Lost encrypted files can see can't recover

i have lost encrypted files and not sure why. Trojan maybe. I had my personal jpeg's in an encrypted file that was inside of another folder. these jpegs (about 3g's) were from my camera downloads and some photodeluxe (created) jpegs.

My (hide a file) program warned that it could no longer kide the files when I tried to....so I removed them from hide a file. the whole folder regular and encrypted and not, disappeared off my radar. I downloaded Piraform Recuva and have successfully recovered the regular files. it show the encrypted ones but Recuva couldn't recover them. My registry shows 3 types of encrypted files but I'm not sure what value to put on them if any. the files are located under c:?