A simple password manager
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Password Manager

A simple password manager with Qt GUI and command-line interface using AES-256-CBC encryption via OpenSSL.


  • Cross-platform: tested under GNU/Linux, Android and Windows
  • Qt Widgets GUI for desktop platforms
  • Qt Quick GUI (using Qt Quick Controls 2 and Kirigami 2) for mobile platforms
  • Interactive command-line interface
  • Simple architecture: All data is stored in ordinary files with AES-256-CBC applied. No cloud stuff. Use eg. Syncthing for synchronization.

Covered C++/Qt topics

I've mainly started this project to learn C++ and Qt programming. So beside the mentioned features this project and the underlying libraries serve as an example project covering some interesting C++/Qt topics:

  • Basic use of Qt Widgets, Qt Quick and Kirigami 2
  • Creating custom Qt models
    • Nested model and model with multiple columns
    • Support Drag & Drop in QTreeView
    • Support re-ordering in Qt Quick ListView
    • Use nested and table model within Qt QML
    • Integration with Qt Widgets' undo/redo framework
    • Filtering
  • Android tweaks
    • Add CMake target to invoke androiddeployqt
    • Customize activity
    • Customize gradle project to add additional Java dependency
    • Adjust the window style of the activity
    • Call Java function from C++ and vice verca
    • Show native file dialog
    • Open content:// URL with std::iostream
  • Windows specific issues
    • Open an std::iostream for files which have non-ASCII characters in the path
  • Use of zlib to (de)compress buffer
  • Use of OpenSSL for symmetric (de)cryption

Note that some of the mentioned points are actually implemented the underlying libraries c++utilities, qtutilities and passwordfile.



See the release section on GitHub.

Packages and binaries

Build instructions

The Password Manager depends on c++utilities and passwordfile. Checkout the README of c++utilities for more details. Note that this project is not built differently than any other CMake project.

Optional dependencies

  • When building any Qt GUI, the library qtutilities is required.
  • When building with Qt Widgets GUI support, the following Qt modules are required (version 5.6 or higher): core gui widgets
  • When building with support for the experimental Qt Quick GUI, the following Qt/KDE modules are required (version 5.12 or higher): core gui qml quick quickcontrols2 kirigami

Building this straight

  1. Install (preferably the latest version of) GCC or Clang, the required Qt modules, CMake and Ninja/Make. OpenSSL, iconv and zlib are required as well but likely already installed.
  2. Get the sources of additional dependencies and the password manager itself. For the latest version from Git clone the following repositories:
    cd $SOURCES
    git clone https://github.com/Martchus/cpp-utilities.git c++utilities
    git clone https://github.com/Martchus/passwordfile.git
    git clone https://github.com/Martchus/qtutilities.git                  # only required for Qt GUI
    git clone https://github.com/Martchus/passwordmanager.git
    git clone https://github.com/Martchus/subdirs.git
  3. Build and install everything in one step:
    cd $BUILD_DIR
    cmake \
     -G Ninja \
     -DCMAKE_BUILD_TYPE=Release \
     -DCMAKE_INSTALL_PREFIX="/install/prefix" \
    ninja install

Concrete example of 3. for building an Android APK under Arch Linux

Create stuff for signing the package (remove -DANDROID_APK_FORCE_DEBUG=ON line in the CMake invocation to actually use this):

# locate keystore

# make up some password to protect the store; enter this on keytool invocation

# create keystore (do only once)
pushd "$keystore_dir"
keytool -genkey -v -keystore "$keystore_alias" -alias "$keystore_alias" -keyalg RSA -keysize 2048 -validity 10000

Build c++utilities, passwordfile, qtutilities and passwordmanager in one step to create an Android APK for arm64-v8a:

# specify Android platform

# set project name

# locate SDK, NDK and further libraries
build_tools_version=$(pacman -Q android-sdk-build-tools | sed 's/.* r\(.*\)-.*/\1/')

# use Java 8 which seems to be the latest version which works
export PATH=/usr/lib/jvm/java-8-openjdk/jre/bin/:$PATH

# configure with the toolchain file provided by the Android NDK (still WIP)
# note: This configuration is likely required in the future to resolve https://gitlab.kitware.com/cmake/cmake/issues/18739. But for now
#       better keep using CMake's internal Android support because this config has its own pitfalls (see CMAKE_CXX_FLAGS).
cmake \
    -DCMAKE_BUILD_TYPE=Release \
    -DANDROID_ABI=$_android_arch \
    -DANDROID_PLATFORM=$_android_api_level \
    -DCMAKE_TOOLCHAIN_FILE=$android_ndk_root/build/cmake/android.toolchain.cmake \
    -DCMAKE_SYSTEM_VERSION=$_android_api_level \
    -DCMAKE_ANDROID_ARCH_ABI=$_android_arch \
    -DCMAKE_ANDROID_NDK="$android_ndk_root" \
    -DCMAKE_ANDROID_SDK="$android_sdk_root" \
    -DCMAKE_ANDROID_STL_TYPE=c++_shared \
    -DCMAKE_INSTALL_PREFIX=$other_libs_root \
    -DCMAKE_PREFIX_PATH="$root" \
    -DCMAKE_FIND_ROOT_PATH="$root;$root/libs" \
    -DCMAKE_CXX_FLAGS="-include $android_ndk_root/sysroot/usr/include/math.h -include $android_ndk_root/sources/cxx-stl/llvm-libc++/include/math.h -I$other_libs_include" \
    -DZLIB_LIBRARY="$android_ndk_root/platforms/android-$_android_api_level/arch-$_android_arch2/usr/lib/libz.so" \
    -DANDROID_APK_CXX_STANDARD_LIBRARY="$android_ndk_root/platforms/android-$_android_api_level/arch-$_android_arch2/usr/lib/libstdc++.so" \
    -DANDROID_APK_KEYSTORE_URL="$keystore_url" \
    -DANDROID_APK_KEYSTORE_ALIAS="$keystore_alias" \
    -DANDROID_APK_KEYSTORE_PASSWORD="$keystore_password" \
    -DANDROID_APK_APPLICATION_LABEL="Password Manager (unstable)" \

# configure with CMake's internal Android support
# note: Requires workaround with Android NDK r19: https://gitlab.kitware.com/cmake/cmake/issues/18739#note_498676
cmake \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_SYSTEM_VERSION=$_android_api_level \
    -DCMAKE_ANDROID_ARCH_ABI=$_android_arch \
    -DCMAKE_ANDROID_NDK="$android_ndk_root" \
    -DCMAKE_ANDROID_SDK="$android_sdk_root" \
    -DCMAKE_ANDROID_STL_TYPE=c++_shared \
    -DCMAKE_INSTALL_PREFIX=$other_libs_root \
    -DCMAKE_PREFIX_PATH="$root" \
    -DCMAKE_FIND_ROOT_PATH="$root;$root/libs" \
    -DCMAKE_CXX_FLAGS="-D__ANDROID_API__=$_android_api_level" \
    -DANDROID_APK_KEYSTORE_URL="$keystore_url" \
    -DANDROID_APK_KEYSTORE_ALIAS="$keystore_alias" \
    -DANDROID_APK_KEYSTORE_PASSWORD="$keystore_password" \
    -DANDROID_APK_APPLICATION_LABEL="Password Manager (unstable)" \

# build all binaries and make APK file using all CPU cores
make passwordmanager_apk -j$(nproc)

# install app on USB-connected phone
make passwordmanager_deploy_apk
  • The Android packages for the dependencies Qt, iconv, OpenSSL and Kirigami 2 are provided in my PKGBUILDs repo.
  • The latest Java I was able to use was version 8 (jdk8-openjdk package).

Manual deployment of Android APK file

  1. Find device ID: adb devices
  2. Install App on phone: adb -s <DEVICE_ID> install -r $BUILD_DIR/passwordmanager_build_apk/build/outputs/apk/passwordmanager_build_apk-debug.apk
  3. View log: adb -s <DEVICE_ID> logcat

Building without Qt GUI

It is possible to build without the GUI if only the CLI is needed. In this case no Qt dependencies (including qtutilities) are required.

To build without GUI, add the following parameters to the CMake call: