Trusted third party

About: Trusted third party is a research topic. Over the lifetime, 2919 publications have been published within this topic receiving 60935 citations.

Distributed and Anonymous Publish-Subscribe

Abstract: Publish-subscribe is a scheme for distributing information based on interests. While security mechanisms have been added to publish-subscribe, privacy, in particular anonymous communication is hardly considered. We summarize security and privacy requirements for such systems, including an adversary model for privacy. We introduce a construction for publish-subscribe overlays that fulfills the requirements. Contrary to previous approaches, it does neither presume an online trusted third party, nor expensive cryptographic operations performed by brokers. Further, we informally discuss how our requirements are met.

Revocation of credentials in secret handshake protocols

Abstract: According to a general aspect, a computer-implemented method for a first user to verify an association with a second user through a secret handshake protocol includes maintaining information about a reusable identification handle for the first user, where the information about the reusable identification handle is provided by a trusted third party, maintaining information about a reusable credential for the first user, where the information about the reusable credential is provided by a trusted third party, and maintaining information about a matching reference for verifying an association with another user, where the information about the matching reference is provided by a trusted third party. Information based on the reusable identification handle and based on the reusable credential is transmitted to a potential peer. First information based on a reusable identification handle for the second user is received, and second information based on a reusable credential for the second user is received. A first comparison of a combination of the first information and the second information is performed with the matching reference to determine whether the second user's credentials match the first users matching reference. A second comparison of the first information with information published on a revocation list is performed to determine whether the second user's credentials have been revoked from usage. Based on the first comparison and the second comparison, a determination is made whether or not to verify the association of second user with the first user.

5G Visions of User Privacy

Abstract: Currently the discussions are going on the elements and definition of 5G networks. One of the elements in this discussion is how to provide for user controlled privacy for securing users' digital interaction. The purpose of this paper is to present elements of user controlled privacy needed for the future 5G networks. The paper concludes that an ecosystem consisting of a Trusted Third Party between the end user and the service providers as a distributed system could be integrated to secure the perspective of user controlled privacy for future services.

The Role of Blockchain Technology in Aviation Industry

Abstract: The current systems used to manage data in aviation industries are mostly centralized and fall short of ensuring trusted data provenance, immutability, transparency, auditablility, and traceability features. Blockchain is an emerging and disruptive technology that has a high potential to provide trusted traceability, transparency, auditability, and immutability for stored and exchanged data and transactions in a manner that is decentralized and secure without the involvement of trusted third party. In this article, we explore the potential role of blockchain technology in the aviation industry. We highlight and discuss the key opportunities brought about by blockchain technology in various aviation applications, including digitizing crew certificates, securing customer loyalty programs, and maintenance, repair, and overhaul operations. We present recently reported case studies that have leveraged blockchain technology to provide aviation-centric services. Furthermore, we introduce a framework that leverages blockchain-based smart contracts to automate the key services in the aviation industry. Finally, we highlight open research issues and challenges.

Trusted Certificates in Quantum Cryptography

Abstract: This paper analyzes the performance of Kak's three stage quantum cryptographic protocol based on public key cryptography against a man-in-the-middle attack. A method for protecting against such an attack is presented using certificates distributed by a trusted third party.