<s>
The	O
NIST	B-Algorithm
hash	I-Algorithm
function	I-Algorithm
competition	I-Algorithm
was	O
an	O
open	O
competition	O
held	O
by	O
the	O
US	O
National	O
Institute	O
of	O
Standards	O
and	O
Technology	O
(	O
NIST	O
)	O
to	O
develop	O
a	O
new	O
hash	B-Error_Name
function	I-Error_Name
called	O
SHA-3	B-Algorithm
to	O
complement	O
the	O
older	O
SHA-1	B-Algorithm
and	O
SHA-2	B-Algorithm
.	O
</s>
<s>
"	O
NIST	O
is	O
initiating	O
an	O
effort	O
to	O
develop	O
one	O
or	O
more	O
additional	O
hash	B-Error_Name
algorithms	I-Error_Name
through	O
a	O
public	O
competition	O
,	O
similar	O
to	O
the	O
development	O
process	O
for	O
the	O
Advanced	B-Algorithm
Encryption	I-Algorithm
Standard	I-Algorithm
(	O
AES	B-Algorithm
)	O
.	O
"	O
</s>
<s>
The	O
competition	O
ended	O
on	O
October	O
2	O
,	O
2012	O
when	O
NIST	O
announced	O
that	O
Keccak	B-Algorithm
would	O
be	O
the	O
new	O
SHA-3	B-Algorithm
hash	B-Error_Name
algorithm	I-Error_Name
.	O
</s>
<s>
The	O
winning	O
hash	B-Error_Name
function	I-Error_Name
has	O
been	O
published	O
as	O
NIST	O
FIPS	B-Algorithm
202	I-Algorithm
the	O
"	O
SHA-3	B-Algorithm
Standard	O
"	O
,	O
to	O
complement	O
FIPS	O
180-4	O
,	O
the	O
Secure	O
Hash	B-Error_Name
Standard	O
.	O
</s>
<s>
On	O
October	O
2	O
,	O
2012	O
,	O
NIST	O
announced	O
its	O
winner	O
,	O
choosing	O
Keccak	B-Algorithm
,	O
created	O
by	O
Guido	O
Bertoni	O
,	O
Joan	O
Daemen	O
,	O
and	O
Gilles	O
Van	O
Assche	O
of	O
STMicroelectronics	O
and	O
Michaël	O
Peeters	O
of	O
NXP	O
.	O
</s>
<s>
The	O
winner	O
was	O
announced	O
to	O
be	O
Keccak	B-Algorithm
on	O
October	O
2	O
,	O
2012	O
.	O
</s>
<s>
NIST	O
selected	O
five	O
SHA-3	B-Algorithm
candidate	O
algorithms	O
to	O
advance	O
to	O
the	O
third	O
(	O
and	O
final	O
)	O
round	O
:	O
</s>
<s>
BLAKE	B-Algorithm
(	O
Aumasson	O
et	O
al	O
.	O
)	O
</s>
<s>
Grøstl	B-Algorithm
(	O
Knudsen	O
et	O
al	O
.	O
)	O
</s>
<s>
Keccak	B-Algorithm
(	O
Keccak	B-Algorithm
team	O
,	O
Daemen	O
et	O
al	O
.	O
)	O
</s>
<s>
Skein	B-Algorithm
(	O
Schneier	O
et	O
al	O
.	O
)	O
</s>
<s>
Diversity	O
:	O
The	O
finalists	O
included	O
hashes	B-Error_Name
based	O
on	O
different	O
modes	O
of	O
operation	O
,	O
including	O
the	O
HAIFA	O
and	O
sponge	B-Algorithm
function	I-Algorithm
constructions	O
,	O
and	O
with	O
different	O
internal	O
structures	O
,	O
including	O
ones	O
based	O
on	O
AES	B-Algorithm
,	O
bitslicing	O
,	O
and	O
alternating	O
XOR	O
with	O
addition	O
.	O
</s>
<s>
The	O
following	O
hash	B-Error_Name
function	I-Error_Name
submissions	O
were	O
accepted	O
for	O
Round	O
Two	O
,	O
but	O
did	O
not	O
make	O
it	O
to	O
the	O
final	O
round	O
.	O
</s>
<s>
The	O
following	O
hash	B-Error_Name
function	I-Error_Name
submissions	O
were	O
accepted	O
for	O
Round	O
One	O
but	O
did	O
not	O
pass	O
to	O
Round	O
Two	O
.	O
</s>
<s>
MD6	B-Algorithm
(	O
Rivest	O
et	O
al	O
.	O
)	O
</s>
