<s>
Firefly	B-Protocol
is	O
a	O
U.S.	O
National	O
Security	O
Agency	O
public-key	B-Application
key	O
exchange	O
protocol	O
,	O
used	O
in	O
EKMS	O
,	O
the	O
STU-III	O
secure	O
telephone	O
,	O
and	O
several	O
other	O
U.S.	O
cryptographic	O
systems	O
.	O
</s>
