Active record callback after_find doesnot exist

I have a class in which the data is encrypted and stored for all
fields.
Whenever the record is loaded from database, the data should be
decrypted.
If there was a after_find callback, we could have done the decryption
in that, but after_find doesnot exist.
So how can we implement after_find or is there any other callback
which can be useful.
Regards,
Pankaj

According to http://api.rubyonrails.org/classes/ActiveRecord/Callbacks.html
after_find does exists.

Fred