EASY-CRC

A pure JavaScript and zero dependencies cyclic redundancy check (CRC) node module.
It supports crc8, crc16 and crc32.

Installation

npm install --save easy-crc

Usage

There are three functions available respectively named crc8(), crc16() and crc32(). These functions take three arguments.
The first argument is a string with the name of the desired algorithm (below the list), and the second is the data on which you want to calculate crc. Data can be a string or a buffer.
The third parameter is the CRC seed and is optional.

const { crc8, crc16, crc32 } = require('easy-crc');

// CRC8
let data = '12345';
let checksum = crc8('CRC-8', data);

console.log(checksum.toString(16));// "cb"

// CRC16
data = Buffer.from([0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39]);
checksum = crc16('CCITT-FALSE', data);

console.log(checksum.toString(16));// "7d61"

// CRC32
data = 'Hello!';
checksum = crc32('CRC-32', data);

console.log(checksum.toString(16));// "9d2acc56"

Available algorithms

The follow algorithm names can be passed as first argument of respective crc8(), crc16() and crc32() methods.

CRC8

• CRC-8
• CDMA2000
• DARC
• DVB-S2
• EBU
• I-CODE
• ITU
• MAXIM
• ROHC
• WCDMA

CRC16

• BUYPASS
• CCITT-FALSE
• ~~AUG-CCITT~~ not working at moment.
• ARC
• CDMA2000
• DDS-110
• DECT-R
• DECT-X
• DNP
• EN-13757
• GENIBUS
• MAXIM
• KERMIT
• MCRF4XX
• MODBUS
• RIELLO
• T10-DIF
• TELEDISK
• TMS37157
• USB
• X-25
• XMODEM
• CRC-A

CRC32

• CRC-32
• CRC-32C
• CRC-32D
• CRC-32Q
• BZIP2
• JAMCRC
• MPEG-2
• POSIX
• XFER

Running tests

npm test