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Keep your notes safe and secure with Note Crypt for Android!

License: GNU General Public License v3.0

Java 100.00%

crypt backup android notes

notecrypt's Introduction

NoteCrypt

Keep your notes safe and secure with Note Crypt for Android!

Create different encrypted, with password, database files.
Add new notes in a database choosing for each of them: title, tags and text of the note.
Filter by Tag the list of the notes.
Mark the notes as important by clicking the star icon.
Sorting notes by name or creation date.
Change the password of an existing database.
The database is securely encrypted with AES 128 bit, using cipher-block chaining (CBC), PKCS5Padding and a random IV generated at every save. For the KDF a random salt and PBKDF2WithHmacSHA1 are used.
Auto create a hidden backup database to prevent data loss in case the file gets corrupted while saving (the backup file is saved with the name: ."database name").
Ability to search through your notes.

If you forget your password, the notes will be inaccessible.

Thanks to naofum for the Japanese translation and to hanelore for the Brazilian Portuguese translation.

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notecrypt's Issues

Hi. I'm Harry.
I'd like to contribute to your project. I'm a content creator and my I help out mostly by creating documents I feel and think projects should have. Privacy Policy Statements, FAQs, About etc. Mostly anything that has to do with text styled with markdown.
I think it'll be cool to have a privacy policy statement that will put forward your policies to end users about information collection and use but I'm quite certain you don't collect any user information externally. However, it's still a good thing end users are made aware of this.

I would love to hear your thoughts on this.
Thanks

NullPointerException when accessing the DB

I received a few reports similar to this one:

java.lang.RuntimeException: 
  at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:2778)
  at android.app.ActivityThread.handleLaunchActivity (ActivityThread.java:2856)
  at android.app.ActivityThread.-wrap11 (Unknown Source)
  at android.app.ActivityThread$H.handleMessage (ActivityThread.java:1589)
  at android.os.Handler.dispatchMessage (Handler.java:106)
  at android.os.Looper.loop (Looper.java:164)
  at android.app.ActivityThread.main (ActivityThread.java:6494)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:438)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:807)
Caused by: java.lang.NullPointerException: 
  at com.notecrypt.ui.ReadNoteActivity.onCreate (ReadNoteActivity.java:49)
  at android.app.Activity.performCreate (Activity.java:7009)
  at android.app.Activity.performCreate (Activity.java:7000)
  at android.app.Instrumentation.callActivityOnCreate (Instrumentation.java:1214)
  at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:2731)

So apparently the problem lays here

NoteCrypt/app/src/main/java/com/notecrypt/ui/ReadNoteActivity.java

Line 49 in 78f7ad1

setTitle(db.getNotes().get(location).getTitle());

The db variable should not be null because it is initialized before we reach the ReadNoteActivity

NoteCrypt/app/src/main/java/com/notecrypt/utils/CryptoLoad.java

Line 180 in cfbfd3e

App.setDatabase(db);

I need to check more closely what is causing this bug, and right now I'm unable to reproduce it.

Provide new translations

Thanks to all your good contributions right now NoteCrypt is available in English, Italian, Japanese, Brazilian Portuguese, Portuguese, German, Lithuanian, Hungarian, Romanian, Egyptian Arabic, Ukrainian, Greek, French, Kazakh and Russsian.
More languages would be appreciated.

The strings to translate are about 80 and can be found here https://github.com/RyuzakiKK/NoteCrypt/blob/master/app/src/main/res/values/strings.xml

The new translations needs to be placed inside a new folder called values-xx-rXX under /app/src/main/res/ where the first xx is the code of the language, and the other XX is the country code. If in doubt just ask.

Support opening databases through content:// URIs

This would allow the accessing of databases stored in synchronized locations, like those provided by the Android ownCloud app.

Recent list

Can you add an option to delete them or an option to not save them at all?

Revoking permission at SelectDatabaseActivity crashes app

Hi, there, I've found a crash in version 1.44, which is downloaded from F-Droid.

I seems that it is related to the dangerous permission android.permission.READ_EXTERNAL_STORAGE and is triggered in the SelectDatabaseActivity. It can be caused when the app attempts to read external storage without either permission checking (via checkSelfPermission) nor permission request (via requestPermissions).

Reproduce crash

This crash can be reproduced on my Samsung device, following the steps:

grant the storage permission for the app
create a database in the main activity
select a database and enter the SelectDatabaseActivity
go to the system setting and revoke the storage permission
back to the app and it crashes

@RyuzakiKK
Could you help me review this issue? If you need more information, I may make a video showing the crash. Very thanks!

Cannot create db

I cannot create db file. I tried creating with initial settings, selecting with ghostcommander and inputting manually. Nothing worked

Feature request: Make encryption optional

This app can be used to write, organize, and save unencrypted notes if encryption was optional.

A "Encrypted" checkbox should be marked by default when you hit the CREATE button.
A "Locked"/"Unlocked" icon should be placed next to encrypted/unencrypted files respectively.

NoteCrypt crashes when trying to save/return to previous screen on Lineage15.1 (8.1 base)

The tool crashes when trying to either save the database or when trying to navigate inside it.

This behavior hasn't existed on Lineage14.1 which bases on AOSP 7's code, also did I triple check for missing read/write permissions but no dice.

That said, to edit any entry is impossible by now, however, reading entries work when considering that returning a page will make the tool crash.