Contact information
| Name | Andrés Marín Lopez |
Academic
| jobline | Associate Professor |
Contact
Publications
Blanco-Romero, Javier; Lorenzo, Vicente; Almenares, Florina; Díaz-Sánchez, Daniel; García-Rubio, Carlos; Campo, Celeste; Marín, Andrés
Evaluating integration methods of a quantum random number generator in OpenSSL for TLS Proceedings Article
In: Computer Networks, 2024, ISBN: 1389-1286.
@inproceedings{javierblanco003,
title = {Evaluating integration methods of a quantum random number generator in OpenSSL for TLS},
author = {Javier Blanco-Romero and Vicente Lorenzo and Florina Almenares and Daniel Díaz-Sánchez and Carlos García-Rubio and Celeste Campo and Andrés Marín},
url = {https://www.sciencedirect.com/science/article/pii/S1389128624007096?via%3Dihub},
doi = {https://doi.org/10.1016/j.comnet.2024.110877},
isbn = {1389-1286},
year = {2024},
date = {2024-10-25},
urldate = {2024-10-25},
volume = {255},
publisher = {Computer Networks},
abstract = {The rapid advancement of quantum computing poses a significant threat to conventional cryptography. Whilst post-quantum cryptography (PQC) stands as the prevailing trend for fortifying the security of cryptographic systems, the coexistence of quantum and classical computing paradigms presents an opportunity to leverage the strengths of both technologies, for instance, nowadays the use of Quantum Random Number Generators (QRNGs) – considered as True Random Number Generators (TRNGs) – opens up the possibility of discussing hybrid systems. In this paper, we evaluate both aspects, on the one hand, we use hybrid TLS (Transport Layer Security) protocol that leverages the widely used secure protocol on the Internet and integrates PQC algorithms, and, on the other hand, we evaluate two approaches to integrate a QRNG, i.e., Quantis PCIe-240M, in OpenSSL 3.0 to be used by TLS. Both approaches are compared through a Nginx Web server, that uses OpenSSL’s implementation of TLS 1.3 for secure web communication. Our findings highlight the importance of optimizing such integration method, because while direct integration can lead to performance penalties specific to the method and hardware used, alternative methods demonstrate the potential for efficient QRNG deployment in cryptographic systems.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
The rapid advancement of quantum computing poses a significant threat to conventional cryptography. Whilst post-quantum cryptography (PQC) stands as the prevailing trend for fortifying the security of cryptographic systems, the coexistence of quantum and classical computing paradigms presents an opportunity to leverage the strengths of both technologies, for instance, nowadays the use of Quantum Random Number Generators (QRNGs) – considered as True Random Number Generators (TRNGs) – opens up the possibility of discussing hybrid systems. In this paper, we evaluate both aspects, on the one hand, we use hybrid TLS (Transport Layer Security) protocol that leverages the widely used secure protocol on the Internet and integrates PQC algorithms, and, on the other hand, we evaluate two approaches to integrate a QRNG, i.e., Quantis PCIe-240M, in OpenSSL 3.0 to be used by TLS. Both approaches are compared through a Nginx Web server, that uses OpenSSL’s implementation of TLS 1.3 for secure web communication. Our findings highlight the importance of optimizing such integration method, because while direct integration can lead to performance penalties specific to the method and hardware used, alternative methods demonstrate the potential for efficient QRNG deployment in cryptographic systems.
Lorenzo, Vicente; Blanco-Romero, Javier; Almenares, Florina; Díaz-Sánchez, Daniel; García-Rubio, Carlos; Campo, Celeste; Marín, Andrés
Comparing Pseudo, Classical True and Quantum Random Number Generators Using Standard Quality Assessments Conference
XVIII Reunión Española sobre Criptología y Seguridad de la Información (RECSI 2024), León, 23 al 25 de Octubre, 2024., 2024.
@conference{nokey,
title = {Comparing Pseudo, Classical True and Quantum Random Number Generators Using Standard Quality Assessments},
author = {Vicente Lorenzo and Javier Blanco-Romero and Florina Almenares and Daniel Díaz-Sánchez and Carlos García-Rubio and Celeste Campo and Andrés Marín},
year = {2024},
date = {2024-10-25},
urldate = {2024-10-25},
booktitle = {XVIII Reunión Española sobre Criptología y Seguridad de la Información (RECSI 2024), León, 23 al 25 de Octubre, 2024.},
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pubstate = {published},
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Chica, Sergio; Marín-López, Andrés; Arroyo, David; Almenares-Mendoza, Florina; Díaz-Sánchez, Daniel
Enhancing the anonymity and auditability of whistleblowers protection Proceedings Article
In: pp. 413 - 422, Springer International Publishing, 2023, ISBN: 978-3-031-21229-1.
@inproceedings{pa057,
title = {Enhancing the anonymity and auditability of whistleblowers protection},
author = {Sergio Chica and Andrés Marín-López and David Arroyo and Florina Almenares-Mendoza and Daniel Díaz-Sánchez},
doi = {https://doi.org/10.1007/978-3-031-21229-1_38},
isbn = {978-3-031-21229-1},
year = {2023},
date = {2023-01-08},
pages = {413 - 422},
publisher = {Springer International Publishing},
abstract = {In our democracy a trade-off between checks and balances is mandatory. To play the role of balances, it is necessary to have information that is often only obtainable through channels that ensure the anonymity of the source. Here we present a work in progress of a system that provides anonymity to sources in a open and auditable system, oriented to audit systems of critical infrastructure and built on our previous work autoauditor.},
keywords = {},
pubstate = {published},
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In our democracy a trade-off between checks and balances is mandatory. To play the role of balances, it is necessary to have information that is often only obtainable through channels that ensure the anonymity of the source. Here we present a work in progress of a system that provides anonymity to sources in a open and auditable system, oriented to audit systems of critical infrastructure and built on our previous work autoauditor.
Díaz-Sanchez, Daniel; Almenarez-Mendoza, Florina; Marín-López, Andres; Rojo-Rivas, Isabel
A Hybrid Approach to Ephemeral PKI Credentials Validation and Auditing Proceedings Article
In: Proceedings of the International Conference on Ubiquitous Computing & Ambient Intelligence (UCAmI 2022), pp. 1043 - 1054, Springer International Publishing, 2022, ISBN: 978-3-031-21332-8.
@inproceedings{pa056,
title = {A Hybrid Approach to Ephemeral PKI Credentials Validation and Auditing},
author = {Daniel Díaz-Sanchez and Florina Almenarez-Mendoza and Andres Marín-López and Isabel Rojo-Rivas },
isbn = {978-3-031-21332-8},
year = {2022},
date = {2022-12-20},
urldate = {2022-12-20},
booktitle = {Proceedings of the International Conference on Ubiquitous Computing & Ambient Intelligence (UCAmI 2022)},
pages = {1043 - 1054},
publisher = {Springer International Publishing},
abstract = {IoT/M2M solutions are expected to rely on near computing infrastructures for deployment of services, frequently ephemeral, that will need adequate protection. Communication protocols in IoT services have widely adopted TLS/PKI as the de facto security standard despite PKI was not designed for issuing short lived credentials. Moreover, after several Certificate Authorities were compromised, some Certificate Pinning proposal were developed to give an additional verification to PKI certificates. Some Certificate Pinning solutions, as Certificate Transparency, provide long term auditing information for PKI certificates issued by renowned Certificate Authorities only, whereas others, as DANE, are able to verify self-issued certificates and give support for security islands that would benefit the development of IoT/M2M micro services but cannot provide long term auditing information. This article describe DANEAudits, a novel service with the objective of complementing DANE with long term auditing information without the need of new Trusted Third Parties different from the information owner.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
IoT/M2M solutions are expected to rely on near computing infrastructures for deployment of services, frequently ephemeral, that will need adequate protection. Communication protocols in IoT services have widely adopted TLS/PKI as the de facto security standard despite PKI was not designed for issuing short lived credentials. Moreover, after several Certificate Authorities were compromised, some Certificate Pinning proposal were developed to give an additional verification to PKI certificates. Some Certificate Pinning solutions, as Certificate Transparency, provide long term auditing information for PKI certificates issued by renowned Certificate Authorities only, whereas others, as DANE, are able to verify self-issued certificates and give support for security islands that would benefit the development of IoT/M2M micro services but cannot provide long term auditing information. This article describe DANEAudits, a novel service with the objective of complementing DANE with long term auditing information without the need of new Trusted Third Parties different from the information owner.
Díaz-Sánchez, Daniel; Guerrero, Rosa Sánchez; López, Andrés Marín; Almenares, Florina; Arias, Patricia
A H.264 SVC distributed content protection system with flexible key stream generation Proceedings Article
In: 2012 IEEE Second International Conference on Consumer Electronics - Berlin (ICCE-Berlin), IEEE, 2022, ISSN: 2166-6814.
@inproceedings{PA012,
title = {A H.264 SVC distributed content protection system with flexible key stream generation},
author = {Daniel Díaz-Sánchez and Rosa Sánchez Guerrero and Andrés Marín López and Florina Almenares and Patricia Arias},
url = {https://ieeexplore.ieee.org/document/6336520},
doi = {https://doi.org/10.1109/ICCE-Berlin.2012.6336520},
issn = {2166-6814},
year = {2022},
date = {2022-10-22},
urldate = {2022-10-22},
booktitle = {2012 IEEE Second International Conference on Consumer Electronics - Berlin (ICCE-Berlin)},
publisher = {IEEE},
abstract = {Modern scalable coding techniques, as H264 SVC, are adequate to save processing power and bandwidth. Moreover, if the enhancements of a SVC encoded content are protected, it is possible to enable pay-per-quality systems. 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. This abstract describes a distributed system for content encoding and protection that generates a flexible key stream that simplifies the receiver.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Modern scalable coding techniques, as H264 SVC, are adequate to save processing power and bandwidth. Moreover, if the enhancements of a SVC encoded content are protected, it is possible to enable pay-per-quality systems. 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. This abstract describes a distributed system for content encoding and protection that generates a flexible key stream that simplifies the receiver.
Rojo-Rivas, MaríaIsabel; Díaz-Sánchez, Daniel; Almenarez, Florina; Marín-Lopez, Andrés
Kriper: A blockchain network with permissioned storage Journal Article
In: Future Generation Computer Systems, vol. 138, pp. 160-171, 2022, ISSN: 0167-739X.
@article{diazsanchez010,
title = {Kriper: A blockchain network with permissioned storage},
author = {MaríaIsabel Rojo-Rivas and Daniel Díaz-Sánchez and Florina Almenarez and Andrés Marín-Lopez},
doi = {https://doi.org/10.1016/j.future.2022.08.006},
issn = {0167-739X},
year = {2022},
date = {2022-08-17},
urldate = {2022-08-17},
journal = {Future Generation Computer Systems},
volume = {138},
pages = {160-171},
abstract = {Blockchain has been a revolution in the past few years. Beyond the new currencies that were created around different incarnations of the blockchain concept, there are many other contributions that provide interesting services as a data linked structure using a decentralized network that provide a high level of security. Companies have developed many projects to incorporate blockchain into their business logic pursuing to incorporate other related services as persistence of large volumes of data, privacy or anonymity of transactions, distributed data processing, security (confidentiality, integrity, and availability), document management or micro messages in real time. Nevertheless, as it will be discussed in this article, current blockchains do not meet the needs of companies in many aspects, leading to a scarce or superficial adoption. This article introduces Kriper, a blockchain that aims at meeting corporate world needs by responding with a community-based, open blockchain that may also be segregated and private for certain uses whereas it provides a permissioned distributed storage and micro message lightweight services.},
keywords = {},
pubstate = {published},
tppubtype = {article}
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Blockchain has been a revolution in the past few years. Beyond the new currencies that were created around different incarnations of the blockchain concept, there are many other contributions that provide interesting services as a data linked structure using a decentralized network that provide a high level of security. Companies have developed many projects to incorporate blockchain into their business logic pursuing to incorporate other related services as persistence of large volumes of data, privacy or anonymity of transactions, distributed data processing, security (confidentiality, integrity, and availability), document management or micro messages in real time. Nevertheless, as it will be discussed in this article, current blockchains do not meet the needs of companies in many aspects, leading to a scarce or superficial adoption. This article introduces Kriper, a blockchain that aims at meeting corporate world needs by responding with a community-based, open blockchain that may also be segregated and private for certain uses whereas it provides a permissioned distributed storage and micro message lightweight services.
Marín-López, Andrés; Chica-Manjarrez, Sergio; Arroyo, David; Almenares-Mendoza, Florina; Díaz-Sánchez, Daniel
Security Information Sharing in Smart Grids: Persisting Security Audits to the Blockchain Journal Article
In: Electronics, vol. 9, pp. 1865, 2020, ISSN: 2079-9292.
@article{marin002,
title = {Security Information Sharing in Smart Grids: Persisting Security Audits to the Blockchain},
author = {Andrés Marín-López and Sergio Chica-Manjarrez and David Arroyo and Florina Almenares-Mendoza and Daniel Díaz-Sánchez },
url = {https://www.mdpi.com/2079-9292/9/11/1865
},
doi = {https://doi.org/10.3390/electronics9111865},
issn = {2079-9292},
year = {2020},
date = {2020-11-06},
urldate = {2020-11-06},
journal = {Electronics},
volume = {9},
pages = {1865},
abstract = {With the transformation in smart grids, power grid companies are becoming increasingly
dependent on data networks. Data networks are used to transport information and commands for
optimizing power grid operations: Planning, generation, transportation, and distribution. Performing
periodic security audits is one of the required tasks for securing networks, and we proposed in a
previous work AUTOAUDITOR, a system to achieve automatic auditing. It was designed according
to the specific requirements of power grid companies, such as scaling with the huge number of
heterogeneous equipment in power grid companies. Though pentesting and security audits are
required for continuous monitoring, collaboration is of utmost importance to fight cyber threats.
In this paper we work on the accountability of audit results and explore how the list of audit result
records can be included in a blockchain, since blockchains are by design resistant to data modification.
Moreover, blockchains endowed with smart contracts functionality boost the automation of both
digital evidence gathering, audit, and controlled information exchange. To our knowledge, no such
system exists. We perform throughput evaluation to assess the feasibility of the system and show
that the system is viable for adaptation to the inventory systems of electrical companies.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
With the transformation in smart grids, power grid companies are becoming increasingly
dependent on data networks. Data networks are used to transport information and commands for
optimizing power grid operations: Planning, generation, transportation, and distribution. Performing
periodic security audits is one of the required tasks for securing networks, and we proposed in a
previous work AUTOAUDITOR, a system to achieve automatic auditing. It was designed according
to the specific requirements of power grid companies, such as scaling with the huge number of
heterogeneous equipment in power grid companies. Though pentesting and security audits are
required for continuous monitoring, collaboration is of utmost importance to fight cyber threats.
In this paper we work on the accountability of audit results and explore how the list of audit result
records can be included in a blockchain, since blockchains are by design resistant to data modification.
Moreover, blockchains endowed with smart contracts functionality boost the automation of both
digital evidence gathering, audit, and controlled information exchange. To our knowledge, no such
system exists. We perform throughput evaluation to assess the feasibility of the system and show
that the system is viable for adaptation to the inventory systems of electrical companies.
dependent on data networks. Data networks are used to transport information and commands for
optimizing power grid operations: Planning, generation, transportation, and distribution. Performing
periodic security audits is one of the required tasks for securing networks, and we proposed in a
previous work AUTOAUDITOR, a system to achieve automatic auditing. It was designed according
to the specific requirements of power grid companies, such as scaling with the huge number of
heterogeneous equipment in power grid companies. Though pentesting and security audits are
required for continuous monitoring, collaboration is of utmost importance to fight cyber threats.
In this paper we work on the accountability of audit results and explore how the list of audit result
records can be included in a blockchain, since blockchains are by design resistant to data modification.
Moreover, blockchains endowed with smart contracts functionality boost the automation of both
digital evidence gathering, audit, and controlled information exchange. To our knowledge, no such
system exists. We perform throughput evaluation to assess the feasibility of the system and show
that the system is viable for adaptation to the inventory systems of electrical companies.
Chica-Manjarrez, Sergio; Marín-López, Andrés; Díaz-Sánchez, Daniel; Almenares-Mendoza, Florina
On the Automation of Auditing in Power Grid Companies Proceedings Article
In: Actas de congreso internacional, Citas Google 2, CORE C, pp. 331 - 340, 2020, ISBN: ISSN/ISBN) 978-1-4503-5988-7.
@inproceedings{pa054,
title = {On the Automation of Auditing in Power Grid Companies},
author = {Sergio Chica-Manjarrez and Andrés Marín-López and Daniel Díaz-Sánchez and Florina Almenares-Mendoza},
doi = {10.3233/AISE200057},
isbn = {ISSN/ISBN) 978-1-4503-5988-7},
year = {2020},
date = {2020-07-23},
urldate = {2020-07-23},
booktitle = {Actas de congreso internacional, Citas Google 2, CORE C},
pages = {331 - 340},
abstract = {Auditing is a common task required to secure networks. This becomes of utter importance in power grid companies, the authorities of electricity supply. An increasing number of connected devices makes the use of semi automatic or fully automated auditing imperative. The inventory system has to incorporate the auditing results and subsequently integrate them in the security assessment of the company. The risk metrics incorporate the severity of exposures and facilitate the selection of vulnerabilities that have to be mitigated, according to the risk appetite of the company. This automatic approach has to address scale and privacy issues of large companies. In addition, connections from foreign domains that carry out the auditing involve additional risks that must be considered to effectively test the likelihood and depth of the found vulnerabilities.
In this paper we discuss the requirements of an automatic auditing system and present AUTOAUDITOR, a highly configurable module which allow companies to automatically perform pentesting in specific assets.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Auditing is a common task required to secure networks. This becomes of utter importance in power grid companies, the authorities of electricity supply. An increasing number of connected devices makes the use of semi automatic or fully automated auditing imperative. The inventory system has to incorporate the auditing results and subsequently integrate them in the security assessment of the company. The risk metrics incorporate the severity of exposures and facilitate the selection of vulnerabilities that have to be mitigated, according to the risk appetite of the company. This automatic approach has to address scale and privacy issues of large companies. In addition, connections from foreign domains that carry out the auditing involve additional risks that must be considered to effectively test the likelihood and depth of the found vulnerabilities.
In this paper we discuss the requirements of an automatic auditing system and present AUTOAUDITOR, a highly configurable module which allow companies to automatically perform pentesting in specific assets.
In this paper we discuss the requirements of an automatic auditing system and present AUTOAUDITOR, a highly configurable module which allow companies to automatically perform pentesting in specific assets.
Rubio-Drosdov, Eugenio; Díaz-Sánchez, Daniel; Marín-López, Andrés; Almenares-Mendoza, Florina
A Framework for Microservice Migration and Performance Assessment Proceedings Article
In: pp. 291 - 299, 2020, ISBN: 978-1-4503-5988-7.
@inproceedings{pa059,
title = {A Framework for Microservice Migration and Performance Assessment},
author = {Eugenio Rubio-Drosdov and Daniel Díaz-Sánchez and Andrés Marín-López and Florina Almenares-Mendoza},
doi = {doi:10.3233/AISE200053},
isbn = {978-1-4503-5988-7},
year = {2020},
date = {2020-06-25},
urldate = {2020-06-25},
pages = {291 - 299},
abstract = {In a large Smart Grid, smart meters produce tremendous amount of data that are hard to process, analyze and store. Fog computing is an environment that offers a place for collecting, computing and storing smart meter data before transmitting them to the cloud. Due to the distributed, heterogeneous and resource constrained nature of the fog computing nodes, fog applications need to be developed as a collection of interdependent, lightweight modules. Since this concept aligns with the goals of microservices architecture (MSA), efficient placement of microservices-based Smart Grid applications within fog environments has the potential to fully leverage capabilities of fog devices. Microservice architecture is an emerging software architectural style. It is based on microservices to provide several advantages over a monolithic solution, such as autonomy, composability, scalability, and fault-tolerance. However, optimizing the migration of microservices from one fog environment to other while assuring certain quality is still a big issue that needs to be addressed. In this paper, we propose an approach for assisting the migration of microservices in MSA-based Smart Grid systems, based on the analysis of their performance within the possible candidate destinations. Developers create microservices that will be eventually deployed at a given infrastructure. Either the developer, cosidering the design, or the entity deploying the service have a good knowledge of the quality required by the microservice. Due to that, they can create tests that determine if a destination meets the requirements of a given microservice and embed these tests as part of the microservice. Our goal is to automate the execution of performance tests by attaching a specification that contains the test parameters to each microservice.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
In a large Smart Grid, smart meters produce tremendous amount of data that are hard to process, analyze and store. Fog computing is an environment that offers a place for collecting, computing and storing smart meter data before transmitting them to the cloud. Due to the distributed, heterogeneous and resource constrained nature of the fog computing nodes, fog applications need to be developed as a collection of interdependent, lightweight modules. Since this concept aligns with the goals of microservices architecture (MSA), efficient placement of microservices-based Smart Grid applications within fog environments has the potential to fully leverage capabilities of fog devices. Microservice architecture is an emerging software architectural style. It is based on microservices to provide several advantages over a monolithic solution, such as autonomy, composability, scalability, and fault-tolerance. However, optimizing the migration of microservices from one fog environment to other while assuring certain quality is still a big issue that needs to be addressed. In this paper, we propose an approach for assisting the migration of microservices in MSA-based Smart Grid systems, based on the analysis of their performance within the possible candidate destinations. Developers create microservices that will be eventually deployed at a given infrastructure. Either the developer, cosidering the design, or the entity deploying the service have a good knowledge of the quality required by the microservice. Due to that, they can create tests that determine if a destination meets the requirements of a given microservice and embed these tests as part of the microservice. Our goal is to automate the execution of performance tests by attaching a specification that contains the test parameters to each microservice.
AGUILAR-IGARTUA, MÓNICA; ALMENARES-MENDOZA, FLORINA; DÍAZ-REDONDO, REBECA; MARTÍN-VICENTE, MANUELA; FORNÉ, JORDI; CAMPO, CELESTE; FERNÁNDEZ-VILAS, ANA; CRUZ-LLOPIS, LUIS; GARCÍA-RUBIO, CARLOS; MARÍN-LÓPEZ, ANDRÉS; MOHAMAD-MEZHER, AHMAD; DÍAZ-SÁNCHEZ, DANIEL; CEREZO-COSTAS, HÉCTOR; REBOLLO-MONEDERO, DAVID; ARIAS-CABARCOS, PATRICIA; RICO-NOVELLA, FRANCISCO JOSÉ
INRISCO: INcident monitoRing in Smart COmmunities Journal Article
In: IEEE Access, vol. 8, pp. 72435 - 72460, 2020, ISSN: 2169-3536.
@article{almenarez006,
title = {INRISCO: INcident monitoRing in Smart COmmunities},
author = {MÓNICA AGUILAR-IGARTUA AND FLORINA ALMENARES-MENDOZA AND REBECA DÍAZ-REDONDO AND MANUELA MARTÍN-VICENTE AND JORDI FORNÉ AND CELESTE CAMPO AND ANA FERNÁNDEZ-VILAS AND LUIS CRUZ-LLOPIS AND CARLOS GARCÍA-RUBIO AND ANDRÉS MARÍN-LÓPEZ AND AHMAD MOHAMAD-MEZHER AND DANIEL DÍAZ-SÁNCHEZ AND HÉCTOR CEREZO-COSTAS AND DAVID REBOLLO-MONEDERO AND PATRICIA ARIAS-CABARCOS AND FRANCISCO JOSÉ RICO-NOVELLA
},
url = {https://ieeexplore.ieee.org/document/9064504
https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9064504},
doi = {https://doi.org/10.1109/ACCESS.2020.2987483},
issn = {2169-3536},
year = {2020},
date = {2020-04-13},
urldate = {2020-04-13},
journal = {IEEE Access},
volume = {8},
pages = {72435 - 72460},
abstract = {Major advances in information and communication technologies (ICTs) make citizens to be considered as sensors in motion. Carrying their mobile devices, moving in their connected vehicles or actively participating in social networks, citizens provide a wealth of information that, after properly processing, can support numerous applications for the benefit of the community. In the context of smart communities, the INRISCO [1] proposal intends for (i) the early detection of abnormal situations in cities (i.e., incidents), (ii) the analysis of whether, according to their impact, those incidents are really adverse for the community; and (iii) the automatic actuation by dissemination of appropriate information to citizens and authorities. Thus, INRISCO will identify and report on incidents in traffic (jam, accident) or public infrastructure (e.g., works, street cut), the occurrence of specific events that affect other citizens' life (e.g., demonstrations, concerts), or environmental problems (e.g., pollution, bad weather). It is of particular interest to this proposal the identification of incidents with a social and economic impact, which affects the quality of life of citizens.},
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Major advances in information and communication technologies (ICTs) make citizens to be considered as sensors in motion. Carrying their mobile devices, moving in their connected vehicles or actively participating in social networks, citizens provide a wealth of information that, after properly processing, can support numerous applications for the benefit of the community. In the context of smart communities, the INRISCO [1] proposal intends for (i) the early detection of abnormal situations in cities (i.e., incidents), (ii) the analysis of whether, according to their impact, those incidents are really adverse for the community; and (iii) the automatic actuation by dissemination of appropriate information to citizens and authorities. Thus, INRISCO will identify and report on incidents in traffic (jam, accident) or public infrastructure (e.g., works, street cut), the occurrence of specific events that affect other citizens' life (e.g., demonstrations, concerts), or environmental problems (e.g., pollution, bad weather). It is of particular interest to this proposal the identification of incidents with a social and economic impact, which affects the quality of life of citizens.
Díaz-Sánchez, Daniel; Marín-Lopez, Andrés; Mendoza, Florina Almenárez; Cabarcos, Patricia Arias
DNS/DANE Collision-Based Distributed and Dynamic Authentication for Microservices in IoT † Journal Article
In: Sensors, vol. 19, iss. 15, pp. 1-23, 2019, ISSN: 1424-8220.
@article{Diaz_Sanchez_2019,
title = {DNS/DANE Collision-Based Distributed and Dynamic Authentication for Microservices in IoT †},
author = {Daniel Díaz-Sánchez and Andrés Marín-Lopez and Florina Almenárez Mendoza and Patricia Arias Cabarcos},
url = {http://dx.doi.org/10.3390/s19153292
/download/DNS_DANE_Collision-Based_Distributed_and_Dynamic_Authentication_for_Microservices_in_IoT.pdf},
doi = {https://doi.org/10.3390/s19153292},
issn = {1424-8220},
year = {2019},
date = {2019-07-26},
urldate = {2019-07-26},
journal = {Sensors},
volume = {19},
issue = {15},
pages = {1-23},
publisher = {MDPI AG},
abstract = {IoT devices provide real-time data to a rich ecosystem of services and applications. The volume of data and the involved subscribe/notify signaling will likely become a challenge also for access and core networks. To alleviate the core of the network, other technologies like fog computing can be used. On the security side, designers of IoT low-cost devices and applications often reuse old versions of development frameworks and software components that contain vulnerabilities. Many server applications today are designed using microservice architectures where components are easier to update. Thus, IoT can benefit from deploying microservices in the fog as it offers the required flexibility for the main players of ubiquitous computing: nomadic users. In such deployments, IoT devices need the dynamic instantiation of microservices. IoT microservices require certificates so they can be accessed securely. Thus, every microservice instance may require a newly-created domain name and a certificate. The DNS-based Authentication of Named Entities (DANE) extension to Domain Name System Security Extensions (DNSSEC) allows linking a certificate to a given domain name. Thus, the combination of DNSSEC and DANE provides microservices’ clients with secure information regarding the domain name, IP address, and server certificate of a given microservice. However, IoT microservices may be short-lived since devices can move from one local fog to another, forcing DNSSEC servers to sign zones whenever new changes occur. Considering DNSSEC and DANE were designed to cope with static services, coping with IoT dynamic microservice instantiation can throttle the scalability in the fog. To overcome this limitation, this article proposes a solution that modifies the DNSSEC/DANE signature mechanism using chameleon signatures and defining a new soft delegation scheme. Chameleon signatures are signatures computed over a chameleon hash, which have a property: a secret trapdoor function can be used to compute collisions to the hash. Since the hash is maintained, the signature does not have to be computed again. In the soft delegation schema, DNS servers obtain a trapdoor that allows performing changes in a constrained zone without affecting normal DNS operation. In this way, a server can receive this soft delegation and modify the DNS zone to cope with frequent changes such as microservice dynamic instantiation. Changes in the soft delegated zone are much faster and do not require the intervention of the DNS primary servers of the zone.},
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IoT devices provide real-time data to a rich ecosystem of services and applications. The volume of data and the involved subscribe/notify signaling will likely become a challenge also for access and core networks. To alleviate the core of the network, other technologies like fog computing can be used. On the security side, designers of IoT low-cost devices and applications often reuse old versions of development frameworks and software components that contain vulnerabilities. Many server applications today are designed using microservice architectures where components are easier to update. Thus, IoT can benefit from deploying microservices in the fog as it offers the required flexibility for the main players of ubiquitous computing: nomadic users. In such deployments, IoT devices need the dynamic instantiation of microservices. IoT microservices require certificates so they can be accessed securely. Thus, every microservice instance may require a newly-created domain name and a certificate. The DNS-based Authentication of Named Entities (DANE) extension to Domain Name System Security Extensions (DNSSEC) allows linking a certificate to a given domain name. Thus, the combination of DNSSEC and DANE provides microservices’ clients with secure information regarding the domain name, IP address, and server certificate of a given microservice. However, IoT microservices may be short-lived since devices can move from one local fog to another, forcing DNSSEC servers to sign zones whenever new changes occur. Considering DNSSEC and DANE were designed to cope with static services, coping with IoT dynamic microservice instantiation can throttle the scalability in the fog. To overcome this limitation, this article proposes a solution that modifies the DNSSEC/DANE signature mechanism using chameleon signatures and defining a new soft delegation scheme. Chameleon signatures are signatures computed over a chameleon hash, which have a property: a secret trapdoor function can be used to compute collisions to the hash. Since the hash is maintained, the signature does not have to be computed again. In the soft delegation schema, DNS servers obtain a trapdoor that allows performing changes in a constrained zone without affecting normal DNS operation. In this way, a server can receive this soft delegation and modify the DNS zone to cope with frequent changes such as microservice dynamic instantiation. Changes in the soft delegated zone are much faster and do not require the intervention of the DNS primary servers of the zone.
Díaz-Sánchez, Daniel; Marín-López, Andrés; Almenárez-Mendoza, Florina; Arias-Cabarcos, Patricia; Simon-Sherratt, R.
TLS/PKI Challenges and Certificate Pinning Techniques for IoT and M2M Secure Communications Journal Article
In: IEEE Communications Surveys and Tutorials, vol. 21, iss. 4, pp. 3502-3531, 2019, ISSN: 1553-877X.
@article{8704893,
title = {TLS/PKI Challenges and Certificate Pinning Techniques for IoT and M2M Secure Communications},
author = {Daniel Díaz-Sánchez and Andrés Marín-López and Florina Almenárez-Mendoza and Patricia Arias-Cabarcos and R. Simon-Sherratt},
url = {https://doi.org/10.1109/COMST.2019.2914453
https://ieeexplore.ieee.org/document/8704893
https://phpmyadmin.pervasive.it.uc3m.es/download/TLC-PKI-challenges-certificate-pinning.pdf},
doi = {10.1109/COMST.2019.2914453},
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date = {2019-05-02},
urldate = {2019-05-02},
journal = {IEEE Communications Surveys and Tutorials},
volume = {21},
issue = {4},
pages = {3502-3531},
abstract = {Transport layer security (TLS) is becoming the de facto standard to provide end-to-end security in the current Internet. IoT and M2M scenarios are not an exception since TLS is also being adopted there. The ability of TLS for negotiating any security parameter, its flexibility and extensibility are responsible for its wide adoption but also for several attacks. Moreover, as it relies on public key infrastructure (PKI) for authentication, it is also affected by PKI problems. Considering the advent of IoT/M2M scenarios and their particularities, it is necessary to have a closer look at TLS history to evaluate the potential challenges of using TLS and PKI in these scenarios. According to this, this paper provides a deep revision of several security aspects of TLS and PKI, with a particular focus on current certificate pinning solutions in order to illustrate the potential problems that should be addressed.},
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Transport layer security (TLS) is becoming the de facto standard to provide end-to-end security in the current Internet. IoT and M2M scenarios are not an exception since TLS is also being adopted there. The ability of TLS for negotiating any security parameter, its flexibility and extensibility are responsible for its wide adoption but also for several attacks. Moreover, as it relies on public key infrastructure (PKI) for authentication, it is also affected by PKI problems. Considering the advent of IoT/M2M scenarios and their particularities, it is necessary to have a closer look at TLS history to evaluate the potential challenges of using TLS and PKI in these scenarios. According to this, this paper provides a deep revision of several security aspects of TLS and PKI, with a particular focus on current certificate pinning solutions in order to illustrate the potential problems that should be addressed.
Almenarez, Florina; Alonso, Lucía; Marín, Andrés; Díaz-Sánchez, Daniel; Arias, Patricia
Assessment of fitness tracker security: a case of study Proceedings Article
In: 2018, ISSN: 2504-3900.
@inproceedings{pa058,
title = {Assessment of fitness tracker security: a case of study},
author = {Florina Almenarez and Lucía Alonso and Andrés Marín and Daniel Díaz-Sánchez and Patricia Arias},
url = {https://www.mdpi.com/2504-3900/2/19/1235},
doi = {https://doi.org/10.3390/proceedings2191235},
issn = {2504-3900},
year = {2018},
date = {2018-10-26},
abstract = {The wearable industry has experienced a notable growth over the last decade, especially in fitness or e-health trackers. These trackers bring new functionalities that require collecting a great amount of sensitive information about the user. This fact has made fitness trackers the target of deliberate attacks, e.g., eavesdropping, unauthorized account access, fake firmware update, and so on. For this reason, this paper describes a vulnerability study on one of the most popular fitness trackers in 2017, together with the mobile application associated to the tracker. The study results show what vulnerabilities of the communications among agents (i.e., wearable device, mobile application and server) could put at risk users sensitive information and privacy.},
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The wearable industry has experienced a notable growth over the last decade, especially in fitness or e-health trackers. These trackers bring new functionalities that require collecting a great amount of sensitive information about the user. This fact has made fitness trackers the target of deliberate attacks, e.g., eavesdropping, unauthorized account access, fake firmware update, and so on. For this reason, this paper describes a vulnerability study on one of the most popular fitness trackers in 2017, together with the mobile application associated to the tracker. The study results show what vulnerabilities of the communications among agents (i.e., wearable device, mobile application and server) could put at risk users sensitive information and privacy.
Díaz-Sánchez, Daniel; Marín-López, Andrés; Almenares-Mendoza, Florina; Arias-Cabarcos, Patricia
DNS-Based Dynamic Authentication for Microservices in IoT Proceedings Article
In: pp. 1-11, 2018, ISSN: 2504-3900.
@inproceedings{pa055,
title = {DNS-Based Dynamic Authentication for Microservices in IoT},
author = {Daniel Díaz-Sánchez and Andrés Marín-López and Florina Almenares-Mendoza and Patricia Arias-Cabarcos},
url = {https://www.mdpi.com/2504-3900/2/19/1233},
doi = {https://doi.org/10.3390/proceedings2191233},
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year = {2018},
date = {2018-10-25},
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abstract = {IoT devices provide with real-time data to a rich ecosystems of services and applications that will be of uttermost importance for ubiquitous computing. The volume of data and the involved subscribe/notify signaling will likely become a challenge also for access and core netkworks. Designers may opt for microservice architectures and fog computing to address this challenge while offering the required flexibility for the main players of ubiquitous computing: nomadic users. Microservices require strong security support for Fog computing, to rely on nodes in the boundary of the network for secure data collection and processing. IoT low cost devices face outdated certificates and security support, due to the elapsed time from manufacture to deployment. In this paper we propose a solution based on microservice architectures and DNSSEC, DANE and chameleon signatures to overcome these difficulties. We will show how trap doors included in the certificates allow a secure and flexible delegation for off-loading data collection and processing to the fog. The main result is showing this requires minimal manufacture device configuration, thanks to DNSSEC support.},
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IoT devices provide with real-time data to a rich ecosystems of services and applications that will be of uttermost importance for ubiquitous computing. The volume of data and the involved subscribe/notify signaling will likely become a challenge also for access and core netkworks. Designers may opt for microservice architectures and fog computing to address this challenge while offering the required flexibility for the main players of ubiquitous computing: nomadic users. Microservices require strong security support for Fog computing, to rely on nodes in the boundary of the network for secure data collection and processing. IoT low cost devices face outdated certificates and security support, due to the elapsed time from manufacture to deployment. In this paper we propose a solution based on microservice architectures and DNSSEC, DANE and chameleon signatures to overcome these difficulties. We will show how trap doors included in the certificates allow a secure and flexible delegation for off-loading data collection and processing to the fog. The main result is showing this requires minimal manufacture device configuration, thanks to DNSSEC support.
Hinajeros, Francisca; Almenares-Mendoza, Florina; Gomila, Patricia Arias-Cabarcos Josep-Lluis Ferrer; Marín-López, Andrés
RiskLaine: A Probabilistic Approach for Assessing Risk in Certificate-Based Security. Journal Article
In: IEEE Transactions on Information Forensics and Security , vol. 13, iss. 8, pp. 1975-1988, 2018, ISSN: 1556-6013.
@article{almenarez009b,
title = {RiskLaine: A Probabilistic Approach for Assessing Risk in Certificate-Based Security. },
author = {Francisca Hinajeros and Florina Almenares-Mendoza and Patricia Arias-Cabarcos Josep-Lluis Ferrer Gomila and Andrés Marín-López},
doi = {https://doi.org/10.1109/tifs.2018.2807788},
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date = {2018-02-19},
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journal = {IEEE Transactions on Information Forensics and Security },
volume = {13},
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abstract = {Digital certificates, based on X.509 PKI standard, are located at the core of many security mechanisms implemented in services and applications. However, the usage of certificates has revealed flaws in the certificate validation process (e.g., possibility of unavailable or non-updated data). This fact implies security risks that are not assessed. In order to address these issues that such flaws entail, we propose a novel probabilistic approach for quantitative risk assessment in X.509 PKI, together with trust management when there is uncertainty. We have evaluated our risk assessment approach and demonstrated its usage, considering as a use case the secure installation of mobile applications. The results show that our approach provides more granularity, appropriate values according to the impact, and relevant information in the risk calculation than other approaches.},
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Digital certificates, based on X.509 PKI standard, are located at the core of many security mechanisms implemented in services and applications. However, the usage of certificates has revealed flaws in the certificate validation process (e.g., possibility of unavailable or non-updated data). This fact implies security risks that are not assessed. In order to address these issues that such flaws entail, we propose a novel probabilistic approach for quantitative risk assessment in X.509 PKI, together with trust management when there is uncertainty. We have evaluated our risk assessment approach and demonstrated its usage, considering as a use case the secure installation of mobile applications. The results show that our approach provides more granularity, appropriate values according to the impact, and relevant information in the risk calculation than other approaches.
Sánchez-Guerrero, Rosa; Almenárez-Mendoza, Florina; Díaz-Sánchez, Daniel; Arias-Cabarcos, Patricia; Marín-López, Andrés
Collaborative eHealth Meets Security: Privacy-Enhancing Patient Profile Management Journal Article
In: IEEE Journal of Biomedical and Health Informatics, vol. 21, iss. 6, pp. 1741-1749, 2017, ISSN: 2168-2194 .
@article{8003467,
title = {Collaborative eHealth Meets Security: Privacy-Enhancing Patient Profile Management},
author = {Rosa Sánchez-Guerrero and Florina Almenárez-Mendoza and Daniel Díaz-Sánchez and Patricia Arias-Cabarcos and Andrés Marín-López},
url = {/download/Collaborative_eHealth_meets_Security_Privacy-Enhancing_Patient_Profile_Management.pdf
https://ieeexplore.ieee.org/document/8003467},
doi = {10.1109/JBHI.2017.2655419},
issn = {2168-2194 },
year = {2017},
date = {2017-11-01},
urldate = {2017-11-01},
journal = {IEEE Journal of Biomedical and Health Informatics},
volume = {21},
issue = {6},
pages = {1741-1749},
abstract = {Collaborative healthcare environments offer potential benefits, including enhancing the healthcare quality delivered to patients and reducing costs. As a direct consequence, sharing of electronic health records (EHRs) among healthcare providers has experienced a noteworthy growth in the last years, since it enables physicians to remotely monitor patients' health and enables individuals to manage their own health data more easily. However, these scenarios face significant challenges regarding security and privacy of the extremely sensitive information contained in EHRs. Thus, a flexible, efficient, and standards-based solution is indispensable to guarantee selective identity information disclosure and preserve patient's privacy. We propose a privacy-aware profile management approach that empowers the patient role, enabling him to bring together various healthcare providers as well as user-generated claims into an unique credential. User profiles are represented through an adaptive Merkle Tree, for which we formalize the underlying mathematical model. Furthermore, performance of the proposed solution is empirically validated through simulation experiments.},
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Collaborative healthcare environments offer potential benefits, including enhancing the healthcare quality delivered to patients and reducing costs. As a direct consequence, sharing of electronic health records (EHRs) among healthcare providers has experienced a noteworthy growth in the last years, since it enables physicians to remotely monitor patients' health and enables individuals to manage their own health data more easily. However, these scenarios face significant challenges regarding security and privacy of the extremely sensitive information contained in EHRs. Thus, a flexible, efficient, and standards-based solution is indispensable to guarantee selective identity information disclosure and preserve patient's privacy. We propose a privacy-aware profile management approach that empowers the patient role, enabling him to bring together various healthcare providers as well as user-generated claims into an unique credential. User profiles are represented through an adaptive Merkle Tree, for which we formalize the underlying mathematical model. Furthermore, performance of the proposed solution is empirically validated through simulation experiments.
Rubio-Drosdov, E; Díaz-Sánchez, D; Almenárez, F; Arias-Cabarcos, P; Marín, A
Seamless human-device interaction in the internet of things Journal Article
In: IEEE Transactions on Consumer Electronics, vol. 63, iss. 4, pp. 490-498, 2017, ISSN: 1558-4127.
@article{8246828,
title = {Seamless human-device interaction in the internet of things},
author = {E Rubio-Drosdov and D Díaz-Sánchez and F Almenárez and P Arias-Cabarcos and A Marín},
url = {/download/Seamless_Human-Device_Interaction_in_the_Internet_of_Things.pdf
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doi = {10.1109/TCE.2017.015076},
issn = {1558-4127},
year = {2017},
date = {2017-11-01},
urldate = {2017-11-01},
journal = {IEEE Transactions on Consumer Electronics},
volume = {63},
issue = {4},
pages = {490-498},
abstract = {The Internet of Things will bring a scenario in which interaction between humans and devices will be critical to allow people to use, monitor or configure Internet of Things devices. Interactions in such applications are based on traditional graphical interfaces. Devices that accept interaction based on Natural Language, e.g., through voice commands, can understand basic human orders or answering questions whenever user expressions fit into a known language pattern. Some devices can understand natural language voice commands but require sophisticated voice assistants located in the cloud, which raises significant privacy concerns. Others devices which handle voice-processing locally can perform a very limited local recognition system, requiring users to be familiar with words the system can process. The purpose of this work is to diminish the complexity of Natural Language processing in the context of IoT. The solution posited in this article allows Internet of Things devices to offload Natural Language processing to a system that improves the use of Natural Language and alleviates the need to learn or remember specific words or terms intended for triggering device actions. We have evaluated the feasibility of the design with a proof-of-concept implemented in a home environment and it was tested by real users.},
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The Internet of Things will bring a scenario in which interaction between humans and devices will be critical to allow people to use, monitor or configure Internet of Things devices. Interactions in such applications are based on traditional graphical interfaces. Devices that accept interaction based on Natural Language, e.g., through voice commands, can understand basic human orders or answering questions whenever user expressions fit into a known language pattern. Some devices can understand natural language voice commands but require sophisticated voice assistants located in the cloud, which raises significant privacy concerns. Others devices which handle voice-processing locally can perform a very limited local recognition system, requiring users to be familiar with words the system can process. The purpose of this work is to diminish the complexity of Natural Language processing in the context of IoT. The solution posited in this article allows Internet of Things devices to offload Natural Language processing to a system that improves the use of Natural Language and alleviates the need to learn or remember specific words or terms intended for triggering device actions. We have evaluated the feasibility of the design with a proof-of-concept implemented in a home environment and it was tested by real users.
Díaz-Sánchez, Daniel; Simon-Sherratt, R.; Almenarez, Florina; Arias, Patricia; Marín, Andrés
Secure store and forward proxy for dynamic IoT applications over M2M networks Journal Article
In: IEEE Transactions on Consumer Electronics, vol. 62, iss. 4, pp. 389-397, 2016, ISSN: 0098-3063.
@article{7838091,
title = {Secure store and forward proxy for dynamic IoT applications over M2M networks},
author = {Daniel Díaz-Sánchez and R. Simon-Sherratt and Florina Almenarez and Patricia Arias and Andrés Marín},
url = {https://ieeexplore.ieee.org/document/7838091
https://phpmyadmin.pervasive.it.uc3m.es/download/Secure__Store_and_Forward_Proxy_for_Dynamic_IoT_Applications_over_M2M_Networks.pdf},
doi = {10.1109/TCE.2016.7838091},
issn = {0098-3063},
year = {2016},
date = {2016-11-01},
urldate = {2016-11-01},
journal = {IEEE Transactions on Consumer Electronics},
volume = {62},
issue = {4},
pages = {389-397},
abstract = {Internet of Things (IoT) applications are expected to generate a huge unforeseen amount of traffic flowing from Consumer Electronics devices to the network. In order to overcome existing interoperability problems, several standardization bodies have joined to bring a new generation of Machine to Machine (M2M) networks as a result of the evolution of wireless sensor/actor networks and mobile cellular networks to converged networks. M2M is expected to enable IoT paradigms and related concepts into a reality at a reasonable cost. As part of the convergence, several technologies preventing new IoT services to interfere with existing Internet services are flourishing. Responsive, message-driven, resilient and elastic architectures are becoming essential parts of the system. These architectures will control the entire data flow for an IoT system requiring sometimes to store, shape and forward data among nodes of a M2M network to improve network performance. However, IoT generated data have an important personal component since it is generated in personal devices or are the result of the observation of the physical world, so rises significant security concerns. This article proposes a novel opportunistic flexible secure store and forward proxy for M2M networks and its mapping to asynchronous protocols that guarantees data confidentiality.},
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Internet of Things (IoT) applications are expected to generate a huge unforeseen amount of traffic flowing from Consumer Electronics devices to the network. In order to overcome existing interoperability problems, several standardization bodies have joined to bring a new generation of Machine to Machine (M2M) networks as a result of the evolution of wireless sensor/actor networks and mobile cellular networks to converged networks. M2M is expected to enable IoT paradigms and related concepts into a reality at a reasonable cost. As part of the convergence, several technologies preventing new IoT services to interfere with existing Internet services are flourishing. Responsive, message-driven, resilient and elastic architectures are becoming essential parts of the system. These architectures will control the entire data flow for an IoT system requiring sometimes to store, shape and forward data among nodes of a M2M network to improve network performance. However, IoT generated data have an important personal component since it is generated in personal devices or are the result of the observation of the physical world, so rises significant security concerns. This article proposes a novel opportunistic flexible secure store and forward proxy for M2M networks and its mapping to asynchronous protocols that guarantees data confidentiality.
Arias-Cabarcos, Patricia; Marín, Andrés; Palacios, Diego; Almenárez, Florina; Díaz-Sánchez, Daniel
Comparing Password Management Software: Toward Usable and Secure Enterprise Authentication Journal Article
In: IT Professional, vol. 18, iss. 5, pp. 34-40, 2016, ISSN: 1941-045X.
@article{7579116,
title = {Comparing Password Management Software: Toward Usable and Secure Enterprise Authentication},
author = {Patricia Arias-Cabarcos and Andrés Marín and Diego Palacios and Florina Almenárez and Daniel Díaz-Sánchez},
url = {https://ieeexplore.ieee.org/document/7579116
https://doi.org/10.1109/MITP.2016.81
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abstract = {In today's corporate IT systems, employees routinely repeat an undeniable pattern: accessing a huge number of password-protected services. In this regard, although deploying a strong enterprise password policy can increase security against online breaches and data leaks, it also imposes a significant usability burden on users. To alleviate this problem, password managers (PMs) are considered user-friendly tools that automate password generation and login processes. But how secure and usable are these tools? The authors analyze the four most popular PMs with free versions from both security and usability perspectives. The comparison leads to recommendations on enterprise PM selection, as well as to the identification of new lines of research and development on usable authentication.},
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In today's corporate IT systems, employees routinely repeat an undeniable pattern: accessing a huge number of password-protected services. In this regard, although deploying a strong enterprise password policy can increase security against online breaches and data leaks, it also imposes a significant usability burden on users. To alleviate this problem, password managers (PMs) are considered user-friendly tools that automate password generation and login processes. But how secure and usable are these tools? The authors analyze the four most popular PMs with free versions from both security and usability perspectives. The comparison leads to recommendations on enterprise PM selection, as well as to the identification of new lines of research and development on usable authentication.
Marín-López, Andrés; Almenáres-Mendoza, Florina; Arias-Cabarcos, Patricia; Díaz-Sánchez, Daniel
Wi-Fi Direct: Lessons learned Proceedings Article
In: 2016 Mediterranean Ad Hoc Networking Workshop (Med-Hoc-Net), Institute of Electrical and Electronics Engineers (IEEE), 2016, ISBN: 978-1-5090-1984-7.
@inproceedings{pa002,
title = {Wi-Fi Direct: Lessons learned},
author = {Andrés Marín-López and Florina Almenáres-Mendoza and Patricia Arias-Cabarcos and Daniel Díaz-Sánchez},
url = {https://ieeexplore.ieee.org/document/7528493
https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7528493},
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date = {2016-08-04},
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booktitle = {2016 Mediterranean Ad Hoc Networking Workshop (Med-Hoc-Net)},
publisher = {Institute of Electrical and Electronics Engineers (IEEE)},
abstract = {Adhoc networking was initially designed for military application area. But adhoc networks have been found also appealing for autonomous computing. The adhoc mode of IEEE 802.11 (Independent Basic Service Set (IBSS) has not been successful due to several reasons. Within this article we explore and compare two alternatives for adhoc network formation in heterogeneous environments: Wi-Fi P2P also known as Wi-Fi Direct, and Wi-Fi Hotspot. The comparison shows that there are usability, security and performance reasons to favor Hotspot for application development.},
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Adhoc networking was initially designed for military application area. But adhoc networks have been found also appealing for autonomous computing. The adhoc mode of IEEE 802.11 (Independent Basic Service Set (IBSS) has not been successful due to several reasons. Within this article we explore and compare two alternatives for adhoc network formation in heterogeneous environments: Wi-Fi P2P also known as Wi-Fi Direct, and Wi-Fi Hotspot. The comparison shows that there are usability, security and performance reasons to favor Hotspot for application development.
Khaled, Omar; Marín, Andrés; Almenares, Florina; Arias, Patricia; Díaz, Daniel
Analysis of Secure TCP/IP Profile in 61850 Based Substation Automation System for Smart Grids Journal Article
In: International Journal of Distributed Sensor Networks, vol. 12, iss. 4, pp. 1-11, 2016, ISSN: 1550-1477.
@article{khaled001,
title = {Analysis of Secure TCP/IP Profile in 61850 Based Substation Automation System for Smart Grids},
author = {Omar Khaled and Andrés Marín and Florina Almenares and Patricia Arias and Daniel Díaz},
url = {https://journals.sagepub.com/doi/10.1155/2016/5793183},
doi = {https://doi.org/10.1155/2016/5793183},
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date = {2016-04-18},
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abstract = {Smart grid is the term used to describe modern power grids. It aims at achieving efficient, sustainable, economic, and secure delivery of electricity supplies. In order to achieve these goals, communication between different components within the grid and control centers is required. In a rapidly growing world, the demands for substation automation are increasing. Recently, two trends have been changing Substation Automation Systems: IEC 61850 and the need for cybersecurity. IEC 61850 specifies very strict performance requirements for message transfer time. The security for the smart grid must be designed to satisfy both performance and reliability requirements. In this paper, we address a study about secure communication in the substation real-time environment, complying with the IEC 61850 specifications. We mainly focus on analyzing the proposed Secure TCP/IP profile for MMS, testing different cipher suite combinations and examining whether by applying TLS we can still achieve the strict performance requirements of IEC 61850 or not. As a result of the study, we propose a list of cipher suite combinations that should be used. The importance of this study lies mainly on future scenarios, because IEC 61850 is thought to support smart metering communications.},
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Smart grid is the term used to describe modern power grids. It aims at achieving efficient, sustainable, economic, and secure delivery of electricity supplies. In order to achieve these goals, communication between different components within the grid and control centers is required. In a rapidly growing world, the demands for substation automation are increasing. Recently, two trends have been changing Substation Automation Systems: IEC 61850 and the need for cybersecurity. IEC 61850 specifies very strict performance requirements for message transfer time. The security for the smart grid must be designed to satisfy both performance and reliability requirements. In this paper, we address a study about secure communication in the substation real-time environment, complying with the IEC 61850 specifications. We mainly focus on analyzing the proposed Secure TCP/IP profile for MMS, testing different cipher suite combinations and examining whether by applying TLS we can still achieve the strict performance requirements of IEC 61850 or not. As a result of the study, we propose a list of cipher suite combinations that should be used. The importance of this study lies mainly on future scenarios, because IEC 61850 is thought to support smart metering communications.
Díaz-Sánchez, Daniel; Sherratt, Simon; Arias, Patricia; Almenares, Florina; Marín-López, Andrés
Proxy re-encryption schemes for IoT and crowd sensing Proceedings Article
In: IEEE, 2016, ISSN: 2158-4001.
@inproceedings{pa004,
title = {Proxy re-encryption schemes for IoT and crowd sensing},
author = {Daniel Díaz-Sánchez and Simon Sherratt and Patricia Arias and Florina Almenares and Andrés Marín-López},
url = {https://ieeexplore.ieee.org/document/7430505},
doi = {https://doi.org/10.1109/ICCE.2016.7430505},
issn = {2158-4001},
year = {2016},
date = {2016-04-01},
urldate = {2016-04-01},
publisher = {IEEE},
abstract = {IoT, crowd sensing and smart cities will be a traffic challenge. New communication paradigms as asynchronous messaging carry and forward, scheduled delivery and temporary storage will be needed to manage network resources dynamically. Since traditional end to end security will require keeping security associations among devices for a long time draining valuable resources, we propose and evaluate the use of proxy re-encryption protocols in these scenarios as a solution for reliable and flexible security.},
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IoT, crowd sensing and smart cities will be a traffic challenge. New communication paradigms as asynchronous messaging carry and forward, scheduled delivery and temporary storage will be needed to manage network resources dynamically. Since traditional end to end security will require keeping security associations among devices for a long time draining valuable resources, we propose and evaluate the use of proxy re-encryption protocols in these scenarios as a solution for reliable and flexible security.
Díaz-Sánchez, Daniel; Sherratt, Simon; Almenares, Florina; Arias, Patricia; López, Andrés Marín-
Distributed access control and privacy for the internet of me Proceedings Article
In: 2016 IEEE International Conference on Consumer Electronics (ICCE), IEEE, 2016, ISSN: 2158-4001.
@inproceedings{pa003,
title = {Distributed access control and privacy for the internet of me},
author = {Daniel Díaz-Sánchez and Simon Sherratt and Florina Almenares and Patricia Arias and Andrés Marín- López},
url = {https://ieeexplore.ieee.org/document/7430506},
doi = {10.1109/ICCE.2016.7430506},
issn = {2158-4001},
year = {2016},
date = {2016-03-14},
booktitle = {2016 IEEE International Conference on Consumer Electronics (ICCE)},
publisher = {IEEE},
abstract = {This article presents an experimental scalable message driven IoT and its security architecture based on Decentralized Information Flow Control. The system uses a gateway that exports SoA (REST) interfaces to the internet simplifying external applications whereas uses DIFC and asynchronous messaging within the home environment.},
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This article presents an experimental scalable message driven IoT and its security architecture based on Decentralized Information Flow Control. The system uses a gateway that exports SoA (REST) interfaces to the internet simplifying external applications whereas uses DIFC and asynchronous messaging within the home environment.
Almenarez, Florina; Hinarejos, M. Francisca; Marín, Andrés; Ferrer-Gomila, Josep Lluís; Sánchez, Daniel Díaz
PECEVA: An adaptable and energy-saving credential validation solution for pervasive networks Journal Article
In: INFORMATION SCIENCES, vol. 354, pp. 41-59, 2016, ISSN: 0020-0255.
@article{almenarez005,
title = {PECEVA: An adaptable and energy-saving credential validation solution for pervasive networks},
author = {Florina Almenarez and M. Francisca Hinarejos and Andrés Marín and Josep Lluís Ferrer-Gomila and Daniel Díaz Sánchez},
url = {https://www.sciencedirect.com/science/article/abs/pii/S0020025516301578?via%3Dihub},
doi = {https://doi.org/10.1016/j.ins.2016.03.010},
issn = {0020-0255},
year = {2016},
date = {2016-03-12},
urldate = {2016-03-12},
journal = {INFORMATION SCIENCES},
volume = {354},
pages = {41-59},
abstract = {Wireless, mobile, and context-awareness applications are considered to be the epitome of pervasive computing, but they bring with them the inherent security challenges of mobile ad-hoc networking. Mobile ad-hoc networks are mainly formed by mobile users, which can belong to different trust domains, in order to leverage the wealth of pervasive resources and available capabilities. The use of digital certificates is suitable for pervasive networking because of its decentralized and dynamic nature. Nevertheless, the validation of such certificates can become a more complex and costly process than it is in fixed-infrastructure networks. This is because pervasive networks face challenges such as environments that change with a certain degree of randomness, ad-hoc interactions with foreign devices, temporal disconnections that make it difficult to access updated and required information, and limited devices running costly processes. For these reasons, we propose a user-centric architecture that extends the validation of digital certificates in an adaptive way. The main contribution consists of a decision engine that takes advantage of the specific local and external resources in an opportunistic fashion. The solution preserves the security level required for each application and the resource consumption of the user device.
},
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Wireless, mobile, and context-awareness applications are considered to be the epitome of pervasive computing, but they bring with them the inherent security challenges of mobile ad-hoc networking. Mobile ad-hoc networks are mainly formed by mobile users, which can belong to different trust domains, in order to leverage the wealth of pervasive resources and available capabilities. The use of digital certificates is suitable for pervasive networking because of its decentralized and dynamic nature. Nevertheless, the validation of such certificates can become a more complex and costly process than it is in fixed-infrastructure networks. This is because pervasive networks face challenges such as environments that change with a certain degree of randomness, ad-hoc interactions with foreign devices, temporal disconnections that make it difficult to access updated and required information, and limited devices running costly processes. For these reasons, we propose a user-centric architecture that extends the validation of digital certificates in an adaptive way. The main contribution consists of a decision engine that takes advantage of the specific local and external resources in an opportunistic fashion. The solution preserves the security level required for each application and the resource consumption of the user device.
Diaz-Sánchez, Daniel; Sherratt, Simon; Arias, Patricia; Almenarez, Florina; Marín, Andrés
Enabling actor model for crowd sensing and IoT Proceedings Article
In: IEEE, 2015, ISSN: 0747-668X.
@inproceedings{pa006,
title = {Enabling actor model for crowd sensing and IoT},
author = {Daniel Diaz-Sánchez and Simon Sherratt and Patricia Arias and Florina Almenarez and Andrés Marín},
url = {https://ieeexplore.ieee.org/document/7177779},
doi = {https://doi.org/10.1109/ISCE.2015.7177779},
issn = {0747-668X},
year = {2015},
date = {2015-08-06},
urldate = {2015-08-06},
publisher = {IEEE},
abstract = {The cloud is playing a very important role in wireless sensor network, crowd sensing and IoT data collection and processing. However, current cloud solutions lack of some features that hamper the innovation a number of other new services. We propose a cloud solution that provides these missing features as multi-cloud and device multi-tenancy relying in a whole different fully distributed paradigm, the actor model.},
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The cloud is playing a very important role in wireless sensor network, crowd sensing and IoT data collection and processing. However, current cloud solutions lack of some features that hamper the innovation a number of other new services. We propose a cloud solution that provides these missing features as multi-cloud and device multi-tenancy relying in a whole different fully distributed paradigm, the actor model.
Rubio-Drosdov, Eugenio; Díaz-Sánchez, Daniel; Arias-Cabarcos, Patricia; Almenárez, Florina; Marín, Andrés
Towards a seamless human interaction in IoT Proceedings Article
In: IEEE, 2015, ISSN: 0747-668X.
@inproceedings{pa016,
title = {Towards a seamless human interaction in IoT},
author = {Eugenio Rubio-Drosdov and Daniel Díaz-Sánchez and Patricia Arias-Cabarcos and Florina Almenárez and Andrés Marín},
url = {https://ieeexplore.ieee.org/document/7177781},
doi = {https://doi.org/10.1109/ISCE.2015.7177781},
issn = {0747-668X},
year = {2015},
date = {2015-08-06},
urldate = {2015-08-06},
publisher = {IEEE},
abstract = {This article describes our approach for facilitating the interaction among devices in IoT environments. Our solution provides mechanisms to complement current IoT ontologies with device language annotations to facilitate device communication. This is our first step towards comprehensive user to environment communication that would bring the Internet of Me concept.},
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This article describes our approach for facilitating the interaction among devices in IoT environments. Our solution provides mechanisms to complement current IoT ontologies with device language annotations to facilitate device communication. This is our first step towards comprehensive user to environment communication that would bring the Internet of Me concept.
Arias-Cabarcos, Patricia; Almenárez, Florina; Trapero, Rubén; Díaz-Sánchez, Daniel; Marín, Andrés
Blended Identity: Pervasive IdM for Continuous Authentication Journal Article
In: IEEE Xplore, vol. 13, iss. 3, pp. 32-39, 2015, ISSN: 1540-7993.
@article{ariascabarcos002,
title = {Blended Identity: Pervasive IdM for Continuous Authentication},
author = {Patricia Arias-Cabarcos and Florina Almenárez and Rubén Trapero and Daniel Díaz-Sánchez and Andrés Marín},
url = {https://ieeexplore.ieee.org/document/7118079},
doi = {https://doi.org/10.1109/MSP.2015.62},
issn = {1540-7993},
year = {2015},
date = {2015-06-04},
urldate = {2015-06-04},
journal = {IEEE Xplore},
volume = {13},
issue = {3},
pages = {32-39},
abstract = {A proper identity management approach is necessary for pervasive computing to be invisible to users. Federated identity management is key to achieving efficient identity blending and natural integration in the physical and online layers where users, devices, and services are present.},
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A proper identity management approach is necessary for pervasive computing to be invisible to users. Federated identity management is key to achieving efficient identity blending and natural integration in the physical and online layers where users, devices, and services are present.
Díaz-Sanchez, Daniel; Arias-Cabarcos, Patricia; Almenarez, Florina; Marín-López, Andrés
P2P-based data layer for mobile Media Cloud Proceedings Article
In: IEEE, 2015, ISSN: 2158-3994.
@inproceedings{pa005,
title = {P2P-based data layer for mobile Media Cloud},
author = {Daniel Díaz-Sanchez and Patricia Arias-Cabarcos and Florina Almenarez and Andrés Marín-López},
url = {https://ieeexplore.ieee.org/document/7066362},
doi = {https://doi.org/10.1109/ICCE.2015.7066362},
issn = {2158-3994},
year = {2015},
date = {2015-03-26},
urldate = {2015-03-26},
publisher = {IEEE},
abstract = {This paper focus in an emerging concept called Elastic Personal Computing that is the ability to distribute data processing among multiple personal devices that constitute a mobile cloud. Among the most complex challenges is to provide data layer for the system to exchange input data transparently among nodes considering the data partitioning is application specific. Implementing data layers with replication and load distribution strategies is not feasible due to mobility, intermittent availability and the distributed character of mobile cloud systems. This article reasons about the problem and presents a P2P based data layer for distributed computing using personal devices.},
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This paper focus in an emerging concept called Elastic Personal Computing that is the ability to distribute data processing among multiple personal devices that constitute a mobile cloud. Among the most complex challenges is to provide data layer for the system to exchange input data transparently among nodes considering the data partitioning is application specific. Implementing data layers with replication and load distribution strategies is not feasible due to mobility, intermittent availability and the distributed character of mobile cloud systems. This article reasons about the problem and presents a P2P based data layer for distributed computing using personal devices.
Díaz-Sanchez, Daniel; Arias-Cabarcos, Patricia; Sánchez-Guerrero, Rosa; Almenarez, Florina; Marín-Lopez, Andrés
Elastic participatory sensing systems enabling cooperative meta sensors with consumer devices Proceedings Article
In: 2014 IEEE International Conference on Consumer Electronics (ICCE), IEEE, 2014, ISSN: 2158-3994.
@inproceedings{pa007,
title = {Elastic participatory sensing systems enabling cooperative meta sensors with consumer devices},
author = {Daniel Díaz-Sanchez and Patricia Arias-Cabarcos and Rosa Sánchez-Guerrero and Florina Almenarez and Andrés Marín-Lopez},
url = {https://ieeexplore.ieee.org/document/6776058},
doi = {https://doi.org/10.1109/ICCE.2014.6776058},
issn = {2158-3994},
year = {2014},
date = {2014-03-20},
booktitle = {2014 IEEE International Conference on Consumer Electronics (ICCE)},
publisher = {IEEE},
abstract = {Participatory Sensing systems can take benefit of the distributed processing personal consumer devices can provide since sensors can be grouped in meta-sensors and measures can be processed in a distributed fashion saving costs and improving the coverage. This abstract presents a solution introducing the concept of personal meta-sensor and provides a lightweight framework to consume and process measures.},
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Participatory Sensing systems can take benefit of the distributed processing personal consumer devices can provide since sensors can be grouped in meta-sensors and measures can be processed in a distributed fashion saving costs and improving the coverage. This abstract presents a solution introducing the concept of personal meta-sensor and provides a lightweight framework to consume and process measures.
Díaz-Sánchez, Daniel; Almenarez, Florina; Marín, Andrés; Sánchez-Guerrero, Rosa; Arias, Patricia
Media Gateway: bringing privacy to Private Multimedia Clouds connections Journal Article
In: Telecommunication Systems, vol. 55, iss. 2, pp. 315-330, 2014, ISSN: 1572-9451.
@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.},
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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.
Arias-Cabarcos, Patricia; Almenares-Mendoza, Florina; Gómez-Mármol, Felix; López, Andrés Marín-
To Federate or Not To Federate: A Reputation-Based Mechanism to Dynamize Cooperation in Identity Management Journal Article
In: Wireless Personal Communications, vol. 75, iss. 3, pp. 1769-1786, 2013, ISSN: 0929-6212.
@article{almenarez010,
title = {To Federate or Not To Federate: A Reputation-Based Mechanism to Dynamize Cooperation in Identity Management },
author = {Patricia Arias-Cabarcos and Florina Almenares-Mendoza and Felix Gómez-Mármol and Andrés Marín- López },
doi = {https://doi.org/10.1007/s11277-013-1338-y},
issn = {0929-6212},
year = {2013},
date = {2013-08-01},
urldate = {2013-08-01},
journal = {Wireless Personal Communications},
volume = {75},
issue = {3},
pages = {1769-1786},
abstract = {Identity Management systems cannot be centralized anymore. Nowadays, users have multiple accounts, profiles and personal data distributed throughout the web and hosted by different providers. However, the online world is currently divided into identity silos forcing users to deal with repetitive authentication and registration processes and hindering a faster development of large scale e-business. Federation has been proposed as a technology to bridge different trust domains, allowing user identity information to be shared in order to improve usability. But further research is required to shift from the current static model, where manual bilateral agreements must be pre-configured to enable cooperation between unknown parties, to a more dynamic one, where trust relationships are established on demand in a fully automated fashion. This paper presents IdMRep, the first completely decentralized reputation-based mechanism which makes dynamic federation a reality. Initial experiments demonstrate its accuracy as well as an assumable overhead in scenarios with and without malicious nodes.},
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Identity Management systems cannot be centralized anymore. Nowadays, users have multiple accounts, profiles and personal data distributed throughout the web and hosted by different providers. However, the online world is currently divided into identity silos forcing users to deal with repetitive authentication and registration processes and hindering a faster development of large scale e-business. Federation has been proposed as a technology to bridge different trust domains, allowing user identity information to be shared in order to improve usability. But further research is required to shift from the current static model, where manual bilateral agreements must be pre-configured to enable cooperation between unknown parties, to a more dynamic one, where trust relationships are established on demand in a fully automated fashion. This paper presents IdMRep, the first completely decentralized reputation-based mechanism which makes dynamic federation a reality. Initial experiments demonstrate its accuracy as well as an assumable overhead in scenarios with and without malicious nodes.
Almenares, Florina; Arias, Patricia; Marín, Andrés; Díaz-Sánchez, Daniel; Sánchez, Rosa
Overhead of using Secure Wireless Communications in Mobile Computing Journal Article
In: IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, vol. 59, iss. 2, pp. 335-342, 2013, ISSN: 0098-3063.
@article{almenarez004,
title = {Overhead of using Secure Wireless Communications in Mobile Computing},
author = {Florina Almenares and Patricia Arias and Andrés Marín and Daniel Díaz-Sánchez and Rosa Sánchez
},
url = {https://ieeexplore.ieee.org/document/6531115
https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6531115},
doi = {https://doi.org/10.1109/TCE.2013.6531115},
issn = {0098-3063},
year = {2013},
date = {2013-05-06},
urldate = {2013-05-06},
journal = {IEEE TRANSACTIONS ON CONSUMER ELECTRONICS},
volume = {59},
issue = {2},
pages = {335-342},
abstract = {Secure wireless communications are fundamental in any interaction in order to avoid security and privacy breaches, especially from mobile devices. The use of this kind of communications is far more frequent and the number of users increases day after day. This paper shows and analyzes the support, performance and consumption of cryptographic algorithms and cipher suites in terms of time and energy when secure communications (i.e., using SSL) are established according to different security levels. This study has been performed in distinct operating systems, and using different browsers and libraries.},
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Secure wireless communications are fundamental in any interaction in order to avoid security and privacy breaches, especially from mobile devices. The use of this kind of communications is far more frequent and the number of users increases day after day. This paper shows and analyzes the support, performance and consumption of cryptographic algorithms and cipher suites in terms of time and energy when secure communications (i.e., using SSL) are established according to different security levels. This study has been performed in distinct operating systems, and using different browsers and libraries.
Díaz-Sánchez, Daniel; Marín-López, Andres; Almenares, Florina; Sánchez, Rosa; Arias, Patricia
Flexible Computing for personal electronic devices Proceedings Article
In: 2013 IEEE International Conference on Consumer Electronics (ICCE), IEEE, 2013, ISSN: 2158-3994.
@inproceedings{pa008,
title = {Flexible Computing for personal electronic devices},
author = {Daniel Díaz-Sánchez and Andres Marín-López and Florina Almenares and Rosa Sánchez and Patricia Arias},
url = {https://ieeexplore.ieee.org/document/6486863},
doi = {https://doi.org/10.1109/ICCE.2013.6486863},
issn = {2158-3994},
year = {2013},
date = {2013-03-28},
booktitle = {2013 IEEE International Conference on Consumer Electronics (ICCE)},
publisher = {IEEE},
abstract = {This article describes an experimental framework for Android called Light Weight Map Reduce that pursues enabling Elastic Personal Computing, a refinement of the Elastic Computing concept that allows personal electronics to automatically distribute the load among devices constituting a computing fabric seamlessly.},
keywords = {},
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This article describes an experimental framework for Android called Light Weight Map Reduce that pursues enabling Elastic Personal Computing, a refinement of the Elastic Computing concept that allows personal electronics to automatically distribute the load among devices constituting a computing fabric seamlessly.
Almenares, Florina; Arias, Patricia; Marín-López, Andrés; Díaz-Sánchez, Daniel; Sánchez, Rosa
How costly are secure transactions on handheld devices? Proceedings Article
In: IEEE, 2013, ISSN: 2158-3994.
@inproceedings{pa010,
title = {How costly are secure transactions on handheld devices?},
author = {Florina Almenares and Patricia Arias and Andrés Marín-López and Daniel Díaz-Sánchez and Rosa Sánchez},
url = {https://ieeexplore.ieee.org/document/6486865},
doi = {https://doi.org/10.1109/ICCE.2013.6486865},
issn = {2158-3994},
year = {2013},
date = {2013-03-08},
publisher = {IEEE},
abstract = {Handheld devices are more and more powerful allowing to do most things people do on a desktop. Nevertheless, mobile device security follows being an open issue. We have performed the first study of the security support between native and OpenSSL-based libraries, in terms of energy consumption and time, about secure communication performance.},
keywords = {},
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Handheld devices are more and more powerful allowing to do most things people do on a desktop. Nevertheless, mobile device security follows being an open issue. We have performed the first study of the security support between native and OpenSSL-based libraries, in terms of energy consumption and time, about secure communication performance.
Díaz-Sánchez, Daniel; Marín-López, Andrés; Almenarez, Florina; Sánchez-Guerrero, Rosa; Arias, Patricia
A distributed transcoding system for mobile video delivery Proceedings Article
In: Institute of Electrical and Electronics Engineers (IEEE), 2013, ISBN: 978-1-4673-2993-4.
@inproceedings{pa019,
title = {A distributed transcoding system for mobile video delivery},
author = {Daniel Díaz-Sánchez and Andrés Marín-López and Florina Almenarez and Rosa Sánchez-Guerrero and Patricia Arias},
url = {https://ieeexplore.ieee.org/document/6416151},
doi = {https://doi.org/10.1109/WMNC.2012.6416151},
isbn = {978-1-4673-2993-4},
year = {2013},
date = {2013-01-24},
publisher = {Institute of Electrical and Electronics Engineers (IEEE)},
abstract = {The heterogeneity of client devices is increasing leading to different resolutions, qualities and form factors. Due to the amount of multimedia to be processed, transcoding and protection can be no longer performed linearly. For that reason, this article describes a solution to distribute and parallelize the transcoding process as well as the content encryption relying on cloud computing. Moreover, this article shows the benefits of this approach showing several experimental results.},
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The heterogeneity of client devices is increasing leading to different resolutions, qualities and form factors. Due to the amount of multimedia to be processed, transcoding and protection can be no longer performed linearly. For that reason, this article describes a solution to distribute and parallelize the transcoding process as well as the content encryption relying on cloud computing. Moreover, this article shows the benefits of this approach showing several experimental results.
Arias-Cabarcos, Patricia; Almenárez-Mendoza, Florina; Sánchez-Guerrero, Rosa; Marín-López, Andrés; Díaz-Sánchez, Daniel
SuSSo: Seamless and Ubiquitous Single Sign-on for Cloud Service Continuity across devices Journal Article
In: IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, vol. 58, iss. 4, pp. 1425-1433, 2012, ISSN: 0098-3063.
@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 = {},
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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.
Marín-López, Andrés; Díaz-Sánchez, Daniel; Almenárez-Mendoza, Florina; Arias-Cabarcos, Patricia; Sánchez-Guerrero, Rosa; Sanvido, Fabio
Private cloud and media privacy in social networks Proceedings Article
In: 2012 IEEE Second International Conference on Consumer Electronics - Berlin (ICCE-Berlin), IEEE, 2012, ISSN: 2166-6814.
@inproceedings{pa011,
title = {Private cloud and media privacy in social networks},
author = {Andrés Marín-López and Daniel Díaz-Sánchez and Florina Almenárez-Mendoza and Patricia Arias-Cabarcos and Rosa Sánchez-Guerrero and Fabio Sanvido},
url = {https://ieeexplore.ieee.org/document/6336476},
doi = {https://doi.org/10.1109/ICCE-Berlin.2012.6336476},
issn = {2166-6814},
year = {2012},
date = {2012-10-22},
booktitle = {2012 IEEE Second International Conference on Consumer Electronics - Berlin (ICCE-Berlin)},
publisher = {IEEE},
abstract = {Privacy rules imposed by social networks (SNs) impose several restrictions to user privacy. Though they usually offer the user some control to limit access to his own data, the social network may share uploaded data with other partners and marketing companies. Pictures and videos may have a second life, even after being deleted by the user, and consequently storage and access must take place in the user home domain or facilities managed by the user, following an end to end approach. We propose to combine the usage of private clouds, specialized in media contents, in cooperation with SNs, offering the user complete control over his data, while benefiting from the SNs visibility to announce and spread the data. To achieve transparency, we propose a plug-in system to embed links as annotations in reduced media replacement uploaded in the SN. These links point to the real resource stored in the private cloud, now under complete user control. We perform validation tests which show important improvements in uploading time and user experience.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Privacy rules imposed by social networks (SNs) impose several restrictions to user privacy. Though they usually offer the user some control to limit access to his own data, the social network may share uploaded data with other partners and marketing companies. Pictures and videos may have a second life, even after being deleted by the user, and consequently storage and access must take place in the user home domain or facilities managed by the user, following an end to end approach. We propose to combine the usage of private clouds, specialized in media contents, in cooperation with SNs, offering the user complete control over his data, while benefiting from the SNs visibility to announce and spread the data. To achieve transparency, we propose a plug-in system to embed links as annotations in reduced media replacement uploaded in the SN. These links point to the real resource stored in the private cloud, now under complete user control. We perform validation tests which show important improvements in uploading time and user experience.
Arias-Cabarcos, Patricia; Almenárez-Mendoza, Florina; Marín-López, Andrés; Díaz-Sánchez, Daniel; Sánchez-Guerrero, Rosa
A Metric-Based Approach to Assess Risk for "On Cloud" Federated Identity Management Journal Article
In: Journal of Network and Systems Management, vol. 20, iss. 4, pp. 513-533, 2012, ISSN: 1573-7705.
@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.
},
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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.
Sánchez-Guerrero, Rosa; Almenárez, Florina; Díaz-Sánchez, Daniel; Marín, Andrés; Arias, Patricia; Sanvido, Fabio
An Event Driven Hybrid Identity Management Approach to Privacy Enhanced e-Health Journal Article
In: Sensors , vol. 12, iss. 5, pp. 6129-6154, 2012, ISSN: 1424-8220.
@article{sanchezguerrero001,
title = {An Event Driven Hybrid Identity Management Approach to Privacy Enhanced e-Health},
author = {Rosa Sánchez-Guerrero and Florina Almenárez and Daniel Díaz-Sánchez and Andrés Marín and Patricia Arias and Fabio Sanvido
},
url = {https://www.mdpi.com/1424-8220/12/5/6129
https://www.mdpi.com/1424-8220/12/5/6129/pdf?version=1403317529},
doi = {https://doi.org/10.3390/s120506129},
issn = {1424-8220},
year = {2012},
date = {2012-05-10},
urldate = {2012-05-10},
journal = {Sensors },
volume = {12},
issue = {5},
pages = {6129-6154},
abstract = {Credential-based authorization offers interesting advantages for ubiquitous scenarios involving limited devices such as sensors and personal mobile equipment: the verification can be done locally; it offers a more reduced computational cost than its competitors for issuing, storing, and verification; and it naturally supports rights delegation. The main drawback is the revocation of rights. Revocation requires handling potentially large revocation lists, or using protocols to check the revocation status, bringing extra communication costs not acceptable for sensors and other limited devices. Moreover, the effective revocation consent—considered as a privacy rule in sensitive scenarios—has not been fully addressed. This paper proposes an event-based mechanism empowering a new concept, the sleepyhead credentials, which allows to substitute time constraints and explicit revocation by activating and deactivating authorization rights according to events. Our approach is to integrate this concept in IdM systems in a hybrid model supporting delegation, which can be an interesting alternative for scenarios where revocation of consent and user privacy are critical. The delegation includes a SAML compliant protocol, which we have validated through a proof-of-concept implementation. This article also explains the mathematical model describing the event-based model and offers estimations of the overhead introduced by the system. The paper focus on health care scenarios, where we show the flexibility of the proposed event-based user consent revocation mechanism.},
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Credential-based authorization offers interesting advantages for ubiquitous scenarios involving limited devices such as sensors and personal mobile equipment: the verification can be done locally; it offers a more reduced computational cost than its competitors for issuing, storing, and verification; and it naturally supports rights delegation. The main drawback is the revocation of rights. Revocation requires handling potentially large revocation lists, or using protocols to check the revocation status, bringing extra communication costs not acceptable for sensors and other limited devices. Moreover, the effective revocation consent—considered as a privacy rule in sensitive scenarios—has not been fully addressed. This paper proposes an event-based mechanism empowering a new concept, the sleepyhead credentials, which allows to substitute time constraints and explicit revocation by activating and deactivating authorization rights according to events. Our approach is to integrate this concept in IdM systems in a hybrid model supporting delegation, which can be an interesting alternative for scenarios where revocation of consent and user privacy are critical. The delegation includes a SAML compliant protocol, which we have validated through a proof-of-concept implementation. This article also explains the mathematical model describing the event-based model and offers estimations of the overhead introduced by the system. The paper focus on health care scenarios, where we show the flexibility of the proposed event-based user consent revocation mechanism.
Arias-Cabarcos, Patricia; Almenares, Florina; Sánchez-Guerrero, Rosa; Marin, Andrés; Díaz-Sánchez, Daniel
Multi-device Single Sign-on for cloud service continuity Proceedings Article
In: 2012 IEEE International Conference on Consumer Electronics (ICCE), Institute of Electrical and Electronics Engineers (IEEE), 2012, ISSN: 2158-3994.
@inproceedings{pa018,
title = {Multi-device Single Sign-on for cloud service continuity},
author = {Patricia Arias-Cabarcos and Florina Almenares and Rosa Sánchez-Guerrero and Andrés Marin and Daniel Díaz-Sánchez},
url = {https://ieeexplore.ieee.org/document/6162011},
doi = {https://doi.org/10.1109/ICCE.2012.6162011},
issn = {2158-3994},
year = {2012},
date = {2012-03-01},
booktitle = {2012 IEEE International Conference on Consumer Electronics (ICCE)},
publisher = {Institute of Electrical and Electronics Engineers (IEEE)},
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 a novel middleware architecture that allows security sessions initiated from one device to be seamlessly transferred to a second one, as might be desirable in the enjoyment of long running media.},
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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 a novel middleware architecture that allows security sessions initiated from one device to be seamlessly transferred to a second one, as might be desirable in the enjoyment of long running media.
Sánchez, Rosa; Almenares, Florina; Arias, Patricia; Díaz-Sánchez, Daniel; Marín, Andrés
Enhancing privacy and dynamic federation in IdM for consumer cloud computing Journal Article
In: IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, vol. 58, iss. 1, pp. 95-103, 2012, ISSN: 0098-3063.
@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 = {},
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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.
Sánchez-Guerrero, Rosa; Díaz-Sánchez, Daniel; Marín-López, Andrés; Arias-Cabarcos, Patricia; Almenares-Mendoza, Florina
Improving privacy in identity management systems for health care scenarios Proceedings Article
In: Proceedings of the 5th International Symposium of Ubiquitous Computing and Ambient Intelligence (UCAMI 2011), December 5-8th, 2011, Riviera Maya, Mexico, UCAMI, 2011, ISBN: 978-84-694-9677-0.
@inproceedings{pa033,
title = {Improving privacy in identity management systems for health care scenarios},
author = {Rosa Sánchez-Guerrero and Daniel Díaz-Sánchez and Andrés Marín-López and Patricia Arias-Cabarcos and Florina Almenares-Mendoza},
url = {http://hdl.handle.net/10016/13102},
isbn = {978-84-694-9677-0},
year = {2011},
date = {2011-12-27},
urldate = {2011-12-27},
booktitle = {Proceedings of the 5th International Symposium of Ubiquitous Computing and Ambient Intelligence (UCAMI 2011), December 5-8th, 2011, Riviera Maya, Mexico},
publisher = {UCAMI},
abstract = {Privacy is a very complex and subjective concept with different meaning to different people. The meaning depends on the context. Moreover, privacy is close to the user information and thus, present in any ubiquitous computing scenario. In the context of identity management (IdM), privacy is gaining more importance since IdM systems deal with services that requires sharing attributes belonging to users’ identity with different entities across domains. Consequently, privacy is a fundamental aspect to be addressed by IdM to protect the exchange of user attributes between services and identity providers across different networks and security domains in pervasive computing. However, problems such as the effective revocation consent, have not been fully addressed. Furthermore, privacy depends heavily on users and applications requiring some degree of flexibility. This paper analyzes the main current identity models, as well as the privacy support presented by the identity management frameworks. After the main limitations are identified, we propose a delegation protocol for the SAML standard in order to enhance the revocation consent within healthcare scenarios.},
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Privacy is a very complex and subjective concept with different meaning to different people. The meaning depends on the context. Moreover, privacy is close to the user information and thus, present in any ubiquitous computing scenario. In the context of identity management (IdM), privacy is gaining more importance since IdM systems deal with services that requires sharing attributes belonging to users’ identity with different entities across domains. Consequently, privacy is a fundamental aspect to be addressed by IdM to protect the exchange of user attributes between services and identity providers across different networks and security domains in pervasive computing. However, problems such as the effective revocation consent, have not been fully addressed. Furthermore, privacy depends heavily on users and applications requiring some degree of flexibility. This paper analyzes the main current identity models, as well as the privacy support presented by the identity management frameworks. After the main limitations are identified, we propose a delegation protocol for the SAML standard in order to enhance the revocation consent within healthcare scenarios.
Sánchez-Guerrero, Rosa; Díaz-Sánchez, Daniel; Almenares-Mendoza, Florina; López, Andrés Marín-; Arias-Cabarcos, Patricia; Proserpio, Davide
An identity aware wimax personalization for pervasive computing services Proceedings Article
In: Proceedings of the 5th International Symposium of Ubiquitous Computing and Ambient Intelligence (UCAMI 2011), December 5-9th, 2011, Riviera Maya, Mexico., UCAMI, 2011, ISBN: 978-84-694-9677-0.
@inproceedings{pa034,
title = {An identity aware wimax personalization for pervasive computing services},
author = {Rosa Sánchez-Guerrero and Daniel Díaz-Sánchez and Florina Almenares-Mendoza and Andrés Marín- López and Patricia Arias-Cabarcos and Davide Proserpio },
url = {http://hdl.handle.net/10016/13098
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isbn = {978-84-694-9677-0},
year = {2011},
date = {2011-12-27},
urldate = {2011-12-27},
booktitle = {Proceedings of the 5th International Symposium of Ubiquitous Computing and Ambient Intelligence (UCAMI 2011), December 5-9th, 2011, Riviera Maya, Mexico.},
publisher = {UCAMI},
abstract = {Mobile Internet access is becoming more and more pervasive in the new 4G scenarios, where WiMAX is to play a crucial role. WiMax has advantages when considering both energy consumption and bandwidth, when compared with HSDPA and LTE. However, we have found some limitations in IEEE 802.16 security support, which may limit authentication and authorization mechanisms for ubiquitous service development. In this article we analyze weaknesses and vulnerabilities we have found in WiMAX security. WiMax, with the adequate identity management support, could be invaluable for developing new pervasive computing services. We propose the introduction of identity management in WiMAX, as a pervious step to the definition of identity aware WiMax personalization of pervasive computing services.},
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Mobile Internet access is becoming more and more pervasive in the new 4G scenarios, where WiMAX is to play a crucial role. WiMax has advantages when considering both energy consumption and bandwidth, when compared with HSDPA and LTE. However, we have found some limitations in IEEE 802.16 security support, which may limit authentication and authorization mechanisms for ubiquitous service development. In this article we analyze weaknesses and vulnerabilities we have found in WiMAX security. WiMax, with the adequate identity management support, could be invaluable for developing new pervasive computing services. We propose the introduction of identity management in WiMAX, as a pervious step to the definition of identity aware WiMax personalization of pervasive computing services.
Sanvido, Fabio; Díaz-Sánchez, Daniel; Almenárez-Mendoza, Florina; Marín-López, Andrés
Dynamic Negotiation Layer for Secure Semantic Service Oriented Architectures Proceedings Article
In: UBICOMM 2011 : The Fifth International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies, pp. 165 - 168, 2011, ISBN: 978-1-61208-171-7 .
@inproceedings{pa021,
title = {Dynamic Negotiation Layer for Secure Semantic Service Oriented Architectures},
author = {Fabio Sanvido and Daniel Díaz-Sánchez and Florina Almenárez-Mendoza and Andrés Marín-López
},
url = {https://d1wqtxts1xzle7.cloudfront.net/83301598/download_full-libre.pdf?1649227962=&response-content-disposition=inline%3B+filename%3D2011_Technical_Program_Committee_PECES_2.pdf&Expires=1712232629&Signature=VNZB3mTjl0twRnbwVDjheAym0V2F-5MxmOZn9hlYyDBFGrPQ6xahSqA~DoWxky9SL5qicmVX2u9cpKqLmk39IRcwzDt7QW4kIBlJrOHMHHU1XzQxcz6e-1jFvsHPLexu6T-vxyEWvcDR-9iFKKU1LzJdoNxCm09EpG5JQB0TAQGqCI5HYnLSXdYGQHSJhTse1og0Ap2cN7nZcKakGIUfky5dytM24gegfmiZv2hoegIxrx2V~KY0WnfCx1RqcNQ~wtiS8VnG4w5ha7YrNl7HEpwVn9ut~dINxDp81uBEK-eaRpXm0cyWkq9vd2N0l2Y4zp~WWFtl5HrIzPciziTW6A__&Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA#page=178},
isbn = {978-1-61208-171-7 },
year = {2011},
date = {2011-12-12},
booktitle = {UBICOMM 2011 : The Fifth International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies},
pages = {165 - 168},
abstract = {The approach of users connected anytime, anywhere, has led to merging isolated islands of enriched services environments into the WEB, leaving the user free to choose among an huge number of services. In this context the introduction of ontologies and the creation of semantic Web services mainly focus on using reasoners and planning algorithms to achieve automation in basic processes as discovery, composition and invocation. Nevertheless, there is a problem in standardizing one unique ontology that rises in alignment issues between the domain-specific ontologies on which semantic web service description language eventually rely. Moreover, there is no standardized processes that properly face privacy problem when participants require a graduate disclosure of domain sensitive information. We argue in this paper that a negotiation layer that could connect service consumer and service provider is necessary in order to overcome such limitations. The use of SAML as transverse security language is proposed.},
keywords = {},
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The approach of users connected anytime, anywhere, has led to merging isolated islands of enriched services environments into the WEB, leaving the user free to choose among an huge number of services. In this context the introduction of ontologies and the creation of semantic Web services mainly focus on using reasoners and planning algorithms to achieve automation in basic processes as discovery, composition and invocation. Nevertheless, there is a problem in standardizing one unique ontology that rises in alignment issues between the domain-specific ontologies on which semantic web service description language eventually rely. Moreover, there is no standardized processes that properly face privacy problem when participants require a graduate disclosure of domain sensitive information. We argue in this paper that a negotiation layer that could connect service consumer and service provider is necessary in order to overcome such limitations. The use of SAML as transverse security language is proposed.
Sánchez-Guerrero, Rosa; Díaz-Sánchez, Daniel; Almenarez, Florina; Arias, Patricia; Proserpio, Davide; Marín, Andrés
Introducing identity management in WiMAX to enable secure and personalized services Proceedings Article
In: 2011 4th Joint IFIP Wireless and Mobile Networking Conference (WMNC 2011), Institute of Electrical and Electronics Engineers (IEEE), 2011, ISBN: 978-1-4577-1192-3.
@inproceedings{pa022,
title = {Introducing identity management in WiMAX to enable secure and personalized services},
author = {Rosa Sánchez-Guerrero and Daniel Díaz-Sánchez and Florina Almenarez and Patricia Arias and Davide Proserpio and Andrés Marín},
url = {https://ieeexplore.ieee.org/document/6097228},
doi = {https://doi.org/10.1109/WMNC.2011.6097228},
isbn = {978-1-4577-1192-3},
year = {2011},
date = {2011-12-12},
urldate = {2011-12-12},
booktitle = {2011 4th Joint IFIP Wireless and Mobile Networking Conference (WMNC 2011)},
publisher = {Institute of Electrical and Electronics Engineers (IEEE)},
abstract = {The increasing popularity of broadband Internet and the widespread penetration of full-featured mobile devices have signaled WiMAX importance. IEEE 802.16 standard has focused on security from the beginning, being security support a fundamental aspect in wireless communication. We have found some limitations concerning authentication and authorization mechanisms at user level. To overcome those limitations we consider necessary to provide a proper identity management support for WiMAX for enhancing users' experience whereas delivering services in a secure fashion. In this article we analyze several weaknesses and vulnerabilities in WiMAX security and propose the introduction of identity management in WiMAX for a better provision of secure personalized services.},
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The increasing popularity of broadband Internet and the widespread penetration of full-featured mobile devices have signaled WiMAX importance. IEEE 802.16 standard has focused on security from the beginning, being security support a fundamental aspect in wireless communication. We have found some limitations concerning authentication and authorization mechanisms at user level. To overcome those limitations we consider necessary to provide a proper identity management support for WiMAX for enhancing users' experience whereas delivering services in a secure fashion. In this article we analyze several weaknesses and vulnerabilities in WiMAX security and propose the introduction of identity management in WiMAX for a better provision of secure personalized services.
Díaz-Sánchez, Daniel; Almenarez, Florina; Marín, Andrés; Arias, Patricia; Sánchez-Guerrero, Rosa; Sanvido, Fabio
A privacy aware media gateway for connecting private multimedia clouds to limited devices Proceedings Article
In: 2011 4th Joint IFIP Wireless and Mobile Networking Conference (WMNC 2011), Institute of Electrical and Electronics Engineers (IEEE), 2011, ISBN: 978-1-4577-1192-3.
@inproceedings{pa023,
title = {A privacy aware media gateway for connecting private multimedia clouds to limited devices},
author = {Daniel Díaz-Sánchez and Florina Almenarez and Andrés Marín and Patricia Arias and Rosa Sánchez-Guerrero and Fabio Sanvido},
url = {https://ieeexplore.ieee.org/document/6097259},
doi = {https://doi.org/10.1109/WMNC.2011.6097259},
isbn = {978-1-4577-1192-3},
year = {2011},
date = {2011-12-12},
urldate = {2011-12-12},
booktitle = {2011 4th Joint IFIP Wireless and Mobile Networking Conference (WMNC 2011)},
publisher = {Institute of Electrical and Electronics Engineers (IEEE)},
abstract = {Multimedia availability is exceeding our capacity of management in home environment and outside it. For that reason, solutions as Media Cloud have brought the concept of Cloud Computing to home environments. Media Cloud provides a comprehensive and efficient solution for managing content among federated home environments. However, when consuming those contents outside a home environment some problems should be addressed as dealing with limited devices and protecting user generated and commercial contents from eavesdroppers. 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 = {},
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Multimedia availability is exceeding our capacity of management in home environment and outside it. For that reason, solutions as Media Cloud have brought the concept of Cloud Computing to home environments. Media Cloud provides a comprehensive and efficient solution for managing content among federated home environments. However, when consuming those contents outside a home environment some problems should be addressed as dealing with limited devices and protecting user generated and commercial contents from eavesdroppers. 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.
Marin, Andres; Díaz-Sánchez, Daniel; Almenárez-Mendoza, Florina; Arias-Cabarcos, Patricia; Sánchez-Guerrero, Rosa; Sanvido, Fabio
Consumer electronics for social video services Proceedings Article
In: 2011 IEEE International Conference on Consumer Electronics -Berlin (ICCE-Berlin), Institute of Electrical and Electronics Engineers (IEEE), 2011, ISSN: 2166-6814.
@inproceedings{pa027,
title = {Consumer electronics for social video services},
author = {Andres Marin and Daniel Díaz-Sánchez and Florina Almenárez-Mendoza and Patricia Arias-Cabarcos and Rosa Sánchez-Guerrero and Fabio Sanvido
},
url = {https://ieeexplore.ieee.org/document/6031884},
doi = {https://doi.org/10.1109/ICCE-Berlin.2011.6031884},
issn = {2166-6814},
year = {2011},
date = {2011-09-29},
booktitle = {2011 IEEE International Conference on Consumer Electronics -Berlin (ICCE-Berlin)},
publisher = {Institute of Electrical and Electronics Engineers (IEEE)},
abstract = {Video conference services have been there for quite a long time. First commercial services, enabled by ISDN, where mainly operated by Telcos, then IP enabled video conference and multiconference through the session description protocol (IETF RFC 4566). The common explanation why these services were not massively adopted was price, bandwidth limitation and poor usability. Today bandwidth has greatly improved thanks to ADSL penetration, and many free and commercial providers offer more usable video conference services. Still these services are not massively adopted by domestic users. We also base on the hypothesis that video conference integration with social networks and home networks, will dramatically improve usability and market, but we consider that both integration and usability will be greatly increased through flexible consumer electronics. In this article we explain the requirements of such a device, its architecture, and the advantages for users and technology adoption.},
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Video conference services have been there for quite a long time. First commercial services, enabled by ISDN, where mainly operated by Telcos, then IP enabled video conference and multiconference through the session description protocol (IETF RFC 4566). The common explanation why these services were not massively adopted was price, bandwidth limitation and poor usability. Today bandwidth has greatly improved thanks to ADSL penetration, and many free and commercial providers offer more usable video conference services. Still these services are not massively adopted by domestic users. We also base on the hypothesis that video conference integration with social networks and home networks, will dramatically improve usability and market, but we consider that both integration and usability will be greatly increased through flexible consumer electronics. In this article we explain the requirements of such a device, its architecture, and the advantages for users and technology adoption.
Sanvido, Fabio; Díaz-Sánchez, Daniel; Almenárez-Mendoza, Florina; Marín-López, Andrés
A Survey on Security in Future Internet and Cloud Proceedings Article
In: International Conference on Advances in Future Internet (UBICOMM 2011), 2011, ISBN: 978-1-61208-148-9.
@inproceedings{pa028,
title = {A Survey on Security in Future Internet and Cloud},
author = {Fabio Sanvido and Daniel Díaz-Sánchez and Florina Almenárez-Mendoza and Andrés Marín-López},
isbn = {978-1-61208-148-9},
year = {2011},
date = {2011-08-27},
urldate = {2011-08-27},
booktitle = {International Conference on Advances in Future Internet (UBICOMM 2011)},
abstract = {https://personales.upv.es/thinkmind/dl/conferences/afin/afin_2011/afin_2011_2_30_70129.pdf},
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https://personales.upv.es/thinkmind/dl/conferences/afin/afin_2011/afin_2011_2_30_70129.pdf
Proserpio, Davide; Díaz-Sánchez, Daniel; Almenárez, Florina; Marín, Andrés; Guerrero, Rosa Sánchez
Achieving IPTV Service Portability through Delegation Journal Article
In: IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, vol. 57, iss. 2, pp. 492 - 498, 2011, ISSN: 0098-3063.
@article{diazsanchez007,
title = {Achieving IPTV Service Portability through Delegation},
author = {Davide Proserpio and Daniel Díaz-Sánchez and Florina Almenárez and Andrés Marín and Rosa Sánchez Guerrero},
url = {https://ieeexplore.ieee.org/document/5955184
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doi = {https://doi.org/10.1109/TCE.2011.5955184},
issn = {0098-3063},
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date = {2011-05-03},
urldate = {2011-05-03},
journal = {IEEE TRANSACTIONS ON CONSUMER ELECTRONICS},
volume = {57},
issue = {2},
pages = {492 - 498},
abstract = {IPTV Set-top boxes rely on tamper proof hardware to cope with content protection but hampers enjoying an IPTV subscription in other devices. There are solutions that share the IPTV subscription using the home network but there is no approach to make the IPTV subscription portable. This article describes a solution to delegate IPTV rights to any STB using an inexpensive piece of hardware and the OAuth protocol.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
IPTV Set-top boxes rely on tamper proof hardware to cope with content protection but hampers enjoying an IPTV subscription in other devices. There are solutions that share the IPTV subscription using the home network but there is no approach to make the IPTV subscription portable. This article describes a solution to delegate IPTV rights to any STB using an inexpensive piece of hardware and the OAuth protocol.
Díaz-Sánchez, Daniel; Almenarez, Florina; Marín, Andrés; Proserpio, Davide; Cabarcos., Patricia Arias
Media Cloud: An Open Cloud Computing Middleware for Content Management Journal Article
In: IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, vol. 57, iss. 2, pp. 970 - 978, 2011, ISSN: 0098-3063.
@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 = {},
pubstate = {published},
tppubtype = {article}
}
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.