Foil Notes

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Foil Notes allows you to encrypt notes with a password stronger than the lock code. Strictly speaking, each note is encrypted with a unique random 256-bit AES key which in turn is encrypted with an RSA key which in turn is encrypted with your password. If the bad guys get your encrypted notes, they would have to crack the AES key (different for each note) or the RSA key (shared by all notes but harder to crack) in order to extract the content. If they get the encrypted RSA key as well, then they can brute force your password. So in the end, the encryption is as strong as your password.

The format of the encrypted file is described here - it's the same format as used by Foil Pics and Foil Auth apps. Plain text (unencrypted) notes are stored in the format understood by Jolla Notes. Encrypted files are stored in ~/Documents/FoilNotes.

The RSA key is shared with Foil Pics and Foil Auth apps. It's stored in ~/.local/share/foil/foil.key - you can copy it from one device to another. Using the same RSA key on different devices, protected with different passwords, is actually not such a bad idea. If you forget the password, you can use the backup key to decrypt your notes, assuming that it's protected with a password that you still remember.

Note that you can add your encrypted files and the Foil key to the backup with the help of My Backup app.

Source code: https://github.com/monich/harbour-foilnotes

Screenshots: 
Application versions: 
AttachmentSizeDate
File harbour-foilnotes-1.0.25-1.aarch64.rpm263.48 KB13/09/2021 - 20:30
File harbour-foilnotes-1.0.25-1.armv7hl.rpm233.36 KB13/09/2021 - 20:30
File harbour-foilnotes-1.0.25-1.i486.rpm267.44 KB13/09/2021 - 20:30
File harbour-foilnotes-1.0.24-1.aarch64.rpm254.35 KB12/09/2021 - 02:44
File harbour-foilnotes-1.0.24-1.armv7hl.rpm224.62 KB12/09/2021 - 02:44
File harbour-foilnotes-1.0.24-1.i486.rpm258.69 KB12/09/2021 - 02:44
File harbour-foilnotes-1.0.22-26.1.aarch64.rpm242.13 KB18/06/2021 - 21:25
File harbour-foilnotes-1.0.22-26.1.armv7hl.rpm217.38 KB18/06/2021 - 21:25
File harbour-foilnotes-1.0.22-26.1.i486.rpm250.25 KB18/06/2021 - 21:25
File harbour-foilnotes-1.0.21-25.1.aarch64.rpm231.77 KB31/03/2021 - 02:01
File harbour-foilnotes-1.0.21-25.1.armv7hl.rpm198.49 KB31/03/2021 - 02:01
File harbour-foilnotes-1.0.21-25.1.i486.rpm239.78 KB31/03/2021 - 02:01
File harbour-foilnotes-1.0.20-23.1.armv7hl.rpm197.89 KB03/01/2021 - 04:58
File harbour-foilnotes-1.0.20-23.1.i486.rpm239.2 KB03/01/2021 - 04:58
File harbour-foilnotes-1.0.19-22.1.armv7hl.rpm196.83 KB14/12/2020 - 02:10
File harbour-foilnotes-1.0.19-22.1.i486.rpm239.08 KB14/12/2020 - 02:10
File harbour-foilnotes-1.0.18-21.1.armv7hl.rpm195.65 KB12/12/2020 - 23:12
File harbour-foilnotes-1.0.18-21.1.i486.rpm237.4 KB12/12/2020 - 23:12
File harbour-foilnotes-1.0.17-20.1.armv7hl.rpm195.04 KB21/11/2020 - 20:45
File harbour-foilnotes-1.0.17-20.1.i486.rpm237.02 KB21/11/2020 - 20:45
File harbour-foilnotes-1.0.16-19.1.armv7hl.rpm191.86 KB16/11/2020 - 00:31
File harbour-foilnotes-1.0.16-19.1.i486.rpm232.88 KB16/11/2020 - 00:31
File harbour-foilnotes-1.0.15-17.1.armv7hl.rpm190.67 KB31/10/2020 - 04:52
File harbour-foilnotes-1.0.15-17.1.i486.rpm231.77 KB31/10/2020 - 04:52
File harbour-foilnotes-1.0.14-16.1.armv7hl.rpm187.69 KB12/10/2020 - 04:34
File harbour-foilnotes-1.0.14-16.1.i486.rpm228.76 KB12/10/2020 - 04:34
File harbour-foilnotes-1.0.13-15.1.armv7hl.rpm189.31 KB06/09/2020 - 02:02
File harbour-foilnotes-1.0.13-15.1.i486.rpm230.31 KB06/09/2020 - 02:02
File harbour-foilnotes-1.0.12-14.1.armv7hl.rpm188.74 KB01/03/2020 - 20:44
File harbour-foilnotes-1.0.12-14.1.i486.rpm229.38 KB01/03/2020 - 20:44
File harbour-foilnotes-1.0.11-13.1.armv7hl.rpm188.04 KB05/01/2020 - 20:21
File harbour-foilnotes-1.0.11-13.1.i486.rpm229.21 KB05/01/2020 - 20:21
File harbour-foilnotes-1.0.10-12.1.armv7hl.rpm180.88 KB03/05/2019 - 00:55
File harbour-foilnotes-1.0.10-12.1.i486.rpm220.64 KB03/05/2019 - 00:55
File harbour-foilnotes-1.0.9-11.1.armv7hl.rpm180.7 KB30/04/2019 - 02:06
File harbour-foilnotes-1.0.9-11.1.i486.rpm219.99 KB30/04/2019 - 02:06
File harbour-foilnotes-1.0.8-10.1.armv7hl.rpm165.16 KB11/03/2019 - 03:26
File harbour-foilnotes-1.0.8-10.1.i486.rpm200.13 KB11/03/2019 - 03:26
File harbour-foilnotes-1.0.6-8.1.armv7hl.rpm160.36 KB19/02/2019 - 02:47
File harbour-foilnotes-1.0.6-8.1.i486.rpm195.22 KB19/02/2019 - 02:47
File harbour-foilnotes-1.0.5-7.1.armv7hl.rpm160.8 KB17/02/2019 - 16:58
File harbour-foilnotes-1.0.5-7.1.i486.rpm194.72 KB17/02/2019 - 16:58
File harbour-foilnotes-1.0.4-6.1.armv7hl.rpm160.81 KB17/02/2019 - 12:52
File harbour-foilnotes-1.0.4-6.1.i486.rpm195.11 KB17/02/2019 - 12:52
File harbour-foilnotes-1.0.3-5.1.armv7hl.rpm160.06 KB17/02/2019 - 02:24
File harbour-foilnotes-1.0.3-5.1.i486.rpm194.65 KB17/02/2019 - 02:24
File harbour-foilnotes-1.0.2-4.1.armv7hl.rpm157.45 KB12/01/2019 - 22:55
File harbour-foilnotes-1.0.2-4.1.i486.rpm192.28 KB12/01/2019 - 22:55
File harbour-foilnotes-1.0.1-3.1.armv7hl.rpm156.22 KB07/01/2019 - 12:44
File harbour-foilnotes-1.0.1-3.1.i486.rpm190.96 KB07/01/2019 - 12:44
File harbour-foilnotes-1.0.0-2.1.armv7hl.rpm151.85 KB06/01/2019 - 12:42
File harbour-foilnotes-1.0.0-2.1.i486.rpm186.77 KB06/01/2019 - 12:42
Changelog: 
  • 1.0.25 (Sep 13 2021)
    - Allow selecting arbitrary colors
    - Updated Polish translation (Atlochowski)
  • 1.0.24 (Sep 12 2021)
    - Save/restore the last view (encrypted vs plaintext)
    - Improved context menu behavior
    - Removed unnecessary notification
    - Updated Polish translation (Atlochowski)
  • 1.0.22 (Jun 18 2021)
    - Search mode improvements and fixes
  • 1.0.21 (Mar 31 2021)
    - Updated Polish translation (Atlochowski)
    - Added aarch64 package
  • 1.0.20 (Jan 2 2021)
    - Fixed hints
    - Harmonized pulley menu behavior
    - Don't activate search on empty pages
    - Integration with My Backup
  • 1.0.19 (Dec 13 2020)
    - Added Spanish translation
  • 1.0.18 (Dec 12 2020)
    - Improved sync with plaintext Jolla Notes database
    - Miscellaneous UI tweaks
  • 1.0.17 (Nov 21 2020)
    - Fixed cover behavior
    - Added fancy cover lock animation
    - Adapted to Jolla Notes changes
  • 1.0.16 (Nov 15 2020)
    - Adapted to recent changes in Sailfish OS
    - Fixed a few minor UI glitches
  • 1.0.15 (Oct 31 2020)
    - Fancy headers
    - Improved orientation transition
    - Fixed a problem with the page stack after cover action
  • 1.0.14 (Oct 12 2020)
    - Miscellaneous UI tweaks
  • 1.0.13 (Sep 6 2020)
    - Fixed remorse item positioning
    - Freshened up selection and reorder UI
  • 1.0.12 (Mar 1 2020)
    - Fixed a battery drain issue (animators suck)
    - Ditch MD5 and use SHA256 for signing
  • 1.0.11 (Jan 5 2020)
    - Delay autolock by 15 seconds
    - Freshened up the UI
  • 1.0.10 (May 3 2019)
    - Fixed QR code rendering defect
    - Updated Chinese translations
  • 1.0.9 (Apr 30 2019)
    - Added QR code generation
    - Tweaked translations
  • 1.0.8 (Mar 10 2019)
    - Fixed password change functionality
    - Redesigned shared key warning
  • 1.0.6 (Feb 19 2019)
    - Updated French translations
  • 1.0.5 (Feb 17 2019)
    - Updated Chinese translations
  • 1.0.4 (Feb 17 2019)
    - Updated Polish and Swedish translations
  • 1.0.3 (Feb 17 2019)
    - Undo and redo
    - French translations
  • 1.0.2 (Jan 12 2019)
    - Fixed German translations
    - Chinese translations
    - Fixed deletion of a new note
  • 1.0.1 (Jan 7 2019)
    - Polish translations
    - Swedish translations
    - German translations
  • 1.0.0 (Jan 6 2019)
    - Initial version

Comments

TheJullus's picture

Ok, reinstalling didn't seem to work. Where should I send my files and in what kind of package? (Ps. Other Foil apps for example Foil Auth work)

slava's picture

Sent you a message via openrepos.net contact page, let's see if that works.

TheJullus's picture

Access denied. To my own personal contact form

slava's picture

Hehe. Then use e-mail from the LICENSE file :)

TheJullus's picture

Oh, I feel so stupid. Anyways, I sent the files

TheJullus's picture

I managed to get back my encrypted note on a reflashed device! I just moved note files and old foil.key to right directories (as I described in the Foil Auth comment section)

direc85's picture

Just what I need to keep my notes safe. Thanks!

maier's picture

Hi may I can give my opinion in the round too)
Locking is a security feature which is located on different levels. In this case it is on the second level. (1st is the device ) So it makes sense to have in the settings an on/ off option so that the customer can decide what he wants and needs.

objectifnul's picture

Okay. After all the current locking logic is fine for me.

objectifnul's picture

Did you remove the autolock feature?

slava's picture

What do you mean by "autolock feature"?

objectifnul's picture

Maybe I'm wrong, but it seems to me that previous versions were locked atomatically after a while when minimized.

slava's picture

No it never did that, it locked (and lockes) when the screen gets locked. But locking after certain inactivity period does make sense, I'll consider that.

Pemek's picture

Just such a thought: wonder if there are two sets of passwords: main one for secure storage, and second with fake notes, easy to break. Revealing fake data would satisfy inquisitive person. Real important data still remain safe. What do you think about it?
btw, great app:)

slava's picture

That's a bit of an overkill IMO :)

minitreintje's picture

Great to see a 2nd Foil app!

Historyscholar's picture

Can you  add a transifex  page ?Thus ,I can translate  it. 

slava's picture

github pull requests are accepted but no transifex, sorry (see https://openrepos.net/comment/24717#comment-24717 for details)

nthn's picture

There is also Weblate instead of Transifex, it's free for free software projects. It can take a bit of time to get accepted but it all works well once it's set up.

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