@waku/rln/bundle/packages/rln/dist/message.js

RLN (Rate Limiting Nullifier) implementation for Waku

import { Version } from '../../core/dist/lib/message/version_0.js';
import '../../core/dist/lib/filter/filter.js';
import '../../core/dist/lib/light_push/light_push.js';
import '../../core/dist/lib/store/store.js';
import '../../core/dist/lib/connection_manager/connection_manager.js';
import '../../interfaces/dist/protocols.js';
import '../../interfaces/dist/connection_manager.js';
import '../../interfaces/dist/health_status.js';
import { utf8ToBytes } from '../../utils/dist/bytes/index.js';
import '../../../node_modules/debug/src/browser.js';
import '../../core/dist/lib/metadata/metadata.js';
import { epochBytesToInt } from './utils/epoch.js';

function toRLNSignal(contentTopic, msg) {
    const contentTopicBytes = utf8ToBytes(contentTopic ?? "");
    return new Uint8Array([...(msg.payload ?? []), ...contentTopicBytes]);
}
class RlnMessage {
    rlnInstance;
    msg;
    rateLimitProof;
    pubsubTopic = "";
    version = Version;
    constructor(rlnInstance, msg, rateLimitProof) {
        this.rlnInstance = rlnInstance;
        this.msg = msg;
        this.rateLimitProof = rateLimitProof;
    }
    verify(roots) {
        return this.rateLimitProof
            ? this.rlnInstance.zerokit.verifyWithRoots(this.rateLimitProof, toRLNSignal(this.msg.contentTopic, this.msg), roots) // this.rlnInstance.verifyRLNProof once issue status-im/nwaku#1248 is fixed
            : undefined;
    }
    verifyNoRoot() {
        return this.rateLimitProof
            ? this.rlnInstance.zerokit.verifyWithNoRoot(this.rateLimitProof, toRLNSignal(this.msg.contentTopic, this.msg)) // this.rlnInstance.verifyRLNProof once issue status-im/nwaku#1248 is fixed
            : undefined;
    }
    get payload() {
        return this.msg.payload;
    }
    get contentTopic() {
        return this.msg.contentTopic;
    }
    get timestamp() {
        return this.msg.timestamp;
    }
    get ephemeral() {
        return this.msg.ephemeral;
    }
    get meta() {
        return this.msg.meta;
    }
    get epoch() {
        const bytes = this.rateLimitProof?.epoch;
        if (!bytes)
            return undefined;
        return epochBytesToInt(bytes);
    }
}

export { RlnMessage, toRLNSignal };