crc-32

What is crc-32?

The crc-32 npm package is a JavaScript library for calculating CRC32 checksums. CRC32 is a checksum algorithm that generates a 32-bit hash of data, which can be used to verify the integrity of data during transmission or storage. This package provides functions to compute CRC32 checksums for strings and byte arrays.

What are crc-32's main functionalities?

CRC32 checksum from a string

This feature allows you to compute the CRC32 checksum of a given string. The 'crc32.str' function takes a string as input and returns the checksum as a signed 32-bit integer.

"use strict";
var crc32 = require('crc-32');
var str = 'Hello World';
var checksum = crc32.str(str);
console.log('Checksum for string:', checksum);

CRC32 checksum from a byte array

This feature allows you to compute the CRC32 checksum of a byte array. The 'crc32.buf' function takes a byte array (Uint8Array) as input and returns the checksum as a signed 32-bit integer.

"use strict";
var crc32 = require('crc-32');
var buf = new Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100]);
var checksum = crc32.buf(buf);
console.log('Checksum for byte array:', checksum);

Other packages similar to crc-32

crc

The 'crc' npm package is similar to 'crc-32' and provides CRC checksum calculation for multiple CRC algorithms, including CRC32. It offers a wider range of CRC algorithms compared to 'crc-32', which is focused solely on CRC32.

buffer-crc32

The 'buffer-crc32' npm package is another alternative that provides CRC32 checksum calculation. It is designed to work with Node.js buffers and can be used to append the checksum to the buffer. It is similar to 'crc-32' but with a focus on Node.js buffer compatibility.