<s>
SOBER-128	B-Algorithm
is	O
a	O
synchronous	O
stream	B-Algorithm
cipher	I-Algorithm
designed	O
by	O
Hawkes	O
and	O
Rose	O
(	O
2003	O
)	O
and	O
is	O
a	O
member	O
of	O
the	O
SOBER	B-Algorithm
family	O
of	O
ciphers	B-Application
.	O
</s>
<s>
SOBER-128	B-Algorithm
was	O
also	O
designed	O
to	O
provide	O
MAC	B-Algorithm
(	O
message	B-Algorithm
authentication	I-Algorithm
code	I-Algorithm
)	O
functionality	O
.	O
</s>
<s>
Watanabe	O
and	O
Furuya	O
(	O
2004	O
)	O
showed	O
a	O
weakness	O
in	O
the	O
MAC	B-Algorithm
generation	O
of	O
SOBER-128	B-Algorithm
which	O
means	O
an	O
attack	O
could	O
forge	O
a	O
message	O
with	O
probability	O
2−6	O
.	O
</s>
<s>
MAC	B-Algorithm
functionality	O
was	O
deleted	O
by	O
Qualcomm	O
from	O
SOBER-128	B-Algorithm
reference	O
code	O
.	O
</s>
<s>
SOBER-128	B-Algorithm
takes	O
a	O
key	O
up	O
to	O
128	O
bits	O
in	O
length	O
.	O
</s>
