@shard-auth/client/dist/dkg.js

Next-generation API authentication without secret keys - MPC-based authentication with FROST threshold signatures

"use strict";
/**
 * DKG (Distributed Key Generation) インターフェース
 * FROST実装へのラッパー
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.initializeDKG = initializeDKG;
exports.executeDKG = executeDKG;
exports.generatePartialSignature = generatePartialSignature;
exports.combineSignatures = combineSignatures;
const dkg_1 = require("./frost/dkg");
const signature_1 = require("./frost/signature");
const sha256_1 = require("@noble/hashes/sha256");
const simple_signature_1 = require("./simple-signature");
// DKGセッションの初期化
async function initializeDKG(config) {
    return (0, dkg_1.initializeFROSTDKG)(config);
}
// DKGプロトコルの実行
async function executeDKG(session) {
    return (0, dkg_1.executeFROSTDKG)(session);
}
// 部分署名の生成
async function generatePartialSignature(share, message, groupPublicKey) {
    // セッション管理の初期化
    if (share.index === 1) {
        (0, simple_signature_1.initSimpleSignature)();
    }
    (0, simple_signature_1.setShareForSigning)(share);
    // 実際のノンスを生成
    const nonce = (0, signature_1.generateNonce)();
    const nonceCommitment = (0, signature_1.computeNonceCommitment)(nonce);
    // 部分署名の生成（実際の署名はcombineSignaturesで行う）
    return {
        index: share.index,
        signature: Buffer.from((0, sha256_1.sha256)(Buffer.concat([
            Buffer.from([share.index]),
            message
        ]))).slice(0, 32),
        proof: Buffer.from((0, sha256_1.sha256)(Buffer.concat([
            nonceCommitment.hiding,
            nonceCommitment.binding
        ]))),
        nonceCommitment
    };
}
// 署名の結合
async function combineSignatures(partialSignatures, message, groupPublicKey) {
    // 簡略化された実装を使用
    if (!message || !groupPublicKey) {
        throw new Error('Message and public key required for signature');
    }
    return (0, simple_signature_1.createSimpleSignature)(message, groupPublicKey);
}
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