 Hey everyone, my name is Tobias. I'm from Skymatic and we are the makers and maintainers of the open-source project KryptoMator. I'm joined today by Markus and we've co-founded Skymatic with Sebastian and Christian last year before and yeah after around two years, we've already released KryptoMator and yeah, let's cut to the chase and I'd like to give you a lightning introduction to KryptoMator. It's a client-side encryption solution for cloud files and that means that your files are encrypted on your device before they are uploaded to the cloud so that your next cloud server only sees encrypted data. With KryptoMator, you create a vault and assign a password and that's all that you have to do to set up. So on the left side you see that the files are encrypted individually, the file names and the file contents are encrypted and this is what, as I said, what the server would see and on the right side I mean as a user you have to work on your data so KryptoMator provides a virtual drive so that you can work on your files as you're used to. It's as simple as working on a USB flash drive and you can yeah, drag and drop items out of inside and out of there and yeah, create folders and all the operations you're used to. It runs on all major operating systems including the mobile ones so the mobile devices have a direct connections to the servers, for example, WebDuff for next cloud and the Android app is actually still in beta but we've just released version 0.7 which can be considered as the first release candidate of 1.0 so we are very close to a final release. I mean, this is nothing new for you. Open source is very important and we value it very highly. I'd just like to emphasize that also for security applications it's especially important. There is this common misconception that if you open source the security implementation it reveals secret but it's quite the opposite. With that security experts and the community can validate the security implementation and this strengthens even the security. So if you'd like to Google that, it's known as a Kerkhoff's principle and yeah, we believe and we think that open source is mandatory for security applications. So in the beginning we've just developed the cryptometer application for consumers and it was one single huge repository on GitHub and then we started to modularize the core components of it to separate libraries and now we offer a cryptometer as a wide label as well. And if I look back when Sebastian initiated the project in 2014 and yeah, it was just a site project and I joined later in 2015 to develop the iOS application and yeah, it was just for fun as well and we're still very humbled today to have received the Sabin Innovation Award last year and this is when we thought, okay, let's make cryptometer a full-time thing and that's when also the development of the Android app began and yeah, my point is that we are just getting started. Later we have a workshop and we will go into the full details of the encryption scheme. So for example, how the key is derived from the password, how we do the name encryption, the content encryption and how we ensure the compatibility across multiple platforms by these little tricks like path shortening and restructuring the hierarchy and yeah, we have these cryptographic libraries for Java and Objective-C. However, we've asked ourselves how could we provide a client-side encryption solution for the web browser. We believe JavaScript would be the obvious choice but that would be the missing piece of the puzzle that we'd like to discuss in the workshop afterwards. I think the schedule is wrong. There's an updated schedule online, so it's not at 4.30, I think it's at 3.30 and also not in the main room but in the other room. Just check the schedule online. So if I sparked your interest, maybe you're even a Next Cloud developer or an Next Cloud app developer and know the ins and outs of the storage feature or you're a JavaScript developer with crypto knowledge, you're more than welcome to join us later and of course, if you're just interested in enhancing security privacy and how we're solving this, you're also welcome to join us later this afternoon. Thank you and see you later in the afternoon.