A modular Rust implementation of ICE-FROST: Identifiable Cheating Entity Flexible Round-Optimised Schnorr Threshold signatures supporting static group keys.
Please see the documentation for usage examples.
This library has a modular backend supporting
- arbitrary curves defined with the arkworks library suite;
- arbitrary hash functions for the internal random oracles of the ICE-FROST ciphersuite;
- an arbitrary AEAD for the secret shares encryption part of the DKG / Key resharing phase.
Note however that two parameters are not modular, at least in the current version:
- the hash function targeted security parameter: this crate assumes 128 bits of collision security for the ciphersuite's internal hashers. One MUST provide a hasher with at least 128 bits of collision security when instantiating an ICE-FROST ciphersuite.
- the secret share encryption mechanism: this part of the distributed key generation currently relies on the ciphersuite's AEAD but with a fixed HKDF instantiated from SHA-256.
This library also provides by default an example instantiation over the Secp256k1 curve with SHA-256, to be used in tests and benchmarks.
This crate can be made no_std compliant, by relying on the alloc crate instead.
std: activated by-default, allowing use of the Rust standard libraryasm: deactivated by-default, allowing x86-64 assembly optimization for finite field operations. This feature also activates thestdone.
This codebase is under development and is at an academic proof-of-concept prototype level. In particular, this implementation has not received careful code review yet, and hence is NOT ready for production use.
Licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.