In PHP, how to save a password in encrypted form ?

[abhik143]

Hiii, 

 

I want to save a password in encrypted form, so that it will not be understand by human. Is it possible ? If yes then please explain briefly.

[requinix]

First, you want hashing. Encryption is when you can get the original password back from your database. That sounds good but it isn't. What you need is hashing, which is taking something like a password and turning it into another thing that looks random but will give you the same result for the same password. (Basically.) Then you compare hashes.

 

Use password_hash and password_verify like

// when setting or changing a password
$hash = password_hash($_POST["password"]);
/* put $hash in the database */

// when checking a password
if (password_verify($_POST["password"], $hash_from_database)) {
	// password matches
} else {
	// password does not match
}

[Jacques1]

password_hash() requires an algorithm and should be called with specific parameters:

<?php

const PW_HASH_ALGORITHM = PASSWORD_BCRYPT;  // bcrypt is the de-facto standard and currently the only choice
const PW_HASH_COST = 14;                    // adjust this to your own needs



$password = 'test';
$hash = password_hash($password, PW_HASH_ALGORITHM, ['cost' => PW_HASH_COST]);

var_dump($hash);