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Informations about the package wp-password-bcrypt

Drop-in bcrypt password hashing for WordPress
Built with ❤️

Supporting

wp-password-bcrypt is an open source project and completely free to use.

Overview

wp-password-bcrypt is a WordPress plugin to replace WP's outdated and insecure MD5-based password hashing with the modern and secure bcrypt.

This plugin requires PHP >= 5.5.0 which introduced the built-in password_hash and password_verify functions.

Requirements

Installation

This plugin is a Composer library so it can be installed in a few ways:

Composer Autoloaded

composer require onepress/wp-password-bcrypt

wp-password-bcrypt.php file will be automatically autoloaded by Composer and it won't appear in your plugins.

Manually as a must-use plugin

If you don't use Composer, you can manually copy wp-password-bcrypt.php into your mu-plugins folder.

We do not recommend using this as a normal (non-mu) plugin. It makes it too easy to disable or remove the plugin.

The Problem

WordPress still uses an MD5 based password hashing scheme. They are effectively making 25% of websites more insecure because they refuse to bump their minimum PHP requirements. By continuing to allow EOL PHP versions back to 5.2, they can't use newer functions like password_hash.

This is a known problem which WordPress has ignored for over 4 years now. Not only does WordPress set the insecure default of MD5, they don't do any of the following:

What's wrong with MD5? Really simply: it's too cheap and fast to generate cryptographically secure hashes.

The Solution

WordPress did at least one good thing: they made wp_check_password and wp_hash_password pluggable functions. This means we can define these functions in a plugin and "override" the default ones.

This plugin plugs in 3 functions:

wp_hash_password

This function is the simplest. This plugin simply calls password_hash instead of WP's default password hasher. The wp_hash_password_options filter is available to set the options that password_hash can accept.

wp_check_password

At its core, this function just calls password_verify instead of the default. However, it also checks if a user's password was previously hashed with the old MD5-based hasher and re-hashes it with bcrypt. This means you can still install this plugin on an existing site and everything will work seamlessly.

The check_password filter is available just like the default WP function.

wp_set_password

This function is included here verbatim but with the addition of returning the hash. The default WP function does not return anything which means you end up hashing it twice for no reason.

All versions of wp-password-bcrypt with dependencies

PHP Build Version
Package Version
Requires php Version >=5.6.0
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