Sérgio Leal

Password Hash is a WordpPress plugin that improves the WordPress password hashing security by using the builtin <a href="http://php.net/manual/en/function.password-hash.php" rel="nofollow ugc"><code>password_hash</code></a> and <a href="http://php.net/manual/en/function.password-verify.php" rel="nofollow ugc"><code>password_verify</code></a> functions.
If the installed PHP version doesn’t support those methods, it falls back to the standard PHPass method.

Password Hash

Replaces wp_hash_password and wp_check_password with PHP password_hash and password_verify if PHP has support for them.

michaelrhmw

For legacy support with a wider range of PHP versions, WordPress opts to use PHPASS (a portible password hashing library) which WordPress defaults to using a MD5 based hash.
The security of your password hashes can be improved by using a modern password hashing algorithm, such as BCRYPT for PHP 5.5+ or ARGON2I for PHP 7.2+
This plugin aims to improve the security of the hashed passwords by using PHP 5.5’s password_hash() function and the BCRYPT algorithm but also supports the newer ARGON2I algorithm.
For extended support when password_hash() is not available this plugin will fallback to using PHPASS with additional security when compared to the WordPress defaults.

WP Modern Password Hashing

For legacy support with a wider range of PHP versions, Wordpress opts to use PHPASS (a portible password hashing library) which Wordpress defaults to  …

Password Hash vs WP Modern Password Hashing