<s>
Homomorphic	O
Encryption	O
library	O
or	O
HElib	B-Application
is	O
a	O
free	B-Application
and	O
open-source	B-Application
cross	B-Operating_System
platform	I-Operating_System
software	O
developed	O
by	O
IBM	O
that	O
implements	O
various	O
forms	O
of	O
homomorphic	O
encryption	O
.	O
</s>
<s>
HElib	B-Application
was	O
primarily	O
developed	O
by	O
Shai	O
Halevi	O
and	O
Victor	O
Shoup	O
,	O
shortly	O
after	O
Craig	O
Gentry	O
was	O
a	O
researcher	O
at	O
IBM	O
,	O
with	O
the	O
initial	O
release	O
being	O
on	O
May	O
5th	O
2013	O
.	O
</s>
<s>
HElib	B-Application
is	O
written	O
in	O
C++	B-Language
and	O
uses	O
the	O
NTL	B-Language
mathematical	I-Language
library	I-Language
.	O
</s>
