The source for my private website powered by hugo a static code generators and typescript/node based CLI to fetch my content from various sites..

A simple static website created with jekyll

Bytes is a utility library that makes it easy to create, parse, transform, validate and convert byte arrays in Java. It supports endianness as well as immutability and mutability, so the caller may…

A multi platform image density converting tool converting single or batches of images to Android, iOS, Windows or CSS specific formats and density versions given the source scale factor or width/he…

A Java standalone implementation of the bcrypt password hash function. Based on the Blowfish cipher it is the default password hash algorithm for OpenBSD and other systems including some Linux dist…

A full-featured indoor positioning system that was developed during my master thesis. It has a javascript based rich UI and has a server-client architecture.

A docker-compose setup that maintaines a Pi-hole DNS with an with an upstream Unbound recursive DNS all hosted locally.

A standalone Java 7 implementation of HMAC-based key derivation function (HKDF) defined in RFC 5869 first described by Hugo Krawczyk. HKDF follows the "extract-then-expand" paradigm which is compat…

IDMask is a Java library for masking internal ids (e.g. from your DB) when they need to be published to hide their actual value and to prevent forging. It has support optional randomisation has a w…

BCrypt based key derivation function to improve BCrypt as a cryptographic primitive for password hashing and key derivation

A tool that enables advanced features through adb installing and uninstalling apps like wildcards and multi device support. Useful if you want to clean your test device from all company apks or ins…

A cli tool that helps signing and zip aligning single or multiple Android application packages (APKs) with either debug or provided release certificates. It supports v1, v2 and v3 Android signing s…

A simple script exporting chats from a rocket chat instance using the public REST API. Useful if no administrative access is possible.

A cryptographically secure pseudorandom number generator cli tool printing in a wide variety of byte encodings (hex, base64,..) and for many programming languages (c, java, c#, php, etc.) using NIS…

A maven configuration which can be used as a commons config parent for POM files

A very simple Android app that can morse given input through audio, vibration and light flash. Also can morse your SMS.

Miscellaneous projects done during my studies in computer science at the Vienna University of Technology from about 2009 to 2011.

This is a simple App to test some blur algorithms on their visual quality and performance.

A shared preference implementation for confidential data in Android. Per default uses AES-GCM, BCrypt and HKDF as cryptographic primitives. Uses the concept of device fingerprinting combined with o…

This is the prototype developed during the "Bankathon16" hackathon hosted by INSO. It was a 2 day event, 3 developer worked on the project. This project achieved 2nd place in the ranking.

Dali is an image blur library for Android. It contains several modules for static blurring, live blurring and animations.

Implementation of the single-step key derivation function (KDF) as described in NIST Special Publication 800-56C Rev1 supporting messages digest and HMAC.

A tool to normalize filenames for movies and series/shows database so that they all would have the same format making it easier to parse it for other services

Global checkstyle config to be reused in different projects. These include my own personal rules so your milage may vary.

A catch-all repo for all kinds of JMH benchmarks

This is a task execution simulator (simulating parallel executions of task in an operating system) originally developed for my first master thesis.

SLF4J binding for Timber - a logger with a small, extensible API which provides utility on top of Android's normal Log class.