Dr.-Ing. Ralf Zimmermann

  • Former Assistant - Chair Embedded Security
Zimmermann, Ralf


Dept. of Electr. Eng. and In­for­ma­ti­on Sci­en­ces
Uni­ver­si­täts­str. 150

ralf.zimmermann@rub.de PGP key


  • 2003-2009: Studies of Computer Science at Technische Universität Braunschweig
  • since 2010: Assistant researcher in the Embedded Security Group


  • Embedded Security
  • Hardware Design and Efficient Implementations of Cryptographic Algorithms
  • Cryptanalysis on Field Programmable Gate Arrays (FPGA)


High-Speed Implementation of bcrypt Password Search using Special-Purpose Hardware

Ralf Zimmermann - ReConFig 2014, Cancun, Mexico, December 8th-10th 2014

Attacking Code-Based Cryptosystems with Information Set Decoding Using Special-Purpose Hardware

Stefan Heyse, Ralf Zimmermann, Chris­tof Paar - Post-Quantum Cryptography - 6th International Workshop, PQCrypto 2014, Waterloo, ON, Canada, October 1-3, 2014

High-Performance Cryptanalysis on RIVYERA and COPACOBANA Computing Systems

Tim Güneysu, Timo Kasper, Martin Novotný, Chris­tof Paar, Lars Wienbrandt, Ralf Zimmermann - "High-Performance Computing Using FPGAs", Vanderbauwhede, Benkrid (Eds.), p. 335-366, February 2013, Springer Verlag, ISBN: 978-1-4614-1790-3

Evaluation of Standardized Password-Based Key Derivation against Parallel Processing Platforms

Markus Dürmuth, Tim Güneysu, Markus Kasper, Chris­tof Paar, Tolga Yalcin, Ralf Zimmermann - Computer Security - ESORICS 2012 - 17th European Symposium on Research in Computer Security, Pisa, Italy, September 10-12, 2012

Experimentally Verifying a Complex Algebraic Attack on the Grain-128 Cipher Using Dedicated Reconfigurable Hardware

Itai Dinur, Tim Güneysu, Chris­tof Paar, Adi Shamir, Ralf Zimmermann - SHARCS 2012 (http://2012.sharcs.org/index.html), 17-18 March 2012, Washington DC, USA

An Experimentally Verified Attack on Full Grain-128 Using Dedicated Reconfigurable Hardware

Itai Dinur, Tim Güneysu, Chris­tof Paar, Adi Shamir, Ralf Zimmermann - Advances in Cryptology - ASIACRYPT 2011 - 17th International Conference on the Theory and Application of Cryptology and Information Security, Seoul, South Korea, December 4-8, 2011

High-Performance Integer Factoring with Reconfigurable Devices

Ralf Zimmermann, Tim Güneysu, Chris­tof Paar - International Conference on Field Programmable Logic and Applications, FPL 2010, August 31 2010 - September 2, 2010, Milano, Italy