This program does exactly what is sais…it encrpts files on yoour PC, exactly like a cryptolocker but also provides the ability to unlock the files ande decrypt them…some times…not on my test (luckly was just a test). If you share those files or copy them to another computer, shared folder, cloud drive … and you try to apened the files with the same application installed on different computer 6 out of 10 times has failed or created files that were not readable any more (i used a word file, a PDF and a jpg – PDF worked 8/10, word 6/10 and jpg 4/10 but this was fixable modifying the MIME type of file in the header to something different and then revert back to original MIME) so yes is working as intended but fails most of the time to deliver easy end user experience