Best Encryption For Mac Os X

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  3. Nov 30, 2018 If you're using FileVault in Mac OS X Snow Leopard, you can upgrade to FileVault 2 by upgrading to OS X Lion or later. After upgrading OS X, open FileVault preferences and follow the onscreen instructions to upgrade FileVault. RAID partitions or non-standard Boot Camp partitions on the startup drive might prevent OS X from installing a local.
  1. Mac File Encryption
  2. Mac Os File Encryption
  3. Best File Encryption For Mac

Turn on and set up FileVault

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FileVault 2 is available in OS X Lion or later. When FileVault is turned on, your Mac always requires that you log in with your account password.

  1. Choose Apple menu () > System Preferences, then click Security & Privacy.
  2. Click the FileVault tab.
  3. Click , then enter an administrator name and password.
  4. Click Turn On FileVault.

If other users have accounts on your Mac, you might see a message that each user must type in their password before they will be able to unlock the disk. For each user, click the Enable User button and enter the user's password. User accounts that you add after turning on FileVault are automatically enabled.

Choose how you want to be able to unlock your disk and reset your password, in case you ever forget your password:

  • If you're using OS X Yosemite or later, you can choose to use your iCloud account to unlock your disk and reset your password.*
  • If you're using OS X Mavericks, you can choose to store a FileVault recovery key with Apple by providing the questions and answers to three security questions. Choose answers that you're sure to remember.*
  • If you don't want to use iCloud FileVault recovery, you can create a local recovery key. Keep the letters and numbers of the key somewhere safe—other than on your encrypted startup disk.

If you lose both your account password and your FileVault recovery key, you won't be able to log in to your Mac or access the data on your startup disk.

Encryption occurs in the background as you use your Mac, and only while your Mac is awake and plugged in to AC power. You can check progress in the FileVault section of Security & Privacy preferences. Any new files that you create are automatically encrypted as they are saved to your startup disk.

When FileVault setup is complete and you restart your Mac, you will use your account password to unlock your disk and allow your Mac to finish starting up. FileVault requires that you log in every time your Mac starts up, and no account is permitted to log in automatically.

Reset your password or change your FileVault recovery key

Best Encryption For Mac Os X

If you forget your account password or it doesn't work, you might be able to reset your password.

If you want to change the recovery key used to encrypt your startup disk, turn off FileVault in Security & Privacy preferences. You can then turn it on again to generate a new key and disable all older keys.

Turn off FileVault

If you no longer want to encrypt your startup disk, you can turn off FileVault:

  1. Choose Apple menu > System Preferences, then click Security & Privacy.
  2. Click the FileVault tab.
  3. Click , then enter an administrator name and password.
  4. Click Turn Off FileVault.

Decryption occurs in the background as you use your Mac, and only while your Mac is awake and plugged in to AC power. You can check progress in the FileVault section of Security & Privacy preferences.

Learn more

  • Learn how to create and deploy a FileVault recovery key for Mac computers in your company, school, or other institution.
  • If you're using FileVault in Mac OS X Snow Leopard, you can upgrade to FileVault 2 by upgrading to OS X Lion or later. After upgrading OS X, open FileVault preferences and follow the onscreen instructions to upgrade FileVault.
  • RAID partitions or non-standard Boot Camp partitions on the startup drive might prevent OS X from installing a local Recovery System. Without a Recovery System, FileVault won't encrypt your startup drive. Learn more.

Mac File Encryption

* If you store your recovery key with Apple or your iCloud account, there's no guarantee that Apple will be able to give you the key if you lose or forget it. Not all languages and regions are serviced by AppleCare or iCloud, and not all AppleCare-serviced regions offer support in every language. If you set up your Mac for a language that AppleCare doesn't support, then turn on FileVault and store your key with Apple (OS X Mavericks only), your security questions and answers could be in a language that AppleCare doesn't support.

There are many tools for encrypting files in OS X. GUI apps to do that have varying prices. Unfortunately, OS X itself doesn't have many built-in ways to encrypt a file. I'll show you the two native methods available in OS X.

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Introduction. Encryption is a vast and complex subject. There are many nuances and gotchas. In this article, we'll keep it short and sweet for beginners so that it's easily understandable for a specific, simple task. For those who want to go further and expand their knowledge, I'll list some resources at the end of this How-to.

Method #1. Encrypted DMG. A 'DMG' file, short for 'disk image,' can be used as a container to store one or more files if desired. It uses AES-256 encryption, which is considered fairly strong encryption.

You've likely seen DMG files before because they're handy ways to distribute software. In this case, we'll encrypt the contents of a DMG file and set a passcode to decrypt it.

The OS X utility you'll use is /Applications/Utilities/Disk Utility.app. The example here uses the version found in OS X 10.11 El Capitan.

1. Launch Disk Utility.app.

2. Go to the app's File Menu and select New Image > Blank Image.

The Disk Utility File menu.

3. You'll see and popup with fields to fill out. The first field, 'Save As:' will be the name of the DMG file. The third field, 'Name' is the name of the volume that will mount. They can be the same, but make them different to easily, visually differentiate them.

4. As soon as you select the encryption method, AES-256, you'll be prompted for the passcode. Make it at least 12 characters and don't forget it. After you select a volume size, you can leave the rest of the items as the default.

5. Click save. On your desktop you'll see your encrypted DMG file and also the mounted volume that you named above. You can drag the files you want encrypted into this volume, then unmount it. (Don't forget to delete the originals.) Now your data is (fairly) safe.

Your encrypted DMG file looks like this.

6. To access the now encrypted data, double click your DMG file. You'll be promoted for the passcode you entered in step #4 above. The decrypted volume will mount, and you can access the original files.

Do NOT check the box to save the password in the Keychain else anyone who has access to your Mac can easily decrypt your DMG with a double-click.

Now you have a secure container in which you can drag anything you like. Just remember that when you drag sensitive files, across volumes, into the container to delete the originals and select 'Secure Empty Trash.' However if you're using an SSD and/or El Capitan, read this article first. 'How to replace El Capitan's missing Secure Empty Trash.'

Next page: You knew it was coming. A command line technique.

Page 2 - Method #2, the UNIX Command Line

Method #2. SSL Encryption on the command line. OS X has within its UNIX core the facility to encrypt individual files. You can do this on the command line with the 'openssl' command. For more details, including the nuance of the alternate method to encrypt for email transmission, this tutorial on SSL. We're going to encrypt a text file. The method I show here also uses AES-256 encryption.

1. Encrypt. Open the terminal command and navigate to the file to be encrypted. I'll assume you know how to use the UNIX 'cd' command to navigate to it. Let's call it secret.txt. Enter this on the command line.

You'll be prompted to enter the passcode and then verify it. The original file will automatically be deleted and the output encrypted file is named 'secret.enc'. My encrypted text file looks like this:

2. Decrypt. Again, on the command line, navigate to the encrypted file and enter:

You'll be promoted for the passcode. The decrypted text file will be written to the file after the '>' symbol, and the original encrypted file will be retained.

This second method is a bit geeky, but after some experimenting with some dummy test data, you should get the hang of it. Of course, if you wanted to get really geeky, you could wrap the above commands in a shell script with user inputs, but that's way beyond the scope of this article.

Final Note: There is a similar technique that uses the zip command on the command line. Utilities like Cocoatech's Path Finder wrap a GUI around it. However, for backwards compatibility, so far as I know, the OS X implementation of the zip encryption remains very weak and should not be used. OpenSSL is your best, more secure method.

Mac Os File Encryption

Further Reading

Best File Encryption For Mac

1. Why we use the -salt option above.