Daniel Gultsch

Recent Projects

Software

• Conversations - an encrypted, mobile friendly XMPP client for Android
• XMPP Compliance Tester - checks a given server for compatibility with the compliance levels defined in XEP-0387
• XMPP Server Status - Status page and uptime monitor for XMPP servers
• Conversations Push Proxy - An XEP-0357: Push Notifications app server that relays push messages between the user’s server and Googles Firebase Cloud Messaging.
• Java JMAP library - A Java library for the JSON Meta Application Protocol and Ltt.rs a Proof of concept Email client for Android.

Security

• CVE-2015-8688: Gajim Roster Push Attack / Message Interception
• CVE-2018-6591: Converse.js leaking information about which rooms are bookmarked
• CVE-2019-16235+: Multiple Vulnerabilities found in Dino

Standardization

• OMEMO Multi-End Message and Object Encryption
• HTTP File Upload
• User Avatar to vCard-Based Avatars Conversion

Essays

• Conversations: A Mission Statement
• The State of Mobile XMPP in 2016
• Blind Trust Before Verification
• An Objection to ‘The ecosystem is moving’
• A series leading up the release of Conversations 2.0
  • The rocky road to OMEMO by default
  • Here lies the Sliding Pane Layout. RIP
• A pathway to a well regulated instant messaging market

Talks

• Jabber/XMPP: Instant Messaging selber in die Hand nehmen @ MRMCD 2017 (German)

Donations

If you like my work you can support me financially (via Liberapay, Github Sponsors, bank transfer, …).

Commercial products & services

• XMPP Consulting
• Server setup - get your own XMPP server up and running
• conversations.im - an XMPP provider that also offers Domain Hosting

Contact

• hidden with JavaScript (e-mail & xmpp)
• Mastodon
• Github
• pgp.pub.asc
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