I recently asked HyTrust about the cost of KeyControl; they told me that a license costs $5,000/year per datacenter so you just saved me thousands of dollars with this crack. Thank you so much!
Edit: The instructions only seem to work for version 4.1 or below (4.2.1 and 4.3 didn't work for me), but fortunately you can just crack version 4.1, then upgrade to 4.2.1 with an ISO and then upgrade to 4.3 with another ISO all while retaining the cracked license. That procedure worked for me.
Edited by d293dab464, 12 February 2019 - 05:51 PM.