OpenKeychain (for Android)

OpenKeychain is an OpenPGP implementation for Android.
For a more detailed description and installation instructions go to https://www.openkeychain.org .

Branches

The development of OpenKeychain happens in the "master" branch.
For every release a new branch, e.g., "3.2-fixes" is created to backport fixes from "master"

Travis CI Build Status of master branch

How to help the project?

Translate the application

Translations are managed at Transifex, please contribute there at https://www.transifex.com/projects/p/open-keychain/

Contribute Code

Lookout for interesting issues on Github. We have tagged issues were we explicitly like to see contributions: https://github.com/open-keychain/open-keychain/labels/help-wanted
Read this README, especially the notes about coding style
Fork OpenKeychain and contribute code (the best part 😎 )
Open a pull request on Github. We will help with occuring problems and merge your changes back into the main project.
PROFIT

For bigger changes

Join the development mailinglist at https://lists.riseup.net/www/subscribe/openkeychain
Propose bigger changes and discuss the consequences

I am happy about every code contribution and appreciate your effort to help us developing OpenKeychain!

Development

Development mailinglist at https://lists.riseup.net/www/subscribe/openkeychain

Build with Gradle

Clone the project from GitHub
Get all external submodules with git submodule update --init --recursive
Have Android SDK "tools", "platform-tools", and "build-tools" directories in your PATH (http://developer.android.com/sdk/index.html)
Open the Android SDK Manager (shell command: android). Expand the Tools directory and select "Android SDK Build-tools (Version 23.0.1)". Expand the Extras directory and install "Android Support Repository" Select SDK Platform for API levels 21, 22, and 23.
Export ANDROID_HOME pointing to your Android SDK
Execute ./gradlew assembleFdroidDebug
You can install the app with adb install -r OpenKeychain/build/outputs/apk/OpenKeychain-fdroid-debug.apk

Run Tests

Use OpenJDK instead of Oracle JDK
Execute ./gradlew clean testFdroidDebug --continue

Run Jacoco Test Coverage

Use OpenJDK instead of Oracle JDK
Execute ./gradlew clean testFdroidDebug jacocoTestReport
Report is here: OpenKeychain/build/reports/jacoco/jacocoTestReport/html/index.html

Development with Android Studio

We are using the newest Android Studio for development. Development with Eclipse is currently not possible because we are using the new project structure.

Clone the project from Github
Get all external submodules with git submodule update --init --recursive
From Android Studio: File -> Import Project -> Select the cloned top folder

Libraries

Bouncy Castle

OpenKeychain uses a forked version with some small changes. These changes will been sent to Bouncy Castle.

see

Fork: https://github.com/openpgp-keychain/bouncycastle

Bouncy Castle resources

Repository: https://github.com/bcgit/bc-java
Issue tracker: http://www.bouncycastle.org/jira/browse/BJA

Documentation

Documentation project at http://www.cryptoworkshop.com/guide/
Tests in https://github.com/bcgit/bc-java/tree/master/pg/src/test/java/org/bouncycastle/openpgp/test
Examples in https://github.com/bcgit/bc-java/tree/master/pg/src/main/java/org/bouncycastle/openpgp/examples
Mailinglist Archive at http://bouncy-castle.1462172.n4.nabble.com/Bouncy-Castle-Dev-f1462173.html
Commit changelog of pg subpackage: https://github.com/bcgit/bc-java/commits/master/pg

Build System

We try to make our builds as reproducible/deterministic as possible.

Update Gradle version

Always use a fixed Android Gradle plugin version not a dynamic one, e.g. 0.7.3 instead of 0.7.+ (allows offline builds without lookups for new versions, also some minor Android plugin versions had serious issues, i.e. 0.7.2 and 0.8.1)
Update every build.gradle file with the new gradle version and/or gradle plugin version
- build.gradle
- OpenKeychain/build.gradle
run ./gradlew wrapper twice to update gradle and download the new gradle jar file
commit the corresponding Gradle wrapper to the repository (allows easy building for new contributors without the need to install the required Gradle version using a package manager)

Update SDK and Build Tools

Open build.gradle and change:

ext {
    compileSdkVersion = 21
    buildToolsVersion = '21.1.2'
}

Change SDK and Build Tools in git submodules "openkeychain-api-lib" and "openpgp-api-lib" manually. They should also build on their own without the ext variables.

Add new library

You can add the library as a Maven dependency or as a git submodule (if patches are required) in the "extern" folder.
You can get all transitive dependencies with ./gradlew -q dependencies OpenKeychain:dependencies
If added as a Maven dependency, pin the library using Gradle Witness (Do ./gradlew -q calculateChecksums for Trust on First Use)
If added as a git submodule, change the compileSdkVersion and buildToolsVersion in build.gradle to use the variables from the root project:

android {
    compileSdkVersion rootProject.ext.compileSdkVersion
    buildToolsVersion rootProject.ext.buildToolsVersion
}

You can check for wrong compileSdkVersion by find -name build.gradle | xargs grep compileSdkVersion

Slow Gradle?

https://www.timroes.de/2013/09/12/speed-up-gradle/
Disable Lint checking if it is enabled in build.gradle

Error:Configuration with name 'default' not found.

Gradle project dependencies are missing. Do a git submodule init && git submodule update

Build on Mac OS X fails?

Try exporting JAVA_TOOL_OPTIONS="-Dfile.encoding=UTF8"

Translations

Translations are hosted on Transifex, which is configured by ".tx/config".

To pull newest translations install transifex client (e.g. apt-get install transifex-client)
Config Transifex client with "~/.transifexrc"
Go into root folder of git repo
execute tx pull -af --skip

see http://help.transifex.net/features/client/index.html#user-client

Coding Style

Code

Indentation: 4 spaces, no tabs.
Maximum line width for code and comments: 100.
Opening braces don't go on their own line.
Field names: Non-public, non-static fields start with m.
Acronyms are words: Treat acronyms as words in names, yielding !XmlHttpRequest, getUrl(), etc.
Fully Qualify Imports: Do not use wildcard-imports such as import foo.*;
Android Studio warnings should be fixed, or suppressed if they are incorrect.

The full coding style can be found at http://source.android.com/source/code-style.html

Automated syntax check with CheckStyle

Linux

Paste the tools/checkstyle.xml file to ~/.AndroidStudioPreview/config/codestyles/
Go to Settings > Code Style > Java, select OpenPgpChecker, as well as Code Style > XML and select OpenPgpChecker again.
Start code inspection and see the results by selecting Analyze > Inspect Code from Android-Studio or you can directly run checkstyle via cli with .tools/checkstyle. Make sure it's executable first.

Mac OSX

Paste the tools/checkstyle.xml file to ~/Library/Preferences/AndroidStudioPreview/codestyles
Go to Preferences > Code Style > Java, select OpenPgpChecker, as well as Code Style > XML and select OpenPgpChecker again.
Start code inspection and see the results by selecting Analyze > Inspect Code from Android-Studio or you can directly run checkstyle via cli with .tools/checkstyle. Make sure it's executable first.

Windows

Paste the tools/checkstyle.xml file to C:\Users\<UserName>\.AndroidStudioPreview\config\codestyles
Go to File > Settings > Code Style > Java, select OpenPgpChecker, as well as Code Style > XML and select OpenPgpChecker again.
Start code inspection and see the results by selecting Analyze > Inspect Code from Android-Studio.

Licenses

OpenKechain is licensed under GPLv3+. The full license text can be found in the LICENSE file. Some parts and some libraries are Apache License v2, MIT X11 License (see below).

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Libraries

See In-app about screen

Images

Actionbar icons
http://developer.android.com/design/downloads/index.html#action-bar-icon-pack
QR Code Actionbar icon
https://github.com/openintents/openintents/blob/master/extensions/qrcode_ext/icons/ic_menu_qr_code/ic_menu_qr_code_holo_light/ic_menu_qr_code.svg
Key status icons by the ModernPGP working group
https://github.com/ModernPGP

ishit/open-keychain

OpenKeychain (for Android)

Branches

Travis CI Build Status of master branch

How to help the project?

Translate the application

Contribute Code

For bigger changes

Development

Build with Gradle

Run Tests

Run Jacoco Test Coverage

Development with Android Studio

Libraries

Bouncy Castle

Bouncy Castle resources

Documentation

Build System

Update Gradle version

Update SDK and Build Tools

Add new library

Slow Gradle?

Error:Configuration with name 'default' not found.

Build on Mac OS X fails?

Translations

Coding Style

Code

Automated syntax check with CheckStyle

Linux

Mac OSX

Windows

Licenses

Libraries

Images