Prof. Dr.-Ing. Chris­tof Paar

  • Chair - Chair Eingebettete Sicherheit
  • Member - Horst Görtz In­sti­tu­te for IT-Se­cu­ri­ty Horst Görtz Institute for IT-Security
Paar, Chris­tof

Address

Prof. Dr.-Ing. Christof Paar
Chair for Embedded Security
Ruhr-Uni­ver­si­tät Bo­chum
D - 44780 Bo­chum

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

room
ID 2/609
phone:
(+49)(0)234 / 32 - 22994
Email:
christof.paar@rub.de PGP key
Website:
http://www.crypto.ruhr-uni-bochum.de/

Vita

  • 1991: M.S. in Electrical Engineering, Universität Siegen
  • 1994: Ph.D. the­sis on "Com­pu­ter Ar­chi­tec­tu­res for Ga­lois Field Arith­me­tic", In­sti­tu­te for Ex­pe­ri­men­tal Ma­the­ma­tics,Uni­ver­si­ty of Essen
  • 1995-2001: Faculty member in the ECE Department, Worcester Polytechnic Institute, Massachusetts, USA
  • 1999: Co-founder of the CHES Workshop (Cryptographic Hardware and Embedded Systems)
  • since 2001: Chair for Embedded Security, ECE Department, Ruhr-Universität Bochum
  • 2003: co-founder of ESCRYPT GmbH - Embedded Security (now part of Bosch)
  • 2004-2007, 2010-2012: Director of the Horst Görtz Institute for IT Security at Ruhr-Universität Bochum
  • since 2009: Affiliated Professor at the University of Massachusetts at Amherst
  • 2011: IEEE Fellow
  • 2012: Spokesperson of the research training group (Graduiertenkolleg) "Cryptography in Ubiquitous Computing"
  • Resume

Research Areas

  • Fast software algorithms for cryptographic implementations
  • Hardware architectures for cryptography
  • Physical attacks against real-world systems
  • Cryptanalytical hardware
  • Security in embedded applications such as smart cards, cars, etc.
  • Security in mobile and ad-hoc networks

Selected Talks

Important Publications

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  • Co-editor of the proceedings "Workshop on Cryptographic Hardware and Embedded Systems (CHES)" 1999-2003
  • More than 150 peer-reviewed publications in journals and conferences plus 3 patents in applied cryptography
  • Invited talks at MIT, Yale, Stanford University, University of Illinois, IBM T.J. Watson Labs und Sun Labs

Courses

additional courses

Publications

2014
A Novel Key Generating Architecture for Wireless Low-Resource Devices

Christian Zenger, Markus Chur, Jan-Felix Posielek, Gerhard Wunder, Chris­tof Paar

Fair Comparison and Evaluation of Quantization Schemes for PHY-based Key Generation

René Guillaume, Andreas Mueller , Christian Zenger, Chris­tof Paar, Andreas Czylwik - 18th International OFDM Workshop 2014, Essen, Germany

Microcontrollers as (In)Security Devices for Pervasive Computing Applications

Daehyun Strobel, David Oswald, Bastian Richter, Falk Schellenberg, Chris­tof Paar - Proceedings of the IEEE, vol. 102, no. 8, pp. 1157-1173, 2014

Proof-of-Concept: Using Homomorphic Cryptography to Provide for Privacy in Modern Vehicular Environments

Susanne Wetzel, Bernhard Borsch, Chris­tof Paar, Thomas Pöppelmann - escar Embedded Security in Cars Conference, June 18-19, 2014, Detroid Metropolitan, Michigan, USA, extended abstract

Stealthy dopant-level hardware Trojans: extended version

Georg T. Becker, Francesco Regazzoni, Chris­tof Paar, Wayne P. Burleson - Journal of Cryptographic Engineering 4.1 (2014): 19-31

Physical Security Evaluation of the Bitstream Encryption Mechanism of Altera Stratix II and Stratix III FPGAs

Pawel Swierczynski, Amir Moradi, David Oswald, Chris­tof Paar - ACM Transactions on Reconfigurable Technology and Systems, to appear.

2013
A Performance Boost for Hash-based Signatures

Thomas Eisenbarth, Ingo von Maurich, Chris­tof Paar, Xin Ye - Thomas Eisenbarth, Ingo von Mau­rich, Christof Paar, Xin Ye: A Performance Boost for Hash-Based Signatures. In Fischlin, M., Katzenbeisser, S. (eds.) Number Theory and Cryptography (Festschrift). LNCS, vol. 8260, pp. 166-182. Springer, Heidelberg (2013).

An Experimental Security Analysis of Two Satphone Standards

Benedikt Driessen, Ralf Hund, Carsten Willems, Chris­tof Paar, Thorsten Holz - ACM Transactions on Information and System Security (TISSEC), Vol. 16, No. 3, Article 10, Publication date: November 2013

Keccak und der SHA-2

Pawel Swierczynski, Gregor Leander, Chris­tof Paar - DuD - Da­ten­schutz und Da­ten­si­cher­heit Aus­ga­be 11/2013

Side-Channel Attacks on the Yubikey 2 One-Time Password Generator

David Oswald, Bastian Richter, Chris­tof Paar - RAID 2013, Rodney Bay, St. Lucia, October 23-25, 2013.

Fuming Acid and Cryptanalysis: Handy Tools for Overcoming a Digital Locking and Access Control System

Daehyun Strobel, Benedikt Driessen, Gregor Leander, Timo Kasper, David Oswald, Falk Schellenberg, Chris­tof Paar - Advances in Cryptology - CRYPTO 2013 - 33rd Annual Cryptology Conference, Santa Barbara, CA, USA, August 18-22, 2013

One Attack to Rule Them All: Collision Timing Attack versus 42 AES ASIC Cores

Amir Moradi, Oliver Mischke, Chris­tof Paar - IEEE Transactions on Computers, vol. 62, no. 9, pp. 1786-1798, Sept. 2013.

Stealthy Dopant-Level Hardware Trojans

Georg T. Becker, Francesco Regazzoni, Chris­tof Paar, Wayne P. Burleson - Work­shop on Cryp­to­gra­phic Hard­ware and Em­bed­ded Sys­tems, CHES 2013, Santa Bar­ba­ra, Ca­li­for­nia, USA, Au­gust 20 - 23, 2013 Extended version in Journal of Cryptographic Engineering, Springer, 2014

When Reverse-Engineering Meets Side-Channel Analysis–Digital Lockpicking in Practice

David Oswald, Daehyun Strobel, Falk Schellenberg, Timo Kasper, Chris­tof Paar - Selected Areas in Cryptography -- SAC 2013, Springer Berlin Heidelberg, 2014, 571-588

Rights Management with NFC Smartphones and Electronic ID Cards: A Proof of Concept for Modern Car Sharing

Timo Kasper, Alexander Kühn, David Oswald, Christian Zenger, Chris­tof Paar - 9th Workshop on RFID Security, RFIDsec 2013, July 9-11, 2013, Graz, Austria

Efficient E-Cash in Practice: NFC-Based Payments for Public Transportation System

Gesine Hinterwälder, Christian Zenger, Foteini Baldimtsi, Anna Lysyanskaya, Chris­tof Paar, Wayne P. Burleson - E. De Cristofaro and M. Wright (Eds.): PETS 2013, LNCS 7981, pp. 40–59, 2013. © Springer-Verlag Berlin Heidelberg 2013

P4R: Privacy-Preserving Pre-Payments with Refunds for Transportation Systems

Andy Rupp, Gesine Hinterwälder, Foteini Baldimtsi, Chris­tof Paar - A.-R. Sadeghi (Eds.): Financial Cryptography and Data Security 2013, Volume 7859, pp 205-212, 2013. © Springer-Verlag Berlin Heidelberg 2013

Side-Channel Attacks on the Bitstream Encryption Mechanism of Altera Stratix II - Facilitating Black-Box Analysis using Software Reverse-Engineering

Amir Moradi, David Oswald, Chris­tof Paar, Pawel Swierczynski - 21st ACM/SIGDA International Symposium on Field-Programmable Gate Arrays- FPGA 2013, pages 91-100, February 11 - 13. ACM, 2013.

SHA-3 - Portierung auf einer ATmega163 Smartcard

Pawel Swierczynski, Chris­tof Paar - 23. SMARTCARD-WORKSHOP, Tagungsband, Darmstadt, 6/7. Februar 2013.

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

Markus Dürmuth, Tim Güneysu, Markus Kasper, Chris­tof Paar, Tolga Yalcin, Ralf Zimmermann

2012
IPSecco: A Lightweight and Reconfigurable IPSec Core

Benedikt Driessen, Tim Güneysu, Elif Bilge Kavun, Oliver Mischke, Chris­tof Paar, Thomas Pöppelmann - ReConFig 2012, Cancun, Mexico, December 5-7, 2012, IEEE

PRINCE - A Low-Latency Block Cipher for Pervasive Computing Applications

Julia Borghoff, Anne Canteaut, Tim Güneysu, Elif Bilge Kavun, Miroslav Knezevic, Lars R. Knudsen, Gregor Leander, Ventzislav Nikov, Chris­tof Paar, Christian Rechberger, Peter Rombouts, Søren S. Thomsen, Tolga Yalcin - Advances in Cryptology – ASIACRYPT 2012 18th International Conference on the Theory and Application of Cryptology and Information Security, Beijing, China, December 2-6, 2012. Proceedings

Improving Side-Channel Analysis with Optimal Linear Transforms

David Oswald, Chris­tof Paar - CARDIS 2012

Side Channels as Building Blocks

Markus Kasper, Amir Moradi, Georg T. Becker, Oliver Mischke, Tim Güneysu, Chris­tof Paar, Wayne Burleson - Journal of Cryptographic Engineering, Volume 2, Number 3, pages 143-159, 2012, Springer.

Detecting Software Theft in Embedded Systems: A Side-Channel Approach

Georg T. Becker, Daehyun Strobel, Chris­tof Paar, Wayne Burleson - IEEE Transactions on Information Forensics and Security, , vol.7, no.4, pp.1144,1154, Aug. 2012

IT-Sicherheit in der Elektromobilität

Chris­tof Paar, Marko Wolf, Ingo von Maurich - ATZelektronik, volume 7, issue 4, pp 274-279, Springer, 2012.

Solving Binary Linear Equation Systems over the Rationals and Binaries

Benedikt Driessen, Chris­tof Paar - International Workshop on the Arithmetic of Finite Fields (Bochum) 2012

Pay as you Go

Foteini Baldimtsi, Gesine Hinterwälder, Andy Rupp, Anna Lysyanskaya, Chris­tof Paar, Wayne P. Burleson - 5th Workshop on Hot Topics in Privacy Enhancing Technologies (HotPETs 2012) Held in conjunction with the 12th Privacy Enhancing Technologies Symposium July 13, 2012, Vigo, Spain

Privacy Preserving Payments on Computational RFID Devices with Application in Intelligent Transportation Systems

Gesine Hinterwälder, Chris­tof Paar, Wayne P. Burleson - J.-H. Hoepman, I. Verbauwhede (Eds.): RFIDSec 2012, Volume 7739, pp 109-122, 2013. © Springer-Verlag Berlin Heidelberg 2013

Don’t Trust Satellite Phones: A Security Analysis of Two Satphone Standards

Benedikt Driessen, Ralf Hund, Carsten Willems, Chris­tof Paar, Thorsten Holz - IEEE Symposium on Security and Privacy ("Oakland"), San Francisco, CA, May 2012 - **Best Paper Award**

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

Black-Box Side-Channel Attacks Highlight the Importance of Countermeasures – An Analysis of the Xilinx Virtex-4 and Virtex-5 Bitstream Encryption Mechanism

Amir Moradi, Markus Kasper, Chris­tof Paar - Topics in Cryptology - CT-RSA 2012 - The Cryptographers' Track at the RSA Conference, San Francisco, CA, USA, February 27- March 2, 2012, pages 1-18.

2011
An Experimentally Verified Attack on Full Grain-128 Using Dedicated Reconfigurable Hardware

Itai Dinur, Tim Güneysu, Chris­tof Paar, Adi Shamir, Ralf Zimmermann - AsiaCrypt 2011, Seoul, Korea

An Efficient Method for Eliminating Random Delays in Power Traces of Embedded Software

Daehyun Strobel, Chris­tof Paar - Information Security and Cryptology - ICISC 2011 - 14th International Conference, Seoul, Korea, November 30 - December 2, 2011

Security of Wireless Embedded Devices in the Real World

Timo Kasper, David Oswald, Chris­tof Paar - Information Security Solutions (ISSE) 2011 - Securing Electronic Business Processes (November 22-23 2011, Prague, Czech Republic)

Wireless security threats: Eavesdropping and detecting of active RFIDs and remote controls in the wild

Timo Kasper, David Oswald, Chris­tof Paar - 19th International Conference on Software, Telecommunications and Computer Networks (SoftCOM)

Praktische Angriffe auf die Bitstromverschlüsselung von Xilinx FPGAs

Markus Kasper, Timo Kasper, Amir Moradi, Chris­tof Paar - Datenschutz und Datensicherheit - DuD - Ausgabe 11/2011 - http://www.dud.de/Ausgabe/2011-11.html

Seitenkanalanalyse kontaktloser SmartCards

Timo Kasper, David Oswald, Chris­tof Paar - Datenschutz und Datensicherheit - DuD - Ausgabe 11/2011 - http://www.dud.de/Ausgabe/2011-11.html

On the Vulnerability of FPGA Bitstream Encryption against Power Analysis Attacks – Extracting Keys from Xilinx Virtex-II FPGAs

Amir Moradi, Alessandro Barenghi, Timo Kasper, Chris­tof Paar - 18th ACM Conference on Computer and Communications Security, CCS 2011, Chicago, IL, USA, October 17-21, 2011, pages 111-124.

Breaking Mifare DESFire MF3ICD40: Power Analysis and Templates in the Real World

David Oswald, Chris­tof Paar - Work­shop on Cryp­to­gra­phic Hard­ware and Em­bed­ded Sys­tems, CHES 2011, Nara, Japan, Sep­tem­ber 28-Oc­to­ber 1, 2011, pages 207-222

On the Power of Fault Sensitivity Analysis and Collision Side-Channel Attacks in a Combined Setting

Amir Moradi, Oliver Mischke, Chris­tof Paar, Yang Li, Kazuo Ohta, Kazuo Sakiyama - Work­shop on Cryp­to­gra­phic Hard­ware and Em­bed­ded Sys­tems, CHES 2011, Nara, Japan, September 28-October 1, 2011, pages 292-311.

Masked Dual-Rail Precharge Logic Encounters State-of-the-Art Power Analysis Methods

Amir Moradi, Mario Kirschbaum, Thomas Eisenbarth, Chris­tof Paar - IEEE Transactions on Very Large Scale Integration Systems, Volume 20 , Issue 9, Pages 1578 - 1589, 2012.

Side-Channel Analysis of Cryptographic RFIDs with Analog Demodulation

Timo Kasper, David Oswald, Chris­tof Paar - 7th Workshop on RFID Security and Privacy 2011, RFIDSec 2011, Amherst, USA, June 26–28, 2011

7th Workshop on RFID Security and Privacy (RFIDsec)

A. Juels, K. Fu, Chris­tof Paar - Lecture Notes in Computer Science 7055, Springer, Amherst, MA, USA, June 26-27, 2011.

Practical Evaluation of DPA Countermeasures on Reconfigurable Hardware

Amir Moradi, Oliver Mischke, Chris­tof Paar - IEEE In­ter­na­tio­nal Sym­po­si­um on Hard­ware-Ori­en­ted Se­cu­ri­ty and Trust (HOST 2011), San Diego, California, USA, June 5-6, 2011, pages 154-160.

Side-channel Watermarks for Embedded Software

Georg T. Becker, Wayne Burleson, Chris­tof Paar - 9th IEEE NEWCAS Conference (NEWCAS 2011), Bordeaux, France, June 2011 (PDF ist im Anhang)

Pushing the Limits: A Very Compact and a Threshold Implementation of AES

Amir Moradi, Dipl.-Kfm. Axel Poschmann, San Ling, Chris­tof Paar, Huaxiong Wang - Advances in Cryptology - EUROCRYPT 2011 - 30th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Tallinn, Estonia, May 15-19, 2011, vo­lu­me 6632 of LNCS, pages 69-88, Sprin­ger.

The future of high-speed cryptography: new computing platforms and new ciphers

Tim Güneysu, Stefan Heyse, Chris­tof Paar - Proceedings of the 21st edition of the great lakes symposium on Great lakes symposium on VLSI (GLSVLSI '11). ACM, New York, NY, USA, 461-466. DOI=10.1145/1973009.1973112 http://doi.acm.org/10.1145/1973009.1973112

2010
Side-channel based watermarks for IP Protection

Georg T. Becker, Markus Kasper, Amir Moradi, Chris­tof Paar - COSADE 2010 - First International Workshop on Constructive Side-Channel Analysis and Secure Design

Building a Side Channel Based Disassembler

Thomas Eisenbarth, Chris­tof Paar, Björn Weghenkel - Lecture Notes in Computer Science, 2010

A Versatile Framework for Implementation Attacks on Cryptographic and Embedded Devices

Timo Kasper, David Oswald, Chris­tof Paar - Lecture Notes in Computer Science, 2010

DSPs, BRAMs, and a Pinch of Logic: Extended Recipes for AES on FPGAs

S. Drimer, Tim Güneysu, Chris­tof Paar - ACM Transactions on Reconfigurable Technology and Systems (TRETS), Vol. 3. 2010.

Breaking Elliptic Curves Cryptosystems using Reconfigurable Hardware

J. Fan, D. V. Bailey, L. Batina, Tim Güneysu, Chris­tof Paar, I. Verbauwhede - Tools for Cryptanalysis. 2010.

High-Performance Integer Factoring with Reconfigurable Devices

Ralf Zimmermann, Tim Güneysu, Chris­tof Paar - IEEE Field Programmable Logic, 83-88, IEEE Computer Society, 2010.

Breaking Elliptic Curve Cryptosystems using Reconfigurable Hardware

J. Fan, D. V. Bailey, L.Batina, Tim Güneysu, Chris­tof Paar, I. Verbauwhede - IEEE Field Programmable Logic, 133-138, IEEE Computer Society, 2010.

Cloning Cryptographic RFID Cards for 25$

Timo Kasper, Ingo von Maurich, David Oswald, Chris­tof Paar - Presented at the 5th Benelux Workshop on Information and System Security, WisSec 2010, November 29-30, 2010, Nijmegen, the Netherlands.

Chameleon: A Versatile Emulator for Contactless Smartcards

Timo Kasper, Ingo von Maurich, David Oswald, Chris­tof Paar - 13th International Conference on Information Security and Cryptology - ICISC 2010, Seoul, Korea, December 1-3, 2010, volume 6829 of LNCS, pages 189-206, Springer.

Evaluation of SHA-3 Candidates for 8-bit Embedded Processors

Stefan Heyse, Ingo von Maurich, Alexander Wild, Cornel Reuber, Johannes Rave, Thomas Pöppelmann, Chris­tof Paar, Thomas Eisenbarth - 2nd SHA-3 Candidate Conference, August 23-24, 2010, University of California, Santa Barbara, USA.

Differential Cache-Collision Timing Attacks on AES with Applications to Embedded CPUs

Andrey Bogdanov, Thomas Eisenbarth, Chris­tof Paar, M. Wienecke - Topics in Cryptology - CT-RSA 2010, LNCS, Springer-Verlag.

Secure Location Verification - A Security Analysis of GPS Signal Authentication

Georg T. Becker, Sherman C. Lo, David S. De Lorenzo, Per K. Enge, Chris­tof Paar - DBSec 2010, Rome, Italy, June 21-23, 2010, to be published in Springer LNCS.

Side-channel based watermarks for integrated circuits

Georg T. Becker, Markus Kasper, Amir Moradi, Chris­tof Paar - IEEE International Symposium on Hardware-Oriented Security and Trust (HOST 2010), AnaheimCA , USA, 13-14 June 2010.

Practical Power Analysis Attacks on Software Implementations of McEliece

Stefan Heyse, Amir Moradi, Chris­tof Paar - Post-Quantum Cryptography, Third International Workshop, PQCrypto 2010, Darmstadt, Germany, May 25-28, 2010, volume 6061 of LNCS, pages 108-125, Springer.

All You Can Eat or Breaking a Real-World Contactless Payment System

Timo Kasper, Michael Silbermann, Chris­tof Paar - Financial Cryptography and Data Security, 10 January 25-28, 2010, to be published in Springer LNCS.

2009
Transforming Write Collisions in Block RAMs into Security Applications

Tim Güneysu, Chris­tof Paar - International Conference on Field Programmable Technology Sydney, Australia, 9-11 Dec. 2009, pp. 128-134.

Lightweight Cryptography and RFID: Tackling the Hidden Overheads

Dipl.-Kfm. Axel Poschmann, Matt Robshaw, Frank Vater, Chris­tof Paar - 7th International ConferenceInternational Conference on Information Security and Cryptology 2009 - ICISC 2009. LNCS, Springer-Verlag, to appear, Seoul, Korea, Dezember 2-4, 2009.

Power Analysis of Single-Rail Storage Elements as used in MDPL

Amir Moradi, Thomas Eisenbarth, Dipl.-Kfm. Axel Poschmann, Chris­tof Paar - 12th International Conference on Information Security and Cryptology - ICISC 2009, Seoul, Korea, December 2-4, 2009.

MOLES: Malicious Off-chip Leakage Enabled by Side-channels

Lang Lin, Wayne Burleson, Chris­tof Paar - ACM/IEEE International Conference on Computer-Aided Design (ICCAD), pp. 117-122, San Jose, 2009.

Efficient Authentication Mechanisms for Navigation Systems – a Radio-Navigation Case Study

Georg T. Becker, Sherman C. Lo, David S. De Lorenzo, Di Qiu, Chris­tof Paar, Per Enge - Proceedings of the 22nd International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS 2009) pp. 901 - 912, September 22-25 2009, Savannah, GA.

Three Years of Evolution: Cryptanalysis with COPACOBANA Special-purpose Hardware for Attacking Cryptographic Systems 2009

Tim Güneysu, Gerd Pfeiffer, Chris­tof Paar, Manfred Schimmler - SHARCS 2009, Lausanne, Switzerland. September 9-10, 2009.

Crypto Engineering: Some History and Some Case Studies

Chris­tof Paar - Workshop on Cryptographic Hardware and Embedded Systems 2009, CHES 2009, Lausanne, Switzerland. September 6-9, 2009.

KeeLoq and Side-Channel Analysis --- Evolution of an Attack

Chris­tof Paar, Thomas Eisenbarth, Markus Kasper, Timo Kasper, Amir Moradi - 6th IEEE Workshop on Fault Diagnosis and Tolerance in Cryptography - FDTC 2009.Lausanne, Switzerland, September 6, 2009.

MicroEliece: McEliece for Embedded Devices

Thomas Eisenbarth, Tim Güneysu, Stefan Heyse, Chris­tof Paar - Workshop on Cryptographic Hardware and Embedded Systems 2009, CHES 2009, Lausanne, Switzerland. September 6-9, 2009.

Trojan Side-Channels: Lightweight Hardware Trojans through Side-Channel Engineering

Lang Lin, Markus Kasper, Tim Güneysu, Chris­tof Paar, Wayne Burleson - Workshop on Cryptographic Hardware and Embedded Systems 2009, CHES 2009, Lausanne, Switzerland. September 6-9, 2009.

A Comparative Study of Mutual Information Analysis under a Gaussian Assumption

Amir Moradi, Nima Mousavi, Chris­tof Paar, Mahmoud Salmasizadeh - 10th International Workshop on Information Security Applications, WISA 2009, Busan, Korea. August 25-27, 2009.

EM Side-Channel Attacks on Commercial Contactless Smartcards using Low-Cost Equipment

Timo Kasper, David Oswald, Chris­tof Paar - 10th International Workshop on Information Security Applications, WISA 2009, Busan, Korea. August 25-27, 2009.

Secure IP-Block Distribution for Hardware Devices

Jorge Guajardo Merchan, Tim Güneysu, Sandeep Kumar, Chris­tof Paar - IEEE International Workshop on Hardware-Oriented Security and Trust - HOST 2009, San Francisco, USA, 27. Juli 2009.

One-touch Financial Transaction Authentication

Daniel V. Bailey, John G. Brainard, Sebastian Rohde, Chris­tof Paar - SECRYPT 2009, Proceedings of the International Conference on Security and Cryptography, Milan, Italy, Juli 7-10, 2009.

New Methods for Cost-Effective Side-Channel Attacks on Cryptographic RFIDs

Timo Kasper, David Oswald, Chris­tof Paar - Workshop on RFID Security 2009, RFIDSec 2009, Leuven, Belgium, 30. Juni - 2.Juli, 2009.

Breaking KeeLoq in a Flash: On Extracting Keys at Lightning Speed

Markus Kasper, Timo Kasper, Amir Moradi, Chris­tof Paar - 2nd International Conference on Cryptology in Africa, Progress in Cryptology - AFRICACRYPT 2009, Gammarth, Tunisia, 21-25 Juni, 2009.

Green Car Security: IT-Sicherheit und Elektromobilität

Chris­tof Paar, Jan Pelzl, Andy Rupp, Kai Schramm, André Weimerskirch - DACH Security 2009, Ruhr-Universität Bochum, Bochum, Germany, Mai, 19-20, 2009.

Cryptography is Feasible on 4-Bit Microcontrollers - A Proof of Concept

Markus Vogt, Dipl.-Kfm. Axel Poschmann, Chris­tof Paar - International IEEE Conference on RFID, Orlando, Florida, USA, April, 27 - 28, 2009.

Design Space Exploration of PRESENT Implementations for FPGAs

Mohamad Sbeiti, Michael Silbermann, Dipl.-Kfm. Axel Poschmann, Chris­tof Paar - Proceedings of the 5th Southern Programmable Logic Conference -- SPL'09, Sao Carlos, Brazil, April 1 - 3, 2009.

Evaluating Resistance of MCML Technology to Power Analysis Attacks Using a Simulation-Based Methodology

Francesco Regazzoni, Thomas Eisenbarth, Dipl.-Kfm. Axel Poschmann, Johann Großschädl, Frank Gurkaynak, Marco Macchetti, Zeynep Toprak, Laura Pozzi, Chris­tof Paar, Yusuf Leblebici, Paolo Ienne - Transactions on Computational Science IV, 2009.

Securing Green Cars: IT Security in Next-Generation Electric Vehicle Systems

Chris­tof Paar, Andy Rupp, Kai Schramm, André Weimerskirch, Wayne Burleson - Accepted at the 2009 Annual Meeting and Exposition of the Intelligent Transportation Society of America.

Understanding Cryptography: A Textbook for Students and Practitioners

Chris­tof Paar, Jan Pelzl - Springer Monograph Series, 2009.

2008
Enhancing COPACOBANA for Advanced Applications in Cryptography and Cryptanalysis

Tim Güneysu, Chris­tof Paar, Gerd Pfeiffer, Manfred Schimmler - International Conference on Field Programmable Logic and Applications - FPL 2008, Heidelberg, Germany, September 8 - 10, 2008.

Fast Hash-Based Signatures on Constrained Devices

Sebastian Rohde, Thomas Eisenbarth, Erik Dahmen, Johannes Buchmann, Chris­tof Paar - Proceedings of the 8th Smart Card Research and Advanced Application IFIP Conference -- CARDIS 2008. September 8-11, 2008.

Ultra-Lightweight Implementations for Smart Devices - Security for 1000 Gate Equivalents

Carsten Rolfes, Dipl.-Kfm. Axel Poschmann, Gregor Leander, Chris­tof Paar - Proceedings of the 8th Smart Card Research and Advanced Application IFIP Conference -- CARDIS 2008. September 8-11, 2008.

On the Power of Power Analysis in the Real World: A Complete Break of the KeeLoq Code Hopping Scheme

Thomas Eisenbarth, Timo Kasper, Amir Moradi, Chris­tof Paar, Mahmoud Salmasizadeh, Mohammad T. Manzuri Shalmani - 28th International Cryptology Conference -- CRYPTO 2008. Santa Barbara, California, USA. August 17-21, 2008.

Hash Functions and RFID Tags: Mind the Gap

Andrey Bogdanov, Gregor Leander, Chris­tof Paar, Dipl.-Kfm. Axel Poschmann, Matthew Robshaw, Yannick Seurin - 10. International Workshop on Cryptographic Hardware and Embedded Systems - CHES 2008, Washington, USA. August 10 - 13, 2008.

Ultra High Performance ECC over NIST Primes on Commercial FPGAs

Tim Güneysu, Chris­tof Paar - 10. International Workshop on Cryptographic Hardware and Embedded Systems - CHES 2008, Washington, USA. August 10 - 13, 2008.

Sicherheit moderner Funktüröffnersysteme

Thomas Eisenbarth, Timo Kasper, Chris­tof Paar - Datenschutz und Datensicherheit - DuD Volume 32 Ausgabe 8 - August 2008 - http://www.springerlink.com/content/1614-0702/32/8/ - http://www.dud.de/

Fast Multivariate Signature Generation in Hardware: The Case of Rainbow

S. Balasubramanian, Andrey Bogdanov, Andy Rupp, J. Ding, H. W. Carter, Chris­tof Paar - In 19th IEEE International Conference on Application-specific Systems, Architectures and Processors — ASAP 2008, Leuven, Belgium, Juli 2-4, 2008.

Efficient implementation of eSTREAM ciphers on 8-bit AVR microcontrollers

Gordon Meiser, Thomas Eisenbarth, Kerstin Lemke-Rust, Chris­tof Paar - 3rd International Symposium on Industrial Embedded Systems -- SIES 2008. Montpellier - Le Grande Motte, France. Juni 11-13, 2008.

Protecting Multiple Cores in a Single FPGA Design 8/2008

Saar Drimer, Tim Güneysu, Markus G. Kuhn, Chris­tof Paar - Technical Report/Draft, written 5/2008, available on-line.

DSPs, BRAMs and a Pinch of Logic: New recipes for AES on FPGAs

Saar Drimer, Tim Güneysu, Chris­tof Paar - 16th Annual IEEE Symposium on Field-Programmable Custom Computing Machines - FCCM 2008, Stanford University, California, April 13-15, 2008.

Security Requirements Engineering in the Automotive Domain: On Specification Procedures and Implementational Aspects

Chris­tof Paar, Marko Wolf - SICHERHEIT 2008: Sicherheit — Schutz und Zuverlässigkeit, 4. Jahrestagung des Fachbereichs Sicherheit der Gesellschaft für Informatik e.V., Saarbrücken, Germany. Proceedings, LNI, April 2 - 4, 2008.

Comparison of Innovative Signature Algorithms for WSNs

Benedikt Driessen, Dipl.-Kfm. Axel Poschmann, Chris­tof Paar - First ACM Conference on Wireless Network Security, WiSec 2008, Alexandria, Virginia, USA. Proceedings, ACM Press. 31.03 - 02.04 2008.

Security for 1000 Gate Equivalents

Carsten Rolfes, Dipl.-Kfm. Axel Poschmann, Chris­tof Paar - Secure Component and System Identification, SECSI 2008, Berlin, Germany. März, 17-18 2008.

Breaking Legacy Banking Standards with Special-Purpose Hardware

Tim Güneysu, Chris­tof Paar - Conference on Financial Cryptography and Data Security, FC 2008, Cozumel, Mexiko. LNCS Proceedings, Januar, 28-31 2008.

Cryptanalysis with COPACOBANA

Tim Güneysu, Timo Kasper, Martin Novotny, Chris­tof Paar, Andy Rupp - IEEE Transactions on Computers, November 2008, vol. 57, no. 11, 2008.

2007
Dynamic Intellectual Property Protection for Reconfigurable Devices"

Tim Güneysu, Bodo Möller, Chris­tof Paar - Conference on Field-Programmable Technology, ICFPT 2007, Kitakyushu, Japan. IEEE Proceedings, pp. 169-176, Dezember 12-14 2007.

E-Passport: Cracking Basic Access Control Keys

Yifei Liu, Timo Kasper, Kerstin Lemke-Rust, Chris­tof Paar - On the move, OTM2007, Vilamoura, Algarve, Portugal, November 25-30, 2007.

Reconfigurable Trusted Computing in Hardware

Ahmad-Reza Sadeghi, Dries Schellekens, Marko Wolf, Thomas Eisenbarth, Tim Güneysu, Chris­tof Paar - Scalable Trusted Computing, ACM STC 2007, Alexandria, Virginia, USA. Proceedings, ACM Press. November 2, 2007.

A Survey of Lightweight Cryptography Implementations

Thomas Eisenbarth, Sandeep Kumar, Chris­tof Paar, Dipl.-Kfm. Axel Poschmann, L. Uhsadel - IEEE Design & Test of Computers -- Special Issue on Secure ICs for Secure Embedded Computing vol 24, no 6, pp 522-533, November 2007.

Hardware Optimierte Lightweight Block-Chiffren für RFID- und Sensor-Systeme

Dipl.-Kfm. Axel Poschmann, Chris­tof Paar - INFORMATIK 2007 -- Informatik trifft Logistik, Workshop: "Kryptologie in Theorie und Praxis", 37. Jahrestagung der Gesellschaft für Informatik e. V. (GI), Lecture Notes in Informatics (LNI) P-110, Bremen, Germany, September 27, 2007.

Power Attacks Resistance of Cryptographic S-boxes with added Error Detection Circuits

F. Regazzoni, Thomas Eisenbarth, J. Großsch¨adl, L. Breveglieri, P. Ienne, I. Koren, Chris­tof Paar - In Proceedings of the 21st IEEE International Symposium on Defect and Fault-Tolerance in VLSI Systems (DFT’07), Rome, Italy, September 26-28, 2007.

Analyzing Side Channel Leakage of Masked Implementations with Stochastic Methods

Kerstin Lemke-Rust, Chris­tof Paar - 12th European Symposium On Research In Computer Security (ESORICS 2007), Dresden, Germany, September 24 - 26, 2007.

Gaussian Mixture Models for Higher-Order Side Channel Analysis

Kerstin Lemke-Rust, Chris­tof Paar - Cryptographic Hardware and Embedded Systems - CHES 2007, 9. International Workshop, Vienna, Austria, Proceedings. LNCS, Springer-Verlag, September 10 - 13, 2007.

PRESENT: An Ultra-Lightweight Block Cipher

Andrey Bogdanov, L.R. Knudsen, G. Leander, Chris­tof Paar, Dipl.-Kfm. Axel Poschmann, M.J.B. Robshaw, Y. Seurin, C. Vikkelsoe - Cryptographic Hardware and Embedded Systems - CHES 2007, 9. International Workshop, Vienna, Austria, Proceedings. LNCS, Springer-Verlag, September 10 - 13, 2007.

E-Passport: Cracking Basic Access Control Keys with Copacobana

Yifei Liu, Timo Kasper, Kerstin Lemke-Rust, Chris­tof Paar - Special-purpose Hardware for Attacking Cryptographic Systems, SHARCS Workshop 2007, Vienna, Austria, September 9-10, 2007.

Efficient Hash Collision Search Strategies on Special-Purpose Hardware

Tim Güneysu, Chris­tof Paar, S. Schäge - Special-purpose Hardware for Attacking Cryptographic Systems, SHARCS Workshop 2007, Vienna, Austria, September 9-10, 2007.

Parallel Computing with Low-Cost FPGAs: A Framework for COPACOBANA

Tim Güneysu, Chris­tof Paar, Jan Pelzl, G. Pfeiffer, M. Schimmler, C. Schleiffer - ParaFPGA Symposioum LNI 2007, Jülich, Germany, September 4 - 7, 2007.

A State-of-the-art Elliptic Curve Cryptographic Processor Operating in the Frequency Domain

S. Baktir, Sandeep Kumar, Chris­tof Paar, B. Sunar - Mobile Networks and Applications (MONET) Journal, Special Issue on Next Generation Hardware Architectures for Secure Mobile Computing, vol 12, no 4, pp 259-270, September 2007.

A Simulation-Based Methodology for Evaluating the DPA-Resistance of Cryptographic Functional Units with Application to CMOS and MCML Technologies

F. Regazzoni, S. Badel, Thomas Eisenbarth, J. Großsch¨adl, Dipl.-Kfm. Axel Poschmann, Z. Toprak, M. Macchetti, L. Pozzi, Chris­tof Paar, Y. Leblebici, P. Ienne - in Proceedings of International Conference on Embedded Computer Systems: Architectures, Modeling, and Simulation (SAMOS IC 07), Samos, Greece, 16-19 July 2007.

A Lightweight Hardware Implementation of the Stream Cipher VEST-4

Timo Grendrullis, Timo Kasper, Chris­tof Paar - Western European Workshop on Research in Cryptology, WeWORC Workshop 2007, Bochum, Germany, July 4-6, 2007.

Efficient Hash Collision Search Strategies on Special-Purpose Hardware

Tim Güneysu, Chris­tof Paar, Sven Schäge - Western European Workshop on Research in Cryptology, WeWORC Workshop 2007, Bochum, Germany, July 4-6, 2007.

Enabling Full-Size Public-Key Algorithms on 8-bit Sensor Nodes

Leif Uhsade, Dipl.-Kfm. Axel Poschmann, Chris­tof Paar - European Workshop on Security and Privacy in Ad hoc and Sensor Networks 2007 (ESAS 2007), Cambridge, UK July 2-3, 2007.

An Efficient General Purpose Elliptic Curve Cryptography Module for Ubiquitous Sensor Networks

Leif Uhsadel, Dipl.-Kfm. Axel Poschmann, Chris­tof Paar - Software Performance Enhancement for Encryption and Decryption (SPEED 2007), Amsterdam, NL Juni 11-12, 2007

Performance Analysis of Contemporary Light-Weight Block Ciphers on 8-bit Microcontrollers

Sören Rinne, Thomas Eisenbarth, Chris­tof Paar - Software Performance Enhancement for Encryption and Decryption (SPEED 2007), Amsterdam, NL Juni 11-12, 2007

New Protection Mechanisms for Intellectual Property in Reconfigurable Logic

Tim Güneysu, Bodo Möller, Chris­tof Paar - Proceedings: 15th Annual IEEE Symposium on Field-Programmable Custom Computing Machines. IEEE, 2007, pp. 287-288, Napa, California, April 23-25, 2007.

An Embedded System for Practical Security Analysis of Contactless Smartcards

Timo Kasper, Dario Carluccio, Chris­tof Paar - Workshop in Information Security Theory and Practices 2007, Springer LNCS 4462, pp. 150-160, Heraklion, Crete, Greece, Mai 2007.

New Lightweight Crypto Algorithms for RFID

G. Leander, Chris­tof Paar, Dipl.-Kfm. Axel Poschmann, Kai Schramm - IEEE International Symposium on Circuits and Systems - ISCAS 2007, New Orleans, Louisana, USA, Mai 27-30, 2007.

New Lightweight DES Variants

G. Leander, Chris­tof Paar, Dipl.-Kfm. Axel Poschmann, Kai Schramm - Fast Software Encryption 2007 - FSE 2007, Luxembourg City, Luxembourg, März 26-28, 2007.

Software Implementation of eSTREAM Profile I Ciphers on embedded 8-bit AVR Microcontrollers

G. Meiser, Thomas Eisenbarth, Kerstin Lemke-Rust, Chris­tof Paar - The State of the Art of Stream Ciphers - SASC 2007, Bochum, NRW, Germany, Januar 31- Februar 1, 2007

Embedded security in a pervasive world

Chris­tof Paar, André Weimerskirch - Elsevier Science’s Information Security Technical Report, vol 12, no 3, pp 155-161, 2007.

2006
A Compact Implementation of Edon80

Markus Kasper, Sandeep Kumar, Kerstin Lemke-Rust, Chris­tof Paar - The eSTREAM Project - eSTREAM Phase 3

Breaking Ciphers with COPACOBANA - A Cost-Optimized Parallel Code Breaker

Sandeep Kumar, Chris­tof Paar, Jan Pelzl, G. Pfeiffer, M. Schimmler - Cryptographic Hardware and Embedded Systems - CHES 2006, 8th International Workshop, Yokohama, Japan, Proceedings. LNCS, Springer-Verlag, Oktober 10 - 13, 2006.

Templates vs. Stochastic Methods

Benedikt Gierlichs, Kerstin Lemke-Rust, Chris­tof Paar - Cryptographic Hardware and Embedded Systems - CHES 2006, 8th International Workshop, Yokohama, Japan, Oktober 10 - 13, 2006.

Optimum Digit Serial GF(2^m) Multipliers for Curve Based Cryptography

Sandeep Kumar, Thomas Wollinger, Chris­tof Paar - IEEE Transactions on Computers, Volume 55, Issue 10, pp. 1306-1311, October 2006.

Efficient Hardware Implementation of Finite Fields with Applications to Cryptography

Jorge Guajardo Merchan, Tim Güneysu, Sandeep Kumar, Chris­tof Paar, Jan Pelzl - Acta Applicandae Mathematicae: An International Survey Journal on Applying Mathematics and Mathematical Applications, Volume 93, Numbers 1-3, pp. 75-118, September 2006.

Efficient Software-Implementation of Finite Fields with Applications to Cryptography

Jorge Guajardo Merchan, Sandeep Kumar, Chris­tof Paar, Jan Pelzl - Acta Applicandae Mathematicae: An International Survey Journal on Applying Mathematics and Mathematical Applications, Volume 93, Numbers 1-3, pp. 3-32, September 2006.

E-Passport: The Global Traceability or How to Feel Like an UPS Package

Dario Carluccio, Kerstin Lemke-Rust, Chris­tof Paar, Ahmad-Reza Sadeghi - 7th International Workshop on Information Security Applications (WISA 2006), Jeju Island, Korea, August 28-30, 2006.

A Family of Light-Weight Block Ciphers Based on DES Suited for RFID Applications

Dipl.-Kfm. Axel Poschmann, Gregor Leander, Kai Schramm, Chris­tof Paar - Workshop on RFID Security 2006, Graz, Austria, Juli 2006.

E-Passport: The Global Traceability or How to Feel Like an UPS Package

Dario Carluccio, Kerstin Lemke-Rust, Chris­tof Paar, Ahmad-Reza Sadeghi - Workshop on RFID Security 2006, Graz, Austria, Juli 2006.

Are standards compliant elliptic curve cryptosystems feasible on RFID?

Sandeep Kumar, Chris­tof Paar - Workshop on RFID Security 2006, Graz, Austria, Juli 2006.

A Configuration Concept for a Massive Parallel FPGA Architecture

Sandeep Kumar, Chris­tof Paar, Jan Pelzl, G. Pfeiffer, M. Schimmler - International Conference on Computer Design - CDES'06, Las Vegas,USA, Juni 26-29, 2006.

A Parallel Hardware Architecture for fast Gaussian Elimination over GF(2)

Andrey Bogdanov, M. Mertens, Chris­tof Paar, Jan Pelzl, Andy Rupp - IEEE Symposium on Field-Programmable Custom Computing Machines, FCCM 2006, Napa, CA, USA, April 24-26, 2006.

COPACOBANA - A Cost-Optimized Special-Purpose Hardware for Code-Breaking

Sandeep Kumar, Chris­tof Paar, Jan Pelzl, G. Pfeiffer, M. Schimmler - poster summary, IEEE Symposium on Field-Programmable Custom Computing Machines, FCCM 2006, Napa, CA,USA, April 24-26, 2006.

On the Security of Elliptic Curve Cryptosystems against Attacks with Special-Purpose Hardware

Tim Güneysu, Chris­tof Paar, Jan Pelzl - 2nd Workshop on Special-purpose Hardware for Attacking Cryptographic Systems - SHARCS 2006, Cologne, Germany, April 3-4, 2006,.

How to Break DES for Euro 8,980

Sandeep Kumar, Chris­tof Paar, Jan Pelzl, G. Pfeiffer, Andy Rupp, M. Schimmler - 2nd Workshop on Special-purpose Hardware for Attacking Cryptographic Systems - SHARCS 2006, Cologne, Germany, April 3-4, 2006.

SMITH - A Parallel Hardware Architecture for fast Gaussian Elimination over GF(2)0

Andrey Bogdanov, M. Mertens, Chris­tof Paar, Jan Pelzl, Andy Rupp - 2nd Workshop on Special-purpose Hardware for Attacking Cryptographic Systems - SHARCS 2006, Cologne, Germany, April 3-4, 2006.

Seitenkanal-Analysen: Stand der Forschung in der Methodik

Kerstin Lemke-Rust, Chris­tof Paar - D-A-CH Security 2006, Universität Düsseldorf, 28.-29. März 2006.

Higher Order Masking of the AES. CT-RSA 2006, The Cryptographers' Track

Kai Schramm, Chris­tof Paar - at the RSA Conference 2006, San Jose, CA, USA, February 13-17, 2006, Proceedings. Lecture Notes in Computer Science 3860, Springer 2006.

Testing Framework for eSTREAM Profile II Candidates

L. Batina, Sandeep Kumar, J. Lano, Kerstin Lemke-Rust, N. Mentens, Chris­tof Paar, B. Preneel, K. Sakiyama, I. Verbauwhede - SASC 2006 - Stream Ciphers Revisited, Leuven, Belgium, February 2-3, 2006

Embedded Security in Cars

Kerstin Lemke-Rust, Chris­tof Paar, Marko Wolf - Springer Monograph Series, 2006.

Generalizations of the Karatsuba Algorithm for Efficient Implementations

André Weimerskirch, Chris­tof Paar - Cryptology ePrint Archive: Report 2006/224.

2005
Area-Time Efficient Hardware Architecture for Factoring Integers with the Elliptic Curve Method

Jan Pelzl, M. Simka, T. Kleinjung, J. Franke, C. Priplata, C. Stahlke, M. Drutarovsky, V. Fischer, Chris­tof Paar - IEE Proceedings on Information Security, Special Issue on Cryptographic Algorithms and Architectures for System-on-Chip, pp.67-78, vol. 152, No.1, October, 2005.

Cryptographic Component Identification: Enabler for Secure Vehicles

Katrin Höper, Chris­tof Paar, André Weimerskirch, Marko Wolf - 62nd IEEE Semiannual Vehicular Technology Conference (VTC Fall 2005), Dallas, Texas, USA. Proceedings, IEEE Press. September 25 - 28, 2005.

A Stochastic Model for Differential Side Channel Cryptanalysis

Werner Schindler, Kerstin Lemke-Rust, Chris­tof Paar - Cryptographic Hardware and Embedded Systems - - CHES 2005, 7th International Workshop, Edinburgh, UK. August 29 - September 1, 2005.

SHARK - A Realizable Hardware Architecture for Factoring 1024-bit Composites with the GNFS

J. Franke, T. Kleinjung, Chris­tof Paar, Jan Pelzl, C. Priplata, C. Stahlke - Cryptographic Hardware and Embedded Systems - - CHES 2005, 7th International Workshop, Edinburgh, UK, Proceedings. LNCS 3659, Springer-Verlag, August 29 - September 1, 2005.

Efficient Hardware Architectures for Modular Multiplication on FPGAs

D. Amanor, V. Bunimov, Chris­tof Paar, Jan Pelzl - International Conference on Field Programmable Logic, Reconfigurable Computing and Applications, FPL 2005, Tampere, Finland, August 24-28, 2005.

Cantor versus Harley: Optimization and Analysis of Explicit Formulae for Hyperelliptic Curve Cryptosystem

Thomas Wollinger, Jan Pelzl, Chris­tof Paar - IEEE Transactions on Computers, Vol. 54, No. 7, pp. 861-872, July 2005.

An Instruction-Level Distributed Processor for Symmetric-Key Cryptography

A. Elbirt, Chris­tof Paar - IEEE Transactions on Parallel and Distributed Systems, vol. 16, no. 5, pp. 468-480, May, 2005.

Hardware Factorization Based Elliptic Curve Method

M. Simka, Jan Pelzl, T. Kleinjung, J. Franke, C. Priplata, C. Stahlke, M. Drutarovsky, V. Fischer, Chris­tof Paar - IEEE Symposium on Field-Programmable Custom Computing Machines, FCCM 2005, Napa, CA, USA, April 17-20, 2005.

Digital Rights Management Systeme (DRMS) als Enabling Technology im Automobil

Chris­tof Paar, André Weimerskirch, Marko Wolf - Sicherheit 2005, Regensburg, Germany. Proceedings, LNI. April 5 - 9, 2005.

Performance of HECC Coprocessors Using Inversionfree Formulae

Thomas Wollinger, G. Bertoni, L. Breveglieri, Chris­tof Paar - International Workshop on Information Security & Hiding (ISH '05) part of the International Conference on Computational Science and its Applications (ICCSA 2005), Singapore, May 9-12, 2005.

An Efficient Hardware Architecture for Factoring large Numbers with the Elliptic Curve Method

J. Franke, T. Kleinjung, Chris­tof Paar, Jan Pelzl, C. Priplata, M. Simka, C. Stahlke - 1st Workshop on Special-purpose Hardware for Attacking Cryptographic Systems - SHARCS 2005, Paris, France, February 24-25, 2005.

SHARK - A Realizable Hardware Architecture for Factoring 1024-bit Composites with the GNFS

J. Franke, T. Kleinjung, Chris­tof Paar, Jan Pelzl, C. Priplata, C. Stahlke - 1st Workshop on Special-purpose Hardware for Attacking Cryptographic Systems - SHARCS 2005, Paris, France, February 24-25, 2005.

Encyclopedia of Cryptography and Security

Chris­tof Paar - Advisory Board Member of the "Encyclopedia of Cryptography and Security", responsible for cryptographic implementation entries, Kluwer-Springer, 2005.

IEE Proceedings on Computer & Digital Techniques

M. McLoone, Chris­tof Paar, R. Woods (Eds.) - Special Issue on Cryptographic Algorithms and Architectures for System-on-Chip, 2005.

2004
Optimal Tower Fields for Hyperelliptic Curve Cryptosystems

Selcuk Baktir, Jan Pelzl, Thomas Wollinger, Berk Sunar, Chris­tof Paar - 38th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, California, USA, November 7-10, 2004.

Some Thoughts about Implementation Properties of Stream Ciphers

Sandeep Kumar, Kerstin Lemke-Rust, Chris­tof Paar - SASC - State of the Art of Stream Ciphers Workshop, Brugge, Belgium, October 14-15, 2004.

Security in Automotive Bus Systems

Chris­tof Paar, André Weimerskirch, Marko Wolf - Automotive — Safety & Security 2004, Stuttgart, Germany. Proceedings. October 6 - 7, 2004.

Architectural Support for Arithmetic in Optimal Extension Fields

Johann Großschädl, Sandeep Kumar, Chris­tof Paar - IEEE 15th International Conference on Application-specific Systems, Architectures and Processors (ASAP) 2004, Galveston, Texas, September 27-29, 2004.

Reconfigurable Instruction Set Extension for enabling ECC on an 8-bit Processor

Sandeep Kumar, Chris­tof Paar - International Conference on Field-Programmable Logic and Applications (FPL) 2004, Antwerp, Belgium, August 30 - September 1, 2004.

A Collision-Attack on AES Combining Side Channel- and Differential-Attack

Kai Schramm, Gregor Leander, Patrick Felke, Chris­tof Paar - Cryptographic Hardware and Embedded Systems - CHES 2004, 6th International Workshop, Cambridge, MA, USA, August, 2004.

DPA on n-bit sized Boolean and Arithmetic Operations and its Application to IDEA, RC6 and the HMAC-Construction

Kerstin Lemke, Kai Schramm, Chris­tof Paar - Cryptographic Hardware and Embedded Systems - CHES 2004, 6th International Workshop, Cambridge, MA, USA, August 2004

Hyperelliptic Curve Coprocessors on a FPGA

H. Kim, Thomas Wollinger, Y. Choi, K. Chung, Chris­tof Paar - Workshop on Information Security Applications - WISA, Jeju Island, Korea, August 23-25, 2004.

Elliptic and hyperelliptic curves on embedded µP

Thomas Wollinger, Jan Pelzl, V. Wittelsberger, Chris­tof Paar, G. Saldamli, C. Koc - ACM Transactions in Embedded Computing Systems, Vol 3, No 3, pp 509-533, August 2004.

Security on FPGAs: State-of-the-art implementations and attacks

Thomas Wollinger, Jorge Guajardo Merchan, Chris­tof Paar - ACM Transactions in Embedded Computing Systems, Vol 3, No 3, pp 534-574, August 2004.

Case Study: Compiler Comparison for an Embedded Cryptographical Application

E. Barteska, Chris­tof Paar, Jan Pelzl, V. Wittelsberger, Thomas Wollinger - The 2004 International Conference on Embedded Systems and Applications - ESA 2004, Las Vegas, Nevada, USA, June 21-24, 2004

Finding Optimum Parallel Coprocessor Design for Genus 2 Hyperelliptic Curve Cryptosystems

G. Bertoni, L. Breveglieri, Thomas Wollinger, Chris­tof Paar - International Conference on Information Technology: Coding and Computing - ITCC, Las Vegas, Nevada, USA, April 5-7, 2004.

High Performance Arithmetic for Hyperelliptic Curve Cryptosystems of Genus Two

Jan Pelzl, Thomas Wollinger, Chris­tof Paar - International Conference on Information Technology: Coding and Computing - ITCC, Las Vegas, Nevada, USA, April 5-7, 2004.

Eingebettete Sicherheit: State-of-the-art

Chris­tof Paar, Jan Pelzl, Kai Schramm, André Weimerskirch, Thomas Wollinger - D-A-CH Security 2004, University of Basel, March 30-31, 2004.

Embedded Security in Automobilanwendungen

Chris­tof Paar - (Embedded Security in Automotive Applications, in German), Elektronik Automotive, January, 2004.

European Workshop on Security in Ad-hoc and Sensor Networks (ESAS 2004)

C. Castelluccia, H. Hartenstein, Chris­tof Paar, D. Westhoff (Eds.) - Lecture Notes in Computer Science Heidelberg 3313, Heidelberg, Germany, 2004.

Security aspects of FPGAs in cryptographic applications

Thomas Wollinger, Chris­tof Paar - chapter in "New Algorithms, Architectures, and Applications for Reconfigurable Computing", Wolfgang Rosenstiel and Patrick Lysaght (eds.), Kluwer, 2004.

2003
Embedded End-to-End Wireless Security with ECDH Key Exchange

Sandeep Kumar, Marco Girimondo, André Weimerskirch, Chris­tof Paar, Arun Patel, Arvinderpal S.Wander - 46th IEEE Midwest Symposium On Circuits and Systems, Cairo , Egypt, December 27-30, 2003.

Proceedings of the Workshop on Cryptographic Hardware and Embedded Systems (CHES 2003)

C. Walter, C. Koc, Chris­tof Paar - Lecture Notes in Computer Science 2779, Springer Verlag, Cologne, Germany, September 08-10, 2003.

Eingebettete Sicherheit und Kryptographie im Automobil: Eine Einführung

Chris­tof Paar, Thomas Wollinger - (Embedded Security and Cryptography in Automobiles: An Introduction, in German), Informatik 2003, Workshop: Automotive SW Engineering & Concepts, 33. Annual Meeting of the GI, Frankfurt/M., September 29 - October 2, 2003.

Hyperelliptic Curve Cryptosystems: Closing the Performance Gap to Elliptic Curves

Jan Pelzl, Thomas Wollinger, Jorge Guajardo Merchan, Chris­tof Paar - Workshop on Cryptographic Hardware and Embedded Systems - CHES, September 7-10, 2003.

How Secure Are FPGAs in Cryptographic Applications? (Long Version)

Thomas Wollinger, Chris­tof Paar - IACR, http://eprint.iacr.org, cryptology, ePrint archive: Report 2003/119, Juni 5, 2003.

Efficient GF(pm) Arithmetic Architectures for Cryptographic Applications

G. Bertoni, Jorge Guajardo Merchan, Sandeep Kumar, G. Orlando, Chris­tof Paar, Thomas Wollinger - In Marc Joye (Ed.): The Cryptographers' Track at the RSA Conference - CT-RSA 2003, volume LNCS 2612, pp. 158-175, San Francisco, CA, USA, April 13-17, 2003.

IEEE Transactions on Computers

C. Koc, Chris­tof Paar - Special issue on cryptographic hardware and embedded systems, April, 2003.

Cryptography on FPGAs: State of the Art Implementations and Attacks

Thomas Wollinger, Jorge Guajardo Merchan, Chris­tof Paar - to appear in the special issue on Embedded Systems and Security of the ACM Transactions in Embedded Computing Systems (TECS), March, 2003.

Elliptic & Hyperelliptic Curves on Embedded µP

Thomas Wollinger, Jan Pelzl, V. Wittelsberger, Chris­tof Paar, G. Saldamli, C. Koc - to appear in the special issue on Embedded Systems and Security of the ACM Transactions in Embedded Computing Systems (TECS), March, 2003.

A New Class of Collision Attacks and its Application to DES

K. Schramm, Thomas Wollinger, Chris­tof Paar - In proceedings of Fast Software Encryption 2003 (FSE), pp. 217-230, Lund, Sweden, February 24-26, 2003.

Cryptography in Embedded Systems: An Overview

Thomas Wollinger, Jorge Guajardo Merchan, Chris­tof Paar - (Invited Paper), In proceedings of the Embedded World 2003 Exhibition and Conference, pp.735-744, Design & Elektronik, Nuernberg, Germany, February 18-20, 2003.

2002
Hardware Architectures proposed for Cryptosystems Based on Hyperelliptic Curves

Thomas Wollinger, Chris­tof Paar - 9th IEEE International Conference on Electronics, Circuits and Systems - ICECS 2002, Dubrovnik, Croatia, September 15-18, 2002.

Proceedings of the Workshop on Cryptographic Hardware and Embedded Systems (CHES 2002)

B. Kaliski, C. Koc, Chris­tof Paar - Lecture Notes in Computer Science 2523, Springer Verlag, San Francisco Bay (Redwood City), USA, August 13-15, 2002.

Area Efficient GF(p) Architectures for GF(pm) Multipliers

Jorge Guajardo Merchan, Thomas Wollinger, Chris­tof Paar - In proceedings of the 45th IEEE International Midwest Symposium on Circuits and Systems - MWSCAS 2002, Tulsa, Oklahoma, August 4-7, 2002.

Itoh-Tsujii Inversion in Standard Basis and Its Application in Cryptography and Codes

Jorge Guajardo Merchan, Chris­tof Paar - Designs, Codes and Cryptography, 25, pp. 207-216, 2002.

2001
An FPGA-Based Performance Evaluation of the AES Block Cipher Candidate Algorithm Finalists

A. Elbirt, W. Yip, B. Chetwynd, Chris­tof Paar - IEEE Transactions on VLSI, vol. 9, no. 4, pp. 545, August, 2001.

Elliptic Curve Cryptography on a Palm OS Device

André Weimerskirch, Chris­tof Paar, S. Chang Shantz - Presented at The 6th Australasian Conference on Information Security and Privacy (ACISP 2001), Sydney, Australia, July 11-13 2001.

High Radix Montgomery Modular Exponentiation on Reconfigurable Hardware

T. Blum, Chris­tof Paar - IEEE Transactions on Computers, vol 50, no. 7, pp. 759-764, July, 2001.

A scalable GF(p) elliptic curve processor architecture for programmable hardware"

G. Orlando, Chris­tof Paar - Cryptographic Hardware and Embedded Systems, CHES 2001, Paris, France, May 14-16, 2001.

Proceedings of the Workshop on Cryptographic Hardware and Embedded Systems (CHES 2001)

C. Koc, D. Naccache, Chris­tof Paar - Lecture Notes in Computer Science 2162, Springer Verlag, Paris, France, May 14-16, 2001.

Efficient Implementation of Elliptic Curve Cryptosystems on the TI MSP430x33x Family of Microcontrollers

Jorge Guajardo Merchan, R. Bluemel, U. Krieger, Chris­tof Paar - Presented at the International Workshop on Practice and Theory in Public Key Cryptography (PKC 2001), Cheju Island, Korea, February 13-15, 2001.

Efficient Arithmetic in Finite Field Extensions with Application in Elliptic Curve Cryptography

D. Bailey, Chris­tof Paar - Journal of Cryptology, vol. 14, no. 3, pp. 153-176 , 2001.

2000
Elliptic Curve Cryptography on Smart Cards Without Coprocessors

A. Woodbury, D. Bailey, Chris­tof Paar - Presented at the Fourth Smart Card Research and Advanced Applications (CARDIS 2000) Conference, Bristol, UK, September 20-22, 2000.

A high-performance reconfigurable elliptic curve processor for GF(2m)

G. Orlando, Chris­tof Paar - Cryptographic Hardware and Embedded Systems, CHES 2000, Worcester MA, USA, August 17-18, 2000.

Proceedings of the Workshop on Cryptographic Hardware and Embedded Systems (CHES 2000)

C. Koc, Chris­tof Paar - Lecture Notes in Computer Science 1965, Springer Verlag, Worcester Polytechnic Institute, Worcester, USA, August 17-18, 2000.

Squaring Architecture for GF(2^m) and its Applications in Cryptographic Systems

G. Orlando, Chris­tof Paar - Electronic Letters, vol. 36, no. 13, pp. 1116-1117, June, 2000.

An FPGA Implementation and Performance Evaluation of the AES Block Cipher Candidate Algorithm Finalists

A. J. Elbirt, W. Yip, B. Chetwynd, Chris­tof Paar - The Third Advanced Encryption Standard (AES3) Candidate Conference, New York, USA, April 13-14, 2000.

How Well Are High-End DSPs Suited for the AES Algorithms? AES Algorithms on the TMS320C6x DSP

Thomas Wollinger, M. Wang, Jorge Guajardo Merchan, Chris­tof Paar - The Third Advanced Encryption Standard (AES3) Candidate Conference, New York, USA, April 13-14, 2000.

An FPGA Implementation and Performance Evaluation of the Serpent Block Cipher

A. Elbirt, Chris­tof Paar - Eighth ACM International Symposium on Field-Programmable Gate Arrays, Monterey, California, February 10-11, 2000.

1999
Algorithmenunabhängige Krypto-Hardware

Chris­tof Paar - (Algorithm Independent Crypto Hardware, in German), Datenschutz und Datensicherheit, vol. 23, no. 10, pp. 562-564, October, 1999.

DES auf FPGAs

J.-P. Kaps, Chris­tof Paar - (DES on FPGAs, in German) Datenschutz und Datensicherheit, vol. 23, no. 10, pp. 565-569, October, 1999.

Fast Arithmetic for Public-Key Algorithms in Galois Fields with Composite Exponents

Chris­tof Paar, P. Fleischmann, P. Soria-Rodriguez - IEEE Transactions on Computers, vol. 48, no. 10, pp. 1025-1034, October, 1999.

An Algorithm-Agile Cryptographic Co-processor Based on FPGAs

Chris­tof Paar, B. Chetwynd, T. Connor, S. Y. Deng, S. Marchant - The SPIE's Symposium on Voice, Video, and Data Communications, Boston, MA, September 19-22, 1999

Towards an FPGA Architecture Optimized for Public-Key Algorithms

A. Elbirt, Chris­tof Paar - The SPIE's Symposium on Voice, Video, and Data Communications, Boston, MA. September 19-22, 1999.

Proceedings of the Workshop on Cryptographic Hardware and Embedded Systems (CHES ’99)

C. Koc, Chris­tof Paar - "", Lecture Notes in Computer Science 1717, Springer Verlag, Worcester Polytechnic Institute, Worcester, USA, August 12-13, 1999.

Cryptography in Modern Communication Systems (Extended Abstract)

Daniel V. Bailey, William Cammack, Jorge Guajardo Merchan, Chris­tof Paar - Invited presentation at TI DSPS FEST '99, Houston, Texas, USA, 1999

A Super-Serial Galois Field Multiplier for FPGAs and its Application to Public-Key Algorithms

G. Orlando, Chris­tof Paar - Seventh Annual IEEE Symposium on Field-Programmable Custom Computing Machines (FCCM 99), Napa Valley, CA, April 21-23, 1999.

Montgomery Modular Multiplication on Reconfigurable Hardware"

T. Blum, Chris­tof Paar - 14th IEEE Symposium on Computer Arithmetic (ARITH-14), Adelaide, Australia, April 14-16, 1999.

1998
Optimal Extension Fields for Fast Arithmetic in Public-Key Algorithms

D. Bailey, Chris­tof Paar - CRYPTO '98, Santa Barbara, CA, USA, August 23-27, 1998

Fast Inversion in Composite Galois Fields GF((2n)m)

Jorge Guajardo Merchan, Chris­tof Paar - 1998 IEEE International Symposium on Information Theory, MIT, Cambridge, MA, USA, August 16-21, 1998.

Fast DES Implementation for FPGAs and its Application to a Universal Key-Search Machine

J.-P. Kaps, Chris­tof Paar - 5th Annual Workshop on Selected Areas in Cryptography (SAC '98), Queen's University, Kingston, Ontario, Canada, August 17-18, 1998.

Efficient Multiplier Architectures for Galois Fields GF((2^n)^4)

Chris­tof Paar, P. Fleischmann, P. Roelse - IEEE Transactions on Computers, vol. 47, no. 2, pp. 162-170, February 1998.

1997
Efficient Algorithms for Elliptic Curve Cryptosytems

Jorge Guajardo Merchan, Chris­tof Paar - CRYPTO '97, Santa Barbara, CA, USA, August 17-21, 1997.

On Efficient Inversion in Tower Fields of Characteristic Two

J.L. Fan, Chris­tof Paar - 1997 IEEE International Symposium on Information Theory, Ulm, Germany, June 29 - July 4, 1997.

Optimized Arithmetic for Reed-Solomon Encoders

Chris­tof Paar - 1997 IEEE International Symposium on Information Theory, Ulm, Germany, June 29 - July 4, 1997.

Fast Arithmetic Architectures for Public-Key Algorithms over Galois Fields GF((2n)m)

Chris­tof Paar, P. Soria-Rodriguez - EUROCRYPT '97, Konstanz, Germany, May 11-15, 1997.

Comparison of Arithmetic Architectures for Reed-Solomon Decoders in Reconfigurable Hardware

Chris­tof Paar, M. Rosner - Fifth Annual IEEE Symposium on Field-Programmable Custom Computing Machines "FCCM '97", Nappa Valley, CA, USA, April 16-18, 1997.

Securing ATM

G. Haskins, Chris­tof Paar, S. Dempsey - 1997 RSA Data Security Conference, San Francisco, CA, USA, January 28-31, 1997.

1996
A New Architecture for a Parallel Finite Field Multiplier with Low Complexity Based on Composite Fields

Chris­tof Paar - IEEE Transactions on Computers, vol. 45, no. 7, pp. 856-861, July, 1996.

Recent Developments in Digital Wireless Network Security

G. Pierce, Chris­tof Paar - Massachusetts Telecommunication Council and UMass Technical Conference on Telecommunications, Lowell, March, 1996.

1995
Some Remarks on Efficient Inversion in Finite Fields

Chris­tof Paar - 1995 IEEE International Symposium on Information Theory, Whistler, B.C. Canada, September, 1995.

A Comparitive VLSI Synthesis of Finite Field Multipliers

Chris­tof Paar, N. Lange - 3rd International Symposium on Communication Theory and its Applications, Lake District, UK, July, 1995.

1994
Implementation of a Reprogrammable Reed-Solomon Decoder over GF(216) on a Digital Signal Processor with External Arithmetic Unit

Chris­tof Paar, O. Hooijen - Fourth International European Space Agency (ESA) Workshop on Digital Signal Processing Techniques Applied to Space Communications, King's College, London, September, 1994.

Low Complexity Parallel Multipliers for Galois Fields GF((2n)4) Based on Special Types of Primitive Polynomials

Chris­tof Paar - 1994 IEEE International Symposium on Information Theory, Trondheim, Norway, June, 1994