![]() VeraCrypt is an open-source program that creates encrypted volumes. Unlock the pane and click that button to begin the encryption process. If the button on the right says “Turn On FileVault,” you have it turned off. To check if you have FileVault enabled, visit the “Security & Privacy” pane under System Preferences. If you lose all that, your data will be forever encrypted. You’ll also have a recovery code, and you can log in with your iCloud account, too. ![]() This means that without your password your data is unreadable. The key to unlocking this encryption is your password. FileVault works by encrypting the entirety of your hard drive. Since Yosemite it’s been enabled by default for each new install. If running the math “backwards” to decrypt the files without the key requires huge time scales, then the encryption will be hard to break. If the math can be done quickly in the “forward” direction while encrypting files, the algorithm will be fast. ![]() In its modern incarnation, computational encryption relies on mathematical operations that can be done quickly in one direction but are very difficult to do backwards.
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