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Willi Geiselmann

dblp:21/4037 · DBLP profile ↗
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19ranked-venue papers
14as first author
0since 2021 · last 2010
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Security and privacy · 12 · 9 first-authorTheory of computation · 4 · 2 first-authorSystems, architecture and hardware · 2 · 2 first-authorDatabases, data management, data science and information retrieval · 1 · 1 first-authorApplied, interdisciplinary, general and emerging computing · 1 · 1 first-author

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Network and information security
6 papers
Cryptographic primitives and cryptanalysis · 100%
Computer architecture, parallel and distributed computing, and storage systems
4 papers
Integrated circuit design · 54% High-performance computing · 46%
Theoretical computer science
2 papers
Coding theory · 100%

Topics — the 16 heaviest of 17, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Cryptographic primitives and cryptanalysis
integer factorization
0.232007
Non-wafer-Scale Sieving Hardware for the NFS: Another Attempt to Cope with 1024-Bit · EUROCRYPT 2007
Scalable Hardware for Sparse Systems of Linear Equations, with Applications to Integer Factorization · CHES 2005
Hardware to Solve Sparse Systems of Linear Equations over GF(2) · CHES 2003
High-performance computing
sparse linear solver
0.122005
Scalable Hardware for Sparse Systems of Linear Equations, with Applications to Integer Factorization · CHES 2005
Hardware to Solve Sparse Systems of Linear Equations over GF(2) · CHES 2003
Integrated circuit design › digital circuit design
arithmetic circuit design
0.122003
A Redundant Representation of GF(q^n) for Designing Arithmetic Circuits · IEEE Trans. Computers 2003
On "A New Representation of Elements of Finite Fields GF (2m) Yielding Small Complexity Arithmetic Circuits" · IEEE Trans. Computers 2002
Coding theory › finite fields
finite field arithmetic
0.122003
A Redundant Representation of GF(q^n) for Designing Arithmetic Circuits · IEEE Trans. Computers 2003
On "A New Representation of Elements of Finite Fields GF (2m) Yielding Small Complexity Arithmetic Circuits" · IEEE Trans. Computers 2002
Cryptographic primitives and cryptanalysis › integer factorization
number field sieve
0.112007
Non-wafer-Scale Sieving Hardware for the NFS: Another Attempt to Cope with 1024-Bit · EUROCRYPT 2007
Coding theory › finite fields › finite field arithmetic
redundant representation
0.012003
A Redundant Representation of GF(q^n) for Designing Arithmetic Circuits · IEEE Trans. Computers 2003
Cryptographic primitives and cryptanalysis › provable security › security notions
chosen ciphertext attack
0.012002
Cryptanalysis of Polly Cracker · IEEE Trans. Inf. Theory 2002
Cryptographic primitives and cryptanalysis › public-key cryptography
public-key cryptanalysis
0.012002
Cryptanalysis of Polly Cracker · IEEE Trans. Inf. Theory 2002
Cryptographic primitives and cryptanalysis
public-key cryptography
0.012002
Cryptanalysis of Polly Cracker · IEEE Trans. Inf. Theory 2002
Integrated circuit design › finite field arithmetic
finite field arithmetic circuit
0.012002
On "A New Representation of Elements of Finite Fields GF (2m) Yielding Small Complexity Arithmetic Circuits" · IEEE Trans. Computers 2002
Cryptographic primitives and cryptanalysis
hash function cryptanalysis
0.012000
Weaknesses in the SL2(IFs2) Hashing Scheme · CRYPTO 2000
Cryptographic primitives and cryptanalysis › hash functions
SL2 hashing
0.012000
Weaknesses in the SL2(IFs2) Hashing Scheme · CRYPTO 2000
Cryptographic primitives and cryptanalysis › stream cipher
clock-controlled shift registers
0.011996
Correlation Attacks on Cascades of Clock Controlled Shift Registers · ASIACRYPT 1996
Cryptographic primitives and cryptanalysis › stream cipher cryptanalysis
correlation attack
0.011996
Correlation Attacks on Cascades of Clock Controlled Shift Registers · ASIACRYPT 1996
Cryptographic primitives and cryptanalysis
stream cipher
0.011996
Correlation Attacks on Cascades of Clock Controlled Shift Registers · ASIACRYPT 1996
Cryptographic primitives and cryptanalysis
algebraic cryptanalysis
0.012000
Weaknesses in the SL2(IFs2) Hashing Scheme · CRYPTO 2000

Methods — techniques the papers use, named apart from their topics

sparse linear algebra · 0.2residue class algebra · 0.1algebraic characterization · 0.1chosen-ciphertext attack · 0.0algebraic attack · 0.0correlation attack · 0.0
YearPublicationVenuePosition
2010 Key Exchange and Encryption Schemes Based on Non-commutative Skew Polynomials
Delphine Boucher, Philippe Gaborit, Willi Geiselmann, Olivier Ruatta, Felix Ulmer
PQCrypto3
2007 Non-wafer-Scale Sieving Hardware for the NFS: Another Attempt to Cope with 1024-Bit
Willi Geiselmann, Rainer Steinwandt
EUROCRYPT1
2005 Scalable Hardware for Sparse Systems of Linear Equations, with Applications to Integer Factorization
Willi Geiselmann, Adi Shamir, Rainer Steinwandt, Eran Tromer
CHES1
2004 Yet Another Sieving Device
Willi Geiselmann, Rainer Steinwandt
CT-RSA1
2004 Attacks on a secure group communication scheme with hierarchical access control
abstract
This paper describes the attacks on a secure group communication with hierarchical access control, which arises in the communication group involving users with different privilege levels. The basic idea is to enable each subgroup to read the messages of those subgroups that are located at a lower level in the hierarchy. For such a setting, the Chinese remainder theorem based hierarchical access control scheme CRTHACS is proposed, which also aims at hiding the underlying hierarchy. Here we describe practical attacks, which allow for revealing at least parts of the hierarchy.
Willi Geiselmann, Rainer Steinwandt
ISIT1
2004 Power attacks on a side-channel resistant elliptic curve implementation
Willi Geiselmann, Rainer Steinwandt
Inf. Process. Lett.1
2003 Hardware to Solve Sparse Systems of Linear Equations over GF(2)
Willi Geiselmann, Rainer Steinwandt
CHES1
2003 A Redundant Representation of GF(q^n) for Designing Arithmetic Circuits
abstract
Generalizing a construction of Silverman (1999), we describe a redundant representation of finite fields GF(qn), where computations in GF(qn) are realized through computations in a suitable residue class algebra. Our focus is on fields of characteristic ≠ 2 and we show that the representation discussed here can, in particular, be used for designing a highly regular multiplication circuit for GF qn).
Willi Geiselmann, Rainer Steinwandt
IEEE Trans. Computers1
2002 On "A New Representation of Elements of Finite Fields GF (2m) Yielding Small Complexity Arithmetic Circuits"
abstract
For original article see G. Drolet, ibid., vol. 47, no. 9, p. 938-946, (Sept 1998). We characterize the smallest n with GF(2)[X]/(X/sup n/ + 1) containing an isomorphic copy of GF(2/sup m/). This characterization shows that the representation of finite fields described in a previous issue of the IEEE Transactions on Computers is not "optimal" as claimed. The representation considered there can often be improved significantly.
Willi Geiselmann, Jörn Müller-Quade, Rainer Steinwandt
IEEE Trans. Computers1
2002 Cryptanalysis of Polly Cracker
abstract
An attack on the public key cryptosystem Polly Cracker is described, that reveals the complete secret key /spl sigma/ /spl isin/ F/sub q//sup n/ by means of n (nonadaptively) chosen "fake" ciphertexts.
Rainer Steinwandt, Willi Geiselmann
IEEE Trans. Inf. Theory2
2001 Attacking the Affine Parts of SFLASH
Willi Geiselmann, Rainer Steinwandt, Thomas Beth
IMACC1
2001 A Theoretical DPA-Based Cryptanalysis of the NESSIE Candidates FLASH and SFLASH
Rainer Steinwandt, Willi Geiselmann, Thomas Beth
ISC2
2000 Weaknesses in the SL2(IFs2) Hashing Scheme
Rainer Steinwandt, Markus Grassl, Willi Geiselmann, Thomas Beth
CRYPTO3
1997 Constructing a Third-Order Linear Differential Equation
Willi Geiselmann, Felix Ulmer
Theor. Comput. Sci.1
1996 Correlation Attacks on Cascades of Clock Controlled Shift Registers
Willi Geiselmann, Dieter Gollmann
ASIACRYPT1
1996 A Note on the Hash Function of Tillich and Zémor
Willi Geiselmann
FSE1
1995 A Note on the Hash Function of Tillich and Zémor
Willi Geiselmann
IMACC1
1993 Self-Dual Bases in Fqn
Willi Geiselmann, Dieter Gollmann
Des. Codes Cryptogr.1
1991 Finding (good) Normal Bases in Finite Fields
abstract
An algorithm to generate low complexity normal bases in finite fields is presented.This algorithm generalizes the method of Ash et al. to fields of arbitrary characteristic.It can be applied to most finite fields and produces (under certain conditions) the multiplication matrix for the normal basis multiplication of GF'(qn) : GI'(q) in 0(n2 log2 n log q) bit-operations.
Thomas Beth, Willi Geiselmann
ISSAC2