@aws-crypto/crc32

What is @aws-crypto/crc32?

The @aws-crypto/crc32 package is a JavaScript implementation of the CRC32 algorithm, which is used to compute a cyclic redundancy check (CRC) value for a given input. This is useful for error-checking and ensuring the integrity of data.

What are @aws-crypto/crc32's main functionalities?

Calculate CRC32 checksum

This feature allows you to calculate the CRC32 checksum of a given input buffer. The input is a Uint8Array, and the output is a number representing the CRC32 checksum.

const { crc32 } = require('@aws-crypto/crc32');
const checksum = crc32(new Uint8Array([0x00, 0x01, 0x02]));
console.log(checksum);

Other packages similar to @aws-crypto/crc32

buffer-crc32

The buffer-crc32 package is another npm package that provides a similar functionality to @aws-crypto/crc32. It allows for the calculation of CRC32 checksums for buffers. It is a simple and fast implementation, but it is not maintained by a major organization like AWS.

crc

The crc package is a more comprehensive package for calculating CRC checksums. It supports various CRC algorithms, including CRC32. It offers a wider range of functionality compared to @aws-crypto/crc32, which is focused solely on CRC32.

README

@aws-crypto/crc32

Pure JS implementation of CRC32 https://en.wikipedia.org/wiki/Cyclic_redundancy_check

Usage

import { Crc32 } from '@aws-crypto/crc32';

const crc32Digest = (new Crc32).update(buffer).digest()

Test

npm test

Changelog

5.2.0 (2023-10-16)

Features

• support ESM artifacts in all packages (#752) (e930ffb)