eloquent/pbkdf2-compat

A compatibility library for the PHP 5.5 function hash_pbkdf2().

PBKDF2-compat

A compatibility library for the PHP 5.5 function hash_pbkdf2()., _(*1)

, _(*2)

Installation and documentation

• Available as Composer package eloquent/pbkdf2-compat.

What does it do?

This library provides a forwards-compatible implementation of the hash_pbkdf2() function introduced in PHP 5.5. It allows the use of this function in versions of PHP prior to 5.5, and falls back to the native function when it is available., _(*3)

Usage

See the PHP manual entry., _(*4)

Behaviour of length parameter

Although the documentation does not specify, the $length parameter refers to the resulting string length, not the length of the raw hash. This means that when $raw_output is false, $length needs to be doubled to produce a hash containing the same amount of data (because hex encoding doubles the number of bytes in the result string)., _(*5)

Acknowledgements

Inspired by ircmaxell/password_compat. PBKDF2 implementation derived from Symfony's Pbkdf2PasswordEncoder., _(*6)