Piotr Cofta

A Mechanism for Trust Sustainability Among Trusted Computing Platforms

Trust plays an important role in social life as well as in cyberspace. Trust establishment in cyberspace relies on human beings as well as digital components. Trusted computing platform (TCP) was proposed to improve the trust between users and their devices. However, current TCP lacks solutions for trust sustainability among TCPs, so that trust relationship might be broken after a period of time. In order to solve this problem, this paper presents a mechanism for sustaining trust among TCPs. The mechanism builds up the trust relationship based on the root trust module (RTM) at a trustee and ensures the trust sustainability according to pre-defined conditions approved at the time of trust establishment and enforced through the use of the pre-attested RTM until the intended purpose is fulfilled. The paper also presents the applicability of the trust sustainability mechanism in several application areas.

Methodology to bridge different domains of trust in mobile communications

Trust is playing an important role in communications and transactions. Based on different reasons of trust, different trusted domains, possibly disjoint, are formed in mobile communications, preventing complete systems from working properly. What is lacked therein is a bridge that can link domains, across trust gaps to establish a complete trusted mobile communication system. In this paper, the authors propose a generic method to analyze and model a mobile communication system into a number of trusted domains. In order to overcome the trust gaps among the originally disjoint domains, the authors further propose three approaches to bridge different domains and demonstrate the use of mobile Personal Trusted Devices, such as mobile handsets to act as the said bridge.

Towards the intimate trust advisor

In an increasingly automated and networked world humans are facing new problems stemming from the introduction of machine-intensive communication. The natural human ability to asses, accumulate and evaluate trust in other humans through direct interpersonal communications is significantly impaired when humans interact with systems alone. The development of applications that rely on trust, like electronic commerce, is significantly affected by this fact. This paper outlines a joint project that Nokia and Hewlett-Packard have just begun which analyses a) the ability of technology to replace the traditional notion of human-evaluated trust with a measure of trust that can be evaluated for the human by automated systems, and b) how this measurement can be communicated to the human by a personal appliance that we call an Intimate Trust Advisor (ITA).

Computing Recommendations to Trust

In a technology-intensive world humans are facing new problems stemming from the introduction of machine-intensive communication. The natural human ability to asses, accumulate and evaluate trust in other humans through direct interpersonal communications is significantly impaired when humans interact with systems alone. The development of applications that rely on trust, like electronic commerce, can be significantly affected by this fact unless humans can be better advised on trust.