Search for dissertations about: "Helger Lipmaa"

Found 2 swedish dissertations containing the words Helger Lipmaa.

  2. 1. Some aspects of cryptographic protocols : with applications in electronic voting and digital watermarking

    Author : Björn Terelius; Douglas Wikström; Helger Lipmaa; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Cryptographic protocols are widely used on the internet, from relatively simple tasks such as key-agreement and authentication to much more complex problems like digital cash and electronic voting. Electronic voting in particular is a problem we investigate in this thesis. READ MORE

  4. 2. Electronic Cash and Hierarchical Group Signatures

    Author : Mårten Trolin; Johan Håstad; Helger Lipmaa; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Computer science; Datavetenskap;

    Abstract : I denna avhandling presenteras resultat inom två områden – elektroniska betalningar och hierarkiska gruppsignaturer. • En starkare säkerhetsdefinition för digitala pengar presenteras med syfte att användare inte ska behöva lita på banken i samma utsträckning som för äldre definitioner. READ MORE