Mobile Ad hoc Network (MANET) is a wireless technology for mobile nodes. This network is setup on fly without any infrastructure. The mobility nature of this network and the lack of infrastructure make it very challenging to be secured. In this paper, we introduce a formal model for Identity-based RSA (Id-RSA) scheme proven secure in the random oracle model. The proposed scheme relies on establ...

Firstly, we demonstrate a pathological hash function choice that makes RSA-OAEP insecure. This shows that at least some security property is necessary for the hash functions used in RSAOAEP. Nevertheless, we conjecture that only some very minimal security properties of the hash functions are actually necessary for the security of RSA-OAEP. Secondly, we consider certain types of reductions that ...

BACKGROUND Recurrent spontaneous abortion (RSA) is one of the most common health complications with a strong genetic component. Several genetic disorders were identified as etiological factors of hereditary X linked RSA. However, more genetic factors remain to be identified. OBJECTIVE In this study we performed linkage analysis on a large X linked RSA pedigree to find a novel susceptibility l...

Contents 1 General introduction 9 2 RSA in practical steps 19 3 RSA of the Mallory-Head femoral stem without attached markers 33 4 Roentgen stereophotogrammetric analysis of metal-backed hemispherical cups without attached markers 49 5 Fast and accurate automated measurements in digitised stereophotogrammetric radiographs 59 6 Digital automated RSA compared to manually operated RSA 75 7 Model-b...

OBJECTIVE The goal of this study was to examine respiratory sinus arrhythmia (RSA), an indicator of parasympathetic nervous system-linked cardiac activity, and skin conductance level (SCL), a sympathetic indicator, as moderators of the link between child maltreatment and adolescent aggression. METHOD Participants were 234 maltreated (48.3% male) and 128 (57.8% male) comparison youth aged 9-16...

Respiratory sinus arrhythmia (RSA) is an index of the vagal control of heart rate that is associated with emotion regulatory capacity. To examine RSA in depressed and nondepressed participants in the context of an emotion-regulatory challenge, we presented a sad film to induce crying, a behavior associated with heightened parasympathetic activation. We predicted that nondepressed persons who cr...

Childhood adversity (CA) is strongly associated with youth psychopathology. Identifying factors that reduce vulnerability following CA is critical for developing preventive interventions. Vagal tone and vagal reactivity following psychosocial stressors might influence psychopathology among youths exposed to CA. We acquired heart period and impedance cardiography data to calculate respiratory si...

The somatic marker hypothesis posits that autonomic activity occurring in response to specific stimuli aids in implicit learning, the learning of information without explicit awareness of what has been learned. This study investigated whether respiratory sinus arrhythmia (RSA), a measure of autonomic nervous system activity, predicted changes in implicit learning. The interaction of resting RSA...

The difficulty of integer factorization is fundamental to modern cryptographic security using RSA encryption and signatures. Although a 512-bit RSA modulus was first factored in 1999, 512-bit RSA remains surprisingly common in practice across many cryptographic protocols. Popular understanding of the difficulty of 512-bit factorization does not seem to have kept pace with developments in comput...

This paper explores the history and mathematics be­ hind the RSA cryptosystem, including the idea of public key cryp­ tosystems and number theory. It outlines the applications of RSA including secure information transfers and electronic signatures. It also analyzes why RSA is a secure way of transmitting information and the ways that it has been defeated in the past. In particular, we focus on ...