Another One - Different MD5 Hashes..

[speedway]

Howdy

I have been searching for an answer but nothing comes close to my problem. I am trying to login from another product, vbDrupal to be exact. Folks over there aren't sure what's going on so I thought I would ask on the VB side...

Basically vbDrupal uses the same operation to log into VB. The input from the login box is run through md5hash to produce the 2 required MD5 hashed variables, exactly the same as Vb does it. These values are then passed to the VB function verify_authentication thus:

    $login_result = verify_authentication($name, $pass, $pass_md5, $pass_md5_utf, $remember, true );

This is all well an good and the vars arrive in the VB function as expected. But the problem is that while processing this section:

            $vbulletin->userinfo['password'] != iif($password AND !$md5password, md5(md5($password) . $vbulletin->userinfo['salt']), '') AND
            $vbulletin->userinfo['password'] != iif($md5password, md5($md5password . $vbulletin->userinfo['salt']), '') AND
            $vbulletin->userinfo['password'] != iif($md5password_utf, md5($md5password_utf . $vbulletin->userinfo['salt']), '') )

2 different MD5 hashes are produced. When coming from a VB login, everything matches but when coming from a vbDrupal login they don't. In the following is print dumps of the vars in verify_authentication from 1. vbDrupal and 2. VB login script.

1. In verify_authentication U ********** | P | MD5 6a39c2f21e6aaa086eb504e92036c282 | MDF_UTF 6a39c2f21e6aaa086eb504e92036c282 | PWD w/SALT 0cb3a82320674097a32f49281932f449 | | MD5 w/SALT af15c389037bf36faafc61e5b5ab613f | | VB Password 7ae4ed232a0c3e5ef2181a62d61e47b4 | Passwords Don't Match

2. In verify_authentication U ********** | P | MD5 6a39c2f21e6aaa086eb504e92036c282 | MDF_UTF 6a39c2f21e6aaa086eb504e92036c282 | PWD w/SALT 46e9ff795cafb40480a34c72f10bbd62 | | MD5 w/SALT 7ae4ed232a0c3e5ef2181a62d61e47b4 | | VB Password 7ae4ed232a0c3e5ef2181a62d61e47b4 |

Can anyone suggest a reason that the resulting md5 hash would produce a different result with the exact same starting data? The final MD5 w/SALT values above should equal the VB Password hash, which only one does...

Hoping someone can help..

Cheers
Bruce