List of Publications

Publications in cryptology:

• M.I. González and J.L. Villar. In search of mathematical primitives for deriving universal projective hash families. Applicable Algebra in Engineering, Communication and Computing 19(2) (2008) 161-173.
• M.I. González, R. Steinwandt and J.L. Villar. Towards Provable Security for Cryptographic Constructions Arising from Combinatorial Group Theory. Algebraic Methods in Cryptography. Contemporary Mathematics 418 (2006) 89-102.
• P. Paillier and J.L. Villar. Trading One-Wayness against Chosen-Ciphertext Security in Factoring-Based Encryption. Asiacrypt 2006, Lecture Notes in Computer Science 4284 (2006) 252-266. Shangai, China, December 2006. DOI: 10.1007/11935230_17
• A. Ruiz and J.L. Villar. Publicly Verifiable Secret Sharing from Paillier's Cryptosystem. Lecture Notes in Informatics P-74 (2005) 98-108.
• D. Galindo, S. Martín, P. Morillo and J.L. Villar. Fujisaki-Okamoto hybrid encryption revisited. International Journal of Information Security 4(4) (2005) 228-241. DOI: 10.1007/s10207-004-0042-z
• M.I. González-Vasco, C. Martínez, R. Steinwandt and J.L. Villar. A New Cramer-Shoup Like Methodology for Group Based Provably Secure Encryption Schemes. Theory of Cryptography Conference (TCC 2005), Lecture Notes in Computer Science 3378 (2005) 495-509. Cambridge MA, USA, February 2005. DOI: 10.1007/b106171
• D. Galindo, S. Martín, T. Takagi and J.L. Villar. A Provably Secure Elliptic Curve Scheme with Fast Encryption. Progress in Cryptology (INDOCRYPT '04), Lecture Notes in Computer Science 3348 (2004) 245-259. Chennai, India, December 2004. DOI: 10.1007/b104579
• J. Herranz and J.L. Villar. An unbalanced protocol for group key exchange. Trust and Privacy in Digital Business (TrustBus '04), Lecture Notes in Computer Science 3184 (2004) 172-180. Zaragoza, Spain, August 2004. DOI: 10.1007/b99832
• D. Galindo, S. Martín, P. Morillo and J.L. Villar. Easy Verifiable Primitives and Practical Public Key Cryptosystems. Information Security Conference (ISC '03), Lecture Notes in Computer Science 2851 (2003) 69-83. Bristol, United Kingdom, October 2003. DOI: 10.1007/10958513_6
• D. Galindo, S. Martín, P. Morillo and J.L. Villar. An IND-CPA cryptosystem from Demytko's primitive. Proc. of the IEEE Information Theory Workshop (ITW '03), 167-170. Paris, France, April 2003.
• D. Galindo, S. Martín, P. Morillo and J.L. Villar. An efficient semantically secure elliptic curve cryptosystem based on KMOV. Proc. of the International Workshop on Coding and Cryptography (WCC '03), 213-221. Versailles, France, March 2003.
• D. Galindo, S. Martín, P. Morillo and J.L. Villar. A Practical Public Key Cryptosystem from Paillier and Rabin Schemes. Public Key Cryptography (PKC '03), Lecture Notes in Computer Science 2567 (2002) 279-291. Miami, USA, January 2003.
• M. Valls and J.L. Villar. Distributed virtual safe-deposit box. IEICE Trans. Information and Systems E85-D 4 (2002) 786-788.
• S. Martín, P. Morillo and J.L. Villar. Computing the order of points on an elliptic curve modulo N is as difficult as factoring N. Applied Mathematics Letters 14 (2001) 341-346. DOI: 10.1016/S0893-9659(00)00159-2
• P. Morillo, C. Padró, G. Sáez and J.L. Villar. Weighted threshold secret sharing schemes. Information Processing Letters 70 (1999) 211-216. DOI: 10.1016/S0020-0190(99)00070-8
• C. Padró, G. Sáez and J.L. Villar. Detection of cheaters in vector space secret sharing schemes. Designs, Codes and Cryptography 16 (1999) 75-85. DOI: 10.1023/A:1008378426278
• A. Daniel, V. Torres and J.L. Villar. Parallelizing the RSA operator. Proc. of the 1st International Conference on the Theory and Applications of Cryptology (PRAGOCRYPT '96), 67-75. Praga, Czech Republic, September 1996.

Preprints

• D. Galindo, S. Martín, P. Morillo and J.L. Villar. Fujisaki-Okamoto IND-CCA hybrid encryption revisited. Cryptology ePrint Archive, Report 2003/107 [28 May 2003].
• D. Galindo, S. Martín, P. Morillo and J.L. Villar. A semantically secure elliptic curve RSA scheme with small expansion factor. Cryptology ePrint Archive, Report 2002/083 [27 Jun 2002].
• D. Galindo, S. Martín, P. Morillo and J.L. Villar. An efficient semantically secure elliptic curve cryptosystem based on KMOV. Cryptology ePrint Archive, Report 2002/037 [27 Nov 2002].

Publications in graph theory:

• J.L. Villar. The underlying graph of a line digraph. Discrete Applied Mathematics 37/38 (1992) 525-538. DOI: 10.1016/0166-218X(92)90156-5
• A.S. Lladó, J.L. Villar and M.A. Fiol. A new family of digraphs on alphabets. Proc. of the International Conference on Incidence Geometries and Combinatorial Structures (COMBINATORICS '88), 2 (1991) 181-193. Ravello, Italy, May 1988.
• J.L. Villar. Kautz s-ary closed sequences. Proc. of the International Conference on Incidence Geometries and Combinatorial Structures (COMBINATORICS '88), 2 (1991) 459-469. Ravello, Italy, May 1988.
• M.A. Fiol, A.S. Lladó and J.L. Villar. Digraphs on alphabets and the (d,N) digraph problem. Ars Combinatoria 25C (1988) 105-122.

Other publications:

• A. Albareda, R. Pérez, J.L. Villar, E. Minguella and J.A. Gorri. Intermodulation measurement of nonlinearities in piezoceramic resonators. Review of Scientific Instruments 68(8) (1997) 3143-3149. DOI: 10.1063/1.1148259
• R. Pérez, A. Albareda, E. Minguella and J.L. Villar. Electrical model for a nonlinear piezoelectric transducer. Proc. of the 10th IEEE Int. Symp. on Appl. of Ferroelectrics (ISAF '96), 2 (1996) 955-958. East Brunswick, USA, August 1996.
• R. Pérez, L. Benadero, A. Albareda, M. Tresánchez, J.A. Gorri and J.L. Villar. Low signal analysis of piezoelectric transformers. Ferroelectrics 134 (1992) 99-104.
• L. Benadero, J.L. Villar, J.A. Gorri, A. Albareda, E. Toribio and R. Pérez. Measuring magnetic dipole fields using Hall effect sensors. European Journal of Physics 12(3) (1991) 146-148.
• N. Ferrer Anglada, J. Fontcuberta, J.L. Villar and A. Albareda. Transport properties of YBa₂Cu_3-xFe_xO₇ superconducting oxides. Ferroelectrics 105 (1990) 69-74.