<s>
In	O
cryptography	O
,	O
MULTI-S01	B-Algorithm
(	O
pronounced	O
multi-ess-zero-one	O
)	O
,	O
is	O
an	O
encryption	O
algorithm	O
based	O
on	O
a	O
pseudorandom	B-Algorithm
number	I-Algorithm
generator	I-Algorithm
(	O
PRNG	O
)	O
.	O
</s>
<s>
MULTI-S01	B-Algorithm
is	O
an	O
encryption	O
scheme	O
preserving	O
both	O
confidentiality	O
and	O
data	O
integrity	O
.	O
</s>
<s>
The	O
scheme	O
defines	O
a	O
pair	O
of	O
algorithms	O
;	O
the	O
encryption	O
,	O
the	O
corresponding	O
decryption	O
with	O
verification	B-Application
.	O
</s>
<s>
Coupling	O
with	O
an	O
efficient	O
keystream	B-Algorithm
generator	O
,	O
such	O
as	O
Panama	B-Algorithm
,	O
MUGI	B-Algorithm
,	O
and	O
RC4	B-Algorithm
,	O
the	O
algorithm	O
efficiently	O
encrypts	O
a	O
message	O
in	O
the	O
manner	O
of	O
a	O
single	O
path	O
process	O
,	O
i.e.	O
</s>
<s>
online	B-Algorithm
algorithm	I-Algorithm
.	O
</s>
<s>
The	O
decryption	O
function	O
cannot	O
be	O
used	O
in	O
such	O
manner	O
for	O
keeping	O
whole	O
resultant	O
data	O
until	O
successful	O
verification	B-Application
.	O
</s>
<s>
The	O
keysize	O
of	O
MULTI-S01	B-Algorithm
is	O
determined	O
by	O
which	O
keystream	B-Algorithm
generator	O
to	O
use	O
.	O
</s>
<s>
MULTI-S01	B-Algorithm
takes	O
a	O
security	O
parameter	O
which	O
determines	O
the	O
upperbound	O
probability	O
of	O
successful	O
forgery	O
.	O
</s>
<s>
MULTI-S01	B-Algorithm
with	O
the	O
PRNG	O
Panama	B-Algorithm
was	O
among	O
the	O
cryptographic	O
techniques	O
recommended	O
for	O
Japanese	O
government	O
use	O
by	O
CRYPTREC	O
in	O
2003	O
,	O
however	O
,	O
has	O
been	O
dropped	O
to	O
"	O
candidate	O
"	O
by	O
CRYPTREC	O
revision	O
in	O
2013	O
.	O
</s>
<s>
The	O
security	O
of	O
MULTI-S01	B-Algorithm
is	O
based	O
on	O
that	O
of	O
underlying	O
PRNG	O
.	O
</s>
<s>
If	O
a	O
secure	O
PRNG	O
is	O
used	O
,	O
then	O
the	O
security	O
of	O
MULTI-S01	B-Algorithm
with	O
respect	O
to	O
confidentiality	O
and	O
data	O
integrity	O
has	O
been	O
proven	O
.	O
</s>
