<s>
In	O
cryptography	O
,	O
UES	B-Algorithm
(	O
Universal	B-Algorithm
Encryption	I-Algorithm
Standard	I-Algorithm
)	O
is	O
a	O
block	O
cipher	O
designed	O
in	O
1999	O
by	O
Helena	O
Handschuh	O
and	O
Serge	O
Vaudenay	O
.	O
</s>
<s>
They	O
proposed	O
it	O
as	O
a	O
transitional	O
step	O
,	O
to	O
prepare	O
for	O
the	O
completion	O
of	O
the	O
AES	B-Algorithm
process	O
.	O
</s>
<s>
UES	B-Algorithm
was	O
designed	O
with	O
the	O
same	O
interface	O
as	O
AES	B-Algorithm
:	O
a	O
block	O
size	O
of	O
128	O
bits	O
and	O
key	O
size	O
of	O
128	O
,	O
192	O
,	O
or	O
256	O
bits	O
.	O
</s>
<s>
It	O
consists	O
of	O
two	O
parallel	O
Triple	B-Algorithm
DES	I-Algorithm
encryptions	O
on	O
the	O
halves	O
of	O
the	O
block	O
,	O
with	O
key	B-Algorithm
whitening	I-Algorithm
and	O
key-dependent	O
swapping	O
of	O
bits	O
between	O
the	O
halves	O
.	O
</s>
<s>
The	O
key	B-Algorithm
schedule	I-Algorithm
is	O
taken	O
from	O
DEAL	O
.	O
</s>
