<s>
geli	B-Application
is	O
a	O
block	O
device-layer	O
disk	O
encryption	O
system	O
written	O
for	O
FreeBSD	B-Operating_System
,	O
introduced	O
in	O
version	O
6.0	O
.	O
</s>
<s>
It	O
uses	O
the	O
GEOM	B-Application
disk	O
framework	O
.	O
</s>
<s>
geli	B-Application
was	O
initially	O
written	O
to	O
protect	O
data	O
on	O
a	O
user	O
's	O
computer	O
in	O
situations	O
of	O
physical	O
theft	O
of	O
hardware	O
,	O
disallowing	O
the	O
thief	O
access	O
to	O
the	O
protected	O
data	O
.	O
</s>
<s>
geli	B-Application
allows	O
the	O
key	O
to	O
consist	O
of	O
several	O
information	O
components	O
(	O
a	O
user	O
entered	O
passphrase	O
,	O
random	O
bits	O
from	O
a	O
file	O
,	O
etc	O
.	O
</s>
<s>
The	O
geli	B-Application
utility	O
is	O
different	O
from	O
gbde	B-Application
in	O
that	O
it	O
offers	O
different	O
features	O
and	O
uses	O
a	O
different	O
scheme	O
for	O
doing	O
cryptographic	O
work	O
.	O
</s>
<s>
It	O
supports	O
the	O
crypto	O
framework	O
within	O
FreeBSD	B-Operating_System
,	O
allowing	O
hardware	O
cryptographic	O
acceleration	O
if	O
available	O
,	O
as	O
well	O
as	O
supporting	O
more	O
cryptographic	O
algorithms	O
(	O
currently	O
AES	B-Algorithm
,	O
Triple	B-Algorithm
DES	I-Algorithm
,	O
Blowfish	B-Algorithm
and	O
Camellia	B-Algorithm
)	O
and	O
data	O
authentication/integrity	O
verification	O
via	O
MD5	B-Algorithm
,	O
SHA1	B-Algorithm
,	O
RIPEMD160	B-Algorithm
,	O
SHA256	B-Algorithm
,	O
SHA384	B-Algorithm
or	O
SHA512	B-Algorithm
as	O
Hash	O
Message	O
Authentication	O
Codes	O
.	O
</s>
