<s>
In	O
cryptography	O
,	O
CS-Cipher	B-Algorithm
(	O
for	O
Chiffrement	O
Symétrique	O
)	O
is	O
a	O
block	O
cipher	O
invented	O
by	O
Jacques	O
Stern	O
and	O
Serge	O
Vaudenay	O
in	O
1998	O
.	O
</s>
<s>
It	O
operates	O
on	O
blocks	O
of	O
64	O
bits	O
using	O
an	O
8-round	O
Feistel	B-Algorithm
network	I-Algorithm
and	O
is	O
optimized	O
for	O
8-bit	O
processors	O
.	O
</s>
