WMC 2008
Santander, SPAIN, October 23-25


Thursday 23 October
8:00 – 8:55Registration
9:00 – 9:50Michael E. PohstOn solving norm form equations in (global function) fields Chairman:
Igor Shparlinski
9:55 – 10:45 Simon R. Blackburn Cryptanalysing the critical group
Coffee Break
11:20 – 11:40Nicolas Courtois and Gregory BardRandom permutations statistics in cryptanalysis of periodic block ciphers Chairman:
Kenny Paterson
11:45 – 12:05Elena Dubrova How to increase the throughput of an NLFSR-based stream cipher
12:15 – 13:15Álvar IbeasPseudorandom sequences prediction and Cayley graphs description by means of integer latticesThesis Dissertation
15:30 – 16:20Kenny PatersonIdentity-based cryptography - with and without bilinear maps Chairman:
Rainer Steinwandt
16:25 – 17:15Jean-Charles FaugèreOn the complexity of the MinRank problem
Coffe Break
17:50 – 18:25Poster PresentationsAuthors have five minutes for each posterChairman:
David Sevilla
Friday 24 October
  9:00 – 9:50Igor Shparlinski Pairing friendly elliptic curves and finite fields Chairman:
Alexander May
9:55 – 10:45Arne WinterhofOn the k-error linear complexity of subsequences of Sidelnikov sequences
Coffee Break
11:20 – 12:10Joachim von zur Gathen Subset sum pseudorandom generators Chairman:
Jean-Charles Faugère
12:15 – 12:35Massimo Caboara, Fabrizio Caruso, and Carlo TraversoBlock lattice polly cracker, theory and practice
12:40 – 13:00Vasyl UstimenkoOn the hidden discrete logarithm for some polynomial stream ciphers
15:30 – 16:20Alexander MaySolving RSA problems with lattice reduction Chairman:
Simon Blackburn
16:25 – 16:45Simon Fischer, Willi Meier, and Dirk StegemannSome remarks on FCSRs and implications for FCSR-based stream ciphers
Coffee Break
17:10 – 18:00Carles PadróAlgebraic manipulation detection codes Chairman:
Vladimir Shpilrain
18:05 – 18:25Jean-Charles Faugère and Ludovic PerretHigh order derivatives and decomposition of multivariate polynomials
20:45Social Dinner: Bodega del Riojano
Saturday 25 October
  9:30 – 10:20Rainer SteinwandtOn asymmetric encryption and digital signature with the same key Chairman:
Arne Winterhof
10:25 – 11:15Joan-Josep Climent On the characterization and construction of bent functions of n+1 variables from Boolean functions of n variables
Coffee Break
11:50 – 12:40Oriol SerraCycle codes of graphs and MDS array codes Chairman:
Joachim von zur Gathen
12:45 – 13:05Mario Lamberger, Tomislav Nad, and Vincent Rijmen Numerical solvers in cryptanalysis
13:10 – 13:30Andrei PrasolovPolynomial mappings and crypto-protocols
16:00 – 16:50Tony ShaskaAutomorphism groups of superelliptic curves Chairman:
Michael Pohst
16:55 – 17:45Vladimir ShpilrainAuthentication schemes

The posters will be displayed in the area of coffee breaks throughout the workshop.

Contributed posters

David Arroyo, Rhouma Rhouma, Gonzalo Álvarez, Verónica Fernández, and Safya BelghithOn the skew tent map as base of a new image chaos-based encryption scheme
Massimo Caboara, Fabrizio Caruso, and Carlo TraversoHeterogeneous lattice metrics and the NTWO cryptosystem
Jaime Gutiérrez and Álvar IbeasRecovering a sum of two squares decomposition
Roman Popovych A note on Agrawal Conjecture
Marina PudovkinaSome generalized Feistel ciphers and wreath products of symmetric groups
Marina PudovkinaSymmetry groups of some classes of cryptographic boolean functions
Nurdan Saran and Ali DoğanaksoyChoosing parameters for time-memory trade offs via new parameters