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Institut für Theoretische Informatik

Arbeitsgruppe Kryptographie und Sicherheit

Carmen Manietta

Am Fasanengarten 5

Geb. 50.34

D-76131 Karlsruhe

Tel.: + 49 721 608-44213

Fax: + 49 721 608-55022

E-Mail: crypto-infoCws1∂iti kit edu


Seven Theses on IT Security


Seven Theses

Open Positions

You haven't found a suitable position? Even if it is not always advertised, we are happy to hear from new doctoral students / postdocs who are interested in reinforcing our team. Simply send us your unsolicited application. We look forward to hearing from you!


Welcome to KASTEL

The Competence Center for Applied Security Technology (KASTEL) is one of three competence centers for cyber security in Germany, which were initiated by the Federal Ministry of Education and Research (BMBF) in March 2011.

Following the motto “Comprehensible security in the networked world”, KASTEL is meeting the challenges posed by the increasing interconnection of previously isolated systems.

Of particular importance are the consequences of digitalization in the area of critical infrastructures, for example in the energy economy, in industrial production or networked mobility, but also in "intelligent" environments.

KASTEL bundles the competencies in the field of IT security at the research location Karlsruhe. The goal is to develop a widespread approach instead of isolated partial solutions. The focus will be on comprehensive security in specific application areas, such as power grids or intelligent factories.

To ensure this security, new threats need to be modeled, security objectives need to be described and new methods have to be developed.

This can only be achieved through the cooperation of cryptographers, IT-security specialists, software-engineers, network experts, jurists, economics and social scientists – like here at KASTEL.


KASTEL started in 2011 with a provisional term of four years. The goal was to conduct interdisciplinary research and answer questions about IT security that were to be put to practical use on the basis of prototypes and scenarios. This section, known as Phase 1, was completed in autumn of 2015. After a successful evaluation, the BMBF extended the duration of the competence centers and KASTEL started the second phase with newly defined research fields and projects.


KASTEL-PI as Program Chair at the TCC

This year, the "Theory of Cryptography Conference" (TCC) took place from December 01 to 05 in Nuremberg. The conference is organized by the International Association of Cryptologic Research (IACR) and offers a platform especially for results in theoretical cryptography.
Besides Prof. Alon Rosen from the "Interdisciplinary Center Herzliya" (IDC), Israel, KASTEL-PI Prof. Dennis Hofheinz was part of the Program Chair. One of his tasks there was to put together the program, i.e. to decide which papers would be accepted at the conference.

KASTEL certificate now also for industrial engineers and business informatics students

Since 2012, KIT has been offering informatics-students the opportunity to complete a course of studies specialized in IT security with the KASTEL certificate. The certificate has now been extended in such a way that students of industrial engineering and business informatics also have the opportunity to prove a strong IT security focus in their studies.
The prerequisites have been adjusted so that no courses are now obligatory that cannot be included in one's own course of study.

Alice und Bob im Wunderland IT-Sicherheit

The Digital Inovation Center (DIZ) in cooperation with the IT-Sicherheitsregion Karlsruhe organized the event "Alice and Bob in Wonderland IT Security" on November 14, 2019. IT security experts from research and industry met there to provide a framework for exchange in the field of IT security. For this purpose, lectures were held in which, among other things, Darknet was presented. Afterwards the opportunity for networking was offered.

KASTEL was also represented there and exhibited parts of the Kryptologikum, an institute-owned museum of historical encryption machines.

Melanie Volkamer in an interview with SWR Aktuell Netzagent

The Internet and the use of other digital technologies entail risks that most users can hardly recognize and assess. Be it concrete technical problems or possible application errors that could endanger yourself or your employer. Exactly this is the topic of an interview that Kai Laufen from SWR Aktuell gave to KASTEL-PI Melanie Volkamer:
How to make people more aware of it? What dangers are there on the Internet? How can you protect yourself from them?

Dual success for KASTEL scientist

Christiane Kuhn, who works at the Chair for Practical IT Security at KIT and has been part of KASTEL since October, was the main author of the paper "On privacy notions in anonymous communication". The paper presents and compares different definitions of privacy for anonymous communication channels. In particular, inconsistencies of existing security terms were identified.
In addition to winning the Best Paper Award at this year's "Symposium on Privacy Enhancing Technologies" (PETS), it will also be awarded a 2019 Sponsorship Prize from the German Society for Data Protection and Data Security (GDD).

KASTEL scientist as invited guest at the KITS conference 2019

The IT Security Coordination Office held the KITS Conference 2019 on September 4 and 5.

KASTEL scientist Dr. Hubert B. Keller, Karlsruhe Institute of Technology (KIT), Head of the Department of Advanced Automation Technologies at the Institute of Automation and Applied Informatics (IAI), was invited to give a keynote speech on the subject of security.

During the part "Impulse Discussion: Security from the Beginning to the End of a Product - New Tasks and Obligations for Companies", he also gave a lecture with the title "Cyber Security - Status and Ways" in his role as representative of the Gesellschaft für Informatik at the 6th KITS Conference "Quality Infrastructure IT Security", which took place in Berlin on September 5, 2019.