FAQ


  1. How does RR File Locker keep my files safe?
  2. Why RC4 encryption? Why not [insert encryption algorithm here]?
  3. I forgot my password, how can I recover my files?
  4. How can I transfer my encrypted files to another phone/tablet?
  5. I backed up my data and restored to a new handset, and now I can't open my files. What gives?
  6. I had to do a factory reset on my phone, how do I access my encrypted files?
  7. I moved a picture or video into RR File Locker and deleted the original, but it still shows up in Gallery. What the heck?
  8. My phone's internal storage is filling up, can I keep my encrypted data on the SD card?
  9. I live in [insert country here], why can't I purchase RR File Locker?
  10. I'd really like to see [insert feature here] in RR File Locker. Can you add this?
  11. How do I open a file for edit while it is in the locker?
  12. When I try to view an item in the locker, I get an error that says something like "No Intent for Activity" or "No application found for viewing file". What the heck does that mean?


  1. How does RR File Locker keep my files safe?

    1. Any files stored in RR File Locker are stored in an encrypted file format. Files are encrypted using a 56 bit modified RC4 encryption algorithm

  2. Why RC4? Why not [insert encryption algorithm here]?

    1. 56 bit RC4 was chosen as it offers a good balance of safety and speed. Although other algorithms and longer encryption keys may offer stronger encryption, they take significantly longer to encrypt/decrypt. If there is demand, we may consider releasing a "professional" version or RR File Locker that offers alternate encryption algorithms and key lengths.

  3. I forgot my password, how can I recover my files?

    1. Sorry, you're out of luck. Keep your password safe!

  4. How can I transfer my encrypted files to another phone/tablet?

    1. Export the encrypted files to your file system on the old system, copy the unencrypted files over to the new system and then import them into RR File Locker on the new system.

  5. I backed up my data and restored to a new handset, and now I can't open my files. What gives?

    1. The encryption key used by RR File Locker is comprised of several pieces, one of which uses the handset's UID. This is to avoid attempts to hack into encrypted files by moving to a different handset. If you restore data to a new handset (or a new ROM on the same handset), the phone/tablet's UID may change, in which case you will no longer be able to decrypt your files. To transfer your data to another phone/tablet, see the answer to question 4.

  6. I had to do a factory reset on my phone, how do I access my encrypted files?

    1. See the previous 2 questions. If you are going to do a factory reset, you must first export all of your encrypted data, factory reset your phone, re-install RR File Locker, then re-import the (now unencrypted) files. If you do a factory reset without first exporting your encrypted data you will be unable to open your encrypted data after doing a factory reset – even if you still have access to the encrypted files.

  7. I moved a picture or video into RR File Locker and deleted the original, but it still shows up in Gallery. What the heck?

    1. Gallery is an android application outside the control of RR File Locker and it seems to have its own mind about caching files and videos even after they have been removed from the file system. The good news is there are a couple of things you can do to avoid having things show up in Gallery:

      1. Any files you do not want to show up in Gallery, when you move or download them onto your android device, put them in a folder that contains a file named ".nomedia". A convenient directory to use for this is built into RR File Locker, it can be found here:/mnt/sdcard/.rr/.fl/.import/
      2. If your file is already in Gallery, send it to RR File Locker from Gallery (rather than using the import function from inside RR File Locker. Be sure to use the "move to" option when sending to RR File Locker.


  8. My phone's internal storage is filling up, can I keep my encrypted data on the SD card?

    1. Absolutely! Later versions of RR File Locker (1.04 and later) keep encrypted data on the SD card by default. Some android devices (for instance, Samsung Galaxy S and Galaxy Tab) actually have 2 sd cards in addition to internal storage; by default RR File Locker will use the non-removable SD card storage (since that's what Android OS reports as the default external storage location). A new feature as of version 1.09 allows you to specify whatever folder you like to store encrypted data in (settings -> Data Storage Location). Note that changing this setting will apply to newly added files only; if you want to move existing files to the new storage location, export and reimport them.


  9. I live in [insert country here], why can't I purchase RR File Locker?

    1. RR File Locker is not available for purchase in all countries. This is because laws regarding sale and usage of encryption software isn't always clear; If RR File Locker is not available for purchase in your country and you are (or know) a legal expert who can unequivically explain the laws regarding sale and usage of encryption software in your country, please contact us at pcloadletter@redrabbitsw.com.


  10. I'd really like to see [insert feature here] in RR File Locker. Can you add this?

    1. Maybe! Send any feature requests to pcloadletter@redrabbitsw.com. If it's a reasonable request we'll do our best to include it in a feature release.


  11. How do I open a file for edit while it is in the locker?

    1. Editing of encrypted files is not directly supported in RR File Locker. In order to edit a file that is stored in the locker, you will have to first export the file to the file system (long click, export to file system), edit the exported file, then re-import into RR File Locker. As far as edit functionality from inside RR File Locker, it is a feature that is on the list; however we have to find a way to implement this feature without sacrificing security which is difficult as it requires leaving an decrypted file on the file system for the duration while the user may be editing.


  12. When I try to view an item in the locker, I get an error that says something like "No Intent for Activity" or "No application found for viewing file". What the heck does that mean?

    1. RR File Locker itself does not hold the functionality to view decrypted files. It decrypts the data and hands it to an app installed on your handset. If RR File Locker cannot find an app to view the decrypted file, you'll get an error like this. To resolve, simply download and install the appropriate application from whatever app store you like.