HElib is a software library that implements [homomorphic encryption] 6 (HE). Currently available is an implementation of the [Brakerski-Gentry-Vaikuntanathan] 1 (BGV) scheme, along with many optimizations to make homomorphic evaluation runs faster, focusing mostly on effective use of the [Smart-Vercauteren] 2 ciphertext packing techniques and the [Gentry-Halevi-Smart] 3 optimizations.
This library is written in C++ and uses the [NTL mathematical library] 4. It is distributed under the terms of the [GNU General Public License] 5 (GPL).