Security of all RSA and Discrete Log Bits

We study the security of individual bits in an RSA encrypted message E_N(x). We show that given E_N(x), predicting any single bit in x with only a non-negligible advantage over the trivial guessing strategy, is (through a polynomial time reduction) as hard as breaking RSA. Moreover, we prove that blocks of O(log log N) bits of x are computationally indistinguishable from random bits. The results carry over to the Rabin encryption scheme. Considering the discrete exponentiation function, g^x modulo p, with probability 1-o(1) over random choices of the prime p, the analog results are demonstrated. Finally, we prove that the bits of ax+b modulo p give hard core predicates for any one-way function f

The hidden number problem in extension fields and its applications

13 page(s

Multiple Personal Security Domains

Mobility, usability and security are major requirements for any Ad Hoc network systems, and there have been numerous papers in regards to them. However, often these requirements are addressed separately. For a valid solution, these requirements must be considered from an integrated view. In this paper, taking into account mobility and usability, we implement a framework which allows to securely share resources and services between devices in Ad-hoc networks, based on security policies defined by the owners of those devices. In addition, we extend our framework to support inter-domain sharing of services and resources. We detail our design, present the preliminary results of our prototype, and discuss the lessons learned, in particular how user experience led to several re-designs of the initial security solution

Rapid inactivation of SARS-CoV-2 with LED irradiation of visible spectrum wavelengths

Difficulty in controlling SARS-CoV-2 transmission made the ability to inactivate viruses in aerosols and fomites to be an important and attractive risk reduction measure. Evidence that light frequencies have the ability to inhibit microorganisms has already been reported by many studies which, however, focused on ultraviolet (UV) wavelengths, which are known to induce potential injury in humans. In the present study, the effect on suspensions of SARS-CoV-2 of a Light Emitting Diode (LED) device capable of radiating frequencies in the non- hazardous visible light spectrum (VIS) was investigated. In order to evaluate the efficiency of viral inactivation, plaque assay and western blot of viral proteins were performed. The observed results showed a significant reduction in infectious particles that had been exposed to the LED irradiation of visible light. Furthermore, the analysis of the intracellular expression of viral proteins confirmed the inactivating effect of this irradiation technology. This in vitro study revealed for the first time the inactivation of SARS-CoV-2 through LED irradiation with multiple wavelengths of the visible spectrum. However additional and more in-depth studies can aim to demonstrate the data obtained during these experiments in different matrices, in mutable environmental conditions and on other respiratory viruses such as the influenza virus. The type of LED technology can decisively contribute on reducing virus transmission through the continuous sanitation of common environments without risks for humans and animals

5G-ENSURE - D3.2 5G-PPP security enablers open specifications (v1.0)

This document describes the open specifications of 5G Security enablers planned to compose the first software release (i.e. v1.0) of 5G-ENSURE Project due in September 2016 (M11). The enablers’ open specifications are presented per security areas in scope of the project, namely: Authentication, Authorization and Accounting (AAA), Privacy, Trust, Security Monitoring, and Network management & virtualisation isolation. For each of these categories the open specifications of all enablers planned in the project's Technical Roadmap for v1.0 and having features for v1.0 are detailed following the same template. Overall, this deliverable paves the way towards the development and demonstration of the first set of 5G-ENSURE security enablers as planned for v1.0 in the project's Technical Roadmap (i.e. D3.1). It is also a valuable input to both works on the 5G Security architecture and 5G Security testbed, since it provides the details regarding security enablers necessary in order to understand their mapping to 5G security architectural components, as well as their integration, testing, demonstration, and assessment on the 5G security testbe