Detection of Mobile Apps in Network Traffic Using JA3 Fingerprinting

V posledných rokoch sa stala mobilná komunikácia oveľa bezpečnejšia. Dôvodom je zapúzdrenie internetových dát protokolom TLS, ktorý šifruje prenášané dáta. Bezpečnosť používateľa sa zvýšila, ale na druhej strane táto skutočnosť limituje možnosti monitorovania, keďže obsah komunikácie sa stáva pre monitorovacie systémy neznámy. Táto bakalárska práca skúma možnosti monitorovania mobilných aplikácií v sieťovej komunikácii na základe otlačkov JA3 a JA3S. Práca si dáva za cieľ implementovať nástroje na automatizované vytvorenie databázy otlačkov a následnú detekciu.In recent years, mobile network communication became more secure. The reason is encapsulation with TLS protocol, that encrypts transmitted data. User security was increased, but on the other hand it limits network monitoring possibilities, because the data are encrypted. This thesis researches possibilities of monitoring mobile applications in network traffic using JA3 and JA3S fingerprints. The aim is to implement tools for automated creation of fingerprints database and consecutive detection.

Kinematic analysis of Stirling engine

The submitted paper presents a kinematic analysis of Stirling engine by the vector method. Position equations are written for various points of the mechanism, and values of velocity and acceleration are obtained from derivation of the equations, depending on time. Equations in matrix form are solved by means of the Matlab program. Graphic dependences of kinematic magnitudes of some points are given in dependence on the angle of rotation of the drive member. Position equations are utilised for the animation of the mechanism. The computational model of the Stirling engine was created in the SolidWorks software program

Computational Modeling of Microstructure and Numerical Analysis of Stress-Strain States of Cast Iron with Vermicular Graphite Shape

AbstractNowadays the modern computational methods depend on the creation of a virtual model and subsequent simulation. The report deals with the analysis of stress conditions on microstructure of cast iron with vermicular graphite type. It discusses the chemical composition, mechanical properties and structure that we will serve as input parameters for computational modelling and numerical analysis. The computational model structure was created two-dimensional by linear triangular elements. The size of elements was determined based on sensitivity analysis. According to the real structure of cast iron with vermicular graphite shape will be created model, from which will be performed numerical analysis of voltage-strain states in finite element software system ADINA 8.8.0. For the purpose of calculation and subsequent statistical evaluation of the results in the future will be necessary to generate much more of geometric models