Encrypt files on a remote server (backup encryption)

With Immortal Files you may encrypt all data located on a remote storage server (such as FTP, WebDAV, or Swift) or on an external USB, FireWire, eSata drive. As soon as you set up for encrypting data, it will be transparent for you, but nobody except you will be able to access the data.

To encrypt the data in a backup storage location, you should do it when you create the new backup storage location.

To encrypt all the data of a backup storage location

  • In the Backup Storages dialog, in the final screen, select Encrypt storage.
    encrypt backup storage dialog
  • Type a password in the Encryption password box.
    This encryption password allows you to access the data in the backup later.
  • Re-type the password in the Verify password box.
  • Click Add storage to complete the process of creating the storage location.

Here are some important tips about your encryption password:

  • Your encryption password should as long as possible. It is recommended to use at least 15 characters in the password.
  • Your encryption password should have upper- and lower-case characters, numbers, and other symbols.
  • If you use a remote sever as a backup storage location, this password should be different from the password for accessing the remote server.
  • This password should be different from you OS X system login password and should be different from any e-mail password. (If you use same password that you use with other accounts, such as Facebook, your security falls to zero.)
  • The password should be as random as possible. Do not use obvious characters strings like your name or your birthday.
  • But, be reasonable, if you back up home photos and do not want somebody see them, you can have a simpler password than if you store company-confidential or financial information.


  • If you lose or forget this password, it is impossible to restore your data. Immortal Files cannot do this, and your data is lost.
  • Put this password in a safe place.

You need to enter an encryption password only once. Once you have entered and verified the password, it will be stored in your keychain. However, you may delete it from there. If you do, Immortal Files asks for this encryption password every time you do a backup and restore operation.

How to retrieve an encryption password from your keychain

If you forget your encryption password, you may retrieve it from the keychain where your backup was set up.

  • Start the Keychain Access application. (You can find this app in the Utilities folder in your Applications folder.)
  • In the left pane, make sure that Keychains: login and Category: All Items are selected.
  • Type your backup storage location’s URL into the Search box.
    get password from keychain

    (You can locate the URL manually, too, by scrolling through the list.)

  • Double-click the appropriate item
  • Select Show password
    show password in keychain
  • When asked, type your OS X system password.

Technical notes

Immortal Files uses the AES256 algorithm, which provides extremely strong security. To encrypt the data, Immortal Files generates an encryption key, which is based on a password you create.

Every file is encrypted separately, and in the event of damage to your backup storage device, you can restore the data.

Every file is split to 50MB chunks, and every file or chunk is encrypted using a new initialization vector (IV), which provides increased security.

If you would like to decrypt individual files use this code