<s>
PEM	O
format	O
is	O
the	O
same	O
as	O
DER	O
format	O
but	O
wrapped	O
inside	O
Base64	B-Protocol
encoding	I-Protocol
and	O
sandwiched	O
in	O
between	O
and	O
.	O
</s>
<s>
A	O
typical	O
use	O
of	O
a	O
PKCS	O
#7	O
file	O
would	O
be	O
to	O
store	O
certificates	O
and/or	O
certificate	B-Protocol
revocation	I-Protocol
lists	I-Protocol
(	O
CRL	O
)	O
.	O
</s>
<s>
Here	O
's	O
an	O
example	O
of	O
how	O
to	O
first	O
download	O
a	O
certificate	O
,	O
then	O
wrap	O
it	O
inside	O
a	O
PKCS	O
#7	O
archive	B-Application
and	O
then	O
read	O
from	O
that	O
archive	B-Application
:	O
</s>
