<s>
In	O
cryptography	O
,	O
DEAL	O
(	O
Data	B-Algorithm
Encryption	I-Algorithm
Algorithm	I-Algorithm
with	O
Larger	O
blocks	O
)	O
is	O
a	O
symmetric	B-Algorithm
block	O
cipher	O
derived	O
from	O
the	O
Data	B-Algorithm
Encryption	I-Algorithm
Standard	I-Algorithm
(	O
DES	B-Algorithm
)	O
.	O
</s>
<s>
Its	O
design	O
was	O
presented	O
Lars	O
Knudsen	O
at	O
the	O
SAC	B-Application
conference	O
in	O
1997	O
,	O
and	O
submitted	O
as	O
a	O
proposal	O
to	O
the	O
AES	O
contest	O
in	O
1998	O
by	O
Richard	O
Outerbridge	O
.	O
</s>
<s>
DEAL	O
is	O
a	O
Feistel	B-Algorithm
network	I-Algorithm
which	O
uses	O
DES	B-Algorithm
as	O
the	O
round	O
function	O
.	O
</s>
<s>
It	O
has	O
performance	O
comparable	O
to	O
Triple	B-Algorithm
DES	I-Algorithm
,	O
and	O
was	O
therefore	O
relatively	O
slow	O
among	O
AES	O
candidates	O
.	O
</s>
