anvil-t-schnorr

Coordinates:

org.exploit.anvil:t-schnorr:0.1.0

Java package:

org.exploit.tss.frost

t-schnorr contains the curve-independent FROST core: contexts, commitment preprocessing, partial signature computation, and signature aggregation. Curve specific schemes live in the nested modules.

Primary API

Area	Types
Client	FrostClient
Context	FrostContext, CryptoContext, CommitmentContext, SignatureAggregatorContext
In-memory contexts	InMemoryCryptoContext, InMemoryCommitmentContext, InMemorySignatureAggregatorContext
Preprocessing	FrostPreProcessor, CommitmentPair, ParticipantCommitment
Signing	FrostPartialSignatureClient, SignaturePartAggregator
Schemes	FrostScheme, AbstractFrostScheme, FrostCipherSuite
Utilities	Polynomials, Sum, Endian, FrostPreProcessorSupport

Usage

dependencies {
    implementation platform("org.exploit.anvil:bom:0.1.0")
    implementation "org.exploit.anvil:t-schnorr"
    implementation "org.exploit.anvil:frost-secp256k1"
}

import org.exploit.tss.frost.FrostClient;
import org.exploit.tss.frost.secp256k1.FrostSecp256k1Scheme;

var client = new FrostClient<>(
    sessionId,
    frostContext,
    new FrostSecp256k1Scheme()
);

var commitment = client.preProcessor().generateCommitment(opId);
client.signature().storeCommitment(peerId, opId, peerCommitment);
var z = client.signature().computeZ(opId);
client.aggregator().storeZ(peerId, opId, z);
var signature = client.aggregator().computeSignature(opId);

Context Model

The core module does not own networking or durable storage. Protocol messages are represented as Java values and stored through context interfaces. The provided in-memory contexts are useful for local sessions and tests. Other integrations can implement the same interfaces against their own transport and state layer.

Curve Modules

Use one of the curve-specific modules for concrete signature construction:

org.exploit.anvil:frost-ed25519
org.exploit.anvil:frost-secp256k1
org.exploit.anvil:frost-p256