Chaos Computer Club - archive feed

Flutter is a software development kit based on the Dart language enabling developers to create performant cross-platform applications.

We'll have an introduction for people with some basic knowledge of Flutter or other cross-platform toolkits and later on a view on advanced topics.

In this talk, we will have a look on performance-tuning, useful features as well as some background information on the Flutter framework, it's engine and the Dart runtime.

In particular, the following topics will be addressed:

- What's this fluttery Flutter?

- Animations

- example of animations

- performance-tuning

- UX patterns in Flutter

- responsive layouts

- routing

- hight-quality Widgets

- the Flutter Framework

- under the hood of Flutter's rendering

- Flutter Web, dart2js and what Flutter has (not) to do with JavaScript

about this event: https://c3voc.de

European governments are proposing vague legislation that would likely require that messages be scanned for objectionable content before the message is sent (client-side scanning). This is bad.

The legislation has been promoted under names like "fighting child sexual abuse", by lobbyists promoting a proprietary screening service. We don't have good reason to think such scanning would in fact prevent child sexual abuse.

Moreover, to scan messages this way would in practice require that we forego end-to-end encryption. Client-side scanning would be terrible for information security, data protection, privacy, freedom, &c.

It happens only I am presenting, but the idea for this talk came from discussions at Cryptohagen.

about this event: https://c3voc.de

In this presentation, we will take a look at this years badge and give some hints and ideas as to how it can be hacked

about this event: https://c3voc.de

The BornHack 2022 team would like to welcome you to this year's BornHack event. We will walk over changes to the venue, schedule, and other information about the event itself.

This is also an excellent opportunity to meet the teams behind BornHack.

about this event: https://c3voc.de

3D Modellierung ist zu aufwändig? Und auf Thingiverse nichts passendes gefunden? In diesem Petit Foo zeige ich anhand eines Beispieles wie man einfach und schnell 3D Projekte umsetzt indem man Modelle von Thingiverse remixt und daraus eine passende Lösung kreiert.

about this event: https://www.chaospott.de

It's over before you know it... this talk looks back at the event, explains how the tear-down works, highlights next years camps and gives a tanks to all the organizers on stage.

What more can i say? Except that i need to enter at least 250 characters. I'll just blabber on and fill up th

🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈🌈

about this event: https://program.mch2022.org/mch2022/talk/DZAUQA/

The traditional talk by most or all operational teams about the infrastructure built for MCH2022. While the site has some infrastructure in place, a lot of it has to be built for this event. On the other hand there's also teams that just make things go away.

MCH2022 can not be organised without a lot of temporary infrastructure. Join the operational teams and discover the new, the unexpected or the surprising technologies that were necessary to make MCH2022 a success. Expect graphs, pictures of bodges, perhaps a few hacks but definitely a lot of hard work behind the scenes. Think fiber, LEDs, DatenKlos, trusses, waste bags, Terabytes, angels, vouchers, simultaneous viewers, amps, volts, golf carts etc. Please smile (or laugh) at our bad jokes, we're all running on fumes and in desperate need of a proper sleep.

about this event: https://program.mch2022.org/mch2022/talk/ZLALJT/

The MCH2022 design speaks for itself, but we would still nerd about it for a while. It is beautiful, colorful, generative, and has some physics ideas behind it. Some of it is obvious, but if you want to know all the hidden depths, this is the talk to visit.

The triangulair MCH2022 design is a colourfull generative kaleidoscope with some hidden depths. In that way it reflects the hacker community. It is in some ways a spiritual successor to the SHA2017 design, but it has its own look and feel. You can find it all around the field, on prints and stickers, on the website and on the event shirts.

Do you want to know the nitty gritty details of the optical physics, the generative basis and symmetric math ideas behind it? Some of it is obvious, but we would like to talk about it, and go deeper in on the concepts.

about this event: https://program.mch2022.org/mch2022/talk/KBP937/

Data keeps flowing! In Android, we have the concept of permissions, users feel confident that only if they turn on the permission, their data is shared. But what about an app silently sitting on your device with no permission whatsoever! What can that app know about you?

In this talk, I'll talk about the Privacy Posture of Android!

What kind of data is being collected, and how is it channelled and used? How does advertising work on mobile?

Can your device be fingerprinted? What kind of privacy threats exists on Android?

We will learn about the permission model of Android and how permissions operate at the kernel level!

This shall be followed by a demo of an Android app, which needs no permission from the user. We will see what all information can be retrieved from your device, without any permission!

about this event: https://program.mch2022.org/mch2022/talk/DWWQAN/

Using cryptography can give you easy assurances, keep data confidential and keep prying eyes from stuff where they should not be.

However it's not magic.

This talk is intended for programmers, users and software designers.

This talk is about hardcore mathematics while you should not have to understand what the mathematics are but what they do.

What does cryptography do: encrypt, decrypt, sign and verify.

How are certificates used in cryptogaphy and why are they totally not a magical thing.

It covers what cool hardware is available, open design and open source, hardware tokens and how to use TPM for cool features.

And last but not least: it contains best practices and warnings. After this talk you might be able to see what's snakeoil and what is real.

== NFT's are a scam. If you are into crypto-bullshit please stay away. ==

Cryptography seems like magic anytime you at first look at it.

In the past years I have been helping a lot of projects and customers with my more-than-basic knowledge about applied cryptography.

I'll talk about:

* What is cryptography (basic math)

- encryption

- decryption

- digital signatures

- digital signature verification

* What can it do for you?

- Deliver security

- Deliver privacy

- Deliver dataloss

* When to use encryption

- what cryptography do you want to build (hint: none)

- what cryptography do you want to use (a- or symetrical encryption).

- how do you do key management

- where to find the best practices

* About hardware

- Provide security

- Provide speed

- HSM, TPM, processor and other acceleration

* Standards

- The good, the bad, the ugly

- Old ones

- New ones

- Very special ones

* Limitations and workarounds

* Software

- How to avoid OpenSSL

* This all in random() order. Random = 4

about this event: https://program.mch2022.org/mch2022/talk/S7GEZF/