Mathematics of Discrete Logarithms Workshop October 8-9, 2003 Wednesday, October 8 10:00 arival and coffee 10:15-11:15 Roberto Avanzi: The cryptographic marriage of Frobenius and point halving 11:45-12:45 Roger Oyono: Arithmetic in Jacobians of Picard Curves 14:30-15:30 Christophe Ritzenthaler: AGM method for non hyperelliptic genus 3 curves 16:00-17:00 Enric Nart: Jacobians in isogeny classes of simple abelian surfaces over finite fields Thursday, October 9 9:00 coffee 9:15 -10:15 Nicolas Thériault: Index calculus attack for hyperelliptic curves of small genus 10:45-11:45 Tanja Lange: Cryptographic applications of trace zero varieties 13:15-14:15 Jasper Scholten: Cover attacks on discrete logarithm problems in trace zero varieties 14:30-15:30 Claus Diem: Extended Linearization and discrete logarithm problems