Module bls 

BLS (Boneh-Lynn-Shacham) Signatures for efficient signature aggregation.

BLS signatures provide superior aggregation properties compared to Ed25519:

• N signatures from N different signers aggregate into a single signature
• Aggregated signature is the same size as individual signatures
• Efficient batch verification of aggregated signatures
• Ideal for multi-peer coordination in CHIE protocol

Example

use chie_crypto::bls::{BlsKeypair, aggregate_signatures, verify_aggregated};

// Generate keypairs for multiple signers
let keypair1 = BlsKeypair::generate();
let keypair2 = BlsKeypair::generate();
let keypair3 = BlsKeypair::generate();

let message = b"Hello, CHIE Protocol!";

// Each signer signs the same message
let sig1 = keypair1.sign(message);
let sig2 = keypair2.sign(message);
let sig3 = keypair3.sign(message);

// Aggregate signatures into a single signature
let aggregated = aggregate_signatures(&[sig1, sig2, sig3]).unwrap();

// Verify the aggregated signature against all public keys
let public_keys = vec![
    keypair1.public_key(),
    keypair2.public_key(),
    keypair3.public_key(),
];

assert!(verify_aggregated(&public_keys, message, &aggregated).is_ok());

Structs

BlsKeypair

BLS keypair (secret key + public key)

BlsPublicKey

BLS public key (point in the Ristretto group)

BlsSecretKey

BLS secret key (scalar in the Ristretto group)

BlsSignature

BLS signature (point in the Ristretto group)

Enums

BlsError

BLS signature error types

Functions

aggregate_signatures

Aggregate multiple BLS signatures into a single signature

verify

Verify a BLS signature against a public key and message

verify_aggregated

Verify an aggregated BLS signature against multiple public keys and a single message

verify_aggregated_different_messages

Verify an aggregated BLS signature where each signer signed a different message

Type Aliases

BlsResult