What kind of hash is this?

Question

MySQL

<form action="/restore?act=a_restore&rh=217507ce3cf48fc0c7&hash=490843428cf119a92d&sure=21edd2b836b20ccf9d" method="post"></form>

Is there a hash here?))
There are 18 characters in both parts (HERE 490843428cf119a92d and HERE 21edd2b836b20ccf9d)
What type are they? How to decrypt?
As far as I know, there is no 18-character hash.
I would be very grateful for clarifications.

Answer 1

Is this a hash from VKontakte?

Answer 2

The first link in Google: ekimoff.ru/453 .