Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 16 of 16 for “"Fine-grained access control"”.
-
Fine grained access control of ODF documents using XACML
… contents of ODF documents using the XACML access control model. This study is significant to those conducting studying mechanisms of document security, members of the standardization community and information security providers of enterprises. The study conducted in this research may also …
-
Automated Trust Establishment in Open Systems
Without proper protection, an access control policy itself might reveal sensitive information unintentionally. To remedy this problem, we propose a unified scheme for resource protection in ATN. This scheme treats policies as first-class resources, which can themselves be protected by policies. …
-
Designing a SQL query rewriter to enforce database Row Level Security
… and implementation of Row Level Security, a fine-grained access control mechanism built on top of a database-agnostic data sharing platform called DataHub. Existing access control mechanisms for database systems are typically coarse-grained, in the sense that users are either given access to …
-
Access Control for Client-Server Object Databases
This thesis shows how to obtain efficient, fine-grained (object-level) control over user access to ODB data. We present a target access control model for ODB applications and delineate the trust assumptions required for providing such access control in client-server environments. The prototype …
-
Access control model and labelling scheme for efficient querying and updating XML data
… for XML security purposes, we propose a fine-grained access control model, named SecureX, which supports read and write privileges. With our novel access control concept, various access types are introduced, including those for determining if a user has the right to change XML structure. …
-
SPKI/SDSI HTTP Server / Certificate Chain Discovery in SPKI/SDSI
… distributed computing systems. It provides fine-grained access control, using a local name space hierarchy, and a simple, flexible, trust policy model; these features allow for the ability to create groups and delegate authorizations. Project Geronimo, named after the famous Native-American …
-
Efficient Ciphertext-policy Attribute Based Encryption for Cloud-Based Access Control
… data on an untrusted cloud environment, and the control over such data by their owners is lost after uploading to the cloud. Access control is the first defensive line that forbids unauthorized access to the stored data. Moreover, fine-grained access control on the untrusted cloud can be enforced …
-
PRIMA - Privilege Management and Authorization in Grid Computing Environments
… flexible authorization mechanisms to realize fine-grained access-control of resources. Computational grids are increasingly used for collaborative problem-solving and advanced science and engineering applications. Usage scenarios for advanced grids require support for small, dynamic working …
-
The SUDO Framework: For Data Organization And Efficient Query Authorization For NoSQL Databases
… to develop a framework that can enforce fine-grained access control policies and can be applicable to multiple NoSQL databases ranging over a variety of database models. In this thesis we present SUDO: Semi- / Unstructured Data Organization Framework for defining pseudo-dynamic schemata. …
-
Security of Publish/Subscribe Systems
… for publish/subscribe systems is enforcing fine-grained access control policies on the content of publications. Access control policies are usually enforced by a trusted third party or by the owner holding the data. However, such solutions are not possible for pub/sub systems. When brokers …
-
Operating system support for warehouse-scale computing
… infrastructure software lacks end-to-end access control mechanisms, and work placement ignores the effects of hardware heterogeneity and workload interference. In this dissertation, I argue that uniform, clean-slate operating system (OS) abstractions designed to support distributed systems …
-
A Policy-Based Management Approach to Security in Cloud Systems
… are serving an increasing number of users accessing digital resources from various locations. In these circumstances, enabling efficient and reliable access control is becoming an inherently challenging task. A representative example here is a hybrid cloud environment, where various parts …
-
Privacy Preservation for Cloud-Based Data Sharing and Data Analytics
… recognized human right for individuals to control the access to their personal information, and bar the negative consequences from the use of this information. As communication technologies progress, the means to protect data privacy must also evolve to address new challenges come into …
-
Analyzing & designing the security of shared resources on smartphone operating systems
… leverage to manage personal information and access external data and other connected devices on a daily basis. To support such multi-faceted functionality, smartphones are designed with a multi-process architecture, which enables third-party developers to build smartphone applications which …
-
Privacy-Aware Risk-Based Access Control Systems
… companies (e.g., reputation loss, noncompliance fines, legal actions). Privacy violation threats are not exclusively caused by external actors gaining access due to security gaps. Privacy breaches can also be originated by internal actors, sometimes even by trusted and authorized ones. As a …