Paillier encryption and Damgard-Jurik encryption

• Paillier encryption from the paper Public-Key Cryptosystems Based on Composite Degree Residuosity Classes. Check the module for more docs.
• Generalization of Paillier encryption, called Damgard-Jurik scheme from the paper A Generalization of Paillier’s Public-Key System with Applications to Electronic Voting. Check the module for more docs

The code is generic over the prime size and expansion factor S (for Damgard-Jurik)

By default, it uses standard library and rayon for parallelization.

For no_std support, build as

cargo build --no-default-features

and for wasm-32, build as

cargo build --no-default-features --target wasm32-unknown-unknown