Concept
Enigma machine
Related publications (30)
Experimental Investigation of Enhanced Grooves for Herringbone Grooved Journal Bearings
Jürg Alexander Schiffmann, Patrick Hubert Wagner, Philipp Kaspar Bättig
This paper presents the results of a theoretical and experimental investigation of the potential of enhanced groove geometries to increase the bearing clearance of a Herringbone Grooved Journal Bearing (HGJB) supported rotor. The theoretical study investig ...
2022Nonlinear study on a rigid rotor supported by herringbone grooved gas bearings: Theory and validation
Jürg Alexander Schiffmann, Patrick Hubert Wagner, Philipp Kaspar Bättig, Wanhui Liu
The nonlinear behavior of a rigid rotor supported by herringbone grooved journal gas bearings (HGJBs) was investigated in this study. The two-dimensional narrow groove theory (2D-NGT) was adopted to model the HGJBs. A set of integrated rotor-bearing state ...
2021Rotor Position Estimation with Hall-Effect Sensors in Bearingless Drives
Yves Perriard, Juan Patricio Tomás Peralta Fierro
The estimation of rotor position is fundamental for the commissioning of magnetically-levitated drives. The sensors required for this measurement must be close to the rotor, often requiring constructive measures that may limit the application potential of ...
IEEE2020Swap and Rotate: Lightweight Linear Layers for SPN-based Blockciphers
Serge Vaudenay, Francesco Regazzoni, Subhadeep Banik, Muhammed Fatih Balli
In CHES 2017, Jean et al. presented a paper on "Bit-Sliding" in which the authors proposed lightweight constructions for SPN based block ciphers like AES, PRESENT and SKINNY. The main idea behind these constructions was to reduce the length of the datapath ...
2020Integrated, Eddy-Current-Based Sensing of Rotor Position for Magnetic Levitation
Yves Perriard, Sean Thomas, Juan Patricio Tomás Peralta Fierro
Magnetically-levitated drives are compelling in applications where long-lifetime operation or process chamber encapsulation is a requirement. To exploit these advantages, contactless position sensors are needed for position information of the rotor. Off-th ...
IEEE2020Small-scale organic Rankine cycle turbo-generator for waste heat recovery on truck engine
Truck engine waste heat recovery (WHR) systems have been investigated for many years. Among them, organic Rankine cycle (ORC) systems show the highest potential, but still lack efficient small-scale expansion devices, in practice. Proposed expanders are of ...
EPFL2020Small scale very high speed slotless permanent magnet motors
This research work has been triggered by an industrial project aimed at modelling and manufacturing a small-scale very high speed motor. Very high speed electrical motors offer the main advantage of reducing the size of a system. Indeed, at constant output ...
EPFL2020MRI after successful eyeWatch(TM) implantation
Nikolaos Stergiopoulos, André Mermoud, Sylvain Roy, Adan Villamarin
The eyeWatch(TM) is a new glaucoma drainage device that includes an adjustable mechanism that can vary the resistance to aqueous humor outflow during the postoperative period to reduce the burden of postoperative intraocular pressure (IOP) management. The ...
SAGE PUBLICATIONS LTD2020Six Shades of AES
Subhadeep Banik, Muhammed Fatih Balli
Recently there have been various attempts to construct light weight implementations of the AES-128 encryption and combined encryption/ decryption circuits. However no known lightweight circuit exists forAES-192 and AES-256, the variants of AES that use lon ...
2019A Study of Persistent Fault Analysis
Andrea Felice Caforio, Subhadeep Banik
Persistent faults mark a new class of injections that perturb lookup tables within block ciphers with the overall goal of recovering the encryption key. Unlike earlier fault types persistent faults remain intact over many encryptions until the affected dev ...
Springer2019