https://github.com/mortendahl/rust-paillier
Rust library for the Paillier partially homomorphic encryption scheme, offering also packed encoding for encrypting several values together as well as several zero-knowledge proofs related to typical use-cases. Supports several underlying arbitrary precision libraries, including RAMP and GMP.
Several companies have invested resources in the development of this library, including Snips who implemented the original version for use in their privacy-preserving analytics system, and KZen networks who contributed with implementations of many zero-knowledge proofs. See contributions below for more details.
Important: while we have followed recommendations regarding the scheme itself, some parts of this library have not yet been harden against non-cryptographic attacks such as side-channel attacks.