libss

libss is a Rust library for secret sharing.

WARNING: This implementation has not received any audit and is NOT ready for production use.

Overview

libss provides an impelmentation of shamir secret sharing over the field GF(2**8), supporting arbitrary size secrets with up to 255 shares.

Directory structure

• src/gf256.rs: Rust module that provides an implementation of the finite field GF(2**8)
• src/shamir.rs: Rust module that impelments shamir secret sharing over GF256

This library comes with unit tests for each of the provided crates. Run the tests with:

cargo test

To perform the benchmarks, run the following command:

cargo bench

Future Goals

• improve interpolation algorithm
• wrap Share struct into a SignedShare struct so integrity of shares can be verified with a public key
• implement Feldman Secret Sharing Scheme, a verifiable secret sharing scheme
• guarantee constant-time cryptographic operations