A pure Rust multi-provider digital signature library with support for elliptic curve digital signature algorithms, namely ECDSA (described in FIPS 186‑4) and Ed25519 (described in RFC 8032).
Signatory provides a thread-safe and object-safe API and implements providers for many popular Rust crates, including ed25519‑dalek, secp256k1‑rs, ring, and sodiumoxide.
About
Signatory exposes a thread-and-object-safe API for creating digital signatures which allows several signature providers to be compiled-in and available with specific providers selected at runtime.
Provider Support
Signatory includes the following providers, which are each packaged into their own respective crates:
ECDSA providers
| Provider Crate | Backend Crate | Type | P‑256 | P‑384 | secp256k1 |
|---|---|---|---|---|---|
| signatory‑ring | ring | Soft | ✅ | ✅ | ⛔ |
| signatory‑secp256k1 | secp256k1‑rs | Soft | ⛔ | ⛔ | ✅ |
| signatory‑yubihsm | yubihsm‑rs | Hard | ✅ | ✅ | ✅ |
Ed25519 providers
| Provider Crate | Backend Crate | Type | Signing | Verification |
|---|---|---|---|---|
| signatory‑dalek | ed25519‑dalek | Soft | 51 k/s | 18 k/s |
| signatory‑ring | ring | Soft | 47 k/s | 16 k/s |
| signatory‑sodiumoxide | sodiumoxide | Soft | 38 k/s | 15 k/s |
| signatory‑yubihsm | yubihsm‑rs | Hard | ~8/s | N/A |
Above benchmarks performed using cargo bench on an Intel Xeon E3-1225 v5 @ 3.30GHz.
License
Signatory is distributed under the terms of either the MIT license or the Apache License (Version 2.0), at your option.
See LICENSE-APACHE and LICENSE-MIT for details.