<s>
According	O
to	O
"	O
Hakin9	O
"	O
,	O
CrypTool	B-Application
is	O
worldwide	O
the	O
most	O
widespread	O
e-learning	O
software	O
in	O
the	O
field	O
of	O
cryptology	O
.	O
</s>
<s>
CrypTool	B-Application
implements	O
more	O
than	O
400	O
algorithms	O
.	O
</s>
<s>
They	O
contain	O
most	O
classical	B-Algorithm
ciphers	I-Algorithm
,	O
as	O
well	O
as	O
modern	O
symmetric	O
and	O
asymmetric	B-Application
cryptography	I-Application
including	O
RSA	B-Architecture
,	O
ECC	O
,	O
digital	O
signatures	O
,	O
hybrid	O
encryption	O
,	O
homomorphic	O
encryption	O
,	O
and	O
Diffie	B-Protocol
–	I-Protocol
Hellman	I-Protocol
key	I-Protocol
exchange	I-Protocol
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
algorithms	O
,	O
solvers	O
(	O
analyzers	O
)	O
are	O
included	O
,	O
especially	O
for	O
classical	B-Algorithm
ciphers	I-Algorithm
.	O
</s>
<s>
Other	O
methods	O
(	O
for	O
instance	O
Huffman	B-General_Concept
code	I-General_Concept
,	O
AES	B-Algorithm
,	O
Keccak	B-Algorithm
,	O
MSS	O
)	O
are	O
visualized	O
.	O
</s>
<s>
The	O
development	O
of	O
CrypTool	B-Application
started	O
in	O
1998	O
.	O
</s>
<s>
Originally	O
developed	O
by	O
German	O
companies	O
and	O
universities	O
,	O
it	O
is	O
an	O
open-source	B-Application
project	O
since	O
2001	O
.	O
</s>
<s>
Currently	O
4	O
versions	O
of	O
CrypTool	B-Application
are	O
maintained	O
and	O
developed	O
:	O
The	O
CrypTool	B-Application
1	O
(	O
CT1	O
)	O
software	O
is	O
available	O
in	O
6	O
languages	O
(	O
English	O
,	O
German	O
,	O
Polish	O
,	O
Spanish	O
,	O
Serbian	O
,	O
and	O
French	O
)	O
.	O
</s>
<s>
CrypTool	B-Application
2	O
(	O
CT2	O
)	O
is	O
available	O
in	O
3	O
languages	O
(	O
English	O
,	O
German	O
,	O
Russian	O
)	O
.	O
</s>
<s>
All	O
others	O
,	O
JCrypTool	O
(	O
JCT	O
)	O
and	O
CrypTool-Online	O
(	O
CTO	O
)	O
,	O
are	O
available	O
only	O
in	O
English	O
and	O
German	O
.	O
</s>
<s>
The	O
goal	O
of	O
the	O
CrypTool	B-Application
project	O
is	O
to	O
make	O
users	O
aware	O
of	O
how	O
cryptography	O
can	O
help	O
against	O
network	O
security	O
threats	O
and	O
to	O
explain	O
the	O
underlying	O
concepts	O
of	O
cryptology	O
.	O
</s>
<s>
CrypTool	B-Application
1	O
(	O
CT1	O
)	O
is	O
written	O
in	O
C++	B-Language
and	O
designed	O
for	O
the	O
Microsoft	B-Application
Windows	I-Application
operating	I-Application
system	I-Application
.	O
</s>
<s>
A	O
port	O
of	O
CT1	O
to	O
Linux	B-Application
with	O
Qt4	B-Language
was	O
started	O
,	O
but	O
there	O
is	O
no	O
progress	O
anymore	O
.	O
</s>
<s>
In	O
2007	O
,	O
development	O
began	O
on	O
two	O
additional	O
projects	O
,	O
both	O
based	O
on	O
a	O
pure-plugin	O
architecture	O
,	O
to	O
serve	O
as	O
successors	O
to	O
the	O
original	O
CrypTool	B-Application
program	O
.	O
</s>
<s>
uses	O
the	O
concept	O
of	O
visual	B-Language
programming	I-Language
to	O
clarify	O
cryptographic	O
processes	O
.	O
</s>
<s>
runs	O
on	O
Windows	O
,	O
macOS	O
,	O
and	O
Linux	B-Application
,	O
and	O
offers	O
both	O
a	O
document-centric	O
and	O
a	O
function-centric	O
perspective	O
.	O
</s>
<s>
CrypTool	B-Application
has	O
received	O
several	O
international	O
awards	O
as	O
an	O
educational	O
program	O
,	O
such	O
as	O
the	O
TeleTrusT	O
Special	O
Award	O
2004	O
,	O
EISA	O
2004	O
,	O
IT	O
Security	O
Award	O
NRW	O
2004	O
,	O
and	O
Selected	O
Landmark	O
in	O
the	O
Land	O
of	O
Ideas	O
2008	O
award	O
.	O
</s>
<s>
CrypTool	B-Application
is	O
used	O
in	O
schools	O
,	O
universities	O
,	O
companies	O
and	O
agencies	O
for	O
education	O
and	O
awareness	O
training	O
.	O
</s>
<s>
Worldwide	O
,	O
the	O
CrypTool	B-Application
packages	O
are	O
downloaded	O
more	O
than	O
10,000	O
times	O
per	O
month	O
from	O
the	O
CrypTool	B-Application
website	O
.	O
</s>
<s>
The	O
CrypTool	B-Application
project	O
also	O
includes	O
the	O
website	O
CrypTool-Online	O
,	O
launched	O
in	O
2009	O
.	O
</s>
<s>
This	O
website	O
allows	O
users	O
to	O
try	O
cryptographic	O
methods	O
directly	O
within	O
a	O
browser	O
on	O
a	O
PC	O
or	O
on	O
a	O
smartphone	O
(	O
using	O
JavaScript	B-Language
)	O
,	O
without	O
the	O
need	O
to	O
download	O
and	O
install	O
software	O
.	O
</s>
<s>
Advanced	O
tasks	O
still	O
require	O
the	O
offline	O
versions	O
of	O
CrypTool	B-Application
.	O
</s>
<s>
In	O
2010	O
,	O
the	O
international	O
cipher	O
contest	O
MTC3	O
started	O
as	O
part	O
of	O
the	O
CrypTool	B-Application
project	O
.	O
</s>
<s>
In	O
early	O
2020	O
,	O
the	O
CrypTool	B-Application
project	O
decided	O
to	O
merge	O
with	O
a	O
similar	O
project	O
of	O
the	O
same	O
name	O
,	O
CrypTools	B-Application
,	O
founded	O
in	O
2017	O
in	O
Australia	O
by	O
Luka	O
Lafaye	O
de	O
Micheaux	O
,	O
Arthur	O
Guiot	O
,	O
and	O
Lucas	O
Gruwez	O
.	O
</s>
<s>
CrypTool	B-Application
,	O
much	O
older	O
and	O
known	O
,	O
thus	O
completely	O
"	O
absorbs	O
"	O
the	O
project	O
under	O
its	O
name	O
.	O
</s>
<s>
Previously	O
,	O
CrypTool	B-Application
focused	O
on	O
(	O
university	O
)	O
students	O
,	O
and	O
CrypTools	B-Application
on	O
developers	O
and	O
young	O
people	O
.	O
</s>
<s>
On	O
May	O
15	O
,	O
2020	O
,	O
in	O
the	O
midst	O
of	O
the	O
COVID-19	O
pandemic	O
,	O
CrypTool	B-Application
announces	O
the	O
creation	O
of	O
tools	O
to	O
test	O
Decentralized	O
contact	O
tracing	O
protocols	O
.	O
</s>
<s>
A	O
new	O
page	O
is	O
added	O
to	O
CTO	O
with	O
technical	O
description	O
of	O
the	O
algorithms	O
involved	O
in	O
DP-3T	B-Protocol
and	O
Exposure	B-Application
Notification	I-Application
.	O
</s>
<s>
In	O
addition	O
to	O
this	O
,	O
CrypTool	B-Application
also	O
announced	O
the	O
implementation	O
of	O
a	O
page	O
dedicated	O
to	O
raising	O
awareness	O
of	O
the	O
cryptographic	O
means	O
related	O
to	O
privacy	O
in	O
these	O
protocols	O
,	O
called	O
the	O
.	O
</s>
