We use a heterogeneous-agent model, in which labor income is risky and markets are incomplete, to analyze consumer debt portfolios of secured and unsecured debt in the US. Compared with previous research, we emphasize the role of durables which not only generate utility but also serve as debt collateral. This allows a meaningful joint analysis of secured and unsecured debt and introduces endoge...

Cryptographic theory has provided a potentially invaluable notion for cryptographic practice: the idea of provable security. Unfortunately, theoretical work often gains provable security only at the cost of effciency. Schemes like standard RSA are efficient but not provably secured. There are schemes who are provably secured but are not efficient. However, there are encryption schemes, for eg. ...

We study algorithms in the LOCAL model that produce secured output. Specifically, each vertex computes its part output, entire output is correct, but cannot discover of other vertices, with a certain probability. As extensive research distributed field yielded efficient decentralized algorithms, discussion about security was somewhat neglected. Nevertheless, many protocols and were devised area...

The security of wireless LANs has been a source of concern for businesses and individuals who are aware of its advantages due to its flexibility. With the increase in the use of wireless LANs for enterprises and homes, where information assets are shared continually, security is of the essence. With the increase in ecommerce and eservices, there is the risk of identity and credit card theft. Th...