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OpenPGP Keychain (for Android)

OpenPGP Keychain is a EXPERIMENTAL fork of Android Privacy Guard (APG)

see http://sufficientlysecure.org/keychain

Build

Build with Gradle

  1. Have Android SDK "tools", "platform-tools", and "build-tools" directories in your PATH (http://developer.android.com/sdk/index.html)
  2. Export ANDROID_HOME pointing to your Android SDK
  3. Install gradle
  4. Execute gradle wrapper (http://www.gradle.org/docs/current/userguide/gradle_wrapper.html)
  5. Execute ./gradlew assemble

Build with Ant

  1. Have Android SDK "tools" directory in your PATH (http://developer.android.com/sdk/index.html)
  2. Execute android update project -p OpenPGP-Keychain and android update project -p libraries/ActionBarSherlock
  3. Execute cd OpenPGP-Kechain, ant debug

Contribute

Fork OpenPGP Keychain and do a merge request. I will merge your changes back into the main project.

Development with Eclipse

Android Studio is currently not supported or recommended!

  1. File -> Import -> Android -> Existing Android Code Into Workspace, choose "libraries/ActionBarSherlock"
  2. File -> Import -> Android -> Existing Android Code Into Workspace, choose "libraries/HtmlTextView"
  3. File -> Import -> Android -> Existing Android Code Into Workspace, choose "OpenPGP-Keychain"
  4. OpenPGP-Kechain can now be build

Libraries

All JAR-Libraries are provided in this repository under "libs", all Android Library projects are under "libraries".

  • ActionBarSherlock to provide an ActionBar for Android < 3.0
  • HtmlTextView for non-crashing TextViews with HTML content
  • forked Spongy Castle Crypto Lib (Android version of Bouncy Castle)
  • barcodescanner-android-integration-supportv4.jar: Barcode Scanner Integration

Build Barcode Scanner Integration

  1. Checkout their SVN (see http://code.google.com/p/zxing/source/checkout)
  2. Change android-home variable in "build.properties" in the main directory to point to your Android SDK
  3. Change directory to android-integration
  4. Build using ant build
  5. We use "android-integration-supportv4.jar"

On error see: http://code.google.com/p/zxing/issues/detail?id=1207

Build Spongy Castle

Spongy Castle is the stock Bouncy Castle libraries with a couple of small changes to make it work on Android. OpenPGP-Keychain uses a forked version with some small changes to improve key import speed. These changes have been sent to Bouncy Castle, and Spongy Castle will be used again when they have filtered down.

see

Notes

Eclipse: "GC overhead limit exceeded"

If you have problems starting OpenPGP Kechain from Eclipse, consider increasing the memory limits in eclipse.ini. See http://docs.oseems.com/general/application/eclipse/fix-gc-overhead-limit-exceeded for more information.

Generate pressed dashboard icons

  1. Open svg file in Inkscape
  2. Extensions -> Color -> darker (2 times!)

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.

See http://source.android.com/source/code-style.html

XML Eclipse Settings

  • XML Maximum line width 999
  • XML: Split multiple attributes each on a new line (Eclipse: Properties -> XML -> XML Files -> Editor)
  • XML: Indent using spaces with Indention size 4 (Eclipse: Properties -> XML -> XML Files -> Editor)

See http://www.androidpolice.com/2009/11/04/auto-formatting-android-xml-files-with-eclipse/

Licenses

OpenPGP Kechain is licensed under GPLv3+. Some parts (older parts and some libraries are Apache License v2, MIT X11 License)

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

Images

  • icon.svg
    modified version of kgpg_key2_kopete.svgz

  • dashboard_manage_keys.svg, dashboard_my_keys.svg, key.svg
    http://rrze-icon-set.berlios.de/
    Creative Commons Attribution Share-Alike licence 3.0

  • dashboard_decrypt.svg, dashboard_encrypt.svg, dashboard_help.svg
    http://tango.freedesktop.org/
    Public Domain

  • dashboard_scan_qrcode.svg
    New creation for OpenPGP Kechain
    Apache License v2