Publications

@article{diazsanchez009,

title = {Specification and Unattended Deployment of Home Networks at the Edge of the Network},

author = {Iván Bernabé-Sánchez and Daniel Díaz-Sánchez and Mario Muñoz-Organero},

url = {https://ieeexplore.ieee.org/document/9173527},

doi = {10.1109/TCE.2020.3018543},

issn = {0098-3063},

year  = {2020},

date = {2020-08-21},

urldate = {2020-08-21},

journal = {IEEE TRANSACTIONS ON CONSUMER ELECTRONICS},

volume = {66},

issue = {4},

pages = {279 - 288},

abstract = {Consumer devices continue to expand their capabilities by connecting to digital services and other devices to form information-sharing ecosystems. This is complex and requires meeting connection requirements and minimal processing capabilities to ensure communication. The emergence of new services, and the evolution of current technologies, constantly redefine the rules of the game by opening up new possibilities and increasing competition among service providers. Paradigms such as edge computing, softwarization of physical devices, self-configuration mechanisms, definition of software as a code and interoperability between devices, define design principles to be taken into account in future service infrastructures. This work analyzes these principles and presents a programmable architecture in which services and virtual devices are instantiated in any computing infrastructure, as cloud or edge computing, upon request according to the needs specified by service providers or users. Considering that the target computing infrastructures are heterogeneous, the solution defines network elements and provides network templates to ensure it can be deployed on different infrastructures irrespectively of the vendor. A prototype has been developed and tested on a virtualized cloud-based home network relying on open source solutions.},

keywords = {Cloud computing, connected consumer devices, edge computing, fog computing, joint digital transformation, orchestrator},

pubstate = {published},

tppubtype = {article}

}

@article{diazsanchez002,

title = {A distributed transcoding and content protection system: Enabling pay per quality using the cloud},

author = {Daniel Díaz-Sánchez and Rosa Sánchez-Guerrero and Patricia Arias and Florina Almenarez and Andrés Marín },

url = {https://link.springer.com/article/10.1007/s11235-014-9952-x},

doi = {https://doi.org/10.1007/s11235-014-9952-x},

issn = {1572-9451},

year  = {2015},

date = {2015-01-01},

urldate = {2015-01-01},

journal = {Telecommunication Systems},

volume = {61},

issue = {1},

pages = {59 - 76},

abstract = {Video coding is a process for adapting media content to the constraints of transmission networks delivery and terminal device visualization. Moreover, content protection is also necessary. Nowadays the heterogeneity of client devices is increasing leading to different resolutions, qualities and form factors. Due to this, transcoding and protection are essential processes to be conducted in modern video distribution networks to adapt video to devices and network constraints and to enable pay per quality schemas enforcing content licenses. Unfortunately, transcoding and protection can be no longer considered linear since every single content should be transcoded in several formats and sometimes protected, so it would require a long time to finish. Modern scalable coding techniques, as H264 SVC, can help to save processing power and bandwidth providing in a single stream several video versions. However, if the enhancements of a SVC encoded content are protected separately, it would possible to enable pay-per-quality providing an additional degree of freedom to content delivery industry. Unfortunatelly, transcoding and protection entail huge doses of processing power at provider side and should be distributed. Moreover, processing key streams to decrypt enhancements that were encrypted separately can increase the complexity at receiver side. Cloud computing emerges as a potential solution for coping with large population of users with heterogeneous visualization devices. The elastic nature of cloud computing can be an advantage given the difficulty to predict the computing resources video content would require to be distributed during the entire content life. This article describes a system that distributes and parallelizes the video transcoding process as well as the content encryption, following the SaaS approach in cloud computing. Moreover, the article describes an experimental approach for generating and processing a flexible key stream that would help to simplify key management at receiver side and would allow legacy receivers to consume SVC content with separate enhancement protection.},

keywords = {Cloud computing, content protection keyword, raudo2, transcoding},

pubstate = {published},

tppubtype = {article}

}

@article{diazsanchez001,

title = {Media Gateway: bringing privacy to Private Multimedia Clouds connections},

author = {Daniel Díaz-Sánchez and Florina Almenarez and Andrés Marín and Rosa Sánchez-Guerrero and Patricia Arias },

url = {https://link.springer.com/article/10.1007/s11235-013-9783-1},

doi = {https://doi.org/10.1007/s11235-013-9783-1},

issn = {1572-9451},

year  = {2014},

date = {2014-02-01},

urldate = {2014-02-01},

journal = {Telecommunication Systems},

volume = {55},

issue = {2},

pages = {315-330},

abstract = {The growing interest in media sharing combined with the explosion of social applications have opened an opportunity window for cloud based applications for media management as Media Cloud, described in this article, that has brought the concept of Cloud Computing to home environments. Media Cloud provides a comprehensive and efficient solution for managing content among federated home environments. As part of the purpose of empowering the user role as well as to improve user experience, we placed significant efforts on interoperability and privacy protection when it comes to accessing cloud resources from other networks. This article describes a solution that enables limited devices to access contents located in private clouds, as Media Cloud, with the cooperation of network providers.},

keywords = {Cloud computing, multimedia, privacy, streaming},

pubstate = {published},

tppubtype = {article}

}

@article{ariascabarcos004,

title = {SuSSo: Seamless and Ubiquitous Single Sign-on for Cloud Service Continuity across devices},

author = {Patricia Arias-Cabarcos and Florina Almenárez-Mendoza and Rosa Sánchez-Guerrero and Andrés Marín-López and Daniel Díaz-Sánchez},

url = {https://ieeexplore.ieee.org/document/6415016

https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6415016},

doi = {https://doi.org/10.1109/TCE.2012.6415016},

issn = {0098-3063},

year  = {2012},

date = {2012-11-01},

urldate = {2012-11-01},

journal = {IEEE TRANSACTIONS ON CONSUMER ELECTRONICS},

volume = {58},

issue = {4},

pages = {1425-1433},

abstract = {The great variety of consumer electronic devices with support of wireless communications combined with the emerging Cloud Computing paradigm is paving the way to real anytime/anywhere computing. In this context, many services, such as music or video streaming, are delivered to the clients using Cloud-based providers. However, service continuity when moving across different terminals is still a major challenge. This paper proposes SuSSo, a novel middleware architecture that allows sessions initiated from one device to be seamlessly transferred to a second one, as might be desirable in the enjoyment of long running media.},

keywords = {Cloud computing, Computer architecture, context, middleware, Performance evaluation, personal multimedia devices, raudo2, Security, service continuity, sessionhandoff, xml},

pubstate = {published},

tppubtype = {article}

}

@article{ariascabarcos001,

title = {A Metric-Based Approach to Assess Risk for "On Cloud" Federated Identity Management},

author = {Patricia Arias-Cabarcos and Florina Almenárez-Mendoza and Andrés Marín-López and Daniel Díaz-Sánchez and Rosa Sánchez-Guerrero },

url = {https://link.springer.com/article/10.1007/s10922-012-9244-2},

doi = {https://doi.org/10.1007/s10922-012-9244-2},

issn = {1573-7705},

year  = {2012},

date = {2012-07-04},

urldate = {2012-07-04},

journal = {Journal of Network and Systems Management},

volume = {20},

issue = {4},

pages = {513-533},

abstract = {The cloud computing paradigm is set to become the next explosive revolution on the Internet, but its adoption is still hindered by security problems. One of the fundamental issues is the need for better access control and identity management systems. In this context, Federated Identity Management (FIM) is identified by researchers and experts as an important security enabler, since it will play a vital role in allowing the global scalability that is required for the successful implantation of cloud technologies. However, current FIM frameworks are limited by the complexity of the underlying trust models that need to be put in place before inter-domain cooperation. Thus, the establishment of dynamic federations between the different cloud actors is still a major research challenge that remains unsolved. Here we show that risk evaluation must be considered as a key enabler in evidence-based trust management to foster collaboration between cloud providers that belong to unknown administrative domains in a secure manner. In this paper, we analyze the Federated Identity Management process and propose a taxonomy that helps in the classification of the involved risks in order to mitigate vulnerabilities and threats when decisions about collaboration are made. Moreover, a set of new metrics is defined to allow a novel form of risk quantification in these environments. Other contributions of the paper include the definition of a generic hierarchical risk aggregation system, and a descriptive use-case where the risk computation framework is applied to enhance cloud-based service provisioning.

},

keywords = {Cloud computing, consequence, federation, risk assessment, SAML, servicioseguridad, Trust management},

pubstate = {published},

tppubtype = {article}

}

@article{almenarez003,

title = {Enhancing privacy and dynamic federation in IdM for consumer cloud computing},

author = {Rosa Sánchez and Florina Almenares and Patricia Arias and Daniel Díaz-Sánchez and Andrés Marín},

url = {https://ieeexplore.ieee.org/document/6170060

https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6170060},

doi = {https://doi.org/10.1109/TCE.2012.6170060},

issn = {0098-3063},

year  = {2012},

date = {2012-02-01},

urldate = {2012-02-01},

journal = {IEEE TRANSACTIONS ON CONSUMER ELECTRONICS},

volume = {58},

issue = {1},

pages = {95-103},

abstract = {Consumer cloud computing paradigm has emerged as the natural evolution and integration of advances in several areas including distributed computing, service oriented architecture and consumer electronics. In this complex ecosystem, security and identity management challenges have cropped up, given their dynamism and heterogeneity. As a direct consequence, dynamic federated identity management with privacy improvements has arisen as an indispensable mechanism to enable the global scalability and usability that are required for the successful implantation of Cloud technologies. With these requirements in mind, we present an IdM architecture based on privacy and reputation extensions compliance with the SAMLv2/ID-FF standards.},

keywords = {authentication, Cloud computing, Computer architecture, context, desarrollodespliegue, privacy, Protocols},

pubstate = {published},

tppubtype = {article}

}

@article{diazsanchez008,

title = {Media Cloud: An Open Cloud Computing Middleware for Content Management},

author = {Daniel Díaz-Sánchez and Florina Almenarez and Andrés Marín and Davide Proserpio and Patricia Arias Cabarcos.},

url = {https://ieeexplore.ieee.org/document/5955247

https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5955247},

doi = {https://doi.org/10.1109/TCE.2011.5955247},

issn = {0098-3063},

year  = {2011},

date = {2011-05-03},

urldate = {2011-05-03},

journal = {IEEE TRANSACTIONS ON CONSUMER ELECTRONICS},

volume = {57},

issue = {2},

pages = {970 - 978},

abstract = {Cloud computing allows accessing resources across Internet transparently: requiring no expertise in, or control over the underlying infrastructure. There is an increasing interest in sharing media files with family and friends. However, UPnP or DLNA were not designed for media distribution beyond the boundaries of a local network and manage media files through web applications can be tedious. To overcome this problem, we propose Media Cloud, a middleware for Set-top boxes for classifying, searching, and delivering media inside home network and across the cloud that interoperates with UPnP and DLNA.},

keywords = {Cloud computing, Home Automation, Indexes, Media, netlab, Protocols, Social network services},

pubstate = {published},

tppubtype = {article}

}