@chainsafe/libp2p-gossipsub/dist/src/utils/msgIdFn.js

A typescript implementation of gossipsub

import { msgId } from '@libp2p/pubsub/utils';
import { sha256 } from 'multiformats/hashes/sha2';
/**
 * Generate a message id, based on the `key` and `seqno`
 */
export function msgIdFnStrictSign(msg) {
    if (msg.type !== 'signed') {
        throw new Error('expected signed message type');
    }
    // Should never happen
    if (msg.sequenceNumber == null)
        throw Error('missing seqno field');
    // TODO: Should use .from here or key?
    return msgId(msg.from.publicKey ?? msg.key, msg.sequenceNumber);
}
/**
 * Generate a message id, based on message `data`
 */
export async function msgIdFnStrictNoSign(msg) {
    return sha256.encode(msg.data);
}
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