Q*Password Keeper

QPasswordKeeper is an application for the Android platform. It stores a list of passwords in an encrypted list. The list is encrypted using the AES standard with a key length of 128 Bit. The list is stored in the application internal memory.

Use Cases:

Aim of the application is to provide quick and easy access to a list of password. The list is accessed through a single master password.


Application Screens:

Password Screen

The password screen lists all passwords.

Each entry has the following parameters:

  • a category represented through an icon
  • a reference string that is used to identify the entry
  • a user name (green)
  • a password (blue)
    If "show password" is disabled in the settings screen a password hint is shown instead of the password.
  • a URL associated with the entry (red)
  • a remarks text (grey)

A long click on the password list opens the context menu. The list may be sorted by the password parameters.
There is also an option to copy the user name (green) to the clip board.
Another option allows the password (blue) to be copied  to the clipboard.
Note: This feature has to be enabled in the settings screen.
Attention: When enabled, the clear text password is copied into the clipboard.

The password screen has two modes. If "Show passwords" is enabled the passwords are shown for each entry. If disabled a password hint is shown if available. The password is only revealed when pressing the magnifier icon.

The following functions from the options menu are identical in both modes of operation.

Press the menu button for the following options:
1) Add:
Pressing this button launches another screen that allows for a new password to be added.

2) Edit:
One and only one password has to be selected by setting the tick box on the left side of the password row.
When the edit button is pressed, the selected password entry is copied into a screen for editing. Once the edit screen is left with an OK, the changes to the password are stored and the application returns to the password screen.

3) Delete:
The delete option deletes all password rows that have been selected by ticking the box on the left hand side of the password row.
Attention: Make sure you have selected only those password rows that you want to delete.

4) Change PW:
Pressing this button opens a new screen to change the master password. After pressing the "Set Master Password" button, the password is encrypted and saved with the new password.
Attention: The new master password supersedes the old password and the password list is only accessible with the new master password.

5) Settings:
Opens the settings dialog.

6) Exit:
This option will exit the application.

Search Screen

The search screen is the same as the password screen with the following exceptions:

1) There is an additional search text field used to filter the password list. Only those password entries are shown that contain text that matches the text in the search text field.

2) The option dialog (menu button) and the context dialog (long press) is not available. Change to the password screen in order to access the option.  

Edit Screen

The edit screen allows all password parameters to be changed.

Select one of the predefined categories by either entering the number of the category in the top left text field or by selecting the corresponding icon.

Generate a new password by pressing the "new" button next to Password.
Attention: The new password will overwrite the existing password.

Change the text by touching a text field and change the text.
Note: It is possible to use multiline text. 

Settings Screen

The settings screen allows the following adjustments:

1) Case sensitive sort
When enabled, the sort operations launched through the context menu (long press) distinguish between upper and lower case characters.

2) Case sensitive search
When enabled the search screen is case sensitive, otherwise not. 

3) Warn on delete
When enabled, a dialog is shown when attempting to delete password entries.

4) Show passwords
When enabled, the cleartext passwords are shown in the password list. When disabled, the passwords (blue) are not shown ("hidden" is shown instead). An additional icon is shown, which when pressed, shows the clear text password in a pop-up window.

5) Allow password copy
When enabled, the password can be copied into the clip board through the context menu.

6) Password settings
The passwords settings are applied when generating a new password in the edit screen.
  6.1) Password length defines the number of characters used to generate the password
  6.2) "Add lower case" enabled will add lower case characters to the generated password
  6.3) "Allow upper case" enabled will add upper case characters to the generated password
  6.4) "Allow number" enabled will add digits to the generated password
  6.5) "Allow special" enabled will add special characters (!$#:;?%+) to the generated password
  6.6) "Include chars" is a list of additionally characters allowed in the generated password
  6.7) "Exclude chars" is a list of characters not allowed in the generated password
Attention: The generated password is more secure when there is more variety allowed to generate the password. The default settings are such to generate secure passwords.
Note: You do not have to remember the password. You just need to look it up in the QPasswordKeeper.

Synchronisation Screen

The Syncronise screen allows the encrypted passwords to be stored and loaded externally.

There are three options available:

1) Send an email to your email address containing the encrypted password list. Do so by entering your email address in the top most text field. Then press the "Send email" button.  Depending on your phone setup you can choose the email client to be used.
The email contains the password list, which has been encrypted with your master password. The email body contains this list.

2) The password list that has been encypted with your master password is stored on the external SD Card when pressing the "Store to external storage" button.

The file name is: /mnt/sdcard/download/QKeeperDoc.pbk

Pressing the "Load from external storage" button loads the above file, tries to decrypt it with the current password and if sucessfull, replaces the current passwords with the passwords within this file.
Attention: The loading procedure overwrites your current list. 
Note: The external SD Card has to be physically available and has to be mounted for this feature to work. Otherwise an error message is shown.

The file on the SD Card can be copied onto a desktop client using tools such as Kies.

Both the data transfer via email or the storage on the SD Card provide means to move the encrypted list of passwords to an externally accessible medium.


Supporting Tools:

QKeeperDump is a Java console application that decrypts the password list and dumps it to the screen.
Start the QKeeperDump from the command line using the instruction below. The ">" is the command prompt and not part of the instruction.

>java -jar QKeeperDump.jar
Usage: QKeeperMain <Input Filename> <Password>

<Input Filename> is the name of the file containing the encrypted password. This is the data that is exported via email or by exporting the data to the external memory.
<Password> is the password that was used to enrypt the data on the phone. 

Attention: The tool dumps a list of the passwords in clear text.


QKeeperEditGui is a graphical viewer for the encrypted data. Also a Java application. The application does not need to be installed. Store anywhere on the computer and launch QKeeperEditGui via the command line:

>java -jar QKeeperEditGui.jar

You may also add the line above in a batch file so that is becomes accessible via single click from windows. Within the batch file make sure to cd to the folder the application is stored prior to starting it. 

Select the file name using the eclipse button, the open button or select File->Open from the application menu. When prompted for the password enter the master password also used in the Android app.

The list of password is filtered by the text entered in the filter toolbar edit field. The filter is applied to all attributes in the list.

The URL is a hyperlink that follows to the URL when clicked. 

Note: The application title is deceptive as it only allows viewing the passwords. Editing may be supported in later versions.

Attention: The tool displays the list of the passwords in clear text.
















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