Argon2 is a recent entry which won the password hashing competition in 2015 and is slowly getting included in recent versions of languages like PHP 7.2 as an al

Argon2 is a recent entry which won the password hashing competition in 2015 and is slowly getting included in recent versions of languages like PHP 7.2 as an alternative to bcrypt. https://password-hashing.net/ https://password-hashing.net/ As stated in the parent, integrity check hashing (should be fast) and password hashing (should be slow) are very different things and should not be mixed to use wrong implementations. As bcrypt and argon2 both have specific prefixes, you can still keep bcrypt hashes and verifier can work on both (assuming it supports argon2) while using argon2 for newer entries stored in a database. (Preferably update the old bcrypt into argon2 on next login or something.)