Garbled circuits, a classical idea rooted in the work of Yao, have long been understood as a
cryptographic technique, not a cryptographic goal. Here we cull out a primitive …

We advocate schemes based on fixed-key AES as the best route to highly efficient circuit-
garbling. We provide such schemes making only one AES call per garbled-gate evaluation …

We identify three types of attack on the intellectual property contained in software and three
corresponding technical defenses. A defense against reverse engineering is obfuscation, a …

Is there such a thing anymore as a software system that doesn't need to be secure? Almost
every softwarecontrolled system faces threats from potential adversaries, from Internet …

A key element of any mobile code based distributed system are the security mechanisms
available to protect (a) the host against potentially hostile actions of a code fragment under …

Following some ideas of the quantum secret sharing (QSS) protocol (2008, Phys. Lett. A
372, 1957), we propose an efficient quantum private comparison (QPC) protocol for …

The area of" computing with encrypted data" has been studied by numerous authors in the
past twenty years since it is fundamental to understanding properties of encryption and it has …

We describe a novel and efficient protocol for the following problem: A wants to buy some
good from B if the price is less than a. B would like to sell, but only for more than b, and …

Almost all of the most successful quantum algorithms discovered to date exploit the ability of
the Fourier transform to recover subgroup structures of functions, especially periodicity. The …

Mobile code technology has become a driving force for recent advances in distributed
systems. The concept of the mobility of executable code raises major security problems. In …