add proper bls exports
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@ -33,6 +33,7 @@
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"coverage": "codecov -F bls"
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},
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"dependencies": {
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"@chainsafe/eth2.0-types": "^0.1.0",
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"@chainsafe/milagro-crypto-js": "0.1.3",
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"assert": "^1.4.1",
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"js-sha256": "^0.9.0",
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@ -1,5 +0,0 @@
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declare module 'keccak256' {
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export default function hash(a: Buffer | (Buffer | string | number)[]): Buffer;
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}
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@ -1,11 +1,11 @@
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import {BIG} from "@chainsafe/milagro-crypto-js/src/big";
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import {ECP} from "@chainsafe/milagro-crypto-js/src/ecp";
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import ctx from "../ctx";
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import {bytes48} from "../types";
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import assert from "assert";
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import {calculateYFlag, getModulus} from "./utils";
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import * as random from "secure-random";
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import {FP_POINT_LENGTH} from "../constants";
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import {bytes48} from "@chainsafe/eth2.0-types";
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export class G1point {
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@ -1,12 +1,12 @@
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import {BIG} from "@chainsafe/milagro-crypto-js/src/big";
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import {ECP2} from "@chainsafe/milagro-crypto-js/src/ecp2";
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import {BLSDomain, bytes32, bytes96} from "../types";
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import { sha256 } from 'js-sha256';
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import ctx from "../ctx";
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import * as random from "secure-random";
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import {calculateYFlag, getModulus, padLeft} from "./utils";
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import assert from "assert";
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import {FP_POINT_LENGTH, G2_HASH_PADDING} from "../constants";
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import {bytes32, bytes48, Domain} from "@chainsafe/eth2.0-types";
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export class G2point {
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@ -37,7 +37,7 @@ export class G2point {
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return this.point;
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}
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public toBytesCompressed(): Buffer {
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public toBytesCompressed(): bytes48 {
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const xReBytes = Buffer.alloc(FP_POINT_LENGTH, 0);
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const xImBytes = Buffer.alloc(FP_POINT_LENGTH, 0);
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this.point.getX().getA().tobytearray(xReBytes, 0);
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@ -58,7 +58,7 @@ export class G2point {
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]);
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}
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public static hashToG2(message: bytes32, domain: BLSDomain): G2point {
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public static hashToG2(message: bytes32, domain: Domain): G2point {
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const padding = Buffer.alloc(G2_HASH_PADDING, 0);
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const xReBytes = Buffer.concat([
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padding,
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@ -94,7 +94,7 @@ export class G2point {
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return new G2point(G2point.scaleWithCofactor(G2point.normaliseY(point)));
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}
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public static fromCompressedBytes(value: bytes96): G2point {
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public static fromCompressedBytes(value: bytes48): G2point {
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assert(value.length === 2 * FP_POINT_LENGTH, 'Expected signature of 96 bytes');
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value = Buffer.from(value);
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const xImBytes = value.slice(0, FP_POINT_LENGTH);
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31
src/index.ts
31
src/index.ts
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@ -1,11 +1,3 @@
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import {
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BLSDomain,
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BLSSecretKey,
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BLSPubkey,
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BLSSignature,
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bytes32,
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bytes8
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} from "./types";
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import {Keypair} from "./keypair";
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import {PrivateKey} from "./privateKey";
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import {G2point} from "./helpers/g2point";
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@ -14,11 +6,14 @@ import {PublicKey} from "./publicKey";
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import {Signature} from "./signature";
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import {ElipticCurvePairing} from "./helpers/ec-pairing";
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import ctx from "./ctx";
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import {BLSPubkey, BLSSecretKey, BLSSignature, bytes32, Domain} from "@chainsafe/eth2.0-types";
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export {Keypair, PrivateKey, PublicKey, Signature};
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/**
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* Generates new secret and public key
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*/
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function generateKeyPair(): Keypair {
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export function generateKeyPair(): Keypair {
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return Keypair.generate();
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}
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@ -26,7 +21,7 @@ function generateKeyPair(): Keypair {
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* Generates public key from given secret.
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* @param {BLSSecretKey} secretKey
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*/
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function generatePublicKey(secretKey: BLSSecretKey): BLSPubkey {
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export function generatePublicKey(secretKey: BLSSecretKey): BLSPubkey {
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const keypair = new Keypair(PrivateKey.fromBytes(secretKey));
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return keypair.publicKey.toBytesCompressed();
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}
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@ -37,7 +32,7 @@ function generatePublicKey(secretKey: BLSSecretKey): BLSPubkey {
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* @param messageHash
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* @param domain
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*/
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function sign(secretKey: BLSSecretKey, messageHash: bytes32, domain: BLSDomain): BLSSignature {
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export function sign(secretKey: BLSSecretKey, messageHash: bytes32, domain: Domain): BLSSignature {
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const privateKey = PrivateKey.fromBytes(secretKey);
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const hash = G2point.hashToG2(messageHash, domain);
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return privateKey.sign(hash).toBytesCompressed();
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@ -47,9 +42,9 @@ function sign(secretKey: BLSSecretKey, messageHash: bytes32, domain: BLSDomain):
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* Compines all given signature into one.
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* @param signatures
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*/
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function aggregateSignatures(signatures: BLSSignature[]): BLSSignature {
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export function aggregateSignatures(signatures: BLSSignature[]): BLSSignature {
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return signatures.map((signature): Signature => {
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return Signature.fromCompressedBytes(signature)
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return Signature.fromCompressedBytes(signature);
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}).reduce((previousValue, currentValue): Signature => {
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return previousValue.add(currentValue);
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}).toBytesCompressed();
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@ -59,12 +54,12 @@ function aggregateSignatures(signatures: BLSSignature[]): BLSSignature {
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* Combines all given public keys into single one
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* @param publicKeys
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*/
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function aggregatePubkeys(publicKeys: BLSPubkey[]): BLSPubkey {
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export function aggregatePubkeys(publicKeys: BLSPubkey[]): BLSPubkey {
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if(publicKeys.length === 0) {
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return new G1point(new ctx.ECP()).toBytesCompressed();
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}
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return publicKeys.map((publicKey): G1point => {
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return G1point.fromBytesCompressed(publicKey)
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return G1point.fromBytesCompressed(publicKey);
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}).reduce((previousValue, currentValue): G1point => {
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return previousValue.add(currentValue);
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}).toBytesCompressed();
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@ -77,7 +72,7 @@ function aggregatePubkeys(publicKeys: BLSPubkey[]): BLSPubkey {
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* @param signature
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* @param domain
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*/
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function verify(publicKey: BLSPubkey, messageHash: bytes32, signature: BLSSignature, domain: bytes8): boolean {
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export function verify(publicKey: BLSPubkey, messageHash: bytes32, signature: BLSSignature, domain: Domain): boolean {
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try {
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const key = PublicKey.fromBytes(publicKey);
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const sig = Signature.fromCompressedBytes(signature);
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@ -98,7 +93,7 @@ function verify(publicKey: BLSPubkey, messageHash: bytes32, signature: BLSSignat
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* @param signature
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* @param domain
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*/
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function verifyMultiple(publicKeys: BLSPubkey[], messageHashes: bytes32[], signature: BLSSignature, domain: bytes8): boolean {
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export function verifyMultiple(publicKeys: BLSPubkey[], messageHashes: bytes32[], signature: BLSSignature, domain: Domain): boolean {
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if(publicKeys.length === 0 || publicKeys.length != messageHashes.length) {
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return false;
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}
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@ -129,4 +124,4 @@ export default {
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aggregatePubkeys,
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verify,
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verifyMultiple
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}
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};
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@ -5,7 +5,7 @@ import ctx from "./ctx";
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import {padLeft} from "./helpers/utils";
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import {G2point} from "./helpers/g2point";
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import * as random from "secure-random";
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import {BLSDomain, BLSSecretKey, bytes32} from "./types";
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import {BLSSecretKey, bytes32, Domain} from "@chainsafe/eth2.0-types";
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export class PrivateKey {
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@ -23,7 +23,7 @@ export class PrivateKey {
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return message.mul(this.value);
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}
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public signMessage(message: bytes32, domain: BLSDomain): G2point {
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public signMessage(message: bytes32, domain: Domain): G2point {
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return G2point.hashToG2(message, domain).mul(this.value);
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}
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@ -1,6 +1,6 @@
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import {G1point} from "./helpers/g1point";
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import {PrivateKey} from "./privateKey";
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import {BLSPubkey} from "./types";
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import {BLSPubkey} from "@chainsafe/eth2.0-types";
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export class PublicKey {
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@ -1,7 +1,7 @@
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import {G2point} from "./helpers/g2point";
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import {BLSSignature} from "./types";
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import assert from "assert";
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import {FP_POINT_LENGTH} from "./constants";
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import {BLSSignature} from "@chainsafe/eth2.0-types";
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export class Signature {
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@ -1,9 +0,0 @@
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export type bytes8 = Buffer;
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export type bytes32 = Buffer;
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export type bytes48 = Buffer;
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export type bytes96 = Buffer;
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export type BLSDomain = bytes8;
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export type BLSPubkey = bytes48;
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export type BLSSecretKey = bytes32;
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export type BLSSignature = bytes96;
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