    @inproceedings {morales2019,
	title = {Prueba de concepto de Autoridad de Certificaci{\'o}n usando Computaci{\'o}n Segura  Multiparte},
	booktitle = {XIV Jornadas de Ingenier{\'\i}a Telem{\'a}tica},
	year = {2019},
	month = {10/2019},
	pages = {50-53},
	address = {Zaragoza},
	abstract = {Este trabajo pretende analizar el paradigma de la Computaci{\'o}n Segura Multiparte y sus posibles aplicaciones en el campo de la criptograf{\'\i}a. Se plantea como modelo alternativo, mas escalable y seguro al uso de m{\'o}dulos hardware de seguridad para aplicaciones que requieran de Terceras Partes Confiables. Concretamente, se ha integrado un protocolo de criptograf{\'\i}a RSA multiparte con la librer{\'\i}a certbuilder, para la creaci{\'o}n de certificados X.509. De esta forma se asegura que la creaci{\'o}n de los certificados ra{\'\i}z de la Infraestructura de Clave Publica se realiza de forma que la generaci{\'o}n de claves y firma de este se ejecute {\'\i}ntegramente sobre el sistema multiparte, con un modelo de tres partes que trabaja con circuitos aritm{\'e}ticos, sin que ninguna de ellas, de forma aislada, tenga posibilidad de comprometer la clave privada correspondiente. Para comprobar la viabilidad del sistema se han realizado pruebas de generaci{\'o}n de certificados con diferentes longitudes de clave, siendo el proceso determinante la creaci{\'o}n de las claves. Los elevados tiempos hacen que una aplicaci{\'o}n como esta no sea asumible en otros escenarios, pero creemos que para el caso de la creaci{\'o}n de los certificados ra{\'\i}z de una infraestructura de clave p{\'u}blica las garant{\'\i}as avanzadas de seguridad compensan el tiempo extra.
},
	keywords = {privacy, Secure Multiparty computation},
	isbn = {978-84-09-21112-8},
	doi = {10.26754/uz.978-84-09-21112-8},
	author = {Daniel Morales and Isaac Agudo}
}
@incollection {nunez15privacy,
	title = {Privacy-Preserving Identity Management as a Service},
	booktitle = {Accountability and Security in the Cloud},
	series = {Lecture Notes in Computer Science},
	volume = {8937},
	year = {2015},
	pages = {114-125},
	publisher = {Springer International Publishing},
	organization = {Springer International Publishing},
	abstract = {<p>In this paper we tackle the problem of privacy and confidentiality in Identity Management as a Service (IDaaS). The adoption of cloud computing technologies by organizations has fostered the externalization of the identity management processes, shaping the concept of Identity Management as a Service. However, as it has happened to other cloud-based services, the cloud poses serious risks to the users, since they lose the control over their data. As part of this work, we analyze these concerns and present a model for privacy-preserving IDaaS, called BlindIdM, which is designed to provide data privacy protection through the use of cryptographic safeguards.</p>
},
	keywords = {Cloud Computing, Cryptography, Identity Management as a Service, privacy},
	isbn = {978-3-319-17198-2},
	doi = {10.1007/978-3-319-17199-9_5},
	url = {http://dx.doi.org/10.1007/978-3-319-17199-9_5},
	author = {David Nu{\~n}ez and Isaac Agudo and Javier Lopez},
	editor = {Massimo Felici and Carmen Fernandez-Gago}
}
@article {agudo2013,
	title = {A Privacy-Aware Continuous Authentication Scheme for Proximity-Based Access Control},
	journal = {Computers \& Security},
	volume = {39 (B)},
	year = {2013},
	month = {11/2013},
	pages = {117-126},
	publisher = {Elsevier},
	abstract = {<p>Continuous authentication is mainly associated with the use of biometrics to guarantee that a resource is being accessed by the same user throughout the usage period. Wireless devices can also serve as a supporting technology for continuous authentication or even as a complete alternative to biometrics when accessing proximity-based services. In this paper we present the implementation of a secure, non-invasive continuous authentication scheme supported by the use of Wearable Wireless Devices (WWD), which allow users to gain access to proximity-based services while preserving their privacy. Additionally we devise an improved scheme that circumvents some of the limitations of our implementation.</p>
},
	issn = {0167-4048},
	doi = {10.1016/j.cose.2013.05.004},
	author = {Isaac Agudo and Ruben Rios and Javier Lopez}
}
