<s>
Distributed	B-Protocol
System	I-Protocol
Security	I-Protocol
Architecture	I-Protocol
or	O
(	O
DSSA	O
)	O
is	O
a	O
computer	O
security	O
architecture	O
that	O
provides	O
a	O
suite	O
of	O
functions	O
including	O
login	O
,	O
authentication	O
,	O
and	O
access	O
control	O
in	O
a	O
distributed	B-Architecture
system	I-Architecture
.	O
</s>
<s>
To	O
differ	O
from	O
other	O
similar	O
architectures	O
,	O
the	O
DSSA	O
architecture	O
offers	O
the	O
ability	O
to	O
access	O
all	O
these	O
functions	O
without	O
the	O
trusted	O
server	B-Application
(	O
known	O
as	O
a	O
certificate	B-Architecture
authority	I-Architecture
)	O
being	O
active	O
.	O
</s>
<s>
In	O
DSSA	O
,	O
security	O
objects	O
are	O
handled	O
by	O
owners	O
and	O
access	O
is	O
controlled	O
by	O
the	O
central	O
,	O
universally	O
trusted	O
,	O
certificate	B-Architecture
authority	I-Architecture
.	O
</s>
<s>
DSSA/SPX	B-Protocol
is	O
the	O
authentication	B-Protocol
protocol	I-Protocol
of	O
DSSA	O
.	O
</s>
<s>
The	O
CDC	O
is	O
a	O
certificate	O
granting	O
server	B-Application
while	O
the	O
certificate	O
is	O
a	O
ticket	O
signed	O
by	O
CA	O
which	O
contains	O
the	O
public	O
key	O
of	O
the	O
party	O
being	O
certified	O
.	O
</s>
