Studies & career
What I produced between 2002 and 2009 at Ruhr University Bochum. The documents are PDFs; source code is included where it makes sense.
4th place · CAST Award 2009
Client/server applications for anonymous signature schemes. The thesis describes how anonymous signatures can be integrated into an existing PKI using dynamic cryptographic accumulators.
Software for practical attacks on RFID cards: a program for an AVR microcontroller written in assembler, and a C++ interface for the PC built in Visual Studio.
An LFSR in VHDL, running at around 300 MHz. An A5/1 – the cipher used in GSM – at around 220 MHz. Plus an implementation of SAFER, variant K-64.
The IDEA block cipher, implemented in assembler and running on a smartcard such as a Funcard. Encryption and decryption are implemented separately.
A seminar on attacks against contactless smartcards and the countermeasures – from the radio interface to the card itself.
The slides are also available as an XPS file.
A basic overview of Thing Oriented Programming.
The slides are also available as an XPS file.
An overview of the Windows 2000 operating system – architecture, services and the attack surface of the time.
The slides are also available as an XPS file.
A Java program that lets several people sign the same XML document independently, each with their own key. The package contains the code and the paper.
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