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#Conversations Conversations is an open source XMPP (formally known as Jabber) client for Android 4.0+ smart phones. Google Play

screenshots

##Design principles

  • Be as beautiful and easy to use as possible without sacrificing security or privacy
  • Rely on existing, well established protocols
  • Do not require a Google Account or specifically Google Cloud Messaging (GCM)
  • Require as little permissons as possible

##Features

  • End-to-end encryption with either OTR or openPGP
  • Holo UI
  • Syncs with your desktop client
  • Group Chats
  • Address book integration
  • Multiple Accounts / unified inbox

###XMPP Features Conversations works with every XMPP server out there. However XMPP is an extensible protocol. These extensions are standardized as well in so called XEPs. Conversations supports a couple of those to make the overall userexperience better. There is a chance that your current XMPP server does not support these extensions. Therefore to get the most out of Conversations you should consider either switching to an XMPP server that does or - even better - run your own XMPP server for you and your friends. These XEPs are - as of now:

  • XEP-0065: SOCKS5 Bytestreams - or rather mod_proxy65. Will be used to tranfer files if both parties are behind a firewall (NAT).
  • XEP-0138: Stream Compression saves bandwith
  • XEP-0198: Stream Management allows XMPP to surive small network outages and changes of the underlying TCP connection.
  • XEP-0280: Message Carbons which automatically syncs the messages you send to your desktop client and thus allows you to switch seamlessly from your mobile client to your desktop client and back within one conversation.
  • XEP-0237: Roster Versioning mainly to save bandwith on poor mobile connections

##Contributors (In order of appearance))

  • Rene Treffer @rtreffer
  • Andreas Straub @strb

##FAQ ###General ####How do I install Conversations? Conversations is entirely open source and licensed under GPLv3. So if you are a software developer you can check out the sources from github and use ant to build your apk file.

The more convenient way - which not only gives you automatic updates but also supports the further development of Conversations - is to buy the App in the Google Play Store.

####How do I create an account? XMPP like email for example is a federated protocol which means that there is not one company you can create your 'official xmpp account' with but there are hundreds or even thousands of provider out there. To find one use a web search engine of your choice. Or maybe your univeristy has one. Or you can run your own. Or ask a friend to run one. Once you found one you can use Conversations to create an account. Just select 'register new account on server' within the create account dialog. ####How does the address book integration work? The address bock integration was designed to protect your privacy. Conversations neither uploads contacts from your address book to your server nor fills your address book with unnecessary contacts from your online roster. If you manually add a Jabber ID to your phones address book Conversations will use the name and the profile picture of this contact. To make the process of adding Jabber IDs to your address book easier you can click on the profile picture in the contact detais within Conversations. This will start an add to address book intent with the jabber ID as payload. This doesnt require Conversations to have write permissions on your address book but also doesnt require you to copy past Jabber ID from one app to another. ###Security ####Why are there to end-to-end encryption methods and which one should I choose? In most cases OTR should be the encryption method of choice. It works out of the box with most contacts as long as they are online. However PGP can be in some cases (carbonated messages to multiple clients) be more flexible. ####How do I use openPGP Before you continue reading you should notice that the openPGP support in Conversations is marked as experimental. This is not because it will make the app unstable but because the fundamental concepts of PGP aren't ready for a widespread use. The way PGP works is that you trust Key IDs instead of XMPP- or email addresses. So in theory your contact list should consist of Public-Key-IDs instead of email addresses. But of course no email or xmpp client out there implements these concepts. Plus PGP in the context of instant messaging has a couple of downsides. It is vulnerable to replay attacs, it is rather verbose, decryping and encrypting takes longer than OTR. It is however asynchronous and works well with carbonated messages.

To use openpgp you have to install the opensource app OpenKeychain (www.openkeychain.org) and then long press on the account in manage accounts and choose renew PGP announcement from the contextual menu. ###Development ####How do I build Conversations Make sure to have ANDROID_HOME point to your Android SDK

git clone https://github.com/siacs/Conversations.git
cd Conversations
git submodule update --init --recursive
ant clean
ant debug