As organizations increase their reliance on, possibly distributed, information systems for
daily business, they become more vulnerable to security breaches even as they gain …

Web-based applications greatly increase information availability and ease of access, which
is optimal for public information. The distribution and sharing of information via the Web that …

Publisher Summary This chapter proposes a framework for enforcing access control policies
on published XML documents using cryptography. In this framework, the owner publishes a …

Access control policies for XML typically use regular path expressions such as XPath for
specifying the objects for access-control policies. However such access-control policies are …

Abstract In the Database-As-a-Service (DAS) model, clients store their database contents at
servers belonging to potentially untrusted service providers. To maintain data confidentiality …

E-business integration is a vision we have developed over a long period of time. As we have
worked in business practice for many years prior to and in parallel with our academic …

Access control for XML documents is a non-trivial topic, as can be witnessed from the
number of approaches presented in the literature. Trying to compare these, we discovered …

Access control is one of the fundamental services that any Data Management System should
provide. Its main goal is to protect data from unauthorized read and write operations. This is …

In this paper we present an access control framework that provides flexible security
granularity for XML documents. RDF statements are used to represent security objects and …

Recent applications are seeing an increasing need that publishing XML documents should
meet precise security requirements. In this paper, we consider data-publishing applications …