<s>
A	O
certificate	B-Protocol
policy	I-Protocol
(	O
CP	O
)	O
is	O
a	O
document	O
which	O
aims	O
to	O
state	O
what	O
are	O
the	O
different	O
entities	O
of	O
a	O
public	B-Architecture
key	I-Architecture
infrastructure	I-Architecture
(	O
PKI	O
)	O
,	O
their	O
roles	O
and	O
their	O
duties	O
.	O
</s>
<s>
When	O
in	O
use	O
with	O
X.509	O
certificates	O
,	O
a	O
specific	O
field	O
can	O
be	O
set	O
to	O
include	O
a	O
link	O
to	O
the	O
associated	O
certificate	B-Protocol
policy	I-Protocol
.	O
</s>
<s>
The	O
reference	O
document	O
for	O
writing	O
a	O
certificate	B-Protocol
policy	I-Protocol
is	O
,	O
,	O
.	O
</s>
<s>
The	O
RFC	O
proposes	O
a	O
framework	O
for	O
the	O
writing	O
of	O
certificate	B-Protocol
policies	I-Protocol
and	O
Certification	O
Practice	O
Statements	O
(	O
CPS	O
)	O
.	O
</s>
<s>
An	O
important	O
point	O
of	O
the	O
certificate	B-Protocol
policy	I-Protocol
is	O
the	O
description	O
of	O
the	O
authorized	O
and	O
prohibited	O
certificate	O
uses	O
.	O
</s>
<s>
For	O
example	O
,	O
a	O
certificate	O
can	O
be	O
issued	O
for	O
digital	O
signature	O
of	O
e-mail	O
(	O
aka	O
S/MIME	B-Protocol
)	O
,	O
encryption	O
of	O
data	O
,	O
authentication	O
(	O
e.g.	O
</s>
<s>
of	O
a	O
Web	B-Application
server	I-Application
,	O
as	O
when	O
one	O
uses	O
HTTPS	B-Protocol
)	O
or	O
further	O
issuance	O
of	O
certificates	O
(	O
delegation	O
of	O
authority	O
)	O
.	O
</s>
<s>
When	O
a	O
certification	O
application	O
is	O
filled	O
,	O
the	O
certification	B-Architecture
authority	I-Architecture
(	O
or	O
,	O
by	O
delegation	O
,	O
the	O
registration	O
authority	O
)	O
is	O
in	O
charge	O
of	O
checking	O
the	O
information	O
provided	O
by	O
the	O
applicant	O
,	O
such	O
as	O
his	O
identity	O
.	O
</s>
<s>
The	O
generation	O
of	O
the	O
keys	O
is	O
also	O
mentioned	O
in	O
a	O
certificate	B-Protocol
policy	I-Protocol
.	O
</s>
<s>
This	O
part	O
describes	O
what	O
are	O
the	O
technical	O
requirements	O
regarding	O
key	O
sizes	O
,	O
protection	O
of	O
private	B-Application
keys	I-Application
(	O
by	O
use	O
of	O
key	O
escrow	O
)	O
and	O
various	O
types	O
of	O
controls	O
regarding	O
the	O
technical	O
environment	O
(	O
computers	O
,	O
network	O
)	O
.	O
</s>
<s>
Those	O
lists	B-Protocol
are	O
a	O
vital	O
part	O
of	O
any	O
public	B-Architecture
key	I-Architecture
infrastructure	I-Architecture
,	O
and	O
as	O
such	O
,	O
a	O
specific	O
chapter	O
is	O
dedicated	O
to	O
the	O
description	O
of	O
the	O
management	O
associated	O
with	O
these	O
lists	B-Protocol
,	O
to	O
ensure	O
consistency	O
between	O
certificate	O
status	O
and	O
the	O
content	O
of	O
the	O
list	O
.	O
</s>
<s>
The	O
PKI	O
needs	O
to	O
be	O
audited	O
to	O
ensure	O
it	O
complies	O
with	O
the	O
rules	O
stated	O
in	O
its	O
documents	O
,	O
such	O
as	O
the	O
certificate	B-Protocol
policy	I-Protocol
.	O
</s>
