INRIA-Rocquencourt
Domaine de Voluceau, B.P. 105
78153 Le Chesnay Cedex - France
Phone. +33 1 39 63 50 75 - Fax. +33 1 39 63 50 51

.: Professional activities :.

• I am currently at the Project-Team SECRET (INRIA-Rocquencourt)
• Maître de conférences at Ensicaen and member of GREYC
• Webpage of the weekly Crypto seminar
• Involved in the following past ANR (Agence Nationale de la Recherche) Projects:
• XCODES (2006 - 2009)
• SMCP - Secure Mobile Content Portability (2007-2008)
• Medi@sur (2007-2008)
• Postdoc's and Phd student:
• Phd - L. Dallot (2006-2010)
• Postdoc - L. Boubchir (2007-2008), S. Le Gloannec (2007-2008)
• Program Committee: SCC 2010

.: Publication :.

• Paper Journal
1. A. Otmani, J.P. Tillich and L. Dallot, Cryptanalysis of Two McEliece Cryptosystems Based on Quasi-Cyclic Codes, Special issues in Symbolic Computation and Cryptography, Mathematics in Computer Science, vol. 3, n°2, January 2010, pp. 129-140. [DOI] [pdf]
2. J.C. Carlach and A. Otmani, A Systematic Construction of Self-Dual Codes, IEEE Transactions on Information Theory, vol. 49, n°11, pp. 3005- 3009, November 2003.
3. P. Gaborit and A. Otmani, Experimental Construction of Self-Dual codes, Finite Fields and Their Applications 9 (2003), n°3, pp. 372-394.
4. A. Otmani, Caractérisation des codes auto-duaux binaires de type II à partir du code de Hamming étendu [8,4,4], Comptes Rendus à l'Académie des Sciences, June 2003, vol. 336, no. 12, pp. 971-974(4).


• Paper Conference
1. J.C. Faugère, A. Otmani, L. Perret, J.P. Tillich, Algebraic Cryptanalysis of McEliece Variants with Compact Keys, Proceedings of the 29th International Conference on Cryptology - EUROCRYPT 2010, Nice, France, May 30-June 03 2010. [pdf]
2. T. Berger, P.L. Cayrel, P. Gaborit, A. Otmani, Reducing Key Length of the McEliece Cryptosystem, Proceedings of Second International Conference on Cryptology - AFRICACRYPT 2009, Gammarth, Tunisia, June 21-25 2009, pp. 77-97. [pdf]
3. L. Boubchir, A. Otmani and N. Zerida, The 2nd BOWS Contest: Wavelet-Based Bayesian Denoising Attack on Image Watermarking, International Conference on Intelligent Information Hiding and Multimedia Signal (IIHMSP '08), Harbin, China, August 15-17 2008, pp. 473-476.
4. A. Otmani, J.P. Tillich and I. Andriyanova, On the Minimum Distance of Generalized LDPC Codes, Proceedings of the 2007 IEEE International Symposium on Information Theory (ISIT 07), Nice, France, June 2007, pp. 751-755.
5. P. Gaborit and A. Otmani, Experimental Construction of Self-Dual Codes, Proceedings of the 2002 IEEE International Symposium on Information Theory (ISIT 2002), Lausanne, Switzerland, July 2002, p.459.
6. E. Cadic, J.C. Carlach, G. Olocco, A. Otmani and J.P. Tillich, Low Complexity Tail-Biting Trellises of Self-Dual Codes of Length 24, 32 and 40 over GF(4) and Z₄ of Large Minimum Distance, Proc. 14th Int. Symp. Applied Algebra, Algebraic Algorithms and Error-Correcting Codes (AAECC 14), S. Boztas and I. Shparlinski (Eds.), Springer Verlag, November 2001, Melbourne, Australia, pp.57-66.
7. J.C. Carlach, A. Otmani and C. Vervoux, A New Scheme for Building Good Self-Dual Block Codes, Proceedings of the 2000 IEEE International Symposium on Information Theory (ISIT 2000), Sorrento, Italia, 25-30 June 2000, p.476.


• Paper Workshop
1. J.C. Faugère, A. Otmani, L. Perret, J.P. Tillich, Algebraic Cryptanalysis of McEliece Variants with Compact Keys - Towards a Complexity Analysis, Proceedings of Second International Conference on Symbolic Computation and Cryptography (SCC 2010), C. Cid and J.C. Faugère (Eds.), Royal Holloway, University of London, Egham, UK, June 22-25, 2010, pp. 45-55. [pdf]
2. A. Otmani, J.P. Tillich and L. Dallot, Cryptanalysis of a McEliece Cryptosystem Based on Quasi-Cyclic LDPC Codes, Proceedings of First International Conference on Symbolic Computation and Cryptography (SCC 2008), Beijing, China, April 28-30 2008, pp. 69-81.
3. P.L. Cayrel, A. Otmani and D. Vergnaud, On Kabatianskii-Krouk-Smeets Signatures, International Workshop on the Arithmetic of Finite Fields (WAIFI 2007), C. Carlet & B. Sunar, eds., Springer, Lect. Notes Comput. Sci. vol. 4547, Madrid, Spain, 21-22 June 2007, pp. 237-251.
4. G. Olocco and A. Otmani, Low Complexity Tail-Biting trellises for Some Extremal Self-Dual Dual Codes, Proc. 8th International Workshop on Algebraic and Combinatorial Coding Theory (ACCT 8), St-Petersburg, Russia, September 2002, p.214.
5. P. Gaborit and A. Otmani, Experimental Constructions of Codes over Rings and Construction of an Optimal Unimodular Lattice in Dimension 43, Proc. 8th International Workshop on Algebraic and Combinatorial Coding Theory (ACCT 8), St-Petersburg, Russia, September 2002, p.128.
6. A. Otmani, A New Construction of Self-Dual Codes, Proc. 7th International Workshop on Algebraic and Combinatorial Coding Theory (ACCT 7), Bansko, Bulgaria, 18-24 June 2000, pp.255-260.