The posted article is a Rust implementation. The original implementation appears to be here:<p><a href="https://tfhe.github.io/tfhe/" rel="nofollow">https://tfhe.github.io/tfhe/</a><p>"TFHE: Fast Fully Homomorphic Encryption over the Torus"<p>"This library is the original version of TFHE that implements the base arithmetic and functionalities (bootstrapped and leveled)."<p>"TFHE is an open-source library for fully homomorphic encryption, distributed under the terms of the Apache 2.0 license."<p>Edit: Although actually that page links to Concrete, a set of Rust crates for FHE. The submitted link is part of the Concrete project.<p><a href="https://github.com/zama-ai/concrete">https://github.com/zama-ai/concrete</a>