Unique Authentication System across all website/s

[CarlitoBrigante]

Originally Posted by steve@dvdlard

Bit of a long shot but does anyone know If I can reproduce the password in VB.Net. I'm trying to create a 'Post a Comment' link on another site which is .Net, tried all sorts of variations of MD5 but the resulting hash code is never the same as the database.

I had another idea - please let me know if this may lead to some problems -

1) I have mysecondarywebsite.com;
2) user insert his username/password;
3) he is sent to mymainwebsite.com with username and password as _POST data. They are checked against vb database. If correct, cookies are set. He is sent back to mysecondarywebsite.com;
4) his cookies are verified again at mysecondarywebsite.com and set also for that domain.

The problem is that if I have more than one website it is going to be a mess.

Then, another thing I could do is to put all the forms processing pages to insert data, together with the main login script, on mymainwebsite.com. When the user enters a value on mysecondarywebsite.com or on mythirdwebsite.com, he is redirected to a script on mymainwebsite.com with all info he has submitted as POST data. Now, in this script I will check also for identity of the user before inserting data...