<s>
The	O
FISH	O
(	O
FIbonacci	O
SHrinking	O
)	O
stream	B-Algorithm
cipher	I-Algorithm
is	O
a	O
fast	O
software	O
based	O
stream	B-Algorithm
cipher	I-Algorithm
using	O
Lagged	B-Algorithm
Fibonacci	I-Algorithm
generators	I-Algorithm
,	O
plus	O
a	O
concept	O
from	O
the	O
shrinking	B-Algorithm
generator	I-Algorithm
cipher	O
.	O
</s>
<s>
However	O
,	O
in	O
the	O
same	O
paper	O
where	O
he	O
proposed	O
Pike	B-Algorithm
,	O
Ross	O
Anderson	O
showed	O
that	O
FISH	O
can	O
be	O
broken	O
with	O
just	O
a	O
few	O
thousand	O
bits	O
of	O
known	O
plaintext	O
.	O
</s>
