File to Hash

post label

get hashes checksum from file using NodeJS

BACK

get checksum from file

const crypto = require('crypto');
const fs = require('fs');

/**
 * convert file to hash
 * @param {'sha1' | 'sha256' | 'sha384' | 'sha512', 'md5'} alogarithm
 * @param {string} path
 * @param {import('crypto').BinaryToTextEncoding} encoding
 * @returns
 */
function file_to_hash(alogarithm = 'sha1', path, encoding = 'hex') {
  return new Promise((resolve, reject) => {
    const hash = crypto.createHash(alogarithm);
    const rs = fs.createReadStream(path);
    rs.on('error', reject);
    rs.on('data', (chunk) => hash.update(chunk));
    rs.on('end', () => resolve(hash.digest(encoding)));
  });
}

Usages

file_to_hash('sha512', 'D:/Repositories/release/file.tgz').then(console.log);

Another Snippets