<s>
The	O
Java	B-Language
Cryptography	I-Language
Extension	I-Language
(	O
JCE	O
)	O
is	O
an	O
officially	O
released	O
Standard	O
Extension	O
to	O
the	O
Java	B-Device
Platform	I-Device
and	O
part	O
of	O
Java	B-Language
Cryptography	I-Language
Architecture	I-Language
(	O
JCA	O
)	O
.	O
</s>
<s>
JCE	O
provides	O
a	O
framework	O
and	O
implementation	O
for	O
encryption	O
,	O
key	O
generation	O
and	O
key	B-Protocol
agreement	I-Protocol
,	O
and	O
Message	B-Algorithm
Authentication	I-Algorithm
Code	I-Algorithm
(	O
MAC	O
)	O
algorithms	O
.	O
</s>
<s>
JCE	O
supplements	O
the	O
Java	B-Device
platform	I-Device
,	O
which	O
already	O
includes	O
interfaces	O
and	O
implementations	O
of	O
message	O
digests	O
and	O
digital	O
signatures	O
.	O
</s>
<s>
Installation	O
is	O
specific	O
to	O
the	O
version	O
of	O
the	O
Java	B-Device
Platform	I-Device
being	O
used	O
,	O
with	O
downloads	O
available	O
for	O
,	O
,	O
and	O
.	O
</s>
