Privacy is preserved while retrieving an i-th record from the database of N records if no
information is revealed about i, not even to the database server. Repudiation is preserved in …

Digital identities and profiles are valuable assets: they are more and more relevant to allow
people to access services and information on the Internet. They need to be secured and …

Cryptographic processing is a critical component of secure networked computing systems.
The protection offered by cryptographic processing, however, greatly depends on the …

Trustworthy systems require that code be validated as genuine. Most systems implement this
requirement prior to execution by matching a cryptographic hash of the binary file against a …

An Object of this invention is to improve cryptography methods and systems. Another object
of the present invention is to provide a method and apparatus to create and manage …

(22) Filed: Sep. 15, 2000 1,, and then said co-server carries out N functions: Fl.(i0... In)
describes What the co-server returns to party P,. The (51) Int-Cl- preferred embodiment of …

This paper describes a complete 6-year project, starting from its theoretical basis up to the
hardware and software system implementation, and to the description of its future evolution …

Authentication based access control and integrity constraints are the major approaches
applied in commercial database systems to guarantee information and data integrity …

A “secure system” should be secure—but should also be a system that achieves some
particular functionality. A family of secure systems that our group has been investigating …

Delivery of licenses in a closed distribution system including a playback device and secure
processor. The secure processor allows only use of authorized content, and the playback …