I am kinda of puzzle how to identify if the IOS is able to use for crypto commands.
I have this IOS, c3660-js-mz.122-28a.bin
which i verified at the verification tool, but it says that IPSEC is one of the feature.
Can I presume that this is really the case as I still can;t go in to the new router to verify the commands are there or not.
I'm afraid that image does not support IPSec.
I went to http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp, selected 'Search by Image' and entered your image name.
A list was shown with services this image provides and IPSec wasn't one of them.
An image that contains IPSec usually have k9 as part of the filename.