<s>
TrueCrypt	B-Application
is	O
based	O
on	O
Encryption	O
for	O
the	O
Masses	O
(	O
E4M	B-Application
)	O
,	O
an	O
open	B-License
source	I-License
on-the-fly	O
encryption	O
program	O
first	O
released	O
in	O
1997	O
.	O
</s>
<s>
However	O
,	O
E4M	B-Application
was	O
discontinued	O
in	O
2000	O
as	O
the	O
author	O
,	O
Paul	O
Le	O
Roux	O
,	O
began	O
working	O
on	O
commercial	O
encryption	O
software	O
.	O
</s>
<s>
Added	O
plausible	O
deniability	O
for	O
containers	O
(	O
although	O
due	O
to	O
its	O
simplistic	O
nature	O
,	O
the	O
practical	O
value	O
of	O
the	O
"	O
plausible	O
deniability	O
"	O
offered	O
in	O
this	O
version	O
is	O
debatable	O
)	O
,	O
Plausible	O
Deniability	O
and	O
various	O
bugfixes	O
and	O
improvements	O
over	O
E4M	B-Application
.	O
</s>
<s>
1.0a	O
February	O
3	O
,	O
2004	O
Removed	O
support	O
for	O
Windows	O
98	O
and	O
ME	O
because	O
the	O
author	O
of	O
the	O
Windows	O
9x	O
driver	O
for	O
E4M	B-Application
(	O
the	O
ScramDisk	B-Application
driver	O
)	O
gave	O
no	O
permission	O
that	O
would	O
allow	O
his	O
code	O
to	O
be	O
used	O
in	O
projects	O
derived	O
from	O
E4M.The	O
authors	O
of	O
Scramdisk	B-Application
and	O
E4M	B-Application
exchanged	O
some	O
code	O
–	O
the	O
author	O
of	O
Scramdisk	B-Application
provided	O
a	O
driver	O
for	O
Windows	O
9x	O
,	O
and	O
the	O
author	O
of	O
E4M	B-Application
provided	O
a	O
driver	O
for	O
Windows	O
NT	O
,	O
enabling	O
cross-platform	O
versions	O
of	O
both	O
programs	O
.	O
</s>
<s>
Release	O
made	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
,	O
and	O
signed	O
as	O
the	O
TrueCrypt	B-Application
Foundation	O
–	O
previous	O
versions	O
were	O
signed	O
by	O
TrueCrypt	B-Application
Team	O
.	O
</s>
<s>
2.1	O
June	O
21	O
,	O
2004	O
New	O
release	O
due	O
to	O
licensing	O
issues	O
relating	O
to	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
This	O
release	O
was	O
made	O
under	O
original	O
E4M	B-Application
license	O
.	O
</s>
<s>
2.1a	O
October	O
1	O
,	O
2004	O
Removed	O
IDEA	B-Algorithm
encryption	I-Algorithm
algorithm	I-Algorithm
.	O
</s>
<s>
Version	O
released	O
on	O
SourceForge.net,	O
which	O
became	O
the	O
official	O
TrueCrypt	B-Application
domain	O
.	O
</s>
<s>
The	O
official	O
TrueCrypt	B-Application
domain	O
moved	O
back	O
to	O
truecrypt.org	O
again	O
at	O
the	O
beginning	O
of	O
May	O
2005	O
,	O
and	O
the	O
SourceForge	B-Application
website	O
redirects	O
to	O
there	O
.	O
</s>
<s>
4.0	O
November	O
1	O
,	O
2005	O
Added	O
support	O
for	O
Linux	O
,	O
x86-64	O
,	O
Big	O
Endian	O
machines	O
,	O
keyfiles	O
,	O
hot	O
keys	O
,	O
ability	O
to	O
protect	O
hidden	O
volumes	O
against	O
corruption	O
when	O
their	O
outer	O
volumes	O
are	O
mounted	O
,	O
favorite	O
volumes	O
,	O
the	O
Whirlpool	B-Algorithm
hash	I-Algorithm
algorithm	O
,	O
and	O
language	O
packs	O
.	O
</s>
<s>
LRW	O
mode	O
also	O
neutralized	O
an	O
exploit	O
that	O
could	O
(	O
under	O
certain	O
circumstances	O
)	O
be	O
used	O
to	O
compromise	O
the	O
plausible	O
deniability	O
of	O
a	O
TrueCrypt	B-Application
volume	O
by	O
allowing	O
it	O
to	O
be	O
distinguished	O
from	O
random	O
data	O
.	O
</s>
<s>
This	O
release	O
phased	O
out	O
support	O
of	O
64-bit	O
block	O
ciphers	O
,	O
disallowing	O
creation	O
of	O
new	O
containers	O
using	O
the	O
Blowfish	B-Algorithm
,	O
CAST-128	B-Algorithm
,	O
or	O
Triple	B-Algorithm
DES	I-Algorithm
algorithms	O
.	O
</s>
<s>
Pipelining	B-General_Concept
,	O
SHA-512	O
.	O
</s>
<s>
This	O
version	O
also	O
reduced	O
the	O
minimum	O
memory	O
requirements	O
for	O
the	O
TrueCrypt	B-Application
Boot	O
Loader	O
(	O
AES	O
)	O
from	O
42	O
KB	O
to	O
27	O
KB	O
in	O
Windows	O
and	O
included	O
significant	O
improvements	O
in	O
AES	O
encryption/decryption	O
performance	O
.	O
</s>
<s>
Changed	O
to	O
assembly	B-Language
implementation	O
of	O
AES	O
.	O
</s>
<s>
6.0	O
July	O
4	O
,	O
2008	O
Parallelized	O
encryption/decryption	O
on	O
multi-core	B-Architecture
processors	I-Architecture
(	O
or	O
multi-processor	O
systems	O
)	O
.	O
</s>
<s>
TrueCrypt	B-Application
boot	O
loader	O
now	O
customizable	O
.	O
</s>
<s>
6.2	O
May	O
11	O
,	O
2009	O
The	O
I/O	O
pipeline	B-General_Concept
of	O
the	O
Windows	O
version	O
now	O
uses	O
read-ahead	O
buffering	O
to	O
improve	O
read	O
performance	O
,	O
especially	O
on	O
solid-state	O
drives	O
.	O
</s>
<s>
"	O
System	O
Favorite	O
Volumes	O
"	O
that	O
allow	O
regular	O
TrueCrypt	B-Application
volumes	O
to	O
be	O
mounted	O
before	O
system	O
and	O
application	O
services	O
start	O
and	O
before	O
users	O
start	O
logging	O
on	O
.	O
</s>
<s>
7.0a	O
September	O
6	O
,	O
2010	O
Workaround	O
for	O
a	O
bug	O
that	O
caused	O
system	O
crashes	O
when	O
hibernating	O
Truecrypt-encrypted	O
systems	O
.	O
</s>
<s>
7.2	O
May	O
28	O
,	O
2014	O
Final	O
release	O
;	O
neutered	O
(	O
only	O
decryption	O
capability	O
)	O
;	O
Warns	O
that	O
TrueCrypt	B-Application
has	O
been	O
discontinued	O
on	O
all	O
operating	O
systems	O
and	O
may	O
contain	O
unfixed	O
security	O
issues	O
.	O
</s>
