Sökning: "attack"

Visar resultat 6 - 10 av 577 avhandlingar innehållade ordet attack.

1. 6. Stealthy Sensor Attacks on Feedback Systems : Attack Analysis and Detector-based Defense Mechanisms

   Författare :David Umsonst; Henrik Sandberg; Hideaki Ishii; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : In this thesis, we investigate sensor attacks on feedback systems and how anomaly detectors can be used as a defense mechanism. We consider an attacker with access to all sensor measurements and full knowledge about the closed-loop system model. LÄS MER

3. 7. On Some Symmetric Lightweight Cryptographic Designs

   Författare :Martin Ågren; Institutionen för elektro- och informationsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lightweight cryptography; integrity; authentication; symmetric cryptography; stream ciphers; block ciphers; Grain-128a; BEAN; KTANTAN; textsc{PRINTcipher}; FCSR combiner; related-key attack; linear cryptanalysis; linear correlations; invariant subspace attack.;

   Sammanfattning : This dissertation presents cryptanalysis of several symmetric lightweight primitives, both stream ciphers and block ciphers. Further, some aspects of authentication in combination with a keystream generator is investigated, and a new member of the Grain family of stream ciphers, Grain-128a, with built-in support for authentication is presented. LÄS MER

4. 8. Symptomatic Carotid Stenosis - optimal timing of surgical treatment

   Författare :Sofia Strömberg; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; carotid endarterectomy; carotid artery stenosis; stroke; transient ischemic attack; ocular transient ischemic attack;

   Sammanfattning : Abstract In patients with symptomatic carotid artery stenosis is convincing evidence that carotid endarterectomy (CEA) confers maximum benefit if performed within 14 days from index event. Patients with TIA or minor stroke have an increased risk of early recurrent stroke in the first weeks after the index event, then declining over months. LÄS MER

5. 9. Model based aircraft design : high angle of attack aerodynamics and weight estimation methods

   Författare :Christopher Jouannet; John Fielding; Linköpings universitet; []
   Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : This thesis addresses modelling of high angle of attack aerodynamic characteristics and weight estimation for highly maneuverable aircraft during conceptual design. In order to allow configuration selection with sufficient confidence, especially with unconventional configurations, high angle of attack aerodynamic prediction and weight estimations methods need to be improved. LÄS MER

7. 10. Securing the Memory Hierarchy from Speculative Side-Channel Attack

   Författare :Christos Sakalis; Magnus Själander; Sven Karlsson; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer Science; Datavetenskap;

   Sammanfattning : Modern high-performance CPUs depend on speculative out-of-order execution in order to offer high performance while also remaining energy efficient. However, with the introduction of Meltdown and Spectre in the beginning of 2018, speculative execution has been under attack. LÄS MER