<s>
In	O
telecommunication	O
,	O
the	O
term	O
security	B-General_Concept
kernel	I-General_Concept
has	O
the	O
following	O
meanings	O
:	O
</s>
<s>
In	O
computer	O
and	O
communications	O
security	O
,	O
the	O
central	O
part	O
of	O
a	O
computer	O
or	O
communications	O
system	O
hardware	B-Architecture
,	O
firmware	B-Application
,	O
and	O
software	O
that	O
implements	O
the	O
basic	O
security	O
procedures	O
for	O
controlling	O
access	O
to	O
system	O
resources	O
.	O
</s>
<s>
A	O
self-contained	O
usually	O
small	O
collection	O
of	O
key	O
security-related	O
statements	O
that	O
(	O
a	O
)	O
works	O
as	O
a	O
part	O
of	O
an	O
operating	B-General_Concept
system	I-General_Concept
to	O
prevent	O
unauthorized	O
access	O
to	O
,	O
or	O
use	O
of	O
,	O
the	O
system	O
and	O
(	O
b	O
)	O
contains	O
criteria	O
that	O
must	O
be	O
met	O
before	O
specified	O
programs	O
can	O
be	O
accessed	O
.	O
</s>
<s>
Hardware	B-Architecture
,	O
firmware	B-Application
,	O
and	O
software	O
elements	O
of	O
a	O
trusted	O
computing	O
base	O
that	O
implement	O
the	O
reference	B-Application
monitor	I-Application
concept	O
.	O
</s>
