Current authentication methods on the Web have serious weaknesses. First, services heavily rely on the traditional password paradigm, which diminishes the end-users' security and usability. Second, the lack of attribute-based authentication does not allow anonymity-preserving access to services. Third, users have multiple online accounts that often reflect distinct identity aspects. This makes proving combinations of identity attributes hard on the users.In this paper, we address these weaknesses by proposing a privacy-preserving architecture for device-centric and attributebased authentication based on: 1) the seamless integration between usable/strong device-centric authentication methods and federated login solutions; 2) the separation of the concerns for Authorization, Authentication, Behavioral Authentication and Identification to facilitate incremental deployability, wide adoption and compliance with NIST assurance levels; and 3) a novel centralized component that allows end-users to perform identity profile and consent management, to prove combinations of fragmented identity aspects, and to perform account recovery in case of device loss. To the best of our knowledge, this is the first effort towards fusing the aforementioned techniques under an integrated architecture. This architecture effectively deems the password paradigm obsolete with minimal modification on the service provider's software stack.

The authentication and authorization process is a critical factor in Wi-Fi enterprise networks, being the mechanism used to give access to the network resources. The general Wi-Fi enterprise network security frameworks have a static structure, being based on user-name/password credentials and without offering a flexible granular access. Nowadays, smart-phones devices are becoming ubiquitous and these can be used as security elements due to their hardware/software capabilities. Smart-phones have the capability to execute complex cryptographic operations and have the hardware peripherals, which allow authenticating the user. In this paper, we propose a smart-phone centric authentication and authorization solution which employs a bootstrap security protocols to provision temporary credentials for a WPA2 Enterprise protected Wi-Fi network.

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