I have been trying to encrypt files and folders lately. It is fun but useful. You can encrypt any file which can take several years to decrypt for a hacker. That “Several” is not less. According to recent super computer “K Computer” which is the fastest can calculate 8,200,000,000,000,000 (8.2 quadrillion) calculations per second. Lets see how many seconds would take to decrypt an encrypted file by the way i am showing.