2020-11-19 13:22:41 +00:00
|
|
|
import assert from "assert";
|
|
|
|
import {Keypair} from "./keypair";
|
|
|
|
import {PrivateKey} from "./privateKey";
|
|
|
|
import {PublicKey} from "./publicKey";
|
|
|
|
import {Signature} from "./signature";
|
|
|
|
import {toBuffer} from "../helpers/utils";
|
2020-11-20 19:03:17 +00:00
|
|
|
import {IBls} from "../interface";
|
2020-11-19 13:22:41 +00:00
|
|
|
export * from "../constants";
|
|
|
|
|
|
|
|
export {Keypair, PrivateKey, PublicKey, Signature};
|
|
|
|
|
2020-11-20 12:27:30 +00:00
|
|
|
export async function initBLS(): Promise<void> {
|
2020-11-19 13:22:41 +00:00
|
|
|
// Native bindings require no init() call
|
|
|
|
}
|
2020-11-20 12:27:30 +00:00
|
|
|
export function destroy(): void {
|
2020-11-19 13:22:41 +00:00
|
|
|
// Native bindings require no destroy() call
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Signs given message using secret key.
|
|
|
|
* @param secretKey
|
|
|
|
* @param messageHash
|
|
|
|
*/
|
|
|
|
export function sign(secretKey: Uint8Array, messageHash: Uint8Array): Buffer {
|
|
|
|
assert(secretKey, "secretKey is null or undefined");
|
|
|
|
assert(messageHash, "messageHash is null or undefined");
|
|
|
|
const privateKey = PrivateKey.fromBytes(toBuffer(secretKey));
|
|
|
|
return privateKey.signMessage(toBuffer(messageHash)).toBytes();
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Compines all given signature into one.
|
|
|
|
* @param signatures
|
|
|
|
*/
|
|
|
|
export function aggregateSignatures(signatures: Uint8Array[]): Buffer {
|
|
|
|
const agg = Signature.aggregate(signatures.map((p) => Signature.fromBytes(p)));
|
|
|
|
return agg.toBytes();
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Combines all given public keys into single one
|
|
|
|
* @param publicKeys
|
|
|
|
*/
|
|
|
|
export function aggregatePubkeys(publicKeys: Uint8Array[]): Buffer {
|
|
|
|
const agg = PublicKey.aggregate(publicKeys.map((p) => PublicKey.fromBytes(p)));
|
|
|
|
return agg.toBytes();
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Verifies if signature is message signed with given public key.
|
|
|
|
* @param publicKey
|
|
|
|
* @param messageHash
|
|
|
|
* @param signature
|
|
|
|
*/
|
|
|
|
export function verify(publicKey: Uint8Array, messageHash: Uint8Array, signature: Uint8Array): boolean {
|
|
|
|
assert(publicKey, "publicKey is null or undefined");
|
|
|
|
assert(messageHash, "messageHash is null or undefined");
|
|
|
|
assert(signature, "signature is null or undefined");
|
|
|
|
try {
|
|
|
|
return PublicKey.fromBytes(publicKey).verifyMessage(
|
|
|
|
Signature.fromBytes(toBuffer(signature)),
|
|
|
|
toBuffer(messageHash)
|
|
|
|
);
|
|
|
|
} catch (e) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Verifies if aggregated signature is same message signed with given public keys.
|
|
|
|
* @param publicKeys
|
|
|
|
* @param messageHash
|
|
|
|
* @param signature
|
|
|
|
*/
|
|
|
|
export function verifyAggregate(publicKeys: Uint8Array[], messageHash: Uint8Array, signature: Uint8Array): boolean {
|
|
|
|
assert(publicKeys, "publicKey is null or undefined");
|
|
|
|
assert(messageHash, "messageHash is null or undefined");
|
|
|
|
assert(signature, "signature is null or undefined");
|
|
|
|
try {
|
|
|
|
return Signature.fromBytes(signature).verifyAggregate(
|
|
|
|
publicKeys.map((pubkey) => PublicKey.fromBytes(pubkey)),
|
|
|
|
messageHash
|
|
|
|
);
|
|
|
|
} catch (e) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Verifies if signature is list of message signed with corresponding public key.
|
|
|
|
* @param publicKeys
|
|
|
|
* @param messageHashes
|
|
|
|
* @param signature
|
|
|
|
* @param fast Check if all messages are different
|
|
|
|
*/
|
|
|
|
export function verifyMultiple(publicKeys: Uint8Array[], messageHashes: Uint8Array[], signature: Uint8Array): boolean {
|
|
|
|
assert(publicKeys, "publicKey is null or undefined");
|
|
|
|
assert(messageHashes, "messageHash is null or undefined");
|
|
|
|
assert(signature, "signature is null or undefined");
|
|
|
|
|
|
|
|
if (publicKeys.length === 0 || publicKeys.length != messageHashes.length) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
try {
|
|
|
|
return Signature.fromBytes(toBuffer(signature)).verifyMultiple(
|
|
|
|
publicKeys.map((key) => PublicKey.fromBytes(toBuffer(key))),
|
|
|
|
messageHashes.map((m) => toBuffer(m))
|
|
|
|
);
|
|
|
|
} catch (e) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-11-20 19:03:17 +00:00
|
|
|
const bls: IBls = {
|
2020-11-19 13:22:41 +00:00
|
|
|
sign,
|
|
|
|
aggregateSignatures,
|
|
|
|
aggregatePubkeys,
|
|
|
|
verify,
|
|
|
|
verifyAggregate,
|
|
|
|
verifyMultiple,
|
|
|
|
|
2020-11-20 19:03:17 +00:00
|
|
|
// Keypair,
|
2020-11-19 13:22:41 +00:00
|
|
|
PrivateKey,
|
|
|
|
PublicKey,
|
|
|
|
Signature,
|
|
|
|
initBLS,
|
|
|
|
destroy,
|
|
|
|
};
|
2020-11-20 19:03:17 +00:00
|
|
|
|
|
|
|
export default bls;
|