Search for dissertations about: "covert timing channels"

Showing result 1 - 5 of 8 swedish dissertations containing the words covert timing channels.

  2. 1. Language Support for Controlling Timing-Based Covert Channels

    Author : Alejandro Russo; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; information-flow; language-based security; semaphores; non-interference; Haskell; library; concurrency; internal timing covert channel;

    Abstract : The problem of controlling information flow in multithreaded programs remains an important open challenge.A major difficulty for tracking information flow in concurrent programs is due to the internal timing covert channel. READ MORE

  4. 2. Securing concurrent programs with dynamic information-flow control

    Author : Pablo Buiras; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; dynamic; lazy evaluation; LIO; Haskell; information-flow control; cache; covert channels; covert timing channels; concurrency;

    Abstract : The work presented in this thesis focusses on dealing with timingcovert channels in dynamic information-flow control systems,particularly for the LIO library in Haskell.Timing channels are dangerous in the presence ofconcurrency. READ MORE

  5. 3. Controlling Timing Channels in Multithreaded Programs

    Author : Alejandro Russo; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The problem of controlling information flow in multithreaded programs remains an important open challenge. A major difficulty fortracking information flow in concurrent programs is due to the internal timing covert channel. READ MORE

  6. 4. Securing functional programs with floating-label information-flow control

    Author : Pablo Buiras; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; covert timing channels; LIO; concurrency; type-level programming; floating-label; Haskell; internal timing; dynamic enforcement; DC labels; dynamic policies; lazy evaluation; information-flow control; cache-based attacks; language-based security; hybrid enforcement; flow-sensitivity; functional programming; privileges;

    Abstract : The work presented in this thesis focuses on information-flow control systems for functional programs, particularly on the LIO library in Haskell. The thesis considers threemain aspects in this area: timing covert channels, dynamic policies andenforcement mechanisms that improve precision of the analysis. READ MORE

  7. 5. Type Based Techniques for Covert Channel Elimination and Register Allocation

    Author : Johan Agat; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; type and effect systems; program analysis; functional languages; confidentiality; register allocation; privacy; computer security; covert timing channels; program transformation; information flow; type systems;

    Abstract : As the title suggests, this thesis consists of two parts that address two rather different topics. The first part investigates secure information flow in sequential programs, with the aim of completely eliminating covert timing channels. The second part presents a technique to describe register allocation for a functional language. READ MORE