<s>
The	O
HAIFA	B-Algorithm
construction	I-Algorithm
(	O
hash	B-Algorithm
iterative	O
framework	O
)	O
is	O
a	O
cryptographic	O
structure	O
used	O
in	O
the	O
design	O
of	O
hash	B-Algorithm
functions	I-Algorithm
.	O
</s>
<s>
It	O
is	O
one	O
of	O
the	O
modern	O
alternatives	O
to	O
the	O
Merkle	B-Algorithm
–	I-Algorithm
Damgård	I-Algorithm
construction	I-Algorithm
,	O
avoiding	O
its	O
weaknesses	O
like	O
length	O
extension	O
attacks	O
.	O
</s>
<s>
Three	O
of	O
the	O
14	O
second	O
round	O
candidates	O
in	O
the	O
NIST	B-Algorithm
hash	I-Algorithm
function	I-Algorithm
competition	I-Algorithm
were	O
based	O
on	O
HAIFA	B-Algorithm
constructions	I-Algorithm
(	O
BLAKE	B-Algorithm
,	O
SHAvite-3	O
,	O
ECHO	O
)	O
.	O
</s>
<s>
Other	O
hash	B-Algorithm
functions	I-Algorithm
based	O
on	O
it	O
are	O
LAKE	O
,	O
Sarmal	O
,	O
SWIFFTX	B-Algorithm
and	O
HNF-256	O
.	O
</s>
<s>
The	O
construction	O
of	O
Skein	B-Algorithm
(	O
Unique	O
Block	O
Iteration	O
)	O
is	O
similar	O
to	O
HAIFA	B-Algorithm
.	O
</s>
<s>
Another	O
alternative	O
construction	O
is	O
the	O
sponge	B-Algorithm
construction	I-Algorithm
.	O
</s>
