Search for dissertations about: "Robert Forchheimer"

Showing result 1 - 5 of 10 swedish dissertations containing the words Robert Forchheimer.

2. 1. Authentication in Quantum Key Distribution : Security Proof and Universal Hash Functions

   Author : Aysajan Abidin; Jan-Åke Larsson; Viiveke Fåk; Robert Forchheimer; Joseph Merrill Renes; Linköpings universitet; []
   Keywords : ;

   Abstract : Quantum Key Distribution (QKD) is a secret key agreement technique that consists of two parts: quantum transmission and measurement on a quantum channel, and classical post-processing on a public communication channel. It enjoys provable unconditional security provided that the public communication channel is immutable. READ MORE

4. 2. Tree Structures in Broadcast Encryption

   Author : Kristin Anderson; Ingemar Ingemarsson; Jacob Löfvenberg; Robert Forchheimer; Ben Smeets; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Broadcast encryption; Subset Difference; tree structure; Information technology; Informationsteknologi;

   Abstract : The need for broadcast encryption arises when a sender wishes to securely distribute messages to varying subsets of receivers, using a broadcast channel, for instance in a pay-TV scenario. This is done by selecting subsets of users and giving all users in the same subset a common decryption key. READ MORE

5. 3. Computational Models for Animating 3D Virtual Faces

   Author : Marco Fratarcangeli; Robert Forchheimer; Marco Schaerf; Linköpings universitet; []
   Keywords : ;

   Abstract : Automatic synthesis of facial animation in Computer Graphics is a challenging task and although the problem is three decades old by now, there is still not a unified method to solve it. This is mainly due to the complex mathematical model required to reproduce the visual meanings of facial expressions coupled with the computational speed needed to run interactive applications. READ MORE

6. 4. Understanding Certificate Revocation

   Author : Åsa Hagström; Robert Forchheimer; Ingemar Ingemarsson; Håkan Kvarnström; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Revocation; Public-key certificates; Graph transformation; Information science; Informationslära;

   Abstract : Correct certificate revocation practices are essential to each public-key infrastructure. While there exist a number of protocols to achieve revocation in PKI systems, there has been very little work on the theory behind it: Which different types of revocation can be identified? What is the intended effect of a specific revocation type to the knowledge base of each entity?As a first step towards a methodology for the development of reliable models, we present a graph-based formalism for specification and reasoning about the distribution and revocation of public keys and certificates. READ MORE

7. 5. Mind Your Own Business : Understanding and characterizing value created by consumers in a digital economy

   Author : Martin Daniel Mileros; Nicolette Lakemond; Robert Forchheimer; Charlotte Norrman; Joakim Björkdahl; Linköpings universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; e-commerce; digital economy; Web 2.0; consumer-centric; personal data; content creators; user-generated content; business models; value creation; value capture; digital platforms; digital zero-price markets; blockchain technology; human-centered data economy;

   Abstract : In the context of what is commonly referred to as consumer-centric digital economy, personal data has become the new currency which is utilized by consumers to be granted access to seemingly “free apps” within so-called digital zero-price markets. Simultaneously, there are consumers, known as “content creators”, who can generate million-dollar revenues annually. READ MORE