im working on a website where the users can connect with iphone to some functions of it by using a sha1 encrypted password. In other words the plain password of wordpress encrypted in sha1.

In the past i did the silly thing of editing the core files of wordpress to get the password when the user register and save that password in sha1 on the wp_users table.

Of course my client updated wordpress and all the functions were lost. Yeah im stupid, im not sure what i was thinking that day.

There is any way to hook to the register function to get the password , encrypt it in sha1 format and storeit in the database from the functions.php file of my theme?

Any ideas?

2 Answers 2


Have a look at Pluggable Functions in /wp-includes/pluggable.php. You can safely replace the password generating/checking functions with your own.

  • I dont want to replace wordpress register method, just add a function to it. The password when user register will be saves as normally. I want to save a sha1 encrypted pass into another table cell
    – chifliiiii
    Sep 14, 2011 at 1:48
  • 1
    @chifliiiii - i believe the only way to get the plaintext password is to replace wp_hash_password function with essentially the same function, but add your own sha1 hash and insert into a table. look in /wp-includes/user.php at wp_insert_user and wp_update_user where wp_hash_password is called. there don't appear to be any hooks that give you access to plaintext, just the hash.
    – Milo
    Sep 14, 2011 at 2:13
  • At end i modified i added my own hook in user.php and plugable.php
    – chifliiiii
    Sep 15, 2011 at 16:33
  • @chifliiiii - just to clarify, anything you want to modify in pluggable.php should go in your own plugin, not directly in pluggable.php, as that will get overwritten when you update.
    – Milo
    Sep 16, 2011 at 1:17

You can hook into wp_check_password(), which does this at end:

return apply_filters('check_password', $check, $password, $hash, $user_id);

If $check is true then $password is current valid pass for $user_id.

Note that this will only work next time specific user logins. You can't just retrieve plan text passwords for all accounts.

  • CAn you explain me a bit better how to do that?Im really new to hooks and still dont get it right
    – chifliiiii
    Sep 14, 2011 at 22:39

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