Paul Baecher

Technische Universität Darmstadt
Fachbereich Informatik
Kryptographie und Komplexitätstheorie
Mornewegstraße 30
64293 Darmstadt
Germany

Room: 3.1.19

Tel.: +49 6151 16 64822

Email: baecher/cs.tu-darmstadt.de
PGP: 0x6232AB04

I am a Ph.D. student in Prof. Dr. Marc Fischlin's group Cryptography and Complexity Theory since April 2010.

Publications

On DBLP or Google Scholar.

Cryptography

• Ideal-Cipher (Ir)reducibility for Blockcipher-Based Hash Functions
  Paul Baecher, Pooya Farshim, Marc Fischlin, Martijn Stam
  EUROCRYPT 2013: pages 426–443.
• Random Oracle Reducibility
  Paul Baecher, Marc Fischlin
  CRYPTO 2011: pages 21–38.
• Expedient Non-Malleability Notions for Hash Functions
  Paul Baecher, Marc Fischlin, Dominique Schröder
  CT-RSA 2011: pages 268–283.

Security

• Breaking reCAPTCHA: A Holistic Approach via Shape Recognition
  Paul Baecher, Niklas Büscher, Marc Fischlin, Benjamin Milde
  IFIP SEC 2011: pages 56–67.
• CAPTCHAs: The Good, the Bad, and the Ugly
  Paul Baecher, Marc Fischlin, Lior Gordon, Robert Langenberg, Michael Luetzow, Dominique Schröder
  LNI 2010: pages 353–365.
• PUF-Based Authentication Protocols - Revisited
  Heike Busch, Stefan Katzenbeisser, Paul Baecher
  WISA 2009: pages 296–308.
• The Nepenthes Platform: An Efficient Approach to Collect Malware
  Paul Baecher, Markus Koetter, Thorsten Holz, Maximillian Dornseif, Felix C. Freiling
  RAID 2006: pages 165–184.

Other

• Massively-Parallel Simulation of Biochemical Systems
  Jens Ackermann, Paul Baecher, Thorsten Franzel, Michael Goesele, Kay Hamacher
  LNI 2009: pages 739–750.

Teaching Assistance

• Cryptographic hash functions (in German), summer term 2010.
• Practical course on CAPTCHAs, various terms.

Misc and Random Stuff

• mkbooklet – prepare PDF files for booklet printing.
• CASED building on OpenStreetMap, Google Maps, and in super-high orthophoto resolution.
• Piloty building on OpenStreetMap and Google Maps.
• Weather in Darmstadt on Meteomedia, WetterOnline and wetter.com.
• Proceedings (internal access only): FOCS, STOC, CCC.
• Photos.

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Last update: 2013-04-04