
e
k
e
y
d
if
f
icu
lt
w
h
e
n
tr
y
in
g
v
alu
e
s
o
f
k
⸦
K
u
n
til
t
h
e
k
e
y
is
f
o
u
n
d
s
o
th
at
C
=
E
(
P
;
k
)
.
B
asicall
y
,
in
o
r
d
er
to
m
a
k
e
t
h
e
b
r
u
te
-
f
o
r
ce
attac
k
in
e
f
f
ec
t
iv
e
a
n
d
t
h
e
k
e
y
m
o
r
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s
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u
r
e,
t
h
e
k
e
y
s
h
o
u
ld
b
e
lo
n
g
er
[
7
]
.
No
w
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a
y
s
,
d
esig
n
er
s
ar
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en
co
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r
ag
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to
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d
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r
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p
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m
e
n
t
t
h
e
h
ar
d
w
ar
e
cr
y
p
to
g
r
ap
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ic
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m
.
T
h
u
s
,
it
m
atc
h
es
th
e
es
s
en
tia
l
o
p
er
atio
n
f
o
r
p
r
iv
ate
-
k
e
y
cr
y
p
to
g
r
ap
h
ic
al
g
o
r
ith
m
s
(
i.e
.
B
o
o
lean
f
u
n
cti
o
n
s
,
lo
o
k
-
u
p
tab
le,
an
d
b
it
-
s
u
b
s
tit
u
tio
n
s
)
.
On
o
n
e
h
a
n
d
,
m
o
r
e
t
h
an
o
n
e
o
p
er
atio
n
ca
n
b
e
ex
ec
u
ted
co
n
c
u
r
r
en
tl
y
at
cr
y
p
to
g
r
ap
h
ic
-
r
o
u
n
d
lev
el.
O
n
t
h
e
o
th
er
h
a
n
d
,
s
y
n
c
h
r
o
n
o
u
s
p
r
o
ce
s
s
in
g
o
f
m
u
ltip
le
b
lo
ck
s
o
f
d
ata
p
er
f
o
r
m
ed
in
b
lo
ck
-
cip
h
er
lev
el
as
w
el
l [
8
-
1
0
]
.
T
h
is
p
ap
er
is
ar
r
an
g
ed
as
f
o
ll
o
w
s
:
Sectio
n
2
p
r
esen
ts
s
o
m
e
o
f
t
h
e
p
r
ev
io
u
s
w
o
r
k
s
.
Secti
o
n
3
g
i
v
e
s
a
co
n
cise
i
n
tr
o
d
u
ctio
n
o
f
R
C
6
alg
o
r
ith
m
.
Sectio
n
4
b
r
ief
l
y
d
escr
ib
es
t
h
e
p
r
o
p
o
s
ed
R
C
6
-
C
ascad
ed
s
y
s
te
m
.
Sectio
n
5
d
escr
ib
es
t
h
e
ar
ch
it
ec
tu
r
e
o
f
t
h
e
p
r
o
p
o
s
ed
A
lter
a
FP
GA
d
esi
g
n
.
Sectio
n
6
s
h
o
w
s
t
h
e
ex
p
er
i
m
en
tal
an
d
i
m
p
le
m
en
tatio
n
r
es
u
lt
s
an
d
f
in
all
y
,
s
ec
tio
n
7
d
r
a
w
s
t
h
e
c
o
n
clu
s
io
n
o
b
s
er
v
ed
f
r
o
m
th
e
r
esu
lt
s
.
2.
RE
L
AT
E
D
WO
RK
S
Var
io
u
s
s
y
m
m
etr
ic
-
k
e
y
b
lo
c
k
cip
h
er
s
h
av
e
b
ee
n
av
ai
lab
le
o
f
f
er
in
g
v
ar
io
u
s
le
v
els
o
f
s
ec
u
r
i
t
y
,
f
le
x
ib
ilit
y
,
an
d
e
f
f
ec
tiv
e
n
es
s
.
I
n
2
0
0
8
,
Kr
is
h
n
a
m
u
r
t
h
y
e
t
al
[
1
1
]
p
r
o
p
o
s
ed
a
s
ec
r
et
-
k
ey
b
lo
ck
cip
h
er
t
h
at
u
tili
ze
s
p
r
ec
io
u
s
f
ea
t
u
r
es
o
f
C
A
ST
-
1
2
8
an
d
B
lo
w
f
is
h
alg
o
r
ith
m
s
.
Ash
w
aq
[
1
2
]
in
2
0
0
9
in
tr
o
d
u
ce
d
a
b
l
o
ck
cip
h
er
w
h
ic
h
m
a
k
es
u
s
e
o
f
f
o
u
r
3
2
-
b
it
p
lai
n
tex
t
d
ata
as
in
p
u
t
a
n
d
g
e
n
er
ates
f
o
u
r
3
2
-
b
it
ci
p
h
er
tex
t
d
ata
w
o
r
d
s
.
T
h
e
cip
h
er
is
w
o
r
d
-
o
r
ien
ted
i
n
t
h
at
all
th
e
i
n
ter
io
r
o
p
er
atio
n
s
ar
e
ca
r
r
ied
o
u
t
o
n
3
2
-
b
it
wo
r
d
s
.
T
h
is
al
g
o
r
ith
m
is
a
ty
p
e
-
3
Feis
tel
n
e
t
w
o
r
k
r
ep
ea
tin
g
t
h
e
s
i
m
p
le
f
u
n
ctio
n
1
6
tim
es.
I
n
2
0
1
0
,
A
s
h
w
aq
et
al
[
1
3
]
p
r
o
p
o
s
ed
a
s
y
m
m
etr
ic
k
e
y
b
lo
c
k
cip
h
er
k
n
o
w
n
a
s
'
5
1
2
b
its
R
C
6
'
w
h
ich
i
s
an
e
v
o
l
u
tio
n
ar
y
en
h
a
n
c
e
m
en
t
o
f
t
h
e
R
C
6
b
lo
ck
cip
h
er
d
esig
n
ed
to
g
et
p
er
f
o
r
m
a
n
ce
e
n
h
a
n
ce
m
en
t
an
d
in
cr
ea
s
e
s
ec
u
r
it
y
.
T
h
e
in
n
er
lo
o
p
d
esig
n
i
s
ad
ap
ted
f
r
o
m
128
-
b
it
R
C
6
r
o
u
n
d
.
I
n
ad
d
itio
n
,
An
a
n
d
et
al
[
1
4
]
in
2
0
1
2
p
r
o
p
o
s
ed
a
cip
h
er
o
f
5
1
2
b
it
f
o
r
s
ec
u
r
e
co
m
m
u
n
icatio
n
.
I
t
i
s
i
m
p
r
o
v
ed
b
ased
o
n
a
d
esi
g
n
p
r
i
n
cip
le
k
n
o
w
n
a
s
s
u
b
s
t
itu
tio
n
p
er
m
u
tatio
n
n
et
w
o
r
k
.
W
h
ile
i
n
Kr
i
s
h
n
a
m
u
r
th
y
[
1
1
]
,
th
e
VHD
L
i
m
p
le
m
e
n
tatio
n
is
u
ti
lized
an
d
ca
r
e
f
u
l
l
y
tes
ted
to
m
a
n
i
f
est
th
e
p
er
ce
n
tag
e
i
m
p
r
o
v
e
m
e
n
t
in
th
e
p
er
f
o
r
m
a
n
ce
o
f
th
e
m
o
d
if
ied
B
lo
w
-
C
A
ST
-
Fi
s
h
b
lo
ck
cip
h
er
.
Faez
et
al
[
1
5
]
im
p
le
m
e
n
ted
a
tr
ad
itio
n
al
R
C
6
b
lo
ck
cip
h
e
r
th
at
i
n
clu
d
es
th
e
e
n
cr
y
p
tio
n
an
d
d
ec
r
y
p
tio
n
o
n
FP
GA
Ver
ti
x
I
I
d
ev
ice
w
it
h
h
ig
h
l
y
s
o
lid
ar
ch
itect
u
r
e
t
h
r
o
u
g
h
r
e
u
tili
zi
n
g
t
h
e
s
a
m
e
u
n
its
f
o
r
th
e
co
m
p
ar
ab
le
o
p
er
atio
n
in
b
o
th
alg
o
r
ith
m
s
.
Mo
r
eo
v
er
,
Ma
r
d
ian
a
et
al
[
1
6
]
ad
d
r
ess
ef
f
ic
ien
tl
y
th
e
m
o
d
i
f
icatio
n
f
o
r
i
m
p
le
m
en
t
in
g
th
e
R
C
6
b
lo
ck
cip
h
er
alg
o
r
ith
m
f
o
r
a
d
ig
ital
i
m
ag
e
a
n
d
d
escr
ib
e
th
e
d
esi
g
n
a
n
d
p
er
f
o
r
m
an
ce
o
f
t
h
e
a
lg
o
r
ith
m
f
o
r
co
lo
r
i
m
a
g
es
a
n
d
g
r
a
y
s
ca
le
as
w
ell
an
d
it
r
ed
u
ce
th
e
ca
p
ac
it
y
(
i.
e.
s
ize)
o
f
v
ar
iab
les
to
i
m
p
r
o
v
e
th
e
al
g
o
r
ith
m
i
n
ter
m
s
o
f
m
e
m
o
r
y
co
n
s
u
m
ed
a
n
d
ti
m
e
r
eq
u
ir
ed
.
A
ct
u
all
y
,
ad
v
an
ce
e
n
cr
y
p
tio
n
s
tan
d
ar
d
(
A
E
S)
an
d
Data
E
n
c
r
y
p
tio
n
Sta
n
d
ar
d
(
DE
S)
ar
e
w
id
el
y
u
s
e
d
in
b
lo
ck
cip
h
er
s
.
A
E
S
is
a
m
o
d
if
ied
v
er
s
io
n
o
f
R
ij
n
d
ae
l a
lg
o
r
ith
m
,
w
h
ic
h
i
s
f
ast
i
n
s
o
f
t
w
ar
e
an
d
f
le
x
ib
le
to
b
e
i
m
p
le
m
en
ted
i
n
h
ar
d
w
ar
e
b
u
t
s
u
f
f
er
s
f
r
o
m
b
r
u
te
f
o
r
ce
attac
k
[
1
7
-
1
9
]
.
Me
an
w
h
ile,
DE
S
is
cu
r
r
en
tl
y
co
n
s
id
er
ed
to
b
e
in
s
ec
u
r
e
f
o
r
m
an
y
ap
p
licatio
n
s
d
u
e
to
its
s
m
all
k
e
y
s
ize.
Mo
r
eo
v
er
,
a
cc
o
r
d
in
g
to
to
d
ay
’
s
co
m
p
u
ti
n
g
p
o
w
er
,
DE
S
is
n
o
t
s
u
f
f
icie
n
t
an
d
m
a
y
b
e
e
x
p
o
s
ed
to
h
u
g
e
f
o
r
ce
attac
k
s
[
2
0
]
.
T
h
er
ef
o
r
e,
it
is
n
o
lo
n
g
er
s
u
itab
le
f
o
r
s
ec
u
r
it
y
.
F
o
r
th
at
r
ea
s
o
n
,
C
h
a
n
c
h
al
et
al,
[
2
1
]
p
r
esen
t
a
b
lo
w
f
is
h
cr
y
p
t
o
g
r
ap
h
y
alg
o
r
it
h
m
to
r
ep
lace
DE
S
alg
o
r
ith
m
,
w
h
ich
is
a
s
ec
u
r
e
an
d
f
ast
b
lo
ck
cip
h
er
alg
o
r
ith
m
,
a
n
d
o
f
f
er
s
a
g
o
o
d
p
er
f
o
r
m
a
n
ce
.
Ho
w
e
v
er
,
it su
f
f
er
s
f
r
o
m
w
ea
k
k
e
y
s
p
r
o
b
lem
.
No
w
ad
a
y
s
,
R
C
6
is
a
p
r
o
m
is
in
g
i
n
v
e
n
ted
b
lo
ck
cip
h
er
alg
o
r
it
h
m
to
r
ep
lace
th
e
p
r
ev
io
u
s
cip
h
er
alg
o
r
ith
m
s
d
u
e
to
t
h
e
ab
o
v
e
-
m
e
n
tio
n
ed
w
ea
k
n
e
s
s
.
R
C
6
is
p
r
esen
ted
a
s
a
p
o
w
er
f
u
l b
lo
ck
cip
h
er
to
b
e
a
n
e
w
co
n
s
id
er
atio
n
o
f
R
C
5
.
T
h
er
e
ex
is
ts
a
co
n
s
id
er
ab
le
b
o
d
y
o
f
w
o
r
k
d
o
n
e
i
n
th
e
f
ield
o
f
cr
y
p
to
g
r
ap
h
y
o
n
e
m
b
ed
d
ed
s
y
s
te
m
s
s
u
c
h
a
s
d
ig
ital
s
i
g
n
al
p
r
o
ce
s
s
o
r
s
(
DSP
)
,
m
icr
o
co
n
tr
o
ller
(
µc
)
,
ap
p
licatio
n
s
p
ec
i
f
ic
in
te
g
r
ate
d
cir
cu
its
(
A
SIC),
an
d
f
ield
p
r
o
g
r
a
m
m
ab
le
g
ate
ar
r
ay
(
FP
G
A
)
.
Fro
m
p
er
f
o
r
m
an
ce
p
o
in
t
o
f
v
ie
w
,
t
h
er
e
is
a
tr
ad
e
-
o
f
f
b
et
w
ee
n
th
r
o
u
g
h
p
u
t
an
d
ar
ea
u
tili
za
tio
n
.
Si
n
ce
t
h
e
iter
ati
v
e
ar
ch
itec
tu
r
e
is
a
r
eso
u
r
ce
ef
f
icie
n
t
a
p
p
r
o
ac
h
co
n
s
is
ti
n
g
o
f
s
i
m
p
l
y
o
n
e
r
o
u
n
d
.
T
h
er
ef
o
r
e,
th
e
p
r
o
p
o
s
ed
h
ar
d
w
ar
e
i
m
p
le
m
en
ta
tio
n
u
s
i
n
g
F
P
G
A
ac
h
iev
es
iter
ati
v
e
ar
ch
itect
u
r
e
.
3.
RC6
E
NCRY
P
T
I
O
N
A
L
G
O
RIT
H
M
R
C
6
i
s
o
n
e
o
f
th
e
f
in
ali
s
ts
b
lo
ck
cip
h
er
alg
o
r
it
h
m
i
n
t
h
e
ad
v
an
ce
d
e
n
cr
y
p
tio
n
s
ta
n
d
ar
d
(
A
E
S)
co
m
p
eti
tio
n
.
T
h
e
R
C
6
alg
o
r
it
h
m
e
x
te
n
d
s
f
r
o
m
i
ts
p
r
ed
ec
ess
o
r
R
C
5
.
Si
n
ce
R
C
6
is
t
h
e
ev
o
lu
tio
n
o
f
R
C
5
,
ev
o
lu
tio
n
ar
y
d
i
f
f
er
en
ce
s
w
ill
b
e
o
b
s
er
v
ed
ac
co
r
d
in
g
l
y
.
R
C
6
h
as a
1
2
8
-
b
it b
lo
ck
s
ize
an
d
s
u
p
p
o
r
ts
k
e
y
s
izes o
f
1
2
8
,
1
9
2
,
an
d
2
5
6
b
its
u
p
to
2
0
4
0
b
its
.
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I
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ts
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ith
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d
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s
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ar
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a
k
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ased
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n
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asic
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atio
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C
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h
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g
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T
H
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RO
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C
6
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it
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it
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ascad
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
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C
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m
p
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I
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N:
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r
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le
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it
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m
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m
o
d
i
f
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s
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h
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u
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s
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cr
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ec
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y
p
tio
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.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
n
t J
E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
10
,
No
.
6
,
Dec
em
b
er
2
0
2
0
:
6
3
7
0
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6
3
7
9
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5.
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6
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o
l sig
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ST
AR
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h
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g
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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:
2
0
8
8
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8708
Desig
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6
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.
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2.
1
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1
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3.
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2
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2
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2
2
2
2
2
2
2
4.
3
3
3
3
3
3
3
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3
3
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3
3
3
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3
3
3
3
3
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3
3
3
3
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3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
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3
3
3
3
3
3
3
3
3
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3
3
3
3
3
3
3
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3
3
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3
3
3
3
3
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3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
5.
4
4
4
4
4
4
4
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4
4
4
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4
4
4
4
4
4
4
4
6.
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
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7.
6
6
6
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6
6
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6
6
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8.
7
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[3
]
N
.
A
.
N
.
Ha
sh
im
,
e
t
a
l.
,
“
M
e
m
ri
sto
r
b
a
se
d
r
in
g
o
sc
il
lat
o
rs
tr
u
e
ra
n
d
o
m
n
u
m
b
e
r
g
e
n
e
ra
to
r
w
it
h
d
if
f
e
r
e
n
t
w
in
d
o
w
f
u
n
c
ti
o
n
s
f
o
r
a
p
p
li
c
a
ti
o
n
s
i
n
c
ry
p
to
g
ra
p
h
y
,
”
In
d
o
n
e
sia
n
J
o
u
r
n
a
l
o
f
El
e
c
trica
l
E
n
g
i
n
e
e
rin
g
a
n
d
C
o
mp
u
ter
S
c
ie
n
c
e
(
IJ
EE
CS
)
,
v
o
l.
1
4
,
n
o
.
1
,
p
p
.
2
0
1
-
209
,
2
0
1
9
.
[4
]
M
.
A
lj
o
h
a
n
i,
e
t
a
l.
,
“
P
e
rf
o
rm
a
n
c
e
A
n
a
l
y
sis
o
f
Cr
y
p
to
g
ra
p
h
ic
P
se
u
d
o
ra
n
d
o
m
Nu
m
b
e
r
G
e
n
e
ra
to
rs
,
”
IEE
E
Acc
e
ss
,
v
o
l.
7
,
p
p
.
3
9
7
9
4
-
3
9
8
0
5
,
2
0
1
9
.
[5
]
A
.
A
b
o
u
c
h
o
u
a
r,
e
t
a
l.
,
“
Ne
w
c
o
n
c
e
p
t
f
o
r
c
ry
p
to
g
ra
p
h
ic
c
o
n
str
u
c
ti
o
n
d
e
sig
n
b
a
se
d
o
n
n
o
n
it
e
ra
ti
v
e
b
e
h
a
v
io
u
r
,
”
IAE
S
In
ter
n
a
t
io
n
a
l
J
o
u
rn
a
l
o
f
Art
if
icia
l
In
telli
g
e
n
c
e
(
IJ
-
AI)
,
v
o
l.
9
,
n
o
.
2
,
p
p
.
2
2
9
-
2
3
5
,
2
0
2
0
.
[6
]
F
.
No
o
rb
a
sh
a
,
e
t
a
l.
,
“
F
P
GA
D
e
sig
n
a
n
d
I
m
p
le
m
e
n
tatio
n
o
f
M
o
d
if
ied
A
ES
Ba
se
d
En
c
r
y
p
ti
o
n
a
n
d
De
c
r
y
p
ti
o
n
A
l
g
o
ri
th
m
,
”
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
In
n
o
v
a
ti
v
e
T
e
c
h
n
o
lo
g
y
a
n
d
Exp
lo
ri
n
g
En
g
in
e
e
rin
g
(
IJ
IT
EE
)
,
v
o
l.
8
,
n
o
.
6
S
,
p
p
.
1
3
2
-
1
3
6
,
2
0
1
9
.
[7
]
R
.
Op
p
l
ig
e
r
,
“
Co
n
tem
p
o
ra
ry
Cr
y
p
to
g
ra
p
h
y
,
”
Artec
h
Ho
u
se
,
INC,
2
0
0
5
.
[8
]
S
.
A
b
e
d
,
e
t
a
l.
,
“
F
P
GA
M
o
d
e
li
n
g
a
n
d
Op
ti
m
iza
ti
o
n
o
f
a
S
IM
ON
L
ig
h
t
Weig
h
t
Blo
c
k
Cip
h
e
r,
”
S
e
n
so
rs
,
v
o
l.
1
9
,
n
o
.
4
,
p
p
.
1
-
28
,
2
0
1
9
.
[9
]
S
.
De
ss
a
i
a
n
d
S
a
n
d
e
e
p
G
.
,
“
E
m
b
e
d
d
e
d
Ha
rd
w
a
re
Circu
it
a
n
d
S
o
f
twa
re
De
v
e
lo
p
m
e
n
t
o
f
USB
b
a
se
d
Ha
rd
w
a
re
A
c
c
e
lera
to
r
,
”
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
Rec
o
n
fi
g
u
ra
b
le a
n
d
Emb
e
d
d
e
d
S
y
ste
ms
,
v
o
l.
7
,
n
o
.
1
,
p
p
.
2
1
-
33
,
2
0
1
8
.
[1
0
]
S
h
a
i
l
a
j
a
A
.
a
n
d
Kr
i
s
h
n
a
m
u
r
t
h
y
G
.
N
.
,
“
F
P
G
A
Im
p
lem
e
n
t
a
t
i
o
n
A
n
d
A
n
a
ly
si
s
Of
R
C
7
A
lg
o
r
i
t
h
m
Us
i
n
g
Re
v
e
r
s
i
b
l
e
L
o
g
ic
G
a
te
s
,
”
I
n
t
e
r
n
a
t
i
o
n
a
l
J
o
u
r
n
a
l
o
f
E
n
g
i
n
e
e
r
i
n
g
a
n
d
A
d
v
a
n
c
e
d
T
e
c
h
n
o
l
o
g
y
,
v
o
l
. 8
,
n
o
.
6
,
p
p
.
7
6
9
-
7
7
6
,
2
0
1
9
.
[1
1
]
Krish
n
a
m
u
rth
y
G
.
N
.
,
e
t
a
l.
,
“
Bl
o
w
-
C
A
S
T
-
F
ish
:
A
Ne
w
6
4
-
b
it
C
lo
c
k
Cip
h
e
r
,
”
IJ
C
S
NS
I
n
ter
n
a
ti
o
n
a
l
J
o
u
r
n
a
l
o
f
Co
mp
u
ter
S
c
ien
c
e
a
n
d
Ne
tw
o
rk
S
e
c
u
rity
,
v
o
l
.
8
,
n
o.
4
,
p
p
.
2
8
2
-
2
9
0
,
2
0
0
8
.
[1
2
]
A
.
T
.
Ha
sh
i
m,
“
Ty
p
e
-
3
F
e
istel Ne
tw
o
rk
o
f
T
h
e
1
2
8
-
b
it
s Blo
c
k
S
ize
Im
p
ro
v
e
d
Bl
o
wf
ish
Cr
y
p
to
g
ra
p
h
i
c
En
c
ry
p
ti
o
n
,
”
En
g
i
n
e
e
rin
g
a
n
d
T
e
c
h
n
o
lo
g
y
J
o
u
rn
a
l
,
v
o
l.
2
7
,
n
o
.
2
,
p
p
.
2
3
5
-
2
4
6
,
2
0
0
9
.
[1
3
]
A
.
T
.
Ha
sh
im
,
e
t
a
l.
,
“
A
P
r
o
p
o
sa
l
5
1
2
-
b
it
s RC
6
E
n
c
ry
p
ti
o
n
A
lg
o
rit
h
m
,
”
IJ
CCCE
,
v
o
l.
1
0
,
n
o.
1
,
p
p
.
11
-
2
5
,
2
0
1
0
.
[1
4
]
M
.
A
.
Ku
m
a
r
a
n
d
S.
Ka
rth
ik
e
y
a
n
,
“
In
v
e
stig
a
ti
n
g
th
e
E
ff
icie
n
c
y
o
f
Blo
wf
ish
a
n
d
Re
ji
n
d
a
e
l
(A
ES
)
A
lg
o
rit
h
m
s
,
”
I
n
ter
n
a
t
io
n
a
l
J
o
u
rn
a
l
o
f
C
o
mp
u
ter
Ne
two
rk
a
n
d
In
fo
rm
a
t
io
n
S
e
c
u
ri
ty (
IJ
CNIS
)
,
v
o
l.
2
,
p
p
.
22
-
28
,
2
0
1
2
.
[1
5
]
F
.
F
.
S
h
a
re
e
f
,
e
t
a
l.
,
“
Co
m
p
a
c
t
Ha
rd
w
a
re
I
m
p
le
m
e
n
tatio
n
o
f
F
P
GA
Ba
se
d
RC6
Blo
c
k
Ci
p
h
e
r
,
”
J
o
u
rn
a
l
o
f
En
g
i
n
e
e
rin
g
a
n
d
A
p
p
li
e
d
S
c
ien
c
e
s
,
v
o
l.
3
,
n
o
.
7
,
p
p
.
5
8
9
-
6
0
1
,
2
0
0
8
.
[1
6
]
M
a
rd
ian
a
,
e
t
a
l.
,
“
M
o
d
if
ica
ti
o
n
o
f
RC6
Blo
c
k
Cip
h
e
r
A
lg
o
rit
h
m
o
n
Dig
it
a
l
Im
a
g
e
,
”
J
o
u
rn
a
l
o
f
Ph
y
si
c
s:
Co
n
fer
e
n
c
e
S
e
rie
s,
In
ter
n
a
ti
o
n
a
l
Co
n
fer
e
n
c
e
o
n
I
n
fo
rm
a
ti
o
n
a
n
d
Co
mm
u
n
ica
ti
o
n
T
e
c
h
n
o
lo
g
y
,
v
o
l.
9
3
0
,
p
p
.
1
-
6
,
2
0
1
7
.
[1
7
]
Z
.
H
e
rc
ig
o
n
ja
,
e
t
a
l
.
,
“
Co
m
p
a
ra
ti
v
e
A
n
a
l
y
s
is
o
f
Cr
y
p
to
g
ra
p
h
ic
A
l
g
o
rit
h
m
s
,
”
In
ter
n
a
ti
o
n
a
l
J
o
u
r
n
a
l
o
f
Dig
it
a
l
T
e
c
h
n
o
l
o
g
y
a
n
d
Eco
n
o
my
,
v
o
l.
1
,
n
o
.
2
,
p
p
.
1
2
7
-
1
3
4
,
2
0
1
6
.
[1
8
]
E
.
M
.
De
L
.
Re
y
e
s,
e
t
a
l.
,
“
F
il
e
e
n
c
r
y
p
ti
o
n
b
a
se
d
o
n
re
d
u
c
e
d
-
ro
u
n
d
A
ES
w
it
h
re
v
ise
d
ro
u
n
d
k
e
y
s
a
n
d
k
e
y
sc
h
e
d
u
le
,
”
In
d
o
n
e
sia
n
J
o
u
r
n
a
l
o
f
El
e
c
trica
l
En
g
in
e
e
rin
g
a
n
d
Co
m
p
u
ter
S
c
ien
c
e
,
v
o
l.
1
6
,
n
o
.
2
,
p
p
.
8
9
7
-
9
0
5
,
2
0
1
9
.
[1
9
]
S
.
U.
Jo
n
w
a
l
a
n
d
P
.
P
.
S
h
in
g
a
re
,
“
A
d
v
a
n
c
e
d
En
c
ry
p
ti
o
n
S
tan
d
a
rd
(A
ES
)
i
m
p
l
e
m
e
n
tatio
n
o
n
F
P
G
A
w
it
h
h
a
rd
w
a
re
in
l
o
o
p
,
”
In
ter
n
a
ti
o
n
a
l
C
o
n
fer
e
n
c
e
o
n
T
re
n
d
s i
n
El
e
c
tro
n
ics
a
n
d
I
n
fo
rm
a
ti
c
s
(
IC
O
EI
2
0
1
7
)
,
2
0
1
7
.
[2
0
]
K.
Ka
m
a
la
m
,
“
A
S
u
rv
e
y
o
n
V
a
ri
o
u
s A
lg
o
rit
h
m
ic M
e
th
o
d
s
f
o
r
En
c
ry
p
ti
o
n
a
n
d
De
c
r
y
p
ti
o
n
,
”
In
ter
n
a
t
io
n
a
l
Ad
v
a
n
c
e
d
Res
e
a
rc
h
J
o
u
rn
a
l
i
n
S
c
ie
n
c
e
,
En
g
in
e
e
rin
g
a
n
d
T
e
c
h
n
o
l
o
g
y
,
v
o
l.
4
,
n
o
.
5
,
p
p
.
83
-
89
,
2
0
1
7
.
[2
1
]
C
.
D.
P
a
n
d
e
a
n
d
S. S. Mu
ng
on
a
,
“
Hig
h
S
p
e
e
d
Da
ta Cr
y
p
to
g
ra
p
h
y
T
e
c
h
n
iq
u
e
o
f
Blo
wf
ish
A
l
g
o
rit
h
m
u
sin
g
V
HD
L
,
”
In
ter
n
a
t
io
n
a
l
J
o
u
rn
a
l
o
n
Rec
e
n
t
a
n
d
I
n
n
o
v
a
ti
o
n
T
re
n
d
s
in
C
o
mp
u
ti
n
g
a
n
d
C
o
mm
u
n
i
c
a
ti
o
n
,
v
o
l.
4
,
n
o
.
12
,
pp.
1
1
3
-
116
,
2
0
1
6
.
[2
2
]
R.
L
.
Ri
v
e
st,
e
t
a
l.
,
“
T
h
e
RC6
T
M
Blo
c
k
Cip
h
e
r,
”
Fi
rs
t
Ad
v
a
n
c
e
d
En
c
ry
p
ti
o
n
S
ta
n
d
a
rd
(
AE
S
)
Co
n
fer
e
n
c
e
,
V
e
n
t
u
ra
,
CA
,
1
9
9
8
.
[2
3
]
R
.
S
o
n
i
a
n
d
S
.
S
in
g
h
,
“
F
P
G
A
I
m
p
le
m
e
n
tatio
n
o
f
Op
ti
m
ize
d
th
e
6
4
-
BIT
RC5
&
RC6
Cr
y
p
to
g
ra
p
h
y
En
c
r
y
p
ti
o
n
Al
g
o
rit
h
m
,
”
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
Rec
e
n
t
T
e
c
h
n
o
lo
g
y
a
n
d
En
g
in
e
e
rin
g
(
IJ
RT
E)
,
vo
l.
4
,
no
.
2
,
p
p
.
6
8
-
7
1
,
2
0
1
5
.
[2
4
]
R.
A
n
d
e
rso
n
,
e
t
a
l.
,
“
S
e
rp
e
n
t:
A
P
r
o
p
o
sa
l
f
o
r
th
e
A
d
v
a
n
c
e
d
En
c
ry
p
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