<s>
The	O
ARPANET	O
pioneered	O
the	O
creation	O
of	O
novel	O
encryption	O
devices	O
for	O
packet	O
networks	O
in	O
the	O
1970s	O
and	O
1980s	O
,	O
and	O
as	O
such	O
were	O
ancestors	O
to	O
today	O
's	O
IPsec	B-Protocol
architecture	O
,	O
and	O
High	B-Application
Assurance	I-Application
Internet	I-Application
Protocol	I-Application
Encryptor	I-Application
(	O
HAIPE	B-Application
)	O
devices	O
more	O
specifically	O
.	O
</s>
<s>
DuPont	O
and	O
Fidler	O
provide	O
a	O
historical	O
perspective	O
of	O
ARPANET	B-Protocol
encryption	I-Protocol
devices	I-Protocol
in	O
the	O
broader	O
evolution	O
of	O
computer	O
networks	O
and	O
cybersecurity	O
.	O
</s>
<s>
BCR	O
was	O
the	O
first	O
network	O
security	O
system	O
to	O
support	O
TCP/IP	B-Protocol
traffic	O
for	O
IPv3	O
,	O
and	O
it	O
incorporated	O
the	O
first	O
Data	B-Algorithm
Encryption	I-Algorithm
Standard	I-Algorithm
(	O
DES	B-Algorithm
)	O
chips	O
that	O
were	O
validated	O
by	O
the	O
U.S.	O
National	O
Bureau	O
of	O
Standards	O
(	O
now	O
called	O
NIST	O
)	O
.	O
</s>
<s>
It	O
provided	O
automated	O
,	O
KDC-based	O
key	O
management	O
and	O
access	O
control	O
(	O
as	O
later	O
adopted	O
by	O
Kerberos	B-Protocol
and	O
Blacker	O
)	O
,	O
and	O
supported	O
IP	O
header	O
bypass	O
.	O
</s>
<s>
It	O
was	O
updated	O
to	O
use	O
TCP/IP	B-Protocol
(	O
IPv4	O
)	O
and	O
newer	O
COMSEC	O
technology	O
(	O
KG-84	O
)	O
,	O
but	O
still	O
manually	O
keyed	O
.	O
</s>
<s>
They	O
were	O
intended	O
for	O
use	O
in	O
the	O
Defense	O
Data	O
Network	O
and	O
also	O
in	O
DARPA	O
Low-Cost	O
Packet	O
Radios	O
in	O
the	O
SURAN	B-Protocol
project	O
.	O
</s>
