<s>
In	O
cryptography	O
,	O
MESH	B-Algorithm
is	O
a	O
block	O
cipher	O
designed	O
in	O
2002	O
by	O
Jorge	O
Nakahara	O
,	O
Jr.	O
,	O
Vincent	O
Rijmen	O
,	O
Bart	O
Preneel	O
,	O
and	O
Joos	O
Vandewalle	O
.	O
</s>
<s>
MESH	B-Algorithm
is	O
based	O
directly	O
on	O
IDEA	B-Algorithm
and	O
uses	O
the	O
same	O
basic	O
operations	O
.	O
</s>
<s>
MESH	B-Algorithm
is	O
actually	O
a	O
family	O
of	O
3	O
variant	O
ciphers	O
with	O
block	O
sizes	O
of	O
64	O
,	O
96	O
,	O
and	O
128	O
bits	O
.	O
</s>
<s>
The	O
algorithm	O
uses	O
a	O
Lai	B-Algorithm
–	I-Algorithm
Massey	I-Algorithm
scheme	I-Algorithm
based	O
on	O
IDEA	B-Algorithm
's	O
,	O
but	O
with	O
a	O
larger	O
round	O
structure	O
,	O
or	O
"	O
MA-box	O
"	O
.	O
</s>
<s>
MESH	B-Algorithm
also	O
has	O
a	O
more	O
complex	O
key	B-Algorithm
schedule	I-Algorithm
than	O
IDEA	B-Algorithm
,	O
intended	O
to	O
prevent	O
weak	O
keys	O
and	O
other	O
insecure	O
patterns	O
in	O
subkeys	O
.	O
</s>
