irmamobile

Authentication made easy, privacy-friendly, and secure

IRMA offers a privacy-friendly, flexible and secure solution to many authentication problems, putting the user in full control over his/her data.

The IRMA app manages the user's IRMA cards containing personal data. It can receive new cards, selectively disclose data contained in the user's cards to others, and attaching data to signed statements. These data can be relevant properties, such as: "I am over 18", "my name is ..." and "I am entitled to access ....". They are only stored on the user's device and nowhere else.

Development setup

Clone the project

git clone --recursive git@github.com:privacybydesign/irmamobile.git

If your forgot to include --recursive in your git clone, make sure to init and update the submodules:
```
cd irmamobile
git submodule init
git submodule update
```
Install Java development kit. Java 11 should work, but if your Android development environment is too old, you might need to fall back to Java 8. See troubleshooting on how to install Java 8 under Debian/Ubuntu or MacOS.
```
# On Debian / Ubuntu
apt install openjdk-11-jdk

# On MacOS
# TODO: Install via `brew install openjdk@11`, but how to replace system Java?
```
Install the Android SDK tools by going to the Android developer download page. You may just want to install the Command line tools only if you are not going to use Android Studio. If you are going to use it, you can use the initial setup process of Android Studio to setup the SDK. Make sure to install the build-tools and platform for Android >= 28. In addition to the SDK platform, the following SDK tools need to be installed:
- Android SDK Build-Tools
- Android SDK Platform-Tools
- NDK version 21.x (version 22.x is not supported by gomobile yet)
- CMake
If you're using the SDK Manager of Android Studio: you can find specific versions for Build-Tools by enabling the option Show Package Details.
Update your environment. You installed the Android SDK in the previous step, but you will still need to update your PATH to make sure you can access the utilities provided and to make sure that flutter keeps working, you will need to export an ANDROID_HOME environment variable:
```
echo 'export ANDROID_HOME="/YOUR/PATH/TO/android-sdk"' >> "$HOME/.bashrc"
echo 'export PATH="$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools:$PATH"' >> "$HOME/.bashrc"
```
Download Flutter from the download page and follow their installation steps. Make sure to update your $PATH again.
Run flutter doctor to see what steps remain to get a fully operational development environment for flutter (this may include accepting the android licenses). At this point you could also download your development environment.
Install Go from the Go download page or by using your OS package manager.
Run (somewhere outside of your irmamobile checkout) go get golang.org/x/mobile/cmd/gomobile to install gomobile and then run gomobile init to initialize gomobile.
Create the irmagobridge: ./bind_go.sh.
Start an emulator or connect a device via USB and run the flutter project: flutter run. You can also use Android Studio or Visual Studio Code for this step. On Android, sometimes the build flavor is not picked up automatically. This can be identified when the flutter tool cannot find the generated apk after building. In this case run flutter run --flavor alpha. In case you run the flutter project via Android Studio, you can specify the build flavor in the run configuration. On iOS, no custom flavor should be specified.
You can use flutter run -t to run different app configurations, for example run flutter run -t lib/main_prototypes.dart to start the app in the prototypes menu.

JSON serialization code

This project uses json_serializer. To re-generate serialization code, run ./codegen.sh

Troubleshooting

Have you checked out the two submodules of this repository? If find ./irma_configuration is empty, this is the case.
If something has changed in the irmagobridge or in irmago then rerunning ./build_go.sh is required.
In case you get the warning that the ndk-bundle cannot be found, please set the ANDROID_NDK_HOME environment variable to the right ndk version directory. These version directories can be found in $ANDROID_HOME/ndk. For example, you have to specify export ANDROID_NDK_HOME=$ANDROID_HOME/ndk/21.1.6352462. You can also make a symlink in ANDROID_HOME by doing ln -s $ANDROID_HOME/ndk/<NDK_VERSION> $ANDROID_HOME/ndk-bundle. In here <NDK_VERSION> should be replaced with the NDK version you want to use.

Installing Java 8

Install Java JDK 8, using a package manager or by manually downloading one. Once installed, you will also have to set the JAVA_HOME environment variable. For a Debian based OS you can use:

sudo apt install openjdk-8-jdk
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
echo 'export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64' >> "$HOME/.bashrc"

Starting from Debian Buster OpenJDK version 8 is no longer available, but it is currently the only version of Java fully supported by the Android SDK. You can use the AdoptOpenJDK community apt repository:

 wget -qO - https://adoptopenjdk.jfrog.io/adoptopenjdk/api/gpg/key/public | sudo apt-key add -
 sudo add-apt-repository --yes https://adoptopenjdk.jfrog.io/adoptopenjdk/deb/
 sudo apt update
 sudo apt install adoptopenjdk-8-hotspot

For MacOS, you can use homebrew to install java 8: