Authentication and authorization are two of the most important services for any IT
infrastructure. Taking into account the current state of affairs of cyber warfare, the security …

We propose a resilience architecture for improving the security and dependability of
authentication and authorization infrastructures, in particular the ones based on RADIUS …

We introduce a set of tools and techniques for increasing the resilience and trustworthiness
of identity providers (IdPs) based on OpenID. To this purpose we propose an architecture of …

In the Cloud era, data is generated everywhere, how to efficiently analyze those" Big Data"
that have properties such as large volume, fast generation, and variety, are most critical …

In our previous work we designed and evaluated the feasibility of highly secure and
dependable identity providers (IdPs) for the increasing requirements of future IT …

Ensuring identity management (IdM) systems availability plays a key role to support
networked systems. Denial-of-Service (DoS) attacks can make IdM operations unavailable …

In this paper, we propose a P2P digital library that takes advantage of P2P networks and
digital libraries. The key problem with P2P network searches is the low recall value, time to …

Identity management (IdM) systems employ Identity Providers (IdPs), as guardians of users'
critical information. However, Distributed Denial-of-Service (DDoS) attacks can make IdPs …

Este artigo apresenta o desenvolvimento de uma arquitetura para provedores OpenID
resilientes e seguros, cujo objetivo é garantir propriedades essenciais como integridade …

Secure authentication services and systems typically are based on two main approaches:
the first one seeks to defend itself of all kind of attack. Actually, the major current services …