<s>
In	O
cryptography	O
,	O
WAKE	O
is	O
a	O
stream	B-Algorithm
cipher	I-Algorithm
designed	O
by	O
David	O
Wheeler	O
in	O
1993	O
.	O
</s>
<s>
The	O
cipher	O
works	O
in	O
cipher	O
feedback	O
mode	B-Algorithm
,	O
generating	O
keystream	B-Algorithm
blocks	O
from	O
previous	O
ciphertext	O
blocks	O
.	O
</s>
<s>
WAKE	O
uses	O
an	O
S-box	B-Algorithm
with	O
256	O
entries	O
of	O
32-bit	O
words	O
.	O
</s>
