mirror of
https://github.com/logos-messaging/logos-messaging-js.git
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87717981eb
* chore: update noise * update: package.lock * update: @chainsafe/libp2p-gossipsub * rm unwanted libp2p interface deps & bump up libp2p * refactor code for new deps * update: new package.lock * setup prettier, refactor eslint and rm trailing commas * update package.lock * fix build * import type for interface * fix imports for merge * update typedoc exports * add: CustomEvent import * use new libp2p interface * add aegir as dev dep for tests
30 lines
780 B
TypeScript
30 lines
780 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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