Sunday, 21 June, 2009
18:00-20:00 Registration and Reception

Monday, 22 June, 2009
8:00-9:00 Registration
Official Opening Ceremony
Under the Patronage of the Ministry of Communication Technologies
9:00-9:30 Opening AfricaCrypt2009 Conference Works by Mrs Lamia Chafai Sghaier, Secretary of State in charge of Information Technologies, Internet and Open Source Software

Asymmetric Encryption and Anonymity
9:30-10:00 Certified Encryption Revisited
Pooya Farshim and Bogdan Warinschi
10:00-10:30 Threshold Attribute-Based Signatures and Their Application to Anonymous Credential Systems
Siamak F. Shahandashti and Reihaneh Safavi-Naini
10:30-11:00 Anonymity from Public Key Encryption to Undeniable Signatures
Laila El Aimani

11:00-11:30 Coffee break

Invited Talk
11:30-12:30 Unifying Zero-knowledge Proofs of Knowledg
Ueli Maurer

12:30-14:00 Lunch

Digital Signatures
14:00-14:30 New RSA-Based (Selectively) Convertible Undeniable Signature Schemes
Le Trieu Phong, Kaoru Kurosawa and Wakaha Ogata
14:30-15:00 A Schnorr-like Lightweight Identity-Based Signature Scheme
David Galindo and Flavio D. Garcia
15:00-15:30 On the Theoretical Gap between Group Signatures with and without Unlinkability
Go Ohtake, Arisa Fujii, Goichiro Hanaoka and Kazuto Ogawa
15:30-16:00 Practical Threshold Signatures with Linear Secret Sharing Schemes
Ilker Nadi Bozkurt, Kamer Kaya and Ali Aydin Selçuk

16:00-16:30 Coffee break

Block Ciphers
16:30-17:00 Generic Attacks on Feistel Networks with Internal Permutations
Joana Treger and Jacques Patarin
17:00-17:30 Distinguishers for Ciphers and Known Key Attack against Rijndael with Large Blocks
Marine Minier, Raphael C.-W. Phan and Benjamin Pousse

Tuesday, 23 June, 2009
Hash Functions
9:00-9:30 Second Preimage Attack on 5-Pass HAVAL and Partial Key-Recovery Attacks on HMAC/NMAC-5-Pass HAVAL
Gaoli Wang and Shaohui Wang
9:30-10:00 Cryptanalysis of Vortex
Jean-Philippe Aumasson, Orr Dunkelman, Florian Mendel, Christian Rechberger and Søren S. Thomsen
10:00-10:30 Two Passes of Tiger Are Not One-Way
Florian Mendel

10:30-11:00 Coffee break

Invited Talk
11:00-12:00 Efficient Secure Multi-party Computation
Nigel Smart

12:00-13:30 Lunch

14:00-15:30 Rump Session (Submission)
Cache-Timing Template Attacks
Billy Bob Brumley and Risto M. Hakala

15:45-19:30 Excursion to Carthage Monuments and Sidi BouSaid Medina

Wednesday, 24 June, 2009
Cryptographic Protocols
9:00-9:30 Co-Sound Zero-Knowledge with Public Keys
Carmine Ventre and Ivan Visconti
9:30-10:00 Another Look at Extended Private Information Retrieval Protocols
Julien Bringer and Hervé Chabanne
10:00-10:30 Constructing Universally Composable Oblivious Transfers from Double Trapdoor Encryptions
Huafei Zhu and Feng Bao

10:30-11:00 Coffee break

Invited Talk
11:00-12:00 Blockwise-Adaptive Modes of Operation: A Tutorial
Antoine Joux

12:00-14:00 Lunch

Implementations I
14:00-14:30 Exponent Recoding and Regular Exponentiation Algorithms
Marc Joye and Michael Tunstall
14:30-15:00 Efficient Acceleration of Asymmetric Cryptography on Graphics Hardware
Owen Harrison and John Waldron
15:00-15:30 Fast Elliptic-Curve Cryptography on the Cell Broadband Engine
Neil Costigan and Peter Schwabe

15:30-16:00 Coffee break

Asymmetric Encryption
16:00-16:30 Reducing Key Length of the McEliece Cryptosystem
Thierry P. Berger, Pierre-Louis Cayrel, Philippe Gaborit and Ayoub Otmani
16:30-17:00 Cryptanalysis of RSA Using the Ratio of the Primes
Abderrahmane Nitaj

20:00-23:00 Conference Banquet

Thursday, 25 June, 2009
Implementations II
9:00-9:30 On Modular Decomposition of Integers
Billy Bob Brumley and Kaisa Nyberg
9:30-10:00 Breaking KeeLoq in a Flash - On Extracting Keys at Lightning Speed
Markus Kasper, Timo Kasper, Amir Moradi and Christof Paar
10:00-10:30 An Improved Fault Based Attack of the Advanced Encryption Standard
Debdeep Mukhopadhyay

10:30-11:00 Coffee break

Key Agreement Protocols
11:00-11:30 Security Analysis of Standard Authentication and Key Agreement Protocols Utilizing Timestamps
Manuel Barbosa and Pooya Farshim
11:30-12:00 Password-Authenticated Group Key Agreement with Adaptive Security and Contributiveness
Michel Abdalla, Dario Catalano, Céline Chevalier and David Pointcheval

12:00-13:30 Lunch

15:00-19:00 Excursion to Tunis Medina and National Bardo Museum

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NB: Last minute changes could be introduced in the conference program. Please, check the information on this page before and during the conference.