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Research

Research interests | International journals and conferences | Spanish conferences | Top

Research interests

  • Secret sharing schemes
  • Distributed cryptography
  • Digital signatures with collectives of signers
  • Key distribution
  • Algorithmical Number Theory

Research interests | International journals and conferences | Spanish conferences | Top

International journals and conferences

1995

  • G. Sáez, C. Padró, J.L. Villar and P. Morillo: Weighted threshold secret sharing schemes. 15th British Combinatorial Conference. Stirling, UK. 1995.

1996

  • C. Padró, G. Sáez and J.L. Villar: Bounds on the information rate of weighted threshold schemes. Mediterranean Workshop on Coding and Information Integrity. Palma de Mallorca, Spain. 1996.
  • C. Padró, G. Sáez and J.L. Villar: Detection of cheaters in vector space secret sharing schemes. 1st International Conference on the Theory and Applications of Cryptology, PRAGOCRYPT'9, ISBN 80-01-01502-5. Praga, Czech Republic. 1996.

1998

  • C. Padró and G. Sáez: Secret sharing schemes with bipartite access structure. Advances in Cryptology-EUROCRYPT'98. Lecture Notes in Computer Science (Springer-Verlag), vol. 1403, (500-511). Helsinki (Finland). 1998.
  • C. Padró and G. Sáez: Lower Bounds on the Information Rate of Secret Sharing Schemes with Homogeneous Access Structure. MFCS'98 Workshop on Communication. Brno, Czech Republic. 1998.

1999

  • C. Padró and G. Sáez: Bounds on the information rate of secret sharing schemes with rank 3 homogeneous access structure. 5th International Symposium on Communications Theory and Applications. Published by IEE. Ambleside, UK. 1999.
  • S. Cabello, C. Padró and G. Sáez: Secret Sharing Schemes with Detection of Cheaters for a General Access Structure. 12th International Symposium on Fundamentals of Computation Theory, FCT'99. Lecture Notes in Computer Science, núm. 1684, pp. 185-194. ISBN 3-540-66412-2. ISSN 0302-9743. Iasi, Romania. 1999.
  • C. Padró, G. Sáez and J.L. Villar: Detection of cheaters in vector space secret sharing schemes. Designs, Codes and Cryptography vol. 16, (75-85), 1999.
  • P. Morillo, C. Padró, G. Sáez and J.L. Villar: Weighted threshold secret sharing schemes. Information Processing Letters, vol.70, (211-216), 1999.
  • S. Cabello, C. Padró and G. Sáez: Secret Sharing Schemes with Detection of Cheaters for a General Access Structure. Lecture Notes in Computer Science, vol. 1684, (185-194), 1999.

2000

  • G. Sáez: General key predistribution scheme. Poster núm. 578. Third European Congress of Mathematics 2000 (3ecm). Poster in CD proceedings published by Carles Casacuberta, Josep M. Font, Santiago Zarzuela. Barcelona, Spain. 2000.
  • C. Padró and G. Sáez: A basic tool in key management secret sharing schemes. 4th World Multiconference on Systemics, Cybernetics and Informatics (SCI2000). IEEE Computer Society ISBN 980-07-6695-2. Orlando, USA. 2000.
  • C. Padró and G. Sáez: Secret sharing schemes with bipartite access structure. IEEE Transactions on Information Theory, vol. 46, (2596-2604), 2000.

2001

  • G. Sáez: Generation of Key Predistribution Scheme using Secret Sharing Schemes. International Workshop on Coding and Cryptography, WCC'2001. ISBN 2-7261-1179-3. Paris, France. 2001.
  • I. Jiménez and G. Sáez: Approximate power roots in Z_m. Information Security Conference, ISC'01. Lecture Notes in Computer Science, vol. 2200 pp. 310-323, ISBN 3-540-42662-0. ISSN 0302-9743. Málaga, Spain. 2001.

2002

  • S. Cabello, C. Padró and G. Sáez: Secret Sharing Schemes with Detection of Cheaters for a General Access Structure. Designs, Codes and Cryptography, vol. 25, (175-188), 2002.
  • C. Padró and G. Sáez: On taking cube roots in Z_m. Applied Mathematics Letters, vol. 15 (703-708), 2002.
  • C. Padró and G. Sáez: Lower Bounds on the Information Rate of Secret Sharing Schemes with Homogeneous Access Structure. Information Processing Letters, vol 83 (345-351), 2002.
  • V. Daza, J. Herranz, C. Padró and G. Sáez: A Distributed and Computationally Secure Key Distribution Scheme. Information Security Conference, ISC'02. Lecture Notes in Computer Science, vol. 2433 pp. 342-356. ISBN 3-540-44270-7. ISSN 0302-9743. Sao Paulo, Brasil.

2003

  • V. Daza, J. Herranz and G. Sáez: Some Protocols Useful on the Internet from Threshold Signature Schemes. Trust and Privacy in Digital Business, TrustBus'03(DEXA'2003). pp. 359-363, edited by IEEE ComputerSociety, ISBN 0-7695-1993-8. ISSN 1529-4188. Praga, Czech Republic. 2003.
  • G. Sáez: Generation of Key Predistribution Scheme using Secret Sharing Schemes. Discrete Applied Mathematics, vol. 128 (239-249), 2003.
  • J. Herranz and G. Sáez: Verifiable Secret Sharing for General Access Structures, with Application to Fully Distributed Proxy Signatures. Financial Cryptography, FC'2003. Lecture Notes in Computer Science ,vol. 2742, pp. 286-302. ISBN 3-540-40663-8. ISSN 0302-9743. Gosier, Guadeloupe Island, FWI, France. 2003.
  • V. Daza, J. Herranz and G. Sáez: Constructing General Dynamic Group Key Distribution Schemes with Decentralized User Join. 8th Australasian Conference on Information Security and Privacy, ACISP '0. Lecture Notes in Computer Science (Springer-Verlag) vol. 2727 (464-475). Wollongong, Australia. 2003.
  • J. Herranz, C. Padró and G. Sáez: Distributed RSA Signature Scheme for General Access Structures. Information Security Conference, ISC'03. Lecture Notes in Computer Science, vol. 2851, pp. 122-136.ISBN 3-540-20176-9. ISSN 0302-9743. Bristol, UK. 2003.
  • J. Herranz and G. Sáez: Forking Lemmas for Ring Signature Schemes. Fourth International Conference on Cryptology in India, Indocrypt'2003. Lecture Notes in Computer Science, vol. 2904, pp. 266-279. ISBN 3-540-20609-4. ISSN 0302-9743. New Delhi, India. 2003.

2004

  • C. Padró and G. Sáez: Corrections to ‘Secret sharing schemes with bipartite access structure’. IEEE Transactions on Information Theory, vol.50 (1373-1373), 2004.
  • V. Daza, J. Herranz and G. Sáez: Protocols useful on the Internet from distributed signature schemes. Springer-Verlag. ISSN: 1615-5262(paper edition) and 1615-5270. International Journal of Information Security, IJIS, vol. 3 (61-69), 2004.
  • G. Di Crescenzo, J. Herranz and G. Sáez: Enhancing server integrity in private proxy auctions. Trust and Privacy in Digital Business, TrustBus'04 (DEXA'2004). Lecture Notes in Computer Science, vol. 3184, pp. 80-89. ISBN 3-540-22919-1. ISSN 0302-9743. Zaragoza, Spain. 2004.
  • J. Herranz and G. Sáez: New identity-based ring signature Schemes. Sixth International Conference on Information and Communications Security, ICICS'04. Lecture Notes in Computer Science, vol. 3269, pp. 27-39. ISBN 3-540-23563-9. ISSN 0302-9743. Málaga, Spain. 2004.
  • J. Herranz and G. Sáez: Revisiting fully distributed proxy signature schemes. 5th International Conference on Cryptology in India, INDOCRYPT'04. Lecture Notes in Computer Science, vol. 3348, pp. 356-370. ISBN 3-540-24130-2. ISSN 0302-9743. Chennai (Madras), India. 2004.

2005

  • J. Herranz and G. Sáez: Ring signatures for ad-hoc general access structures. 1st. European Workshop on Security in Ad-Hoc and Sensor Networks, ESAS'04. Lecture Notes in Computer Science, vol. 3313, pp. 54-65. ISBN 3-540-24396-8. ISSN 0302-9743. Heidelberg, Germany. 2005.
  • G. Sáez: Self-Healing Key Distribution Schemes with Sponsorization. 9th. IFIP TC-6 TC-11 International Conference on Communications and Multimedia Security (CMS’2005). Lecture Notes in Computer Science, vol. 3677, pp. 22-31. ISBN 3-540-28791-4. ISSN 0302-9743. Salzburg, Austria. 2005.
  • G. Sáez: On Threshold Self-Healing Key Distribution Schemes. 10th IMA International Conference on Cryptography and Coding. Lecture Notes in Computer Science, vol. 3796, pp. 340-354. ISBN 3-540-30276-X. ISSN 0302-9743. Cirencester, UK. 2005.

2006

  • J. Herranz and G. Sáez: Distributed ring signatures from general dual access structures. Designs, Codes and Cryptography vol. 40, (2006) 103-120.
  • J. Herranz and G. Sáez: New results on multipartite access structures. IEE Proceedings on Information Security 153 (2006) 153-162.

Research interests | International journals and conferences | Spanish conferences | Top

Spanish conferences

1995

  • P. Morillo, C. Padró, G. Sáez and J.L. Villar: Esquemas de umbral con pesos para compartir secretos. X Simposium Nacional de la Unión Científica Internacional de Radio. Proceedings pp. 1143-1145.ISBN 84-7762-491-7. Valladolid, Spain. 1995.

1996

  • C. Padró, G. Sáez and J.L. Villar: Detección de tramposos en esquemas para compartir secretos de tipo vectorial. IV Reunión Española sobre Criptología. Proceddings edited by J. Tena and M.F. Blanco, pp. 59-65.ISBN 84-7762-645-6. Valladolid, Spain. 1996.

1998

  • C. Padró and G. Sáez: Problemas relacionados con la tasa de información de los esquemas para compartir secretos. I Jornades de Matemática Discreta y Algorísmica. Proceedings pp. 78-80. Barcelona, Spain. 1998.
  • C. Padró, G. Sáez and J.L. Villar: Esquemas para compartir secretos con detección de tramposos para una estructura general. V Reunión Española de Criptología y Seguridad de la Información. Proceedings pp. 289-295. ISBN 84-8497-820-6. Málaga, Spain. 1998.
  • C. Padró, G. Sáez and A. Zamora: Generación de sucesiones pseudo-aleatorias mediante la función cúbica en el conjunto de los enteros módulo n. V Reunión Española de Criptología y Seguridad de la Información. Proceedings pp. 373-379.ISBN 84-8497-820-6. Málaga, Spain. 1998.

2000

  • C. Padró and G. Sáez: Tasa de información de los esquemas para compartir secretos con estructura homogénea de rango 3. VI Reunión Española de Criptología y Seguridad de la Información. ISBN 84-7897-431-8. Tenerife, Spain. 2000.
  • P. Morillo and G. Sáez: Líneas de trabajo en el Grupo de Matemática Aplicada a la Criptografía de la UPC. II Jornades de Matemática Discreta y Algorísmica. pp. 85-88. Palma de Mallorca, Spain. 2000.

2002

  • Javier Herranz, Carles Padró, Germán Sáez and Marta Serra: Esquemas distribuidos de firma digital para estructuras de acceso generales. VII Reunión Española de Criptología y Seguridad de la Información. ISBN 84-699-8931-6. Oviedo, Spain. 2002.

2004

  • J. Herranz and G. Sáez: Distributed key generation for ID-based schemes. VIII Reunión Española de Criptología y Seguridad de la Información. Proceedings pp. 215-223. ISBN 84-7978-650-7. Madrid, Spain. 2004.
  • V. Daza, G. Di Crescenzo, J. Herranz and G. Sáez: Algunas estructuras de acceso multipartitas ideales. VIII Reunión Española de Criptología y Seguridad de laInformación. Proceedings pp. 205-213. ISBN 84-7978-650-7. Madrid, Spain. 2004.

2005

  • I. Jiménez Calvo, J. Herranz and G. Sáez: Un nuevo algoritmo para buscar valores pequeños no nulos de |x^3-y^2|. MAT.ES 2005 Primer Congreso Conjunto de Matemáticas RSME-SCM-SEIO-SEMA. Proceedings Valencia, Spain. 2005.

2006

  • G. Sáez: Mejoras y nuevos modelos en esquemas para distribución de claves autoreparables. IX Reunión Española de Criptología y Seguridad de la Información, pp. 47-62. Barcelona, 2006.

Research interests | International journals and conferences | Spanish conferences | Top