If you desire to encrypt your data stored on devices (macOS), FileVault 2 is a free encryption software tool.
Just like BitLocker, FileVault 2 (FileVault full-disk encryption) uses XTS-AES-128 encryption with a 256-bit key “to help prevent unauthorized access to the information on your startup disk”. Here are the steps to turn on FileVault2 on you macOS.#
Open the System Preferences. - click Security and Privacy. - In the Security & Privacy pane, - Click the FileVault tab. - Click the lock in the bottom-left corner of the Security & Privacy pane. - Enter your administrator name and password for the computer and then click Unlock..
Depending on the option to store the recovery key you have chosen, this can be saved in your iCloud or on your device. I chose to save it to iCloud. After this is done, the encryption of the hard disk will run and this can take up to 24 hours as shown below.
Note: To turn off Data encryption, kindly follow the same process in reverse order as shown below. All you need to do is turn off FileVault.
Open the System Preferences and click Security and Privacy. - In the Security & Privacy pane, click the FileVault tab. - Click the lock in the bottom-left corner to allow you to make changes. - Enter your administrator name and password for the computer and then - Click Unlock.. - Click Turn Off FileVault.