Today, identity management systems are widely used in different types of organizations, from academic and government institutions to large enterprises. An important feature of identity management systems is the Single Sign-On functionality. Single Sign-On allows users to authenticate once, and freely use all services and resources available to them afterwards. In this paper, we present the usage of Kerberos in identity management systems. An overview of Kerberos protocol, state of the art of identity management systems and different generic architectures for identity management is given in the paper. Also, we present a Single Sign-On identity management architecture proposal based on Kerberos protocol, and discuss its properties. Special attention was given to authentication, authorization and auditing.

Today, Internet of Things (IoT) is becoming part of a diverse organization, from academic to large enterprises. Also, we use IoT in our daily lives like home appliances, security monitoring such as baby, smoke detectors, health product measure exercise, traffi c systems, industrial uses, etc. Biometric is an important segment of IoT, because it proves user's identity. Biometric security plays the main role in IoT. This paper presents how biometric system secures the Internet of Things and architecture proposal based on one system that connects biometric system and components of Internet of Things.