helib (spack): HElib is an open-source (Apache License v2.0) software library that implements homomorphic encryption (HE). Currently available schemes are the implementations of the Brakerski-Gentry-Vaikuntanathan (BGV) scheme with bootstrapping and the Approximate Number scheme of Cheon-Kim-Kim- Song (CKKS), along with many optimizations to make homomorphic evaluation run faster, focusing mostly on effective use of the Smart- Vercauteren ciphertext packing techniques and the Gentry-Halevi-Smart optimizations. 
Keywords: bgv|crypto|crypto-library|cryptography|encryption|encryption-library|helib|privacy-by-design|privacy-enhancing-technologies