Dr.-Ing. Johannes Braun

Technische Universität Darmstadt
Fachbereich Informatik
Kryptographie und Computeralgebra
Hochschulstraße 10
64289 Darmstadt
Germany

Raum: S2/02 B205

Tel.: 06151/16-20664
Fax: 06151/16-20665

Email: jbraun(a-t)cdc.informatik.tu-darmstadt.de

 

 

 

 

 

 

 

Short CV

  • since 10/2014: Manager of the DFG Collaborative Research Center 1119 CROSSING
  • 04/2015 Doctorate in Computer Science (Dr.-Ing.) at Technische Universität Darmstadt.
    Thesis: Maintaining Security and Trust in Large Scale Public Key Infrastructures
    Supervisor: Prof. Dr. Johannes Buchmann
  • 05/2010-4/2015: Phd student, Technische Universität Darmstadt, Germany
  • 10/2004-12/2009 Diploma in Computer Science and Business Economics (Wirtschaftsinformatik), TU Darmstadt, Germany

Research Interests

  • Public Key Infrastructures
  • Web PKI
  • Electronic Identities and Signatures
  • Applied Cryptography
  • Long Term Security

Projects

Teaching

Lectures, Seminars

  • Grundlagen der Informatik 2; lecture; summer term 2014
  • Implementation of a reputation system for CA trust management; Implementation of proactive revocation checking; crypto lab; summer term 2014
  • Implementation of a universal certificat verification service based on notaries;
    Implementation of a Firefox Extension for external certificate path validation
    ;
    crypto lab; winter term 2013/14
  • Electronic Society; conference seminar; winter term 2012/13; summer term 2013
  • Secure Multiparty AES; crypto lab; winter term 2012/13
  • Public Key Infrastructures; lecture; summer term 2012, 2013, 2014, 2015, 2016, 2017
  • Forward secure signatures for Certification Authorities; PKI lab; summer term 2012
  • Cloudsafe - sicherer Datenspeicher in der Cloud; crypto lab; summer term 2011
  • Electronic Identities; conference seminar; winter term 2010/11

Supervised Theses

  • Mobile Authentisierung mit dem neuen Personalausweis (MONA); Moritz Horsch; Master thesis; 2011
  • Individuell angepasstes Vertrauen in die Web-PKI.  Eine Analyse des Einsparungspotentials an vertrauenswürdigen CAs; Gregor Rynkowski; Master thesis; 2013
  • Policy-basierter Vergleich von Zertifizierungspraktiken innerhalb der Web-PKI; Michael Gleser; Bachelor thesis; 2013
  • Integration von vorwärtssicheren Signaturverfahren in die CA Infrastruktur; Sheng Guo; Studienarbeit; 2012
  • Design and deployment of a public key infrastructure; Christian Klos; Bachelor thesis; 2013
  • Risk Simulations for the Web PKI; Daniel Franke; Bachelor thesis; 2014
  • Reputation Systems for Trust Management in the Web PKI; Jiska Classen; Master thesis; 2014
  • NotaryCache: Preventing man-in-the-middle attacks through ubiquitous multi-path probing; Fabian Letzkus; Master thesis; 2015
  • Implementation of a Reputation System for CA Trust Management; Isabella Dix; Bachelor thesis; 2016
  • Analyse von TLS Bibliotheken basierend auf Fuzz Testing; Johannes Roth; Bachelor thesis; 2016

Publications

Weitere Attribute

Publikationsart

Password Assistance

Moritz Horsch, Johannes Braun, Johannes Buchmann
In: Open Identity Summit 2017, Oktober 2017
[Online-Edition: https://oid2017.hotell.kau.se/]
[Inproceedings]

The Day the Cryptography Dies

John Mulholland, Michele Mosca, Johannes Braun
In: IEEE Security & Privacy, Vol. 15, p. 14-21, August 2017
[Article]

Update-tolerant and Revocable Password Backup

Moritz Horsch, Johannes Braun, Dominique Metz, Johannes Buchmann
In: ACISP 2017 - 22nd Australasian Conference on Information Security and Privacy, Juli 2017
[Online-Edition: acisp.massey.ac.nz/index.html]
[Inproceedings]

Quantum Cryptography: a view from classical cryptography

Johannes Buchmann, Johannes Braun, Denise Demirel, Matthias Geihs
In: Quantum Science and Technology, Vol. 2, Mai 2017
[Article]

SHORT PAPER: LINCOS - A Storage System Providing Long-Term Integrity, Authenticity, and Confidentiality

Johannes Braun, Johannes Buchmann, Denise Demirel, Mikio Fujiwara, Matthias Geihs, Shiho Moriai, Masahide Sasaki, Atsushi Waseda
In: ASIACCS 2017 - ACM Asia Conference on Computer and Communications Security, April 2017
Springer
[Inproceedings]

Password Policy Markup Language

Moritz Horsch, Mario Schlipf, Stefen Haas, Johannes Braun, Johannes Buchmann
In: Open Identity Summit, Vol. 264, Oktober 2016
[Inproceedings]

LINCOS - A Storage System Providing Long-Term Integrity, Authenticity, and Confidentiality (Full Paper)

Johannes Braun, Johannes Buchmann, Denise Demirel, Mikio Fujiwara, Matthias Geihs, Shiho Moriai, Masahide Sasaki, Atsushi Waseda
August 2016
[Misc]

Password Requirements Markup Language

Moritz Horsch, Mario Schlipf, Johannes Braun, Johannes Buchmann
In: ACISP 2016 - 21st Australasian Conference on Information Security and Privacy, Juli 2016
[Online-Edition: nsclab.org/acisp2016/]
[Inproceedings]

A Distributed Reputation System for Certification Authority Trust Management

Jiska Classen, Johannes Braun, Florian Volk, Matthias Hollick, Johannes Buchmann, Max Mühlhäuser
In: 14th IEEE International Conference on Trust, Security and Privacy in Computing and Communications (IEEE UbiSafe Symposium), 2015
[Online-Edition: https://research.comnet.aalto.fi/Trustcom2015/]
[Inproceedings]
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