Module scheme 

Signing scheme implementations for ordered_broadcast.

This module provides protocol-specific wrappers around the generic signing schemes in commonware_cryptography::certificate. Each wrapper binds the scheme’s subject type to AckSubject, which is used for signing and verifying chunk acknowledgments.

Available Schemes

• ed25519: Attributable signatures with individual verification. HSM-friendly, no trusted setup required.
• bls12381_multisig: Attributable signatures with aggregated verification. Compact certificates while preserving attribution.
• bls12381_threshold: Non-attributable threshold signatures. Constant-size certificates regardless of committee size.

Modules

bls12381_multisig

BLS12-381 multi-signature implementation of the Scheme trait for ordered_broadcast.

bls12381_threshold

BLS12-381 threshold implementation of the Scheme trait for ordered_broadcast.

ed25519

Ed25519 implementation of the Scheme trait for ordered_broadcast.

Traits

Scheme

Marker trait for signing schemes compatible with ordered_broadcast.