sha

What is sha?

The 'sha' npm package is used for generating SHA (Secure Hash Algorithm) hashes. It supports various SHA algorithms like SHA-1, SHA-256, SHA-384, and SHA-512. This package is useful for creating cryptographic hashes of data, which can be used for data integrity checks, password hashing, and more.

What are sha's main functionalities?

Generate SHA-1 Hash

This feature allows you to generate a SHA-1 hash of a given input string. The code sample demonstrates how to create a SHA-1 hash of the string 'Hello World' and output it in hexadecimal format.

const sha = require('sha');
const hash = sha('sha1').update('Hello World').digest('hex');
console.log(hash);

Generate SHA-256 Hash

This feature allows you to generate a SHA-256 hash of a given input string. The code sample demonstrates how to create a SHA-256 hash of the string 'Hello World' and output it in hexadecimal format.

const sha = require('sha');
const hash = sha('sha256').update('Hello World').digest('hex');
console.log(hash);

Generate SHA-384 Hash

This feature allows you to generate a SHA-384 hash of a given input string. The code sample demonstrates how to create a SHA-384 hash of the string 'Hello World' and output it in hexadecimal format.

const sha = require('sha');
const hash = sha('sha384').update('Hello World').digest('hex');
console.log(hash);

Generate SHA-512 Hash

This feature allows you to generate a SHA-512 hash of a given input string. The code sample demonstrates how to create a SHA-512 hash of the string 'Hello World' and output it in hexadecimal format.

const sha = require('sha');
const hash = sha('sha512').update('Hello World').digest('hex');
console.log(hash);

Other packages similar to sha

crypto

The 'crypto' module is a built-in Node.js module that provides cryptographic functionality, including a set of wrappers for OpenSSL's hash, HMAC, cipher, decipher, sign, and verify functions. It is more comprehensive and versatile compared to 'sha', supporting a wider range of cryptographic operations.

hash.js

The 'hash.js' package is a JavaScript library that provides a simple way to create hash digests of data. It supports various hash algorithms including SHA-1, SHA-256, SHA-384, and SHA-512. It is similar to 'sha' but offers a more modular approach and additional features like HMAC.

js-sha256

The 'js-sha256' package is a JavaScript implementation of the SHA-256 hash function. It is lightweight and fast, making it suitable for client-side applications. Unlike 'sha', it focuses solely on SHA-256, providing a highly optimized implementation for this specific algorithm.

README

sha

Check and get file hashes (using any algorithm)

Installation

$ npm install sha

API

check(fileName, expected, [options,] cb) / checkSync(filename, expected, [options])

Asynchronously check that fileName has a "hash" of expected. The callback will be called with either null or an error (indicating that they did not match).

Options:

• algorithm: defaults to sha1 and can be any of the algorithms supported by crypto.createHash

get(fileName, [options,] cb) / getSync(filename, [options])

Asynchronously get the "hash" of fileName. The callback will be called with an optional error object and the (lower cased) hex digest of the hash.

Options:

• algorithm: defaults to sha1 and can be any of the algorithms supported by crypto.createHash

stream(expected, [options])

Check the hash of a stream without ever buffering it. This is a pass through stream so you can do things like:

fs.createReadStream('src')
  .pipe(sha.stream('expected'))
  .pipe(fs.createWriteStream('dest'))

dest will be a complete copy of src and an error will be emitted if the hash did not match 'expected'.

Options:

• algorithm: defaults to sha1 and can be any of the algorithms supported by crypto.createHash

License

You may use this software under the BSD or MIT. Take your pick. If you want me to release it under another license, open a pull request.