At present, network users have to remember a username and a corresponding password for every service with which they are registered. Single Sign-On (SSO) has been proposed as a solution to the usability, security and management implications of this situation. Under SSO, users authenticate themselves only once to an entity termed the ‘Authentication Service Provider’ (ASP) and subsequently use d...

Correctly integrating third-party services into web applications is challenging, and mistakes can have grave consequences when third-party services are used for security-critical tasks such as authentication and authorization. Developers often misunderstand integration requirements and make critical mistakes when integrating services such as single sign-on APIs. Since traditional programming te...

Most single sign-on (SSO) schemes do not handle well scenarios where users work simultaneously with more than one device because their agents do not cooperate. In these scenarios, most SSO systems are really per-machine single sign-on. Besides, most authentication services usually depend on centralized services, may be hard to administer, and do not work well for highly dynamic and partitionabl...

Public health researchers have identified numerous health implications associated with land use. However, it is unclear which of multiple methods of data collection most accurately capture land use, and “gold standard” methods vary by discipline. In this paper, five desirable features of ecological data sources are presented and discussed (cost, coverage, availability, construct validity, and a...

This article envisions the use of context-awareness to improve single sign-on solutions (SSO) for mobile users. The attribute-based SSO is expected to increase users’ perceived ease of use of the system and service providers’ authentication security of the application. From these two features we derive two value propositions for a new business model for mobile platforms. The business model can ...

Nowadays, computing environments are almost ubiquitous systems. Users own several machines and need to manage them in a non-obtrusive and transparent way. In addition, users eventually need to share their devices with other people. Traditional Single Sign-On (SSO) schemes do not handle well scenarios where users work simultaneously with more than one device because their agents do not cooperate...

In recent years, the Grid development focus is transitioning from resources to services. A Grid Service is defined as a Web Service that provides a set of well-defined interfaces and follows specific conventions. SAML is an XML based Single sign-on (SSO) standard for Web Services, which enables the exchange of authentication, authorization, and profile information between different entities. Th...