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fix problem with zeroPad

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Sasha 2023-12-01 13:49:40 +01:00
parent 87d4c6fc05
commit fc63064670
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3 changed files with 17 additions and 1 deletions
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1
example/package-lock.json generated
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@ -19,6 +19,7 @@
}
},
"..": {
"name": "@waku/rln",
"version": "0.1.1",
"license": "MIT OR Apache-2.0",
"dependencies": {

14
src/byte_utils.ts
View File

@ -47,3 +47,17 @@ export function buildBigIntFromUint8Array(array: Uint8Array): bigint {
const dataView = new DataView(array.buffer);
return dataView.getBigUint64(0, true);
}
/**
* Fills with zeros to set length
* @param array little endian Uint8Array
* @param length amount to pad
* @returns little endian Uint8Array padded with zeros to set length
*/
export function zeroPadLE(array: Uint8Array, length: number): Uint8Array {
const result = new Uint8Array(length);
for (let i = 0; i < length; i++) {
result[i] = array[i] || 0;
}
return result;
}

3
src/rln_contract.ts
View File

@ -1,6 +1,7 @@
import { hexToBytes } from "@waku/utils/bytes";
import { ethers } from "ethers";
import { zeroPadLE } from "./byte_utils.js";
import { RLN_REGISTRY_ABI, RLN_STORAGE_ABI } from "./constants.js";
import { IdentityCredential, RLNInstance } from "./rln.js";
import { MerkleRootTracker } from "./root_tracker.js";
@ -170,7 +171,7 @@ export class RLNContract {
return;
}
const idCommitment = hexToBytes(_idCommitment?._hex);
const idCommitment = zeroPadLE(hexToBytes(_idCommitment?._hex), 32);
rlnInstance.insertMember(idCommitment);
this._members.set(index.toNumber(), {
index,