bcryptjs 2.4.3

bcryptjs is a potent npm package that allows developers to hash passwords effectively. It applies the bcrypt algorithm in plain JavaScript with zero dependencies. This library is primarily applied in password hashing, a crucial step in storing user passwords securely, as it provides protection against rainbow table attacks and remains resistant to brute-force search attacks. bcryptjs is compatible with C++ bcrypt binding on node.js and works just as effectively in a browser. However, it's noteworthy that being written in pure JavaScript, it is generally slower than its C++ counterpart, reducing the number of iterations processed in an equal time span.

bcryptjs offers a straightforward utilization process. To employ it in a node.js environment, install it using the recommended npm command, npm install bcryptjs, and later require the bcryptjs library in your JavaScript file.

After that, use it like this:

var bcrypt = require('bcryptjs');
var salt = bcrypt.genSaltSync(10);
var hash = bcrypt.hashSync("B4c0/\/", salt);

Above, we've generated a password hash. To validate a password, load the hash from your password database and use it in comparison like this:

// Load hash from your password DB.
bcrypt.compareSync("B4c0/\/", hash); // returns true if passwords match
bcrypt.compareSync("not_bacon", hash); // returns false if passwords do not match

For automatic salt generation and hashing:

var hash = bcrypt.hashSync('bacon', 8);

The library also provides an asynchronous way of hashing and checking passwords:

var bcrypt = require('bcryptjs');
bcrypt.genSalt(10, function(err, salt) {
    bcrypt.hash("B4c0/\/", salt, function(err, hash) {
        // Store hash in your password DB.
    });
});

Verifying password:

// Load hash from your password DB.
bcrypt.compare("B4c0/\/", hash, function(err, res) {
    // res === true if passwords match
});
bcrypt.compare("not_bacon", hash, function(err, res) {
    // res === false if passwords do not match
});

The detailed documentation on bcryptjs, encompassing its methods, parameters, and functionalities, is available directly on the bcryptjs GitHub page at https://github.com/dcodeIO/bcrypt.js. It provides a thorough walkthrough on both synchronous and asynchronous usage, including real-time examples and method explanations. For instance, globalfunctions such as genSaltSync(), hashSync(), and compareSync() are given broad explanations on the docs page. Plus, the bcryptjs GitHub page is continuously updated, meaning developers can stay updated on any new changes and usage instructions.