Many networked applications could beneet from executing components of their functionality closer to the data or services with which they interact. By doing this they may be able to circumvent long communication latencies or avoid transferring large quantities of data over congested or expensive network links. However, no public infrastructure currently exists to enable users to do this; they ar...

In cloud storage services, a wide range of sensitive information may be leaked to the host server via the exposure of access pattern albeit data is encrypted. Many security-provable schemes have been proposed to preserve the access pattern privacy; however, they may be vulnerable to attacks towards data integrity or availability from malicious users. This is due to the fact that, preserving acc...

The largest insurer in Massachusetts, Blue Cross Blue Shield, began a new program in 2009 that combines global payments—fixed payments for the care of patient populations during a specified time period—with large potential quality bonuses for medical groups. In interviews with representatives of the participating medical groups, many of which could be considered prototype accountable care organ...

We introduce cryptographic protocols for securely and efficiently computing the cardinality of set union intersection. Our private set-cardinality (PSC) are designed setting in which a large parties distributed system makes observations, small with more resources higher reliability aggregates observations. PSC allows secure useful statistics gathering privacy-preserving systems. For example, it...