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https://github.com/logos-messaging/js-waku.git
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51f9261a16
* update to latest prettier * fix with prettier: added trailing comma * remove deps from test package, add sinon types, fix type hack in a test, update esling prettier config * update typescript eslint plugins * update package-locks
30 lines
782 B
TypeScript
30 lines
782 B
TypeScript
import { sha256 } from "@noble/hashes/sha256";
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import type { IProtoMessage } from "@waku/interfaces";
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import { concat, utf8ToBytes } from "@waku/utils/bytes";
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/**
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* Deterministic Message Hashing as defined in
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* [14/WAKU2-MESSAGE](https://rfc.vac.dev/spec/14/#deterministic-message-hashing)
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*/
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export function messageHash(
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pubsubTopic: string,
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message: IProtoMessage,
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): Uint8Array {
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const pubsubTopicBytes = utf8ToBytes(pubsubTopic);
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const contentTopicBytes = utf8ToBytes(message.contentTopic);
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let bytes;
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if (message.meta) {
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bytes = concat([
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pubsubTopicBytes,
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message.payload,
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contentTopicBytes,
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message.meta,
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]);
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} else {
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bytes = concat([pubsubTopicBytes, message.payload, contentTopicBytes]);
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}
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return sha256(bytes);
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}
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