libraries/ActionBarSherlock | ||
OpenPGP-Keychain | ||
OpenPGP-Keychain-API-Demo | ||
OpenPGP-Keychain-API-Lib | ||
Resources | ||
.gitignore | ||
build.gradle | ||
CHANGELOG | ||
COPYING | ||
DESCRIPTION | ||
README.md | ||
settings.gradle |
OpenPGP Keychain (for Android)
OpenPGP Keychain is a EXPERIMENTAL fork of Android Privacy Guard (APG)
Contribute
Fork OpenPGP Keychain and do a merge request. I will merge your changes back into the main project.
Build
Build with Gradle
- Have Android SDK "tools", "platform-tools", and "build-tools" directories in your PATH (http://developer.android.com/sdk/index.html)
- Export ANDROID_HOME pointing to your Android SDK
- Install gradle
- Execute
gradle wrapper
(http://www.gradle.org/docs/current/userguide/gradle_wrapper.html) - Execute
./gradlew assemble
Build with Ant
- Have Android SDK "tools" directory in your PATH (http://developer.android.com/sdk/index.html)
- Execute
android update project -p OpenPGP-Keychain
andandroid update project -p libraries/ActionBarSherlock
- Execute
cd OpenPGP-Kechain
,ant debug
Build with Eclipse
- File -> Import -> Android -> Existing Android Code Into Workspace, choose "libraries/ActionBarSherlock"
- File -> Import -> Android -> Existing Android Code Into Workspace, choose "OpenPGP-Keychain"
- 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
- forked Spongy Castle Crypto Lib (Android version of Bouncy Castle)
- android-support-v4.jar: Compatibility Lib
- barcodescanner-android-integration-supportv4.jar: Barcode Scanner Integration
Build Barcode Scanner Integration
- Checkout their SVN (see http://code.google.com/p/zxing/source/checkout)
- Change android-home variable in "build.properties" in the main directory to point to your Android SDK
- Change directory to android-integration
- Build using
ant build
- 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 will be 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
- Open svg file in Inkscape
- Extensions -> Color -> darker (2 times!)
Security Model
Basic goals
- Intents without permissions should only work based on user interaction (e.g. click a button in a dialog)
Android primitives to exchange data: Intent, Intent with return values, Send (also an Intent), Content Provider, AIDL
Possible Permissions
- ACCESS_API: Encrypt/Sign/Decrypt/Create keys without user interaction (intents, remote service), Read key information (not the actual keys)(content provider)
- ACCESS_KEYS: get and import actual public and secret keys (remote service)
Without Permissions
Intents
All Intents start with org.sufficientlysecure.keychain.action.
- android.intent.action.VIEW connected to .gpg and .asc files: Import Key and Decrypt
- android.intent.action.SEND connected to all mime types (text/plain and every binary data like files and images): Encrypt and Decrypt
- IMPORT
- IMPORT_FROM_FILE
- IMPORT_FROM_QR_CODE
- IMPORT_FROM_NFC
- SHARE_KEYRING
- SHARE_KEYRING_WITH_QR_CODE
- SHARE_KEYRING_WITH_NFC
- EDIT_KEYRING
- SELECT_PUBLIC_KEYRINGS
- SELECT_SECRET_KEYRING
- ENCRYPT
- ENCRYPT_FILE
- DECRYPT
- DECRYPT_FILE
With permission ACCESS_API
Intents
- CREATE_KEYRING
- ENCRYPT_AND_RETURN
- ENCRYPT_STREAM_AND_RETURN
- GENERATE_SIGNATURE_AND_RETURN
- DECRYPT_AND_RETURN
- DECRYPT_STREAM_AND_RETURN
Broadcast Receiver
On change of database the following broadcast is send.
- DATABASE_CHANGE
Content Provider
- The whole content provider requires a permission (only read)
- Don't give out blobs (keys can be accessed by ACCESS_KEYS via remote service)
- Make an internal and external content provider (or pathes with )
- Look at android:grantUriPermissions especially for ApgServiceBlobProvider
- Only give out android:readPermission
ApgApiService (Remote Service)
AIDL service
With permission ACCESS_KEYS
ApgKeyService (Remote Service)
AIDL service to access actual private keyring objects
Licenses
OpenPGP Kechain is licensed under Apache License v2.
Libraries
-
ActionBarSherlock
http://actionbarsherlock.com/
Apache License v2 -
SpongyCastle
https://github.com/rtyley/spongycastle
MIT X11 License -
ZXing QRCode Integration
http://code.google.com/p/zxing/
Apache License v2 -
HTMLCleaner
http://htmlcleaner.sourceforge.net/
BSD License -
HtmlSpanner
Apache License v2
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