Share the Secret: Enabling Location Privacy in Ubiquitous Environments

Delakouridis, C.; Kazatzopoulos, L.; Marias, Giannis F.; Georgiadis, Panagiotis

doi:10.1007/11426646_27

Cited by 9 publications

(7 citation statements)

References 20 publications

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“…OP has an important role similar to a trusted authority of PKI. The similar model is introduced in [12] that multiple OPs only share the secret and U directly communicates with S P. Our protocol deploys two different types of location sensing technologies, while we do not define specific location sensing methods. We show the improved location authentication and privacy protocol in following section.…”

Section: Improved Location Authentication and Privacy Protocolmentioning

confidence: 99%

Enhancing Credibility of Location Based Service Using Multiple Sensing Technologies

Han

Kim

Shon

2011

IEICE Trans. Inf. & Syst.

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SUMMARYRecent Location Based Services (LBS) extend not only information services such as car navigation services, but supporting various applications such as augmented reality and emergency services in ubiquitous computing environments. However location based services in the ubiquitous computing environment bring several security issues such as location privacy and forgery. While the privacy of the location based service is considered as the important security issue, security against location forgery is less considered. In this paper, we propose improved Han et al. 's protocol [1] that provides more lightweight computation. Our proposed model also improves the credibility of LBS by deploying multiple location sensing technologies.

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Section: Improved Location Authentication and Privacy Protocolmentioning

confidence: 99%

Enhancing Credibility of Location Based Service Using Multiple Sensing Technologies

Han

Kim

Shon

2011

IEICE Trans. Inf. & Syst.

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“…Notably, Heinemann [28] proposes to implement privacy-respecting opportunistic networks based on changing pseudonyms, whereby he proclaims that identifiers must be changeable within every communication layer. A different use of pseudonyms is presented by Delakouridis et al [14], applying pseudonyms to the problem of storing and accessing location information in a privacy-preserving, decentralized manner. While our work shares the idea of using pseudonyms as reference points for data access, they propose to split the information to be protected according to Shamir secret sharing [47], and to distribute those shares on several servers, addressable via pseudonyms.…”

Section: Location Privacy Protectionmentioning

confidence: 99%

Multilaterally Secure Ubiquitous Auditing

Weber¹,

Mühlhäuser

2010

Intelligent Networking, Collaborative Systems and Applications

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Tracking information of individuals is a useful input to many Ubiquitous Computing (UbiComp) applications. Consider the example of a smart emergency management application: once mobile first responders are continuously tracked, a precise and safe coordination of rescue missions is possible, and also mission logs can be created for audit purposes. However, continuously tracking users and storing the data for later use is often in conflict with individual privacy preferences. This may ultimately lead to the non-acceptance and rejection of these new technologies by their users. In order to reconcile privacy and accountability requirements in location tracking systems, we introduce and evaluate the approach of using auditing mechanisms on two levels. We illustrate that, by employing carefully designed cryptographic mechanisms for selective pseudonym linkability based on efficient techniques of secure multiparty computation, it is possible to balance the conflicting interests to a certain extent. Our work, motivated by and applied to smart emergency management systems, is a step towards the realization of multilaterally secure and thus multilaterally acceptable UbiComp systems supporting collaborative work.

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“…For users of location-based service, these mixzones are service-free zones, in which the users' actual change of pseudonyms is done. Delakouridis et al [26] apply pseudonyms to the problem of storing and accessing location information in a privacy-preserving, decentralized manner, in their Share The Secret (STS) architecture. They propose to split the information to be protected according to Shamir secret sharing [11], and to distribute those shares on several servers, addressable via pseudonyms.…”

Section: Related Workmentioning

confidence: 99%

Harnessing Pseudonyms with Implicit Attributes for Privacy-Respecting Mission Log Analysis

Weber

2009

2009 International Conference on Intelligent Networking and Collaborative Systems

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Abstract-Many applications in the area of collaborative work can be enhanced by tracking users regularly. Consider a future emergency management application, in which mobile first responders are continuously tracked in order to support a better coordination of the rescue missions and to create a mission log. However, continuous tracking of individuals and storing the data for later use is often in conflict with individual privacy preferences. Therefore, it is a challenge to deal with conflicting traceability and privacy protection requirements. A common way to implement some kind of privacy protection is to use pseudonyms instead of fixed IDs for each user. However, in order to build a multilateral secure and acceptable solution, a more complex system design w.r.t. to pseudonym linkability is required, that also allows third parties to analyze the logs for organizational and legal reasons.In this paper, we present our approach to deal with this issue: we propose to encode additional information into pseudonyms that are used in location tracking systems and stored in data logs. Our concept comprises both access rights for the user herself and implicit attributes that may be verified by third parties in a privacy-respecting manner. We introduce the cryptographic constructions, which employ cryptographically secure pseudorandom number generators, threshold cryptography and techniques for securely evaluating encrypted data. Moreover, in this paper, we sketch a practical application example in the area of emergency mission log analysis and discuss the main security properties of our concepts.

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Share the Secret: Enabling Location Privacy in Ubiquitous Environments

Cited by 9 publications

References 20 publications

Enhancing Credibility of Location Based Service Using Multiple Sensing Technologies

Enhancing Credibility of Location Based Service Using Multiple Sensing Technologies

Multilaterally Secure Ubiquitous Auditing

Harnessing Pseudonyms with Implicit Attributes for Privacy-Respecting Mission Log Analysis

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