How to use the crc16 function from crc

index.js

GitHub: robertklep/node-dsmr-parser

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  this.objects    = this.parseObjects(match[2]);
};


Telegram.prototype.checksum = function() {
  var data = this.telegram.match(patterns.CHECKSUM)[1];
  return ('0000' + crc.crc16(data).toString(16)).slice(-4).toUpperCase();
}


Telegram.prototype.parseObjects = function(data) {
  // Extract objects.

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hash_crc16-demo.js

GitHub: jiajianrong/documents

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for (let i=0; i<100000; i++) {
	var md5 = crypto.createHash('md5');
	var key = 'taskid_'+i;
	md5.update(key);
	let result = md5.digest('hex');
	let num = crc.crc16(result);
	numArr.push(num);
}

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LDAPClient.js

GitHub: AyuthPrasarnwong/wolf

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const { crc16, crc32 } = require('crc')
const config = require('../../conf/config')


function crc48(value) {
  const buf = Buffer.from(value)
  const crc48hex = crc32(buf).toString(16) + crc16(buf).toString(16)
  const crc48value = BigInt('0x' + crc48hex)
  return crc48value
}

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+ 2 other calls in file

gps.js

GitHub: Guimoye/teltonika_gps

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socket.avl_data_array_length = buf.readUInt32BE(0);
if (data.length == socket.avl_data_array_length + 12){
    // The amount of data is correct
    var avl_packet_crc = new Buffer(4);
    avl_packet_crc = data.slice(-4);
    var calc_crc = crc.crc16(data.slice(8,-4));
    var acknowledges = new Buffer(4);
    if (avl_packet_crc.readUInt32BE(0) == calc_crc) {
        // CRC correct
        data = data.slice(8,-4);

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+ 2 other calls in file