crc32-stream

CRC32 Stream

crc32-stream is a streaming CRC32 checksumer. It uses the crc module behind the scenes to reliably handle binary data and fancy character sets. Data is passed through untouched.

Install

npm install crc32-stream --save

You can also use npm install https://github.com/archiverjs/node-crc32-stream/archive/master.tar.gz to test upcoming versions.

Usage

CRC32Stream

Inherits Transform Stream options and methods.

import { CRC32Stream } from "crc32-stream";

const source = fs.createReadStream("file.txt");
const checksum = new CRC32Stream();

checksum.on("end", function (err) {
  // do something with checksum.digest() here
});

// either pipe it
source.pipe(checksum);

// or write it
checksum.write("string");
checksum.end();

DeflateCRC32Stream

Inherits zlib.DeflateRaw options and methods.

import { DeflateCRC32Stream } from "crc32-stream";

const source = fs.createReadStream("file.txt");
const checksum = new DeflateCRC32Stream();

checksum.on("end", function (err) {
  // do something with checksum.digest() here
});

// either pipe it
source.pipe(checksum);

// or write it
checksum.write("string");
checksum.end();

Instance API

digest()

Returns the checksum digest in unsigned form.

hex()

Returns the hexadecimal representation of the checksum digest. (ie E81722F0)

size(compressed)

Returns the raw size/length of passed-through data.

If compressed is true, it returns compressed length instead. (DeflateCRC32Stream)

Things of Interest

• Changelog
• Contributing
• MIT License

Similar packages

Other packages similar to crc32-stream

crc

The 'crc' package offers a collection of CRC (Cyclic Redundancy Check) algorithms for strings and buffers. Unlike crc32-stream, which is stream-focused, 'crc' provides a more general approach to CRC calculation, supporting various CRC algorithms but without native stream support.

hash-stream-validation

This package is designed to validate streams using various hash algorithms, including CRC32. It is similar to crc32-stream in its stream-oriented approach but offers more flexibility by supporting additional hash algorithms like MD5 and SHA-1.