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[BLS] function arguments

This commit is contained in:
ayush.kaul 2020-01-08 12:19:51 +05:30
parent 315bf03aaa
commit 529b36d4d4
1 changed files with 16 additions and 0 deletions
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16
src/index.ts
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@ -4,6 +4,7 @@ import {PublicKey} from "./publicKey";
import {Signature} from "./signature";
import {BLSPubkey, BLSSecretKey, BLSSignature, Domain, Hash} from "@chainsafe/eth2.0-types";
import {PUBLIC_KEY_LENGTH} from "./constants";
import assert from "assert";
export {Keypair, PrivateKey, PublicKey, Signature};
@ -21,6 +22,7 @@ export function generateKeyPair(): Keypair {
* @param {BLSSecretKey} secretKey
*/
export function generatePublicKey(secretKey: BLSSecretKey): BLSPubkey {
assert(secretKey, "secretKey is null or undefined");
const keypair = new Keypair(PrivateKey.fromBytes(secretKey));
return keypair.publicKey.toBytesCompressed();
}
@ -32,6 +34,9 @@ export function generatePublicKey(secretKey: BLSSecretKey): BLSPubkey {
* @param domain
*/
export function sign(secretKey: BLSSecretKey, messageHash: Hash, domain: Domain): BLSSignature {
assert(secretKey, "secretKey is null or undefined");
assert(messageHash, "messageHash is null or undefined");
assert(domain, "domain is null or undefined");
const privateKey = PrivateKey.fromBytes(secretKey);
return privateKey.signMessage(messageHash, domain).toBytesCompressed();
}
@ -41,6 +46,7 @@ export function sign(secretKey: BLSSecretKey, messageHash: Hash, domain: Domain)
* @param signatures
*/
export function aggregateSignatures(signatures: BLSSignature[]): BLSSignature {
assert(signatures, "signatures is null or undefined");
return signatures.map((signature): Signature => {
return Signature.fromCompressedBytes(signature);
}).reduce((previousValue, currentValue): Signature => {
@ -53,6 +59,7 @@ export function aggregateSignatures(signatures: BLSSignature[]): BLSSignature {
* @param publicKeys
*/
export function aggregatePubkeys(publicKeys: BLSPubkey[]): BLSPubkey {
assert(publicKeys, "publicKeys is null or undefined");
if(publicKeys.length === 0) {
return Buffer.alloc(PUBLIC_KEY_LENGTH);
}
@ -74,6 +81,10 @@ export function aggregatePubkeys(publicKeys: BLSPubkey[]): BLSPubkey {
* @param domain
*/
export function verify(publicKey: BLSPubkey, messageHash: Hash, signature: BLSSignature, domain: Domain): boolean {
assert(publicKey, "publicKey is null or undefined");
assert(messageHash, "messageHash is null or undefined");
assert(signature, "signature is null or undefined");
assert(domain, "domain is null or undefined");
try {
return PublicKey
.fromBytes(publicKey)
@ -96,6 +107,11 @@ export function verifyMultiple(
signature: BLSSignature,
domain: Domain
): boolean {
assert(publicKey, "publicKey is null or undefined");
assert(messageHash, "messageHash is null or undefined");
assert(signature, "signature is null or undefined");
assert(domain, "domain is null or undefined");
if(publicKeys.length === 0 || publicKeys.length != messageHashes.length) {
return false;
}