bcrypt

Why BCryptPasswordEncoder from Spring generate different outputs for same input?

public static void main(String[] args) { // spring 4.0.0 org.springframework.security.crypto.password.PasswordEncoder encoder = new org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder(); // $2a$10$lB6/PKg2/JC4XgdMDXyjs.dLC9jFNAuuNbFkL9udcXe/EBjxSyqxW // true // $2a$10$KbQiHKTa1WIsQFTQWQKCiujoTJJB7MCMSaSgG/imVkKRicMPwgN5i // true // $2a$10$5WfW4uxVb4SIdzcTJI9U7eU4ZwaocrvP.2CKkWJkBDKz1dmCh50J2 // true // $2a$10$0wR/6uaPxU7kGyUIsx/JS.krbAA9429fwsuCyTlEFJG54HgdR10nK // true // $2a$10$gfmnyiTlf8MDmwG7oqKJG.W8rrag8jt6dNW.31ukgr0.quwGujUuO // true for (int i = 0; i < 5; i++) { // “123456” – plain text – user input from user interface … Read more

Cannot install bcrypt node.js module on Centos Server

There is also a native-js version of bcrypt which does not require compiling. https://github.com/shaneGirish/bcrypt-nodejs npm install bcrypt-nodejs The api is very similar to the compiled version. The following is taken directly from the readme Basic usage: Synchronous var hash = bcrypt.hashSync(“bacon”); bcrypt.compareSync(“bacon”, hash); // true bcrypt.compareSync(“veggies”, hash); // false Asynchronous bcrypt.hash(“bacon”, null, null, function(err, hash) … Read more

.net implementation of bcrypt

It sounds like you are looking for BCrypt.net: BCrypt.net is an implementation of OpenBSD’s Blowfish-based password hashing code, described in “A Future-Adaptable Password Scheme” by Niels Provos and David Mazières. It is a direct port of jBCrypt by Damien Miller, and is thus released under the same BSD-style license. The code is fully managed and … Read more

Trying to hash a password using bcrypt inside an async function

await dosent wait for bcrypt.hash because bcrypt.hash does not return a promise. Use the following method, which wraps bcrypt in a promise in order to use await. async function hashPassword (user) { const password = user.password const saltRounds = 10; const hashedPassword = await new Promise((resolve, reject) => { bcrypt.hash(password, saltRounds, function(err, hash) { if … Read more

Can someone explain how BCrypt verifies a hash?

A BCrypt hash string looks like: $2a$10$Ro0CUfOqk6cXEKf3dyaM7OhSCvnwM9s4wIX9JeLapehKK5YdLxKcm \__/\/ \____________________/\_____________________________/ | | Salt Hash | Cost Version Where 2a: Algorithm Identifier (BCrypt, UTF8 encoded password, null terminated) 10: Cost Factor (210 = 1,024 rounds) Ro0CUfOqk6cXEKf3dyaM7O: OpenBSD-Base64 encoded salt (22 characters, 16 bytes) hSCvnwM9s4wIX9JeLapehKK5YdLxKcm: OpenBSD-Base64 encoded hash (31 characters, 24 bytes) Edit: i just noticed these words … Read more

Optimal bcrypt work factor

Remember that the value is stored in the password: $2a$(2 chars work)$(22 chars salt)(31 chars hash). It is not a fixed value. If you find the load is too high, just make it so the next time they log in, you crypt to something faster to compute. Similarly, as time goes on and you get … Read more