Privacy and Identity Management in a Layered Pervasive Service Platform

Making pervasive computing reality is a challenging task mainly due to the multitude of functional requirements and technological constraints. In parallel to the honourable research progress in specific technologies, the Daidalos project assessed that in future there will be the need for a pervasive service platform with open interfaces in order to simplify service development and provisioning. The success of such a platform depends on the balance of different aspects, e.g. operational costs with revenue potentials, collection of personal data for context-awareness with privacy protection, manual control and transparency with enhanced user experience and simplicity. In this paper we show the Daidalos approach to privacy protection and identity management for a future pervasive service platform and its architecture. We show how user identities are structured to support dynamic context information while following regulations for privacy protection in Europe. Special focus is put on the trade-off between access control for privacy protection and user experience. This is achieved by automated identity selection, automatic derivation of fine-grained access control policies and their deployment. We also present gathered performance data and implementation details of our ID Broker concept

Lifelong privacy – privacy and identity management for life.

Abstract. The design of identity management preserving an individual's privacy must not stop at supporting the user in managing her/his present identities. Instead, since any kind of privacy intrusion may have implications on the individual's future life, it is necessary that we identify and understand the issues related to longterm aspects of privacyenhancing identity management. Only that way, according solutions can be developed, which enable users to control the disclosure of their personal data throughout their whole lives, comprising past, present, and future. This paper will give a general overview about concepts supporting privacyenhancing identity management. Further, it introduces the reader to the problem field of privacy management by means of privacy-enhancing identity management during various stages of life as well as in various areas of life. Statements about required mechanisms will be given as well as directions regarding the three most important aspects to consider when managing one's identities: communication infrastructure as well as selection of communication partners and tools

Towards privacy-aware identity management

The overall goal of the PRIME project (Privacy and Identity Management for Europe) is the development of a privacy-enhanced identity management system that allows users to control the release of their personal information. The PRIME architecture includes an Access Control component allowing the enforcement of protection requirements on personal identifiable information (PII). The overall goal of the PRIME project (Privacy and Identity Management for Europe) is the development of a privacy-enhanced identity management system that allows users to control the release of their personal information. The PRIME architecture includes an Access Control component allowing the enforcement of protection requirements on personal identifiable information (PII)

Keys in the Clouds: Auditable Multi-device Access to Cryptographic Credentials

Personal cryptographic keys are the foundation of many secure services, but storing these keys securely is a challenge, especially if they are used from multiple devices. Storing keys in a centralized location, like an Internet-accessible server, raises serious security concerns (e.g. server compromise). Hardware-based Trusted Execution Environments (TEEs) are a well-known solution for protecting sensitive data in untrusted environments, and are now becoming available on commodity server platforms. Although the idea of protecting keys using a server-side TEE is straight-forward, in this paper we validate this approach and show that it enables new desirable functionality. We describe the design, implementation, and evaluation of a TEE-based Cloud Key Store (CKS), an online service for securely generating, storing, and using personal cryptographic keys. Using remote attestation, users receive strong assurance about the behaviour of the CKS, and can authenticate themselves using passwords while avoiding typical risks of password-based authentication like password theft or phishing. In addition, this design allows users to i) define policy-based access controls for keys; ii) delegate keys to other CKS users for a specified time and/or a limited number of uses; and iii) audit all key usages via a secure audit log. We have implemented a proof of concept CKS using Intel SGX and integrated this into GnuPG on Linux and OpenKeychain on Android. Our CKS implementation performs approximately 6,000 signature operations per second on a single desktop PC. The latency is in the same order of magnitude as using locally-stored keys, and 20x faster than smart cards.Comment: Extended version of a paper to appear in the 3rd Workshop on Security, Privacy, and Identity Management in the Cloud (SECPID) 201

Technology, privacy and identity: a Hong Kong perspective

This article explores the concepts of privacy and identity in Hong Kong in relation to the law relating to data protection. It first considers the notions of privacy and identity in the light of Hong Kong's socioeconomic situation and recent postcolonial heritage. It then highlights the importance of identity management and considers the distinctions and overlaps between identity management and privacy protection. With this conceptual framework in mind, the article then considers the various laws in Hong Kong pertaining to data protection, with a focus on the aspects relating to identity management. It observes that while there is some legal protection in respect of the data relating to an individual's identity, there are other priorities which may take precedence in determining the extent of identity management under the legal system in Hong Kong. Finally, recommendations are made as to how to improve identity management within the context of data protection in Hong Kong

Privacy self-regulation and the changing role of the state: from public law to social and technical mechanisms of governance

This paper provides a structured overview of different self-governance mechanisms for privacy and data protection in the corporate world, with a special focus on Internet privacy. It also looks at the role of the state, and how it has related to privacy self-governance over time. While early data protection started out as law-based regulation by nation-states, transnational self-governance mechanisms have become more important due to the rise of global telecommunications and the Internet. Reach, scope, precision and enforcement of these industry codes of conduct vary a lot. The more binding they are, the more limited is their reach, though they - like the state-based instruments for privacy protection - are becoming more harmonised and global in reach nowadays. These social codes of conduct are developed by the private sector with limited participation of official data protection commissioners, public interest groups, or international organisations. Software tools - technical codes - for online privacy protection can give back some control over their data to individual users and customers, but only have limited reach and applications. The privacy-enhancing design of network infrastructures and database architectures is still mainly developed autonomously by the computer and software industry. Here, we can recently find a stronger, but new role of the state. Instead of regulating data processors directly, governments and oversight agencies now focus more on the intermediaries - standards developers, large software companies, or industry associations. And instead of prescribing and penalising, they now rely more on incentive-structures like certifications or public funding for social and technical self-governance instruments of privacy protection. The use of technology as an instrument and object of regulation is thereby becoming more popular, but the success of this approach still depends on the social codes and the underlying norms which technology is supposed to embed. --