<s>
OpenPuff	B-Application
Steganography	O
and	O
Watermarking	O
,	O
sometimes	O
abbreviated	O
OpenPuff	B-Application
or	O
Puff	O
,	O
is	O
a	O
free	B-Application
steganography	O
tool	O
for	O
Microsoft	B-Application
Windows	I-Application
created	O
by	O
Cosimo	O
Oliboni	O
and	O
still	O
maintained	O
as	O
independent	O
software	O
.	O
</s>
<s>
OpenPuff	B-Application
is	O
used	O
primarily	O
for	O
anonymous	O
asynchronous	O
data	O
sharing	O
:	O
</s>
<s>
OpenPuff	B-Application
does	O
it	O
in	O
an	O
invisible	O
steganographic	O
way	O
,	O
applied	O
to	O
any	O
supported	O
carrier	O
.	O
</s>
<s>
OpenPuff	B-Application
is	O
a	O
semi-open	O
source	O
program	O
:	O
</s>
<s>
Extensive	O
testing	O
has	O
been	O
performed	O
on	O
the	O
statistical	O
resistance	O
properties	O
of	O
the	O
CSPRNG	B-Algorithm
and	O
multi-cryptography	O
modules	O
,	O
using	O
the	O
ENT	O
,	O
NIST	O
and	O
DIEHARD	O
test	O
suites	O
.	O
</s>
<s>
Modified	O
carriers	O
will	O
need	O
much	O
less	O
change	O
(	O
Con1	O
)	O
and	O
,	O
lowering	O
their	O
random-like	O
statistical	O
response	O
,	O
deceive	O
many	O
steganalysis	O
tests	O
(	O
Con2	O
)	O
.	O
</s>
