Rainer Steinwandt

Course Information

• MAD 2502 Introduction to Computational Mathematics (spring 2010)
• MAS 6396 Elliptic Curves (fall 2009)
• MAC 2313 Calculus-Analytic Geometry III (spring 2009)
• MAT 5932 Computational Mathematics (spring 2009)
• CIS 4362/MAT 5932 Introduction to Cryptology and Information Security (fall 2008)
• MAC 2313 Calculus-Analytic Geometry III (fall 2008)
• MAD 6478 Cryptanalysis (spring 2008)
• MAC 2313 Calculus-Analytic Geometry III (spring 2008)
• MAS 6396 Elliptic Curves (fall 2007)
• MAC 2312 Calculus-Analytic Geometry II (fall 2007)
• MAD 6209 Applying Mathematics to Information Security (summer 2007)
• MAC 2311 Calculus-Analytic Geometry I (spring 2007)
• MAS 6396 Ideals, Varieties & Algorithms (spring 2007)
• MAC 2311 Calculus-Analytic Geometry I (fall 2006)
• CIS 4362/MAT 5932 Introduction to Cryptology and Information Security (fall 2006)
• MAD 6209 Advanced Topics in Cryptology (spring 2006)
• MAD 6478 Cryptanalysis (fall 2005)

Activities

• Co-Managing Editor Journal of Mathematical Cryptology
• Editorial Board Member Designs, Codes and Cryptography
• Editorial Board Member Journal Of Universal Computer Science
• Co-Guest Editor of a special issue Hardware Architectures for Algebra, Cryptology and Number Theory of Integration, the VLSI Journal (submission deadline: July 25, 2009)
• Co-Guest Editor Special issue dedicated to Spyros Magliveras of Designs, Codes and Cryptography, vol. 55, no. 2-3, 2010
• Co-Guest Editor "Special Section on Special-Purpose Hardware for Cryptography and Cryptanalysis" of IEEE Transactions on Computers, vol. 57, no. 11, 2008
• Co-Guest Editor special issue "Applications of Algebra to Cryptography" of Discrete Applied Mathematics, vol. 156, no. 16, 2008
• Co-Guest Editor Special Issue "Mathematical Techniques in Cryptology" of Applicable Algebra in Engineering, Communication and Computing, vol. 16, no 6, 2006
• Co-organizer Dagstuhl Seminar Quantum Cryptanalysis (scheduled for September 2011)
• Co-organizer Dagstuhl Seminar Theoretical Foundations of Practical Information Security
• Program Committee Member ICISC 2010 ISC 2010 CHES 2009, EUROCRYPT 2009, ICISC 2009, ISC 2009, ICISC 2008, MMICS 2008, SCC 2008, PKC 2008, SHARCS 2007, CRYPTO 2007, Inscrypt 2007, TATRACRYPT 2007, Inscrypt (formerly CISC) 2006, ETRICS 2006
• Program Chair CDFG 2009

Publications

• Part of Book

  • W. Geiselmann, H. Köpfer, A. Shamir, R. Steinwandt and E. Tromer
    "Fault-Tolerance in Hardware for Sparse Systems of Linear Equations, with Applications to Integer Factorization"
    in New Trends of Embedded Cryptographic Systems, N. Nedjah and L. de Macedo Mourelle, eds., Nova Science, 2006.
  • W. Geiselmann and R. Steinwandt
    "On Specialized Hardware for Supporting the Number Field Sieve"
    in Embedded Cryptographic Hardware, N. Nedjah and L. de Macedo Mourelle, eds., Nova Science, 2004.
  • Th. Beth, S. González, M. I. González Vasco, C. Martínez, and R. Steinwandt
    "Cryptographic Shelter for the Information Society: Modeling and Fighting Novel Attacks on Cryptographic Primitives"
    in Techno-Legal Aspects of Information Society and New Economy: an Overview, A. Mendez-Vilas, J. A. Mesa González, V. Guerrero Bote, F. Zapico Alonso, eds., Formatex, 2003.
  
  

• Journal Articles

  • R. Steinwandt and A. Suárez Corona
    "Attribute-based group key establishmemt"
    Advances in Mathematics of Communications (to appear).
  • M. Grassl, I. Ilić, S. S. Magliveras and R. Steinwandt
    "Cryptanalysis of the Tillich-Zémor hash function"
    Journal of Cryptology (to appear).
  • M. González Muñiz and R. Steinwandt
    "Security of Signature Schemes in the Presence of Key-Dependent Messages"
    Tatra Mountains Mathematical Publications (to appear).
  • R. Steinwandt
    "A ciphertext-only attack on Polly Two"
    Applicable Algebra Engineering, Communication and Computing, vol.21, no. 2, pp. 85-92, 2010.
  • M. Grassl and R. Steinwandt
    "Cryptanalysis of an Authentication Scheme Using Truncated Polynomials"
    Information Processing Letters, vol. 109, pp. 861-863. 2009.
  • R. Steinwandt and V. I. Villányi
    "A one-time signature using run-length encoding"
    Information Processing Letters, vol. 108, no. 4, pp. 179-185, 2008.
  • J.-M. Bohli, M. I. González Vasco and R. Steinwandt
    "Secure Group Key Establishment Revisited"
    International Journal of Information Security, vol. 6, no. 4, pp. 243-254, 2007.
  • W. Geiselmann and R. Steinwandt
    "Special Purpose Hardware in Cryptanalysis: The Case of 1024 Bit RSA"
    IEEE Security & Privacy, vol. 5, no. 1, pp. 63-66, 2007.
  • J.-M. Bohli, B. Glas and R. Steinwandt
    "Algebraic Cryptosystems and Side Channel Attacks: Braid Groups and DPA"
    accepted for publication in Congressus Numerantium.
  • M. I. González Vasco and R. Steinwandt
    "On ideal and subalgebra coefficients in a class of k-algebras"
    Note di Matematica, vol. 27, no. 1, pp. 77-83, 2007.
  • D. Hofheinz, J. Müller-Quade, and R. Steinwandt
    "On IND-CCA security modeling in cryptographic protocols"
    Tatra Mountains Mathematical Publications, vol. 33, pp. 83-97 , 2006.
  • M. I. González Vasco and R. Steinwandt
    "Chosen ciphertext attacks as common vulnerability of some group- and polynomial-based encryption schemes"
    Tatra Mountains Mathematical Publications, vol. 33, pp. 149-157, 2006.
  • W. Geiselmann, M. I. González Vasco and R. Steinwandt
    "Entwurf asymmetrischer kryptographischer Verfahren unter Berücksichtigung von Quantenalgorithmen"
    it-Information Technology, vol. 48, no. 6, pp. 327-331, 2006.
  • M. I. González Vasco and R. Steinwandt
    "Pitfalls in public key cryptosystems based on free partially commutative monoids and groups"
    Applied Mathematics Letters, vol. 19, no. 10, pp. 1037-1041, 2006.
  • J.-M. Bohli, S. Röhrich, and R. Steinwandt
    "Key substitution attacks revisited: taking into account malicious signers"
    International Journal of Information Security vol. 5, pp. 30-36, 2006.
  • Th. Beth, J. Müller-Quade, and R. Steinwandt
    "Computing restrictions of ideals in finitely generated k-algebras by means of Buchberger's algorithm"
    Journal of Symbolic Computation (Logic, Mathematics and Computer Science: Interactions in honor of Bruno Buchberger (60th birthday), vol. 41, no. 3-4, pp. 372-380, 2006.
  • Th. Beth, J. Müller-Quade, and R. Steinwandt
    "Cryptanalysis of a Practical Quantum Key Distribution With Polarization-Entangled Photons"
    Quantum Information and Computation, vol. 5, no. 3, pp. 181-186, 2005.
  • W. Geiselmann and R. Steinwandt
    "A Key Substitution Attack on SFLASH^v3"
    Journal of Discrete Mathematical Sciences & Cryptography, vol. 8, no. 2, pp. 137-141, 2005.
  • J.-M. Bohli, R. Steinwandt, M. I. González Vasco, and C. Martínez
    "Weak Keys in MST₁"
    Designs, Codes and Cryptography, vol. 37, no. 3, pp. 509-524, 2005.
  • M. I. González Vasco, C. Martínez, and R. Steinwandt
    "Towards a Uniform Description of Several Group Based Cryptographic Primitives"
    Designs, Codes and Cryptography, vol. 33, pp. 215-226, 2004.
  • M. I. González Vasco, D. Hofheinz, C. Martínez, and R. Steinwandt
    "On the security of two public key cryptosystems using non-abelian groups"
    Designs, Codes and Cryptography, vol. 32, pp. 207-216 (Special Issue: Proceedings of the Third Pythagorean Conference), 2004.
  • W. Geiselmann and R. Steinwandt
    "Power Attacks on a Side-Channel Resistant Elliptic Curve Implementation"
    Information Processing Letters, 91(1): 29-32, 2004.
  • M. I. González Vasco and R. Steinwandt
    "A Reaction Attack on a Public Key Cryptosystem Based on the Word Problem"
    Applicable Algebra Engineering, Communication and Computing, 14(5): 335-340, 2004.
  • W. Geiselmann, W. Meier, and R. Steinwandt
    "An Attack on the Isomorphisms of Polynomials Problem with One Secret"
    International Journal of Information Security, 2(1): 59-64, 2003.
  • M. I. González Vasco, M. Rötteler, and R. Steinwandt
    "On Minimal Length Factorizations of Finite Groups"
    Experimental Mathematics, 12(1): 1-12, 2003.
  • W. Geiselmann and R. Steinwandt
    "A Redundant Representation of GF(qⁿ) for Designing Arithmetic Circuits"
    IEEE Transactions on Computers, 52(7): 848-853, 2003.
  • J. Müller-Quade and R. Steinwandt
    "On the problem of authentication in a quantum protocol to detect traffic analysis"
    Quantum Information and Computation, 3(1): 48-54, 2003.
  • M. I. González Vasco and R. Steinwandt
    "Obstacles in Two Public Key Cryptosystems Based on Group Factorizations"
    Tatra Mountains Mathematical Publications, vol. 25, pp. 23-37, 2002.
  • W. Geiselmann, J. Müller-Quade, and R. Steinwandt
    "On "A New Representation of Elements of Finite Fields GF(2^m) Yielding Small Complexity Arithmetic Circuits""
    IEEE Transactions on Computers, 51(12): 1460-1461, 2002.
  • R. Steinwandt, W. Geiselmann, and R. Endsuleit
    "Attacking a polynomial-based cryptosystem: Polly Cracker"
    International Journal of Information Security 1(3): 143-148, 2002.
  • R. Steinwandt and W. Geiselmann
    "Cryptanalysis of Polly Cracker"
    IEEE Transactions on Information Theory 48(11): 2990-2991, 2002.
  • M. Hausdorf, W. M. Seiler, and R. Steinwandt
    "Involutive Bases in the Weyl Algebra"
    Journal of Symbolic Computation, 34(3): 181-198, 2002.
  • W. Geiselmann and R. Steinwandt
    "Cryptanalysis of a knapsack-like cryptosystem"
    Periodica Mathematica Hungarica, 45(1): 21-27, 2002.
  • W. Geiselmann, J. Müller-Quade, R. Steinwandt, and Th. Beth
    "Über Quantencomputer und Quantenkryptographie"
    DuD - Datenschutz und Datensicherheit, 26(8): 453-457, 2002.
  • Th. Beth, W. Geiselmann, and R. Steinwandt
    "Angriffe auf physikalischer Ebene"
    Spektrum der Wissenschaft; Dossier 4/2001, pp. 60-63, 2001.
  • R. Steinwandt, D. Janzing, and Th. Beth
    "On using quantum protocols to detect traffic analysis"
    Quantum Information and Computation, 1(3): 62-69, 2001.
  • W. Geiselmann and R. Steinwandt
    "Kryptoanalyse der Ruland/Schweitzer-Signatur von Bitströmen"
    DuD - Datenschutz und Datensicherheit, 25(10): 616-617, 2001.
  • M. I. González Vasco and R. Steinwandt
    "Clouds over a Public Key Cryptosystem Based on Lyndon Words"
    Information Processing Letters, vol. 80, pp. 239-242, 2001.
  • R. Steinwandt
    "On Ideal and Subalgebra Coefficients in Semigroup Algebras"
    Results in Mathematics/Resultate der Mathematik, vol. 39, pp. 183-187, 2001.
  • R. Steinwandt
    "On computing a separating transcendence basis"
    SIGSAM Bulletin, 34(4): 3-6, 2000.
  • J. Müller-Quade and R. Steinwandt
    "Recognizing Simple Subextensions of Purely Transcendental Field Extensions"
    Applicable Algebra in Engineering, Communication and Computing, 11(1): 35-41, 2000.
  • M. Schmid, R. Steinwandt, J. Müller-Quade, M. Rötteler, and Th. Beth
    "Decomposing a matrix into circulant and diagonal factors"
    Linear algebra and its applications, vol. 306, pp. 131-143, 2000.
  • J. Müller-Quade and R. Steinwandt
    "Gröbner Bases Applied to Finitely Generated Field Extensions"
    Journal of Symbolic Computation, 30(4): 469-490, 2000.
  • R. Steinwandt and J. Müller-Quade
    "Freeness, Linear Disjointness, and Implicitization-a Classical Approach"
    Beiträgezur Algebra und Geometrie/Contributions to Algebra and Geometry, 41(1): 57-66, 2000.
  • J. Müller-Quade and R. Steinwandt
    "Basic Algorithms for Rational Function Fields"
    Journal of Symbolic Computation, vol. 27, no. 2, pp. 143-170, 1999.
  
  

• Conference and Workshop Articles

  • R. Steinwandt and A. Suárez Corona
    "Identity-based non-interactive key distribution with forward security"
    accepted at 11th Spanish Conference on Cryptology and Information Security RECSI 2010.
  • V. Božović, D. Socek, R. Steinwandt and V. I. Villányi
    "Multi-authority attribute based encryption with honest-but-curious central authority"
    10th International Conference on Computational and Mathematical Methods in Science and Engineering CMMSE 2010 Proceedings, 2010.
  • C. Martínez, R. Steinwandt and A. Suárez Corona
    "Attribute-based group key establishment: a non-technical introduction"
    10th International Conference on Computational and Mathematical Methods in Science and Engineering CMMSE 2010 Proceedings, 2010.
  • K. Neupane and R. Steinwandt
    "Server-assisted long-term secure 3-party key establishment"
    accepted at SECRYPT 2010.
  • M. González Muñiz and R. Steinwandt
    "Cryptanalysis of a Message Recognition Protocol by Mashatan and Stinson"
    in International Conference on Information Security ICISC 2009, Lecture Notes in Computer Science, (to appear).
  • D. Naccache, R. Steinwandt and M. Yung
    "Reverse Public Key Encryption"
    BIOSIG 2009 Proceedings, vol. 155 of Lecture Notes in Informatics, GI, pp. 155-169, 2009.
  • W. Geiselmann and R. Steinwandt
    "Cryptanalysis of a Hash Function Proposed at ICISC 2006"
    in International Conference on Information Security ICISC 2007, K.-H. Nam and G. Rhee, eds., vol. 4817 of Lecture Notes in Computer Science, pp. 1-10, Springer 2007.
  • W. Geiselmann and R. Steinwandt
    "Non-Wafer-Scale Sieving Hardware for the NFS: Another Attempt to Cope with 1024-bit"
    in Advances in Cryptology - EUROCRYPT 2007, M. Naor, ed., vol. 4515 of Lecture Notes in Computer Science, pp. 466-481, Springer, 2007.
  • M. Abdalla, J.-M. Bohli, M. I. González Vasco, and R. Steinwandt
    "(Password) Authenticated Key Establishment: From 2-Party to Group"
    in Fourth Theory of Cryptography Conference, TCC 2007, S. P. Vadhan, ed., vol. 4392 of Lecture Notes in Computer Science, pp. 499-514, Springer, 2007.
  • J.-M. Bohli, B. Glas, and R. Steinwandt
    "Towards Provably Secure Group Key Agreement Building on Group Theory"
    in International Conference on Cryptology in Vietnam 2006, VietCrypt 2006 Proceedings, P. Q. Nguyen, ed., vol. 4341 of Lecture Notes in Computer Science, pp. 322-336, Springer, 2006.
  • J.-M. Bohli and R. Steinwandt
    "Deniable Group Key Agreement"
    in International Conference on Cryptology in Vietnam 2006, VietCrypt 2006 Proceedings, P. Q. Nguyen, ed., vol. 4341 of Lecture Notes in Computer Science, pp. 298-311, Springer, 2006.
  • W. Geiselmann, F. Januszewski, H. Köpfer, J. Pelzl, and R. Steinwandt
    "A Simpler Sieving Device: Combining ECM and TWIRL"
    in 9th International Conference on Information Security and Cryptology - ICISC 2006 Proceedings, M. S. Rhee and B. Lee, eds., vol. 4296 of Lecture Notes in Computer Science, pp. 118-135, Springer, 2006.
  • J.-M. Bohli, M. I. González Vasco, and R. Steinwandt
    "A Subliminal-free Variant of ECDSA"
    accepted at 8th Information Hiding IH 2006, Lecture Notes In Computer Science, Springer, 2006.
  • A. Groch, D. Hofheinz, and R. Steinwandt
    "A Practical Attack on the Root Problem in Braid Groups"
    in Algebraic Methods in Cryptography, L. Gerritzen, D. Goldfeld, M. Kreuzer, G. Rosenberger, and V. Shpilrain, eds., vol. 418 of Contemporary Mathematics, pp. 121-131, American Mathematical Society, 2006.
  • M. I. González Vasco, R. Steinwandt, and Jorge L. Villar
    "Towards Provable Security for Cryptographic Constructions Arising from Combinatorial Group Theory"
    in Algebraic methods in cryptography, L. Gerritzen, D. Goldfeld, M. Kreuzer, G. Rosenberger, and V. Shpilrain, eds., vol. 418 of Contemporary Mathematics, pp. 89-101, American Mathematical Society, 2006.
  • D. Raub and R. Steinwandt
    "An Algebra for Enterprise Privacy Policies Closed Under Composition and Conjunction"
    in International Conference on Emerging Trends in Information and Communication Security, ETRICS 2006 Proceedings, G. Müller, ed., vol. 3995 of Lecture Notes in Computer Science, pp. 130-144, Springer, 2006.
  • W. Geiselmann, A. Shamir, R. Steinwandt, and E. Tromer
    "Scalable Hardware for Sparse Systems of Linear Equations, with Applications to Integer Factorization"
    in Workshop on Cryptographic Hardware and Embedded Systems 2005, CHES 2005 Proceedings, J. R. Rao and B. Sunar, eds., vol. 3659 of Lecture Notes in Computer Science, pp. 131-146, Springer, 2005.
  • W. Geiselmann, H. Köpfer, R. Steinwandt, and E. Tromer
    "Improved Routing-Based Linear Algebra for the Number Field Sieve"
    in Proceedings of ITCC 2005 - Track on Embedded Cryptographic Systems, IEEE Computer Society, pp. 636-641, 2005.
  • M. I. González Vasco, C. Martínez, R. Steinwandt, and J. Villar
    "A New Cramer-Shoup like Methodology for Group Based Provably Secure Encryption Schemes"
    in Second Theory of Cryptography Conference, TCC 2005 Proceedings, J. Kilian, ed., vol. 3378 of Lecture Notes in Computer Science, pp. 495-509, Springer, 2005.
  • D. Raub, R. Steinwandt, and J. Müller-Quade
    "On the Security and Composability of the One Time Pad"
    in 31st Conference on Current Trends in Theory and Practice of Computer Science, SOFSEM 2005 Proceedings, P. Vojtáš et al., eds., vol. 3381 of Lecture Notes in Computer Science, pp. 288-297, Springer, 2005.
  • J.-M. Bohli and R. Steinwandt
    "On Subliminal Channels in Deterministic Signature Schemes"
    accepted at the 7th Annual International Conference on Information Security and Cryptology, ICISC 2004, Lecture Notes in Computer Science, Springer.
  • M. I. González Vasco, D. Pérez García, and R. Steinwandt
    "On the Security of Certain Public Key Cryptosystems Based on Rewriting Problems"
    in proceedings of the 8th Spanish Conference on Cryptology and Information Security RECSI '04, pp. 175-184, 2004.
  • M. I. González Vasco, C. Martínez, R. Steinwandt, and J. Villar
    "On Provably Secure Encryption Schemes Based on Non-Abelian Groups"
    in proceedings of the 8th Spanish Conference on Cryptology and Information Security RECSI '04, pp. 101-111, 2004.
  • M. Backes, M. Dürmuth, and R. Steinwandt
    "An Algebra for Composing Enterprise Privacy Policies"
    in 9th European Symposium on Research in Computer Security, ESORICS 2004 Proceedings, P. Samarati et al., eds., vol. 3193 of Lecture Notes in Computer Science, pp. 33-52, Springer, 2004.
  • W. Geiselmann and R. Steinwandt
    "Attacks on a Secure Group Communication Scheme with Hierarchical Access Control"
    in proceedings of 2004 IEEE International Symposium on Information Theory ISIT 2004, extended abstract, p. 14, 2004.
  • W. Geiselmann and R. Steinwandt
    "Yet Another Sieving Device"
    in RSA Conference 2004, Cryptographers' Track (CT-RSA 04) Proceedings, T. Okamoto, ed., vol. 2964 of Lecture Notes in Computer Science, pp. 278-291, Springer, 2004.
  • D. Hofheinz, J. Müller-Quade, and R. Steinwandt
    "Initiator-Resilient Universally Composable Key Exchange"
    in 8th European Symposium on Research in Computer Security, ESORICS 2003 Proceedings, E. Snekkenes and D. Gollmann, eds., vol. 2808 of Lecture Notes in Computer Science, pp. 61-84, Springer, 2003.
  • W. Geiselmann and R. Steinwandt
    "On the security of cryptographic primitives regarding technological innovations"
    in Proceedings of 33. Jahrestagung der Gesellschaft für Informatik, Informatik 2003.
  • W. Geiselmann and R. Steinwandt
    "Hardware to Solve Sparse Systems of Linear Equations over GF(2)"
    in Cryptographic Hardware and Embedded Systems, 5th International Workshop, CHES 2003 Proceedings, C.D. Walter, Ç.K. Koç, and C. Paar, eds., vol. 2779 of Lecture Notes in Computer Science, pp. 51-61, Springer, 2003.
  • D. Hofheinz and R. Steinwandt
    "A Practical Attack on Some Braid Group Based Cryptographic Primitives"
    in Public Key Cryptography, 6th International Workshop on Practice and Theory in Public Key Cryptography, PKC 2003 Proceedings, Y.G. Desmedt, ed., vol. 2567 of Lecture Notes in Computer Science, pp. 187-198, Springer, 2002.
  • W. Geiselmann and R. Steinwandt
    "A Dedicated Sieving Hardware"
    in Public Key Cryptography, 6th International Workshop on Practice and Theory in Public Key Cryptography, PKC 2003 Proceedings, Y.G. Desmedt, ed., vol. 2567 of Lecture Notes in Computer Science, pp. 254-266, Springer, 2002.
  • Th. Beth, J. Müller-Quade, and R. Steinwandt
    "Computing restrictions of ideals in finitely generated k-algebras by means of Buchberger's algorithm"
    in Proceedings of Symposium in Honor of Bruno Buchberger's 60th Birthday; Logic, Mathematics and Computer Science: Interactions (LMCS 2002), K. Nakagawa, ed., pp. 39-47, 2002.
  • W. Geiselmann, R. Steinwandt, and Th. Beth
    "Revealing 441 Key Bits of SFLASH^v2"
    in workshop record of the 3rd NESSIE Workshop, Munich, November 6-7, 2002.
  • M. I. González Vasco, C. Martínez, and R. Steinwandt
    "Un Marco Común para Varios Esquemas de Clave Pública Basados en Grupos"
    in Actas de la VII Reunión Española de Criptología y Seguridad de la Información; Tomo I, S. González, C. Martínez, eds., pp. 353-364, 2002.
  • W. Geiselmann, R. Steinwandt, and Th. Beth
    "Revealing the Affine Parts of SFLASH^v1, SFLASH^v2, and FLASH"
    in Actas de la VII Reunión Española de Criptología y Seguridad de la Información; Tomo I, S. González, C. Martínez, eds., pp. 305-314, 2002.
  • D. Hofheinz and R. Steinwandt
    "A "Differential" Attack on Polly Cracker"
    in Proceedings of 2002 IEEE International Symposium on Information Theory ISIT 2002, extended abstract, p. 211, 2002.
  • R. Steinwandt
    "Implicitizing without tag variables"
    in Proceedings of the 8th Rhine Workshop on Computer Algebra RWCA 2002, H. Kredel, W.K. Seiler, eds., pp. 217-224, 2002.
  • W. Geiselmann and R. Steinwandt
    "A Reversible Redundant Representation of Extension Fields of GF(2^m)"
    in 3. Kolloquium des Schwerpunktprogramms der Deutschen Forschungsgemeinschaft VIVA Grundlagen und Verfahren verlustarmer Informationsverarbeitung, D. Müller, C. Kretzschmar, and R. Siegmund, pp. 98-104, eds., 2002.
  • W. Geiselmann, R. Steinwandt, and Th. Beth
    "Attacking the Affine Parts of SFLASH"
    in Cryptography and Coding, 8th IMA International Conference Proceedings, B. Honary, ed., vol. 2260 of Lecture Notes in Computer Science, pp. 355-359, Springer, 2001.
    Also presented at the 2nd NESSIE workshop.
  • R. Steinwandt, W. Geiselmann, and Th. Beth
    "A Theoretical DPA-Based Cryptanalysis of the NESSIE Candidates FLASH and SFLASH"
    in Information Security, 4th International Conference, ISC 2001 Proceedings, G.I. Davida, Y. Frankel, eds., vol. 2200 of Lecture Notes in Computer Science, pp. 280-293, Springer, 2001.
    Also presented at the 2nd NESSIE workshop.
  • F. Bao, R. H. Deng, W. Geiselmann, C. Schnorr, R. Steinwandt, and H. Wu
    "Cryptanalysis of Two Sparse Polynomial Based Public Key Cryptosystems"
    in Public Key Cryptography, 4th International Workshop on Practice and Theory in Public Key Cryptosystems, PKC 2001 Proceedings, K. Kim, ed., vol. 1992 of Lecture Notes in Computer Science, pp. 153-164, Springer, 2001.
  • R. Steinwandt
    "Loopholes in Two Public Key Cryptosystems Using the Modular Group"
    in Public Key Cryptography, 4th International Workshop on Practice and Theory in Public Key Cryptosystems, PKC 2001 Proceedings, K. Kim, ed., vol. 1992 of Lecture Notes in Computer Science, pp. 180-189, Springer, 2001.
  • R. Steinwandt, M. Grassl, W. Geiselmann, and Th. Beth
    "Weaknesses in the SL₂(F₂n) Hashing Scheme"
    in Advances in Cryptology - CRYPTO 2000 Proceedings, M. Bellare, ed., vol. 1880 of Lecture Notes in Computer Science, Springer, pp. 287-299, 2000.
  • R. Steinwandt and J. Müller-Quade
    "On restricting ideals in finitely generated k-algebras"
    in Proceedings of the Seventh Rhine Workshop on Computer Algebra RWCA '00, Th. Mulders, ed., pp. 119-124, 2000.
  • R. Steinwandt
    "Decomposing Systems of Polynomial Equations"
    in Proceedings of the Second Workshop on Computer Algebra in Scientific Computing CASC '99, Munich, May 31-June 4, pp. 387-407, Springer, 1999.
  • J. Müller-Quade, R. Steinwandt, and Th. Beth
    "An application of Gröbner bases to the decomposition of rational mappings"
    in Gröbner Bases and Applications, Lecture Note Series, vol. 251, pp. 448-462, Cambridge University Press, 1998.
  
  

• Miscellaneous

  • W. Geiselmann, K. Matheis and R. Steinwandt
    "PET SNAKE: A Special Purpose Architecture to Implement an Algebraic Attack in Hardware"
    Cryptology ePrint Archive: Report 2009/222
  • M. I. González Vasco, F. Hess and R. Steinwandt
    "Combined (identity-based) public key schemes"
    Cryptology ePrint Archive: Report 2008/466, 2009.
  • J.-M. Bohli, M. I. González Vasco and R. Steinwandt
    "Password-Authenticated Constant-Round Group Key Establishment with a Common Reference String"
    Cryptology ePrint Archive: Report 2006/214, 2006.
  • J.-M. Bohli, M. I. González Vasco and R. Steinwandt
    "Burmester-Desmedt Tree-Based Key Tansport Revisited: Provable Security"
    Cryptology ePrint Archive: Report 2005/360, 2005.
  • M. Backes, M. Dürmuth, and R. Steinwandt
    "An algebra for composing enterprise privacy policies"
    Research Report 3485, IBM Research, 2004.
  • W. Geiselmann and R. Steinwandt
    "A short comment on the affine parts of SFLASH^v3"
    Cryptology ePrint Archive: Report 2003/220, 2003.
  • M. I. González Vasco, M. Rötteler, and R. Steinwandt
    " On Minimal Length Factorizations of Finite Groups"
    Technical Report CORR 2003-05, Department of Combinatorics and Optimization, University of Waterloo, 2003.
  • F. Bao, Th. Beth, R. H. Deng, W. Geiselmann, C. Schnorr, R. Steinwandt, and H. Wu
    "Cryptanalysis of SPIFI II and ENROOT II"
    Dagstuhl Seminar No. 00501, Security through Analysis and Verification, abstract in Seminar Report No. 294, p. 7, 2000.
  • R. Steinwandt
    "Zur algorithmischen Zerlegung polynomialer Gleichungssysteme"
    Dissertation, Universität Karlsruhe (TH), 2000.
  • R. Steinwandt
    "On the Algorithmic Decomposition of Systems of Polynomial Equations Using Intermediate Fields"
    in Proceedings of Treffen der Informatik-Graduiertenkollegs Aachen, Berlin, Darmstadt, Karlsruhe, Paderborn, Stuttgart, Dagstuhl, May 29-31, p. 33, 2000.
  • J. Müller-Quade and R. Steinwandt
    "A note on a composed product for k(X)^*"
    E.I.S.S. report 99-2, E.I.S.S., Universität Karlsruhe (TH), 1999.
  
  

• Invited Talks at Conferences, Workshops

  • "Violating Key Separation: On Using One Secret Key for Two Purposes"
    9th Central European Conference on Cryptography, Třebĺč, Jun 23, 2009.
  • "PET SNAKE: Implementing an Algebraic Attack in Hardware?"
    Workshop on Cryptographic Protocols and Public-Key Cryptography WPK 2009, Bertinoro, May 26, 2009.
  • "Speeding up algebraic attacks: Multiple Right Hand Sides in hardware?"
    Fields Cryptography Retrospective Meeting, May 11, 2009.
  • "On combining identity-based encryption and signature schemes"
    Geometric and Asymptotic Group Theorey with Applications, Hoboken, NJ, Mar 12, 2009.
  • "Group Theory in Authenticated Key Establishment: What Assumption(s) Do We Make?"
    MAA-AMS Joint Mathematics Meeting, AMS Special Session on Algebraic Cryptography and Generic Complexity, Washington, DC, Jan 7, 2009.
  • "On asymmetric encryption and digital signature with the same key"
    Second Workshop on Mathematical Cryptology WMC 2008, Santander, Oct 25, 2008.
  • Cryptography Tutorial
    Workshop Generic Case Complexity, American Institute of Mathematics, Palo Alto, CA, Aug 14, 2007.
  • "Group Key Establishment: Some Security Goals and Constructions"
    TATRACRYPT '07 (plenary talk), Smolenice, Jun 23, 2007.
  • "On Defining and Proving Security in Cryptographic Key Establishment"
    Special Session on Mathematical Aspects of Cryptography at AMS Sectional Meeting Spring 2007, Hoboken, NJ, Apr 15, 2007.
  • "Some Comments on Security Goals in the Presence of Malicious Insiders"
    Workshop on Cryptographic Protocols WCP 2007, Bertinoro, Mar 6, 2007.
  • "Another Attempt to Sieve With Small Chips - Part II: Norm Factorization"
    Workshop Special purpose hardware for cryptography: Attacks and Applications, IPAM, UCLA, Los Angeles, Dec 6, 2006.
  • "What To Expect From a Key Establishment Protocol?"
    Geometric and Asymptotic Group Theory with Applications, Barcelona, Sep 4, 2006.
  • "A Ciphertext-Only Attack on Polly Two"
    Workshop Algebraic Methods in Cryptography, Bochum, Nov 18, 2005.
  • "Dedicated Hardware to Solve Sparse Systems of Linear Equations: State of the Art & Application to Integer Factoring"
    9th Workshop on Elliptic Curve Cryptography, DTU, Copenhagen, Sep 20, 2005.
  • "Non-abelian groups in cryptography: constructions and attacks"
    Workshop on Mathematical Problems and Techniques in Cryptology, CRM, Barcelona, Jun 21, 2005.
  • "Algebraic Cryptosystems and Side Channel Attacks"
    special session "Algebraic Cryptography" at 2nd Joint Meeting of AMS, DMV, ÖMG, Mainz, Jun 18, 2005.
  • "Polynomial Systems of Equations as Building Block of Asymmetric Cryptographic Schemes"
    Gesellschaft für Angewandte Mathematik und Mechanik e.V.; 76th Annual Scientific Conference GAMM 2005, Luxembourg, Mar 31, 2005.
  • "A systolic design for supporting Wiedemann's algorithm"
    SHARCS - Special-purpose Hardware for Attacking Cryptographic Systems, Paris, Feb 25, 2005.
  • "Non-abelian groups in public key cryptography"
    CMS Winter 2004 Meeting (plenary talk), Montréal, Dec 13, 2004.
  • "A special purpose mesh architecture for sieving in the number field sieve"
    EIDMA-CWI Workshop on Factoring Large Numbers, Utrecht, Dec 12, 2003.
  • "On the security of some cryptosystems based on non-abelian groups"
    Third Pythagorean Conference, Faliraki, Rhodes, Jun 5, 2003.
  • "Neue Algorithmen zur Kryptoanalyse mit physikalischen Methoden"
    Ernst & Young-Konferenz "IT-Sicherheit in Gefahr?", München, Nov 26, 2002.
  • "Some remarks on side-channel attacks on algebraic cryptosystems"
    Workshop "Algebraic Methods in Cryptography", Ruhr-Universität Bochum, Nov 9, 2001.