<s>
B1	B-General_Concept
is	O
an	O
open	O
archive	O
file	O
format	O
that	O
supports	O
data	B-General_Concept
compression	I-General_Concept
and	O
archiving	O
.	O
</s>
<s>
B1	B-General_Concept
files	O
use	O
the	O
file	O
extension	O
"	O
.b1	O
"	O
or	O
"	O
.B1	O
"	O
and	O
the	O
MIME	B-Protocol
media	O
type	O
application/x	O
-b1	O
.	O
</s>
<s>
B1	B-General_Concept
incorporates	O
the	O
LZMA	B-General_Concept
compression	B-General_Concept
algorithm	I-General_Concept
.	O
</s>
<s>
B1	B-General_Concept
archive	O
combines	O
a	O
number	O
of	O
files	O
and	O
folders	O
into	O
one	O
or	O
more	O
volumes	O
,	O
optionally	O
adding	O
compression	O
and	O
encryption	O
.	O
</s>
<s>
Construction	O
of	O
the	O
B1	B-General_Concept
archive	O
involves	O
creating	O
a	O
binary	O
stream	O
of	O
records	O
and	O
building	O
volumes	O
of	O
that	O
stream	O
.	O
</s>
<s>
The	O
B1	B-General_Concept
archive	O
format	O
supports	O
password-based	O
AES-256	B-Algorithm
encryption	O
.	O
</s>
<s>
B1	B-General_Concept
files	O
are	O
created	O
and	O
opened	O
with	O
its	O
native	O
open-source	O
B1	B-General_Concept
Pack	O
Tool	O
,	O
as	O
well	O
as	O
B1	B-Application
Free	I-Application
Archiver	I-Application
utility	O
.	O
</s>
<s>
B1	B-General_Concept
Pack	O
is	O
an	O
open-source	O
software	O
project	O
that	O
produces	O
a	O
cross-platform	O
command-line	B-Application
tool	I-Application
and	O
a	O
Java	O
library	O
for	O
creating	O
and	O
extracting	O
file	O
archives	O
in	O
the	O
B1	B-General_Concept
archive	O
format	O
.	O
</s>
<s>
Source	O
code	O
of	O
the	O
project	O
is	O
published	O
at	O
GitHub	B-Application
.	O
</s>
<s>
B1	B-General_Concept
Pack	O
Project	O
is	O
released	O
under	O
the	O
Apache	B-Application
License	I-Application
.	O
</s>
<s>
The	O
B1	B-General_Concept
Pack	O
Tool	O
module	O
builds	O
a	O
single	O
executable	O
JAR	O
file	O
which	O
can	O
create	O
,	O
list	O
,	O
and	O
extract	O
B1	B-General_Concept
archive	O
files	O
from	O
a	O
command-line	B-Application
interface	I-Application
.	O
</s>
<s>
Integrity	O
check	O
with	O
the	O
Adler-32	B-Algorithm
algorithm	O
.	O
</s>
<s>
Data	B-General_Concept
compression	I-General_Concept
using	O
the	O
LZMA	B-General_Concept
algorithm	O
.	O
</s>
<s>
Supports	O
encryption	O
with	O
the	O
AES	B-Algorithm
algorithm	O
.	O
</s>
